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Liu S, Ma J, Liu H, Liu W, Zeng Y, Liu R. Low temperature carbonization and synergistic flame retardancy of cotton fabric coated by phosphorus‑nitrogen flame retardants. Int J Biol Macromol 2024; 278:134873. [PMID: 39163958 DOI: 10.1016/j.ijbiomac.2024.134873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/01/2024] [Accepted: 08/17/2024] [Indexed: 08/22/2024]
Abstract
To solve the problems of flammability and smoldering of cotton fabric, its flame-retardant finishing was executed with biomass wool keratin (WK) and cyclic phosphate ester (CPE) through the soaking and baking process. The synergistic mechanism of WK low-temperature melting and CPE catalytic dehydration prompted the formation of protective carbonization layer on cotton fabric surface, and this protective layer reduced its pyrolysis rate, inhibited the production of combustible materials and improved its flame retardancy. The results of synchronous thermal analysis indicate that the initial decomposition temperature of WK and CPE is lower than that of cotton fabric, and they precede the endothermic degradation before fabric main body. This effectively promotes the low-temperature carbonization of cotton fabric and inhibits its pyrolysis. The initial decomposition temperature of WK/CPE treated fabrics advances by 47.9 °C-97.8 °C, presenting significant low-temperature carbonization trend. Moreover, they form 3.0 %-20.0 % aromatic structural char before the pyrolysis of cotton cellulose due to the low-temperature dehydration and carbonization reactions. The damage length after vertical burning is only 4.0 cm for treated fabric with five layers, its after-flame and smoldering disappear, and its limiting oxygen index value increases to 28.7 %. This research provides an effective idea for the flammability and smoldering problems of cotton fabric.
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Affiliation(s)
- Shuping Liu
- Zhongyuan University of Technology, Zhengzhou, Henan 451191, China; Collaborative Innovation Center of Advanced Textile Equipment Jointly Constructed by Henan Province and Ministry of Education, Zhengzhou, Henan 451191, China; Zhengzhou Key Laboratory of Flame Retardant, Heat Insulating and Fire Resistant Functional Clothing and Materials, Zhengzhou, Henan 451191, China
| | - Jingjing Ma
- Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
| | - Hua Liu
- Jinan Polytechnic of Engineering, Jinan, Shandong 250200, China
| | - Wei Liu
- Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
| | - Yuan Zeng
- Zhongyuan University of Technology, Zhengzhou, Henan 451191, China
| | - Rangtong Liu
- Zhongyuan University of Technology, Zhengzhou, Henan 451191, China; Collaborative Innovation Center of Advanced Textile Equipment Jointly Constructed by Henan Province and Ministry of Education, Zhengzhou, Henan 451191, China; Zhengzhou Key Laboratory of Flame Retardant, Heat Insulating and Fire Resistant Functional Clothing and Materials, Zhengzhou, Henan 451191, China.
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Sun F, Wang L, Gao T, Zhong Y, Ren K. Enhanced Fire Safety of Energy-Saving Foam by Self-Cleavage CO 2 Pre-Combustion and Phosphorus Release Post-Combustion. Molecules 2024; 29:3708. [PMID: 39125111 PMCID: PMC11314537 DOI: 10.3390/molecules29153708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 07/24/2024] [Accepted: 08/03/2024] [Indexed: 08/12/2024] Open
Abstract
Rigid polyurethane foam (RPUF) is widely utilized in construction and rail transportation due to its lightweight properties and low thermal conductivity, contributing to energy conservation and emission reduction. However, the inherent flammability of RPUF presents significant challenges. Delaying the time to ignition and preventing flame spread post-combustion is crucial for ensuring sufficient evacuation time in the event of a fire. Based on this principle, this study explores the efficacy of using potassium salts as a catalyst to promote the self-cleavage of RPUF, generating substantial amounts of CO2, thereby reducing the local oxygen concentration and delaying ignition. Additionally, the inclusion of a reactive flame retardant (DFD) facilitates the release of phosphorus-oxygen free radicals during combustion, disrupting the combustion chain reaction and thus mitigating flame propagation. Moreover, potassium salt-induced catalytic carbonization and phosphorus derivative cross-linking enhance the condensed phase flame retardancy. Consequently, the combined application of potassium salts and DFD increases the limiting oxygen index (LOI) and reduces both peak heat release rate (PHRR) and total heat release (THR). Importantly, the incorporation of these additives does not compromise the compressive strength or thermal insulation performance of RPUF. This integrated approach offers a new and effective strategy for the development of flame retardant RPUF.
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Affiliation(s)
- Fengyun Sun
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China;
| | - Lijun Wang
- Clinical College, Chengdu University, Chengdu 610106, China; (L.W.); (T.G.)
| | - Tiantian Gao
- Clinical College, Chengdu University, Chengdu 610106, China; (L.W.); (T.G.)
| | - Yuanyuan Zhong
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China;
| | - Kefa Ren
- College of Earth and Planetary Sciences, Chengdu University of Technology, Chengdu 610051, China
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3
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Song X, Li Q, Han Z, Hou B, Pan YT, Geng Z, Zhang J, Haurie Ibarra L, Yang R. Synchronous modification of ZIF-67 with cyclomatrix polyphosphazene coating for efficient flame retardancy and mechanical reinforcement of epoxy resin. J Colloid Interface Sci 2024; 667:223-236. [PMID: 38636224 DOI: 10.1016/j.jcis.2024.04.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/10/2024] [Accepted: 04/13/2024] [Indexed: 04/20/2024]
Abstract
Cyclomatrix polyphosphazenes have attracted widespread attention in the field of polymer flame retardancy. Nevertheless, the optimal manifestation of their distinctive structural attributes and flame-retardant properties necessitates a judicious selection of condensation monomers and synergistic templates during the fabrication of polyphosphazene flame retardants. In our previous studies, it was discovered that when ZIF-67 is functionalized with polyphosphazene, the by-product HCl from phosphazene polycondensation causes etching on ZIF-67. Based on this "synchronous etching" effect, a series of hybrid materials comprising cyclomatrix polyphosphazene and ZIF-67, denoted as ZIF-67@PDS (PDS, poly-(cyclotriphosphazene-co-4,4'-diaminodiphenyl sulfone)), ZIF-67@PBS (PBS, poly-(cyclotriphosphazene-co-Bisphenol A)), and ZIF-67@PZS (PZS, poly-(cyclotriphosphazene-co-4,4'-sulfonyldiphenol)), was synthesized utilizing DDS (4,4'-diaminodiphenyl sulfone), BPA (Bisphenol A), and BPS (4,4'-sulfonyldiphenol) monomers as precursors, respectively. Upon the incorporation of 2.0 wt.% of ZIF-67@PDS, ZIF-67@PBS, and ZIF-67@PZS, the flame retardant and mechanical characteristics of EP composites exhibited marked enhancement. The unique structural characteristics of hybrid and the synergistic effects of Co-P-N contribute to the improvement of comprehensive properties. Compared with pure EP, EP/ZIF-67@PZS has the best enhancement effect, and its pHRR, THR, and TSP decreased by 34.0%, 30.0%, and 40.5%, respectively. In terms of mechanical strength, ZIF-67@PZS also increases the flexural strength of EP by 37.42%. Relying on the "synchronous etching" effect, this study explores and verifies the effective combination of ZIF-67 and different types of polyphosphazenes, and obtains a series of ZIF-67-derived cyclomatrix polyphosphazene hybrids with different morphologies and properties in one step. It provides a new idea and strategy for the simultaneous modification of polyphosphazene materials and the preparation of multifunctional flame retardants in the future.
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Affiliation(s)
- Xiaoning Song
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Qianlong Li
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Zhengde Han
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Boyou Hou
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China; Centre for Future Materials, University of Southern Queensland, Springfield 4300, Australia; School of Agriculture and Environmental Science, University of Southern Queensland, Springfield 4300, Australia
| | - Ye-Tang Pan
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
| | - Zhishuai Geng
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
| | - Jing Zhang
- Materials Design and Engineering Department, Beijing Institute of Fashion Technology, Beijing 100029, PR China.
| | - Laia Haurie Ibarra
- School of Building Construction (EPSEB), Universitat Politècnica de Catalunya, Av. Doctor Marañon 44, 08028 Barcelona, Spain
| | - Rongjie Yang
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, PR China
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4
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Fang DX, Chen MJ, Zeng FR, Guo SQ, He L, Liu BW, Huang SC, Zhao HB, Wang YZ. Self-evolutionary recycling of flame-retardant polyurethane foam enabled by controllable catalytic cleavage. MATERIALS HORIZONS 2024; 11:3585-3594. [PMID: 38742392 DOI: 10.1039/d4mh00039k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Polyurethane (PU) foams, pivotal in modern life, face challenges suh as fire hazards and environmental waste burdens. The current reliance of PU on potentially ecotoxic halogen-/phosphorus-based flame retardants impedes large-scale material recycling. Here, our demonstrated controllable catalytic cracking strategy, using cesium salts, enables self-evolving recycling of flame-retardant PU. The incorporation of cesium citrates facilitates efficient urethane bond cleavage at low temperatures (160 °C), promoting effective recycling, while encouraging pyrolytic rearrangement of isocyanates into char at high temperatures (300 °C) for enhanced PU fire safety. Even in the absence of halogen/phosphorus components, this foam exhibits a substantial increase in ignition time (+258.8%) and a significant reduction in total smoke release (-79%). This flame-retardant foam can be easily recycled into high-quality polyol under mild conditions, 60 °C lower than that for the pure foam. Notably, the trace amounts of cesium gathered in recycled polyols stimulate the regenerated PU to undergo self-evolution, improving both flame-retardancy and mechanical properties. Our controllable catalytic cracking strategy paves the way for the self-evolutionary recycling of high-performance firefighting materials.
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Affiliation(s)
- Dan-Xuan Fang
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Ming-Jun Chen
- School of Science, Xihua University, Chengdu, 610039, China
| | - Fu-Rong Zeng
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Shuai-Qi Guo
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Lei He
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Bo-Wen Liu
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | | | - Hai-Bo Zhao
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Yu-Zhong Wang
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
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5
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Wang R, Fu T, Yang YJ, Song X, Wang XL, Wang YZ. Scientific Discovery Framework Accelerating Advanced Polymeric Materials Design. RESEARCH (WASHINGTON, D.C.) 2024; 7:0406. [PMID: 38979514 PMCID: PMC11228074 DOI: 10.34133/research.0406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 05/22/2024] [Indexed: 07/10/2024]
Abstract
Organic polymer materials, as the most abundantly produced materials, possess a flammable nature, making them potential hazards to human casualties and property losses. Target polymer design is still hindered due to the lack of a scientific foundation. Herein, we present a robust, generalizable, yet intelligent polymer discovery framework, which synergizes diverse capabilities, including the in situ burning analyzer, virtual reaction generator, and material genomic model, to achieve results that surpass the sum of individual parts. Notably, the high-throughput analyzer created for the first time, grounded in multiple spectroscopic principles, enables in situ capturing of massive combustion intermediates; then, the created realistic apparatus transforming to the virtual reaction generator acquires exponentially more intermediate information; further, the proposed feature engineering tool, which embedded both polymer hierarchical structures and massive intermediate data, develops the generalizable genomic model with excellent universality (adapting over 20 kinds of polymers) and high accuracy (88.8%), succeeding discovering series of novel polymers. This emerging approach addresses the target polymer design for flame-retardant application and underscores a pivotal role in accelerating polymeric materials discovery.
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Affiliation(s)
- Ran Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Teng Fu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ya-Jie Yang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xuan Song
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiu-Li Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
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6
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Huang C, Wu Q, Li X, Pan P, Gu S, Tang T, Wu J. Silicone Bioadhesive with Shear-Stiffening Effect: Rate-Responsive Adhesion Behavior and Wound Dressing Application. Biomacromolecules 2024; 25:4510-4522. [PMID: 38877976 DOI: 10.1021/acs.biomac.4c00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Stimuli-responsive adhesives with on-demand adhesion capabilities are highly advantageous for facilitating wound healing. However, the triggering conditions of stimuli-responsive adhesives are cumbersome, even though some of them are detrimental to the adhesive and adjacent natural tissues. Herein, a novel stimuli-responsive adhesive called shear-stiffening adhesive (SSA) has been created by constructing a poly(diborosiloxane)-based silicone network for the first time, and SSA exhibits a rate-responsive adhesion behavior. Furthermore, we introduced bactericidal factors (PVP-I) into SSA and applied it as a wound dressing to promote the healing of infected wounds. Impressively, the wound dressing not only has excellent biocompatibility and long-term antibacterial properties but also performs well in accelerating wound healing. Therefore, this study provides a new strategy for the synthesis of intelligent adhesives with force rate response, which simplifies the triggering conditions by the force rate. Thus, SSA has great potential to be applied in wound management as an intelligent bioadhesive with on-demand adhesion performance.
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Affiliation(s)
- Chao Huang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Qi Wu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Xixin Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Peiyue Pan
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Shiyu Gu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Tian Tang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jinrong Wu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
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7
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He L, Chen MJ, Zeng FR, Wang T, Wei-Luo, Fang DX, Guo SQ, Deng C, Zhao HB, Wang YZ. Multiple free-radical-trapping and hydrogen-bonding-enhanced polyurethane foams with long-lasting flame retardancy, aging resistance, and toughness. MATERIALS HORIZONS 2024. [PMID: 38967543 DOI: 10.1039/d4mh00607k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Flexible polyurethane foam (FPUF) is a ubiquitous material utilized in furniture cushions, mattresses, and various technical applications. Despite the widespread use, FPUF faces challenges in maintaining long-lasting flame retardancy and aging resistance, particularly in harsh environments, while retaining mechanical robustness. Here, we present a novel approach to address these issues by enhancing FPUF through multiple free-radical-trapping and hydrogen-bonding mechanisms. A hindered amine phosphorus-containing polyol (DTAP) was designed and chemically introduced into FPUF. The distinctive synergy between hindered amine and phosphorus-containing structures enables the formation of multiple hydrogen bonds with urethane, while also effectively capturing free radicals across a broad temperature spectrum. As a result, incorporating only 5.1 wt% of DTAP led to the material successfully passing vertical burning tests and witnessing notable enhancements in tensile strength, elongation at break, and tear strength. Even after enduring accelerated thermal aging for 168 hours, the foam maintained exceptional flame retardancy and mechanical properties. This study offers novel insights into material enhancement, simultaneously achieving outstanding long-lasting flame retardancy, toughness, and anti-aging performance.
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Affiliation(s)
- Lei He
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Ming-Jun Chen
- School of Science, Xihua University, Chengdu, 610039, China.
| | - Fu-Rong Zeng
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Ting Wang
- School of Science, Xihua University, Chengdu, 610039, China.
| | - Wei-Luo
- School of Science, Xihua University, Chengdu, 610039, China.
| | - Dan-Xuan Fang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Shuai-Qi Guo
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Cong Deng
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Hai-Bo Zhao
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China.
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8
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Tian J, Yu W, Pan J, Qi Z, Lin L, Wang J, Wang C. Synthesis of a novel Si-N-S flame retardant and its application on cotton cellulose biomacromolecule. Int J Biol Macromol 2024; 273:132775. [PMID: 38823732 DOI: 10.1016/j.ijbiomac.2024.132775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/02/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
A novel flame retardant containing Si, N, and S elements, ((2-(triethoxysilyl)ethyl)thio)ethan-1-amine hydrochloride (TETEA), was synthesized via a click reaction and characterized using nuclear magnetic resonance spectroscopy (NMR) and fourier transform infrared spectroscopy (FTIR). Subsequently, the flame-retardant cotton fabric was fabricated by sol-gel method. The results indicated that TETEA was successfully loaded on cotton fabric and formed a uniform protective layer on the surface of cotton fabric, exhibiting excellent flame retardancy. The flame-retardant cotton fabric achieved limiting oxygen index (LOI) of 28.3 % and passed vertical combustion test without after-flame or afterglow time at TETEA concentration of 500 g/L. Thermogravimetric analysis revealed that the residual carbon content of the flame-retardant cotton fabric was much higher than that of the control under air and N2 conditions. Besides, the flame-retardant cotton fabric was not ignited in cone calorimeter test with an external heat flux of 35 kW/m2. The peak heat release rate and the total heat release decreased from 133.4 kW/m2 to 25.8 kW/m2 and from 26.46 MJ/m2 to 17.96 MJ/m2, respectively. This phosphorus-free flame retardant offers a simplified synthesis process without adverse environmental impacts, opening up a new avenue for the development environmentally friendly flame retardants compared to traditional alternatives.
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Affiliation(s)
- Jialong Tian
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China; School of Textile Science and Engineering, Xi'an Polytechnic University, Xian 710048, China
| | - Wenhui Yu
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China; School of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Jiang Pan
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Zhenming Qi
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Ling Lin
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Jinmei Wang
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xian 710048, China
| | - Chunxia Wang
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China; School of Textile Science and Engineering, Xi'an Polytechnic University, Xian 710048, China; School of Textile and Clothing, Nantong University, Nantong 226019, China.
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9
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Jiang H, Bu Y, Liu G, Zhang W, Cheng XW. Comparative study of polycarboxylic acids for sustainable crosslinking of silk fabrics: Evaluating flame retardancy and physical performances. Int J Biol Macromol 2024; 273:133129. [PMID: 38885864 DOI: 10.1016/j.ijbiomac.2024.133129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/20/2024]
Abstract
For protein fibers, polycarboxylic acids represent a green strategy to enhance durability without using formaldehyde. This study evaluated the physical and flame retardant properties of silk fabrics treated with three formaldehyde-free crosslinkers: citric acid (CA), 1,2,3,4-butanetetracarboxylic acid (BTCA), and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA). Results showed that these acids bond with silk protein through esterification and amidation, improving washing durability. Particularly, PBTCA integrates phosphorus into silk, boosting flame retardancy. While BTCA led to the highest weight gain and improved wrinkle recovery, it negatively impacted the tensile strength and softness of silk fabrics. Conversely, PBTCA adeptly balanced enhanced wrinkle resistance with minimal effects on tensile strength and softness, and least affected the silk fabrics' whiteness, thus preserving its aesthetic appeal. All crosslinkers improved flame retardancy, but PBTCA displayed superior performance, achieving a limiting oxygen index of 32.4 % at an 80 g/L concentration. In vertical burning tests, PBTCA treated silk fabrics showed reductions in damage length and demonstrated self-extinguishing properties, qualifying them for a higher flame retardant grade. Phosphorus in PBTCA promotes char formation during combustion, essential for effective flame retardation and smoke reduction. This research highlights the exceptional potential of silk treated with PBTCA, showcasing its suitability for demanding applications.
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Affiliation(s)
- Huiyu Jiang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies and School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, Hubei, China; Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Yanlong Bu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies and School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, Hubei, China; China National Textile and Apparel Council Key Laboratory of Flame Retardancy Finishing of Textile Materials, Soochow University, Suzhou 215123, China
| | - Geao Liu
- Toyowako Purification Materials (Jiangsu) Co., Ltd., Changzhou 213000, China
| | - Wen Zhang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies and School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, Hubei, China; China National Textile and Apparel Council Key Laboratory of Flame Retardancy Finishing of Textile Materials, Soochow University, Suzhou 215123, China; Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China.
| | - Xian-Wei Cheng
- China National Textile and Apparel Council Key Laboratory of Flame Retardancy Finishing of Textile Materials, Soochow University, Suzhou 215123, China.
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10
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Zhang B, Zhang P, Zhang G, Ma C, Zhang G. Sterically Hindered Oleogel-Based Underwater Adhesive Enabled by Mesh-Tailoring Strategy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2313495. [PMID: 38683961 DOI: 10.1002/adma.202313495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 04/13/2024] [Indexed: 05/02/2024]
Abstract
Underwater adhesives hold significant relevance in daily life and numerous industrial applications. Despite considerable efforts, developing scalable, high-performance underwater adhesives through a simple and effective method remains a formidable challenge. This study presents a novel mesh-tailoring strategy for in situ, rapid, and ultrastrong oleogel-based underwater adhesives (OUA), which comprises a highly crosslinked polyurethane network with a matching mesh size (≈2.22 nm) that precisely entraps bio-based epoxidized soybean oil (ESO) molecules (≈2.31 nm) by steric hindrance effect. This oleogel exhibits unprecedented robust mechanical properties (≈35 MPa) and maintains stability under extreme conditions, including high temperatures (100 °C), high pressures (30 MPa), and immersion in various solvents (water, ethanol, or ESO). In particular, this oleogel displays high hydrophobicity, rapid curing, and strong interface affinity, resulting in ultrahigh underwater adhesion strength (up to 2.13 MPa) and exceptional substrate universality. Moreover, the remarkable environmental adaptability and stability of OUA enable its use in harsh aqueous environments, including acidic/alkaline, saline, and extreme temperature solutions. The comprehensive capabilities of the OUA underscore its potential for building underwater structures, repairing leaky containers, and sealing broken submarine pipelines. This research establishes the foundation for the designing of next-generation underwater adhesives and offers fresh perspectives for exploring oleogel-based materials.
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Affiliation(s)
- Bin Zhang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Pengli Zhang
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Guoliang Zhang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Chunfeng Ma
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Guangzhao Zhang
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, P. R. China
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11
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Hu B, Yuan H, Chen G. Enhancement of Thermal Management Performance of Copper Foil Using Additive-Free Graphene Coating. Polymers (Basel) 2024; 16:1872. [PMID: 39000727 PMCID: PMC11244482 DOI: 10.3390/polym16131872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/25/2024] [Accepted: 06/28/2024] [Indexed: 07/17/2024] Open
Abstract
Advanced thermal interface materials with high thermal conductivity are crucial for addressing the heat dissipation issue in high-power, highly integrated electronic devices. One great potential way in this field is to take advantage of cooling copper foil (Cu) materials based on graphene (G). However, the current manufacturing of these cooling copper foil materials is accompanied by high cost, process complexity, and environmental problems, which limit their development and application. In this work, a simple, low-cost, environmentally friendly graphene-copper foil composite film (rGO/G-Cu) with high thermal conductivity was successfully prepared using graphene oxide directly as a dispersant and binder of graphene coating. The microstructure characterization, thermal conductivity and thermal management performance tests were carried out on the composite films. The results demonstrate that compared to pure copper foil (342.47 W·m-1·K-1) and 10% PVA/G-Cu (367.98 W·m-1·K-1) with polyvinyl alcohol as a binder, 10% rGO/G-Cu exhibits better thermal conductivity (414.56 W·m-1·K-1). The introduction of two-dimensional graphene oxide effectively enhances the adhesion between the coating and the copper foil while greatly improving its thermal conductivity. Furthermore, experimental results indicate that rGO/G-Cu exhibits excellent heat transfer performance and flexibility. This work is highly relevant to the development of economical and environmentally friendly materials with high thermal conductivity to meet the increasing demand for heat dissipation.
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Affiliation(s)
| | | | - Guohua Chen
- College Materials Science and Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen 361000, China; (B.H.); (H.Y.)
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12
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Zhang M, Zhao X, Bai M, Xue J, Liu R, Huang Y, Wang M, Cao J. High-Performance Engineered Composites Biofabrication Using Fungi. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309171. [PMID: 38196296 DOI: 10.1002/smll.202309171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/21/2023] [Indexed: 01/11/2024]
Abstract
Various natural polymers offer sustainable alternatives to petroleum-based adhesives, enabling the creation of high-performance engineered materials. However, additional chemical modifications and complicated manufacturing procedures remain unavoidable. Here, a sustainable high-performance engineered composite that benefits from bonding strategies with multiple energy dissipation mechanisms dominated by chemical adhesion and mechanical interlocking is demonstrated via the fungal smart creative platform. Chemical adhesion is predominantly facilitated by the extracellular polymeric substrates and glycosylated proteins present in the fungal outer cell walls. The dynamic feature of non-covalent interactions represented by hydrogen bonding endows the composite with extensive unique properties including healing, recyclability, and scalable manufacturing. Mechanical interlocking involves multiple mycelial networks (elastic modulus of 2.8 GPa) binding substrates, and the fungal inner wall skeleton composed of chitin and β-glucan imparts product stability. The physicochemical properties of composite (modulus of elasticity of 1455.3 MPa, internal bond strength of 0.55 MPa, hardness of 82.8, and contact angle of 110.2°) are comparable or even superior to those of engineered lignocellulosic materials created using petroleum-based polymers or bioadhesives. High-performance composite biofabrication using fungi may inspire the creation of other sustainable engineered materials with the assistance of the extraordinary capabilities of living organisms.
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Affiliation(s)
- Mingchang Zhang
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Xiaoqi Zhao
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Mingyang Bai
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Jing Xue
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
- Public Analysis and Test Center, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Ru Liu
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, P. R. China
| | - Yuxiang Huang
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, P. R. China
| | - Mingzhi Wang
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Jinzhen Cao
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
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13
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Chen H, Ji G, Lan F, Wang Z, Chen C, Luan J, Dong C, Lu Z. B/P/N flame retardant based on diboraspiro rings groups for improving the flame retardancy, char formation properties and thermal stability of cotton fabrics. Int J Biol Macromol 2024; 270:132330. [PMID: 38750840 DOI: 10.1016/j.ijbiomac.2024.132330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/11/2024] [Accepted: 05/10/2024] [Indexed: 05/18/2024]
Abstract
Developing flame retardant cotton fabrics (CF) is crucial for minimizing the harm caused by fires to people. To improve the flame retardancy of CF, this paper has synthesized a novel flame retardant called diboraspiro tetra phosphonate ammonium salt (N-PDBDN). The structure of N-PDBDN has been analyzed using FT-IR and NMR. Treating CF with N-PDBDN can increase the limiting oxygen index (LOI) to 36.2 % with a weight gain of 10.1 %. Moreover, even after undergoing 50 laundering cycles (LCs), the LOI remains at 27.1 %, indicating good flame retardancy and durability. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) show the presence of P and N elements on N-PDBDN treated CF, suggesting successful bonding between N-PDBDN and cellulose. Thermogravimetric analysis (TGA) results demonstrate that the addition of N-PDBDN significantly enhances the thermal stability and carbon formation ability of CF. Furthermore, cone calorimetry tests reveal reduced heat release rates (HRR), prolonged time to ignition (TTI), and 38 % lower total heat release (THR) in CF treated with N-PDBDN compared with pure cotton. Finally, a potential flame retardant mechanism involving N-PDBDN is proposed. These findings indicate that incorporating an ammonium phosphate group into CF can effectively improve the flame retardancy and durability.
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Affiliation(s)
- Hongfei Chen
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Gongze Ji
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Fengying Lan
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Zheng Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Chen Chen
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Jiaxi Luan
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Chaohong Dong
- Institute of Functional Textiles and Advanced Materials, College of Textile and Clothing, State Key Laboratory of Bio-fibers and Eco-textiles, Qingdao University, Qingdao 266071, PR China.
| | - Zhou Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China.
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14
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Zhang X, Li P, Liu Z, Wang H, Zhu P. Eco-friendly multifunctional coating for polyester-cotton blended fabrics with superior flame retardancy and antibacterial properties. Int J Biol Macromol 2024; 271:132407. [PMID: 38754665 DOI: 10.1016/j.ijbiomac.2024.132407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 04/21/2024] [Accepted: 05/13/2024] [Indexed: 05/18/2024]
Abstract
Since the fire hazards of polyester-cotton blended (PTCO) fabrics and the hidden dangers of bacterial infection concerns caused by the contained cotton fiber, the design of flame retardant and antibacterial PTCO fabrics has received considerable attention. In this work, flame-retardant PTCO fabrics with satisfactory antibacterial properties were fabricated via a convenient and eco-friendly impregnation treatment involving guanidine phosphate (GP) and polyethylenimine (PEI). The prepared PTCO fabrics demonstrated excellent flame retardancy with a high limiting oxygen index value of 30.5 % and self-extinguishing capability, the damaged length was only 34 mm in the vertical flammability test. Furthermore, the peak heat release rate and the total heat release of coated PTCO fabrics were reduced significantly by 49 % and 38 %, respectively, indicating a substantial enhancement in fire safety. According to the analysis of the char residues and volatiles, GP presented great catalytic carbonization property, and PEI assisted the formation of the dense and stable carbon layer. The stable carbon layer effectively restricted mass and oxygen transfer between the PTCO fabrics and the environment. In addition, the introduction of PEI also produced more nonflammable gases to enhance the flame retardancy of the PTCO fabrics. Importantly, the GP/PEI coating barely deteriorate the physical and mechanical properties of the PTCO fabrics. The antibacterial rate of the GP/PEI-coated PTCO fabrics against Escherichia coli and Staphylococcus aureus was 99.99 %, similar to that of GP-coated fabrics, indicating the efficacy antibacterial properties of GP, and the addition of PEI did not compromise the antibacterial properties of GP. This work offers an efficient and simple approach to producing multifunctional PTCO fabrics with excellent flame retardancy and antibacterial properties, which are hopeful to expand the promising application of PTCO fabrics.
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Affiliation(s)
- Xiaoyun Zhang
- College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame Retardant Textile Materials, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, China
| | - Ping Li
- College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame Retardant Textile Materials, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, China
| | - Zhanna Liu
- College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame Retardant Textile Materials, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, China
| | - Huaifang Wang
- College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame Retardant Textile Materials, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, China..
| | - Ping Zhu
- College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame Retardant Textile Materials, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, China..
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15
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Wang W, An Z, Wang Z, Wang S. Chemical Design of Supramolecular Reversible Adhesives for Promising Applications. Chemistry 2024; 30:e202304349. [PMID: 38308610 DOI: 10.1002/chem.202304349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 02/05/2024]
Abstract
Supramolecular reversible adhesives have garnered significant attention due to their potential applications in various fields. These adhesives exhibit remarkable properties such as reversible adhesion, self-healing, and high flexibility. This concept aims to present a comprehensive overview of the current research progress in developing supramolecular reversible adhesives. Firstly, the fundamentals of supramolecular chemistry and the principles underlying the design and synthesis of reversible adhesive systems are discussed. Next, the concept focuses on characterizing the reversible adhesion strength of supramolecular adhesive systems that have been developed. The adhesion performance of supramolecular reversible adhesives is summarized, highlighting their unique characteristics and promising applications. Finally, the challenges and future perspectives in the field of supramolecular reversible adhesives are discussed. The comprehensive overview provided in this concept aims to inspire further research and innovation in this exciting field.
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Affiliation(s)
- Wenbo Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zixin An
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhao Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shutao Wang
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123, P. R. China
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16
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Zeng F, He L, Ma J, Fang D, Zeng Z, Bai T, Ding R, Liu B, Zhao H, Wang Y. Microcage flame retardants with complete recyclability and durability via reversible interfacial locking engineering. MATERIALS HORIZONS 2024; 11:1867-1876. [PMID: 38454889 DOI: 10.1039/d4mh00116h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Flame retardants are effective in protecting materials from fire but pose environmental challenges due to limited recyclability. Urgently needed for circular material economy are new flame retardants that are chemically recyclable and durable. Here, we report a new facile and scalable strategy for engineering reversible microcages with infinite chemical recyclability to starting monomers, exceptional durability, and versatile flame retardancy. This is achieved through a highly synergistic hierarchical assembly of easily obtainable phosphoric acid and Cu2+ monomers. By leveraging dynamic reversible assembly networks, microcages can be circularly and infinitely dissociated into starting monomers via eco-friendly pH adjustment. Remarkable recovery rates of 92% for phosphoric acid and 96.2% for Cu2+ monomers are achieved, while the separated virgin matrix undergoes conventional chemical recycling, facilitating reformulation and seamless reintroduction into new supply chains as needed. Notably, when integrated with matrix-like surfaces, microcage clasp matrices tightly engage through in situ formed interfacial locking structures, showcasing outstanding flame-retardant efficiency, prolonged durability in hydrothermal aging, and extensive applicability across diverse polymeric materials such as polyurethane, epoxy resin, and polycarbonate. This study emphasizes a novel, straightforward, and scalable chemical platform, utilizing reversible interfacial locking engineering, for the development of flame retardants that are not only infinitely recyclable but also durable and broadly applicable.
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Affiliation(s)
- Furong Zeng
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Lei He
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Jianwen Ma
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Danxuan Fang
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Zhiwei Zeng
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Tongyu Bai
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Rong Ding
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Bowen Liu
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Haibo Zhao
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
| | - Yuzhong Wang
- School of Chemical Engineering, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, No. 24, South Section 1, Yihuan Road, Chengdu, Sichuan 610064, China.
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17
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Zhang L, Zhang AN, He SM, Zheng GQ, Zeng FR, Wang YZ, Liu BW, Zhao HB. Biomimetic Nanoporous Transparent Universal Fire-Resistant Coatings. ACS APPLIED MATERIALS & INTERFACES 2024; 16:19519-19528. [PMID: 38580622 DOI: 10.1021/acsami.4c00570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
The inherent flammability of most polymeric materials poses a significant fire hazard, leading to substantial property damage and loss of life. A universal flame-retardant protective coating is considered as a promising strategy to mitigate such risks; however, simultaneously achieving high transparency of the coatings remains a great challenge. Here, inspired by the moth eye effect, we designed a nanoporous structure into a protective coating that leverages a hydrophilic-hydrophobic interactive assembly facilitated by phosphoric acid protonated amino siloxane. The coating demonstrates robust adhesion to a diverse range of substrates, including but not limited to fabrics, foams, paper, and wood. As expected, its moth-eye-inspired nanoporous structure conferred a high visible light transparency of >97% and water vapor transmittance of 96%. The synergistic effect among phosphorus (P), nitrogen (N), and silicon (Si) largely enhanced the char-forming ability and restricted the decomposition of the coated substrates, which successfully endowed the coating with high fire-fighting performance. More importantly, for both flexible and rigid substrates, the coated samples all possessed great mechanical properties. This work provides a new insight for the design of protective coatings, particularly focusing on achieving high transparency.
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Affiliation(s)
- Lin Zhang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ai-Ning Zhang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shuang-Mei He
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Guan-Qi Zheng
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Fu-Rong Zeng
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Bo-Wen Liu
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hai-Bo Zhao
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu 610064, China
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18
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Bhardwaj S, Singh S, Dev K, Chhajed M, Maji PK. Harnessing the Flexibility of Lightweight Cellulose Nanofiber Composite Aerogels for Superior Thermal Insulation and Fire Protection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18075-18089. [PMID: 38560888 DOI: 10.1021/acsami.4c01803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Thermally insulating materials from renewable and readily available resources are in high demand for ecologically beneficial applications. Cellulose aerogels made from lignocellulosic waste have various advantages. However, they are fragile and breakable when bent or compressed. In addition, cellulose aerogels are flammable and weather-sensitive. Hence, to overcome these problems, this work included the preparation of polyurethane (PU)-based cellulose nanofiber (CNF) aerogels that had flexibility, flame retardancy, and thermal insulation. Methyl trimethoxysilane (MTMS) and water-soluble ammonium polyphosphate (APP) were added to improve the cross-linking, hydrophobicity, and flame-retardant properties of aerogels. The flexibility of chemically cross-linked CNF aerogels is enhanced through the incorporation of polyurethane via the wet coagulating process. The aerogels obtained during this study have exhibited low weight (density: 35.3-91.96 kg/m3) together with enhanced hydrophobic properties, flame retardancy, and decreased thermal conductivity (26.7-36.7 mW/m K at 25 °C). Additionally, the flame-retardant properties were comprehensively examined and the underlying mechanism was deduced. The aerogels prepared in this study are considered unique in the nanocellulose aerogel category due to their integrated structural and performance benefits. The invention is considered to substantially contribute to the large-scale manufacture and use of insulation in construction, automobiles, and aerospace.
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Affiliation(s)
- Shakshi Bhardwaj
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247001, India
| | - Shiva Singh
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247001, India
| | - Keshav Dev
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Monika Chhajed
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247001, India
| | - Pradip K Maji
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247001, India
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19
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Song X, Lv HB, Shi MM, Shao ZB, Wang YZ. Calcium gluconate-based flame retardant towards simultaneously high-efficiency fire safety and mechanical enhancement for epoxy resin. Int J Biol Macromol 2024; 264:130409. [PMID: 38417750 DOI: 10.1016/j.ijbiomac.2024.130409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/05/2024] [Accepted: 02/21/2024] [Indexed: 03/01/2024]
Abstract
Flame retardants containing biomass receive growing interest in environmental friendliness and sustainability but usually face the low flame-retardant efficiency and deterioration on mechanical property of matrix. Herein, a calcium gluconate-based flame retardant (CG@APP) was chemically prepared using calcium gluconate (CG) and ammonium polyphosphate (APP) via ion exchange reaction, and enabled the excellent fire safety and mechanical enhancement for epoxy resin (EP). The resulted EP composites containing 6 wt% CG@APP (EP/CG@APP6) exhibited V-0 ratings in UL-94 test. Furthermore, with respect to EP/APP6, the peak of heat release rate (pHRR) and peak of smoke production rate (pSPR) of EP/CG@APP6 decreased by 70.5 % and 50.0 %, respectively. The well synergistic flame-retardant mechanism of CG@APP between gaseous and solid phases was revealed to generate denser and more continuous charring residuals, which could do well work on insulation for heat transfer and fuel diffusion. In addition, the shell rich in hydroxyl group and Ca2+ on the surface of CG@APP well enhanced the interface compatibility through the hydrogen bond and coordinated bond, thus the tensile strength, flexural strength and impact strength of EP/CG@APP6 increased by 18.2 %, 4.5 % and 9.1 % compared with pure EP, respectively. This work provided a simple and sustainable way to construct excellent fire-safety composites.
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Affiliation(s)
- Xiang Song
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China
| | - Hong-Bin Lv
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China
| | - Miao-Miao Shi
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China
| | - Zhu-Bao Shao
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China.
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), College of Chemistry, Sichuan University, Chengdu 610064, China.
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20
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Li M, Li X, Xu K, Qin A, Yan C, Xu Y, Shan D, Wang J, Xu M, Li X, Li B, Liu L. Construction and mechanism analysis of flame-retardant, energy-storage and transparent bio-based composites based on natural cellulose template. Int J Biol Macromol 2024; 263:130317. [PMID: 38387629 DOI: 10.1016/j.ijbiomac.2024.130317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/01/2024] [Accepted: 02/18/2024] [Indexed: 02/24/2024]
Abstract
With the proposal of sustainable development strategy, bio-based energy storage transparent wood (TW) has shown broad application value in green buildings, cold chain transportation, and optoelectronic device fields. However, its application in most fields is limited due to its own flammability. In this study, epoxy resin, triethyl phosphate (TEP) and polyethylene glycol (PEG) were introduced into delignified balsa wood template by vacuum pressure impregnation, and bio-based TW/PEG/TEP integrating flame retardant, high strength and phase-change energy-storage performance was prepared. TW/PEG composites have no leakage during phase change process and their transparency is up to 95 %. Compared with TW/PEG, the shielding effect of char layer and the inhibition effect in condensed and gas phase significantly decrease the total heat release of TW/PEG/TEP. TW/PEG/TEP biocomposites still maintained a high enthalpy of phase change and a low peak melting temperature, which was conducive to its application around the area of low temperature phase change energy storage. In addition, the tensile strength of TW/PEG/TEP was nearly 4 times higher than that of DW, and its toughness was obviously enhanced. TW/PEG/TEP biocomposites conformed to the current concept of energy-saving and green development. It has the potential to replace traditional petrochemical-based materials and shows excellent application prospects in emerging fields.
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Affiliation(s)
- Mixue Li
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Xu Li
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China
| | - Kai Xu
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Ao Qin
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Chentao Yan
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Yue Xu
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Depeng Shan
- State Grid Heilongjiang Electric Power Company Limited, Harbin 150040, China
| | - Jinlong Wang
- State Grid Heilongjiang Electric Power Company Limited, Harbin 150040, China
| | - Miaojun Xu
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Xiaoli Li
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Bin Li
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Lubin Liu
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
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21
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Park Y, Kim J, Ahn D, Yu Y, Lee W, Kwon MS. Biomass-Derived Optically Clear Adhesives for Foldable Displays. CHEMSUSCHEM 2024:e202301795. [PMID: 38551333 DOI: 10.1002/cssc.202301795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 03/13/2024] [Indexed: 05/24/2024]
Abstract
Novel acrylate monomers, derived from terpenes are synthesized for use in optically clear adhesives (OCAs) suitable for foldable displays. These OCAs are prepared using visible-light-driven polymerization, an eco-friendly method. Through physical, rheological, and mechanical characterization, the prepared OCAs possess low modulus and exhibit outstanding creep and recovery properties, making them suitable for foldable devices.
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Affiliation(s)
- Youngjoo Park
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Junkyu Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dowon Ahn
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology, Ulsan, 44412, Republic of Korea
| | - Youngchang Yu
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology, Ulsan, 44412, Republic of Korea
| | - Wonjoo Lee
- Center for Advanced Specialty Chemicals, Korea Research Institute of Chemical Technology, Ulsan, 44412, Republic of Korea
| | - Min Sang Kwon
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
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22
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Luo W, Chen MJ, Wang T, Feng JF, Fu ZC, Deng JN, Yan YW, Wang YZ, Zhao HB. Catalytic polymer self-cleavage for CO 2 generation before combustion empowers materials with fire safety. Nat Commun 2024; 15:2726. [PMID: 38548723 PMCID: PMC10978860 DOI: 10.1038/s41467-024-46756-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 03/08/2024] [Indexed: 04/01/2024] Open
Abstract
Polymeric materials, rich in carbon, hydrogen, and oxygen elements, present substantial fire hazards to both human life and property due to their intrinsic flammability. Overcoming this challenge in the absence of any flame-retardant elements is a daunting task. Herein, we introduce an innovative strategy employing catalytic polymer auto-pyrolysis before combustion to proactively release CO2, akin to possessing responsive CO2 fire extinguishing mechanisms. We demonstrate that potassium salts with strong nucleophilicity (such as potassium formate/malate) can transform conventional polyurethane foam into materials with fire safety through rearrangement. This transformation results in the rapid generation of a substantial volume of CO2, occurring before the onset of intense decomposition, effectively extinguishing fires. The inclusion of just 1.05 wt% potassium formate can significantly raise the limiting oxygen index of polyurethane foam to 26.5%, increase the time to ignition by 927%, and tremendously reduce smoke toxicity by 95%. The successful application of various potassium salts, combined with a comprehensive examination of the underlying mechanisms, underscores the viability of this strategy. This pioneering catalytic approach paves the way for the efficient and eco-friendly development of polymeric materials with fire safety.
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Affiliation(s)
- Wei Luo
- Green Preparation and Recycling Laboratory of Functional Polymeric Materials, College of Science, Xihua University, Chengdu, Sichuan, 610039, China
| | - Ming-Jun Chen
- Green Preparation and Recycling Laboratory of Functional Polymeric Materials, College of Science, Xihua University, Chengdu, Sichuan, 610039, China.
| | - Ting Wang
- Green Preparation and Recycling Laboratory of Functional Polymeric Materials, College of Science, Xihua University, Chengdu, Sichuan, 610039, China
| | - Jin-Feng Feng
- Green Preparation and Recycling Laboratory of Functional Polymeric Materials, College of Science, Xihua University, Chengdu, Sichuan, 610039, China
| | - Zhi-Cheng Fu
- Green Preparation and Recycling Laboratory of Functional Polymeric Materials, College of Science, Xihua University, Chengdu, Sichuan, 610039, China
| | - Jin-Ni Deng
- Green Preparation and Recycling Laboratory of Functional Polymeric Materials, College of Science, Xihua University, Chengdu, Sichuan, 610039, China
| | - Yuan-Wei Yan
- Zhuzhou Times New Material Technology Co., Ltd., Zhuzhou, 412007, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Hai-Bo Zhao
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China.
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23
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Cao Y, Liu X, Du X, Ren X, Jia F, Gao G. Solvent-Resistant Adhesive Gel with Thermal Post-Tunability. ACS APPLIED MATERIALS & INTERFACES 2024; 16:8140-8150. [PMID: 38295314 DOI: 10.1021/acsami.3c18076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Adhesives have received extensive attention in flexible bioelectronics, wearable electronic medical devices, and biofuel cells. However, it is a challenge to achieve late regulation of performance once polymer-based gels are formed. Here, a double-network organogel composed of a hydrophilic and hydrophobic polymer network and a polyamide acid network was successfully prepared. In diverse liquid environments (including isopropyl alcohol, glycerol, epichlorohydrin, n-propanol, dichloromethane, triethanolamine, ethanol absolute, hydrogen peroxide, and ethyl acetate), the organogel adhesive demonstrated remarkable properties. It exhibits a strong tensile strength of 200 kPa, a high fracture strain reaching 560%, and an impressive adhesion strength of 38 kPa. In addition, the organogel demonstrates exceptional adhesive properties toward polytetrafluoroethylene, plastics, metals, rubber, and glass. Note that the organogel could also regulate adhesive and tough performance by thermally triggering a cyclization reaction even after the organogel has been formed. The strategy provides a new idea for designing soft materials with post-tunability.
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Affiliation(s)
- Yaxuan Cao
- Polymeric and Soft Materials Laboratory, School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, No. 2055, Yan'an Street, Changchun 130012, China
| | - Xin Liu
- Polymeric and Soft Materials Laboratory, School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, No. 2055, Yan'an Street, Changchun 130012, China
| | - Xuan Du
- Polymeric and Soft Materials Laboratory, School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, No. 2055, Yan'an Street, Changchun 130012, China
| | - Xiuyan Ren
- Polymeric and Soft Materials Laboratory, School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, No. 2055, Yan'an Street, Changchun 130012, China
| | - Fei Jia
- Polymeric and Soft Materials Laboratory, School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, No. 2055, Yan'an Street, Changchun 130012, China
| | - Guanghui Gao
- Polymeric and Soft Materials Laboratory, School of Chemical Engineering and Advanced Institute of Materials Science, Changchun University of Technology, No. 2055, Yan'an Street, Changchun 130012, China
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24
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Lu X, Xie P, Li X, Li T, Sun J. Acid-Cleavable Aromatic Polymers for the Fabrication of Closed-Loop Recyclable Plastics with High Mechanical Strength and Excellent Chemical Resistance. Angew Chem Int Ed Engl 2024; 63:e202316453. [PMID: 38130147 DOI: 10.1002/anie.202316453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023]
Abstract
Although closed-loop recycling of dynamic covalent bond-based plastics does not require catalysts, their mechanical strength and chemical stability remain a major concern. In this study, closed-loop recyclable poly(aryl imine) (PAI) plastics with high mechanical strength and excellent chemical resistance are fabricated by copolymerizing aromatic amines and aromatic aldehydes through dynamic imine bonds. The resulting PAI plastic with a tensile strength of 58.2 MPa exhibits excellent chemical resistance and mechanical stability in acidic and basic aqueous solutions and various organic solvents. The PAI plastics can be depolymerized in a mixed solvent of tetrahydrofuran (THF)/HCl aqueous solution through the dissociation of imine bonds, and the monomers can be facilely recovered with high purity and isolated yields due to the solubility difference between the aromatic amines and aromatic aldehydes in selective solvents. The efficient closed-loop recycling of the PAI plastic can also be realized through monomer conversion because the hydrolysis of the aromatic aldehydes generates aromatic amines. The recovered monomers can be used to re-fabricate original PAI plastics. This PAI plastic can be selectively recovered from complicated mixed polymer waste streams due to the mild depolymerization conditions of the PAI plastic and its high stability in most organic solvents.
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Affiliation(s)
- Xingyuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Peng Xie
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Xiang Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Tianqi Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Junqi Sun
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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25
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Li SL, Wang YT, Zhang SJ, Sun MZ, Li J, Chu LQ, Hu CX, Huang YL, Gao DL, Schiraldi DA. A Novel, Controllable, and Efficient Method for Building Highly Hydrophobic Aerogels. Gels 2024; 10:121. [PMID: 38391450 PMCID: PMC10888267 DOI: 10.3390/gels10020121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/20/2023] [Accepted: 01/09/2024] [Indexed: 02/24/2024] Open
Abstract
Aerogels prepared using freeze-drying methods have the potential to be insulation materials or absorbents in the fields of industry, architecture, agriculture, etc., for their low heat conductivity, high specific area, low density, degradability, and low cost. However, their native, poor water resistance caused by the hydrophilicity of their polymer matrix limits their practical application. In this work, a novel, controllable, and efficient templating method was utilized to construct a highly hydrophobic surface for freeze-drying aerogels. The influence of templates on the macroscopic morphology and hydrophobic properties of materials was investigated in detail. This method provided the economical and rapid preparation of a water-resistant aerogel made from polyvinyl alcohol (PVA) and montmorillonite (MMT), putting forward a new direction for the research and development of new, environmentally friendly materials.
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Affiliation(s)
- Shu-Liang Li
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - Yu-Tao Wang
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - Shi-Jun Zhang
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - Ming-Ze Sun
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106-7202, USA
| | - Jie Li
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - Li-Qiu Chu
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - Chen-Xi Hu
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - Yi-Lun Huang
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - Da-Li Gao
- SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., 14 Beisanhuan East Road, Chaoyang District, Beijing 100013, China
| | - David A Schiraldi
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106-7202, USA
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26
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Sun X, Yu Q, Wang F, Hu S, Zhou J, Liu Y, Jiang Z, Wang X, Yu Y, Yang H, Wang C. Sustainable lignocellulose aerogel for air purifier with thermal insulation, flame retardancy, mechanical strength, and its life cycle assessment. Int J Biol Macromol 2024; 257:128599. [PMID: 38056738 DOI: 10.1016/j.ijbiomac.2023.128599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 12/08/2023]
Abstract
High-performance biomass materials with good thermal insulation, flame retardrancy, and mechanical properties are urgently required for thermal management. Herein, a novel lignocellulose aerogel treated using a recyclable deep eutectic solvent (DES) was physically mixed with tourmaline particles (TPs) to enhance its structural stability, flame retardancy, and mechanical properties. The optimized TPs-modified lignocellulose aerogel (TLA-4) had good comprehensive performances due to the synergistic effect of ammonium sulfate and TPs. Compared with TPs-free lignocellulose aerogel (LA), the total heat release (THR) and heat release rate (HRR) of TLA-4 were reduced by 62.0 % and 66.3 %, respectively, and the limiting oxygen index (LOI) of TLA-4 was drastically enhanced by 74.1 %. TLA-4 also exhibited a low thermal conductivity of 29.67 mW/mK, showing favorable thermal insulation performance. When compressed to 5 %, the mechanical strength of TLA-4 increased by 8.3 times. Meanwhile, the presence of TPs and abundant pores in the aerogel contributed to the release of negative oxygen ions (NOIs), aiding air purification. A life cycle assessment (LCA) indicated that this composite had a minimal environmental impact (EI) in 17 categories compared to other similar aerogels. The proposed strategy for preparing an environment-friendly lignocellulose aerogel offers significant potential for applications in home decoration and building materials.
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Affiliation(s)
- Xiaohan Sun
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Qianqian Yu
- College of Chemistry and Bioengineering, Hechi University, Hechi 546300, PR China
| | - Fangmiao Wang
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Senwei Hu
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Jiazuo Zhou
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Yifan Liu
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Zishuai Jiang
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Xin Wang
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Yuan Yu
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Haiyue Yang
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China.
| | - Chengyu Wang
- Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, PR China.
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27
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Fan S, Gao X, Yang X, Li X. Infusing phytate-based biomass flame retardants into the cellulose lumens of Chinese fir wood attains superior flame retardant efficacy. Int J Biol Macromol 2024; 258:128975. [PMID: 38147971 DOI: 10.1016/j.ijbiomac.2023.128975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 12/28/2023]
Abstract
To be suitable for certain construction and furniture applications, wood must be treated with a flame retardant and impregnating flame retardants into the cellulose lumens of wood is an effective flame retardant method. Phytic acid, the main storage form of phosphorus in various plant tissues, is an inexpensive, and non-toxic biomaterial that shows potential applications as an environmentally friendly bio-based flame retardant. In this study, phytic acid and zinc phytate were used to impregnate delignified wood under vacuum and pressure, which greatly enhanced the flame retardancy and smoke suppression properties of Chinese fir, while still maintaining its original texture. Phytic acid and zinc phytate were hydrogen-bonded to cellulose in wood. Phytic acid and zinc phytate were hydrogen-bonded to cellulose in wood. The results showed that the total heat release (THR) of Chinese fir treated with zinc phytate decreased from 55.66 MJ/m2 to 5.90 MJ/m2, and a compact carbonized protective layer was quickly formed on the surface of Chinese fir after ignition. Thermogravimetric analysis (TGA) showed that the char yield of Chinese fir treated by the flame retardant was 177.6 % higher than that of untreated wood. This study provides an efficient, sustainable, and economical method to prepare Chinese fir with excellent flame retardancy and thermal insulation performance.
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Affiliation(s)
- Shutong Fan
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Xun Gao
- College of Architecture and Energy Engineering, Wenzhou University of Technology, Wenzhou 325006, China
| | - Xi Yang
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
| | - Xianjun Li
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
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28
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Du L, Wang S, Zhu P, Jiang Z. Eco-friendly phosphorus-free flame-retardant coating for microfiber synthetic leather via alginate-based layer-by-layer technology. Int J Biol Macromol 2024; 258:129007. [PMID: 38151082 DOI: 10.1016/j.ijbiomac.2023.129007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 12/29/2023]
Abstract
The excellent comprehensive properties of microfiber synthetic leathers have led to their wide application in various aspects of our lives. However, the issue of flammability remains a significant challenge that needs to be addressed. Nowadays, the bio-based chemicals used in the flame-retardant materials have extremely grabbed our eyes. Herein, we developed an ecologically friendly flame-retardant microfiber synthetic leather using phosphorus-free layer-by-layer assembly technology (LBL) based on natural polysaccharide alginate (SA) coupled with polyethyleneimine (PEI) and 3-aminopropyltriethoxysilane (APTES). The effect of different LBL coating systems on the flame retardancy of microfiber synthetic leather was investigated. The results demonstrated that the introduction of APTES can completely inhibit the melt-dripping by enhancing char formation through silica elements. Furthermore, the trinary coating system consisting of SA/APTES/PEI exhibited excellent flame retardancy by combining gas-phase action from PEI and condensed-phase function from APTES. This modified microfiber synthetic leather showed a significantly higher limiting oxygen index (LOI) value of 33.0 % with no molten droplet. Additionally, the SA-based coating slightly suppressed the heat release, resulting in a 20 % reduction in total heat release during the combustion test. Overall, this work presents a facile and environmentally-friendly approach for achieving flame-retardant and anti-dripping microfiber synthetic leather.
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Affiliation(s)
- Lei Du
- Institute of Functional Textiles and Advanced Materials, College of Textiles and Clothing, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, Qingdao University, Qingdao 266071, China
| | - Shijie Wang
- Institute of Functional Textiles and Advanced Materials, College of Textiles and Clothing, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, Qingdao University, Qingdao 266071, China
| | - Ping Zhu
- Institute of Functional Textiles and Advanced Materials, College of Textiles and Clothing, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, Qingdao University, Qingdao 266071, China
| | - Zhiming Jiang
- Institute of Functional Textiles and Advanced Materials, College of Textiles and Clothing, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame-Retardant Textile Materials, Qingdao University, Qingdao 266071, China.
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Lee S, Park J, Ma H, Kim W, Song YK, Lee DW, Noh SM, Yoon SJ, Yang C. Multifunctional Acrylic Polymers with Enhanced Adhesive Property Serving as Excellent Edge Encapsulant for Stable Optoelectronic Devices. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5138-5148. [PMID: 38258415 DOI: 10.1021/acsami.3c16598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Pendant groups in acrylic adhesive polymers (Ads) have a profound influence on adhesive and cohesive properties and additionally on encapsulant application. However, a systematic investigation to assess the impact of the pendant groups' length and bulkiness is rare, and there is not even a single report on applying Ads as interfacial adhesion promotors and encapsulation materials simultaneously. Herein, we have developed a series of multifunctional methacrylic polymers, namely, R-co-Ads, with varying pendant length and bulkiness (R = methyl (C1), ethyl (C2), propyl (C3), butyl (C4), pentyl (C5), hexyl (C6), isobutyl (iC4), and 2-ethylhexyl (2EH)). The adhesion-related experimental results reveal that R-co-Ads have high transparency, strong adhesion strength to the various contact surfaces, and a fast cure speed. In particular, C1-co-Ad shows a superior adhesion performance with an improved cross-cut index of 4B and a shear bonding strength of 1.56 MPa. We also have adopted C1-co-Ad for encapsulation of various emerging optoelectronic applications (e.g., perovskite solar cell-, charge transport-, and conductivity-related characteristics), demonstrating its excellent edge encapsulant served to improve the device stability against ambient air conditions. Our study establishes the structure-adhesion-surface relationships, advancing the better design of adhesives and encapsulants for various research fields.
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Affiliation(s)
- Seunglok Lee
- School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
| | - Jeewon Park
- School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
| | - Hayoung Ma
- School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
| | - Wonjun Kim
- School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
| | - Young Kyu Song
- NOROO Automotive Coatings Co., Ltd, Jangangongdan-7-gil, Jangan-myeon, Hwaseong-si, Gyeonggi-do 18579, South Korea
| | - Dong Woog Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
| | - Seung Man Noh
- Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology, Ulsan 44412, South Korea
| | - Seong-Jun Yoon
- School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
| | - Changduk Yang
- School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
- Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, Ulju-gun 44919, South Korea
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30
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Zhang M, Xue J, Zhang R, Zhang W, Peng Y, Wang M, Cao J. Mycelium Composite with Hierarchical Porous Structure for Thermal Management. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302827. [PMID: 37403285 DOI: 10.1002/smll.202302827] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/13/2023] [Indexed: 07/06/2023]
Abstract
High-performance porous materials with a low carbon footprint provide sustainable alternatives to petroleum-based lightweight foams and can help meet carbon neutrality goals. However, these materials generally face a trade-off between thermal management capabilities and structural strength. Here, a mycelium composite with a hierarchical porous structure, including both macro- and microscale pores, produced from multiple and advanced mycelial networks (elastic modulus of 1.2 GPa) binding loosely distributed sawdust is demonstrated. The morphological, biological, and physicochemical properties of the filamentous mycelium and composites are discussed in terms of how they are influenced by the mycelial system of the fungi and the way they interact with the substrate. The composite shows a porosity of 0.94, a noise reduction coefficient of 0.55 at a frequency range of 250-3000 Hz (for a 15 mm thick sample), a thermal conductivity of 0.042 W m-1 K-1 , and an energy absorption of 18 kJ m-3 at 50% strain. It is also hydrophobic, repairable, and recyclable. It is expected that the hierarchical porous structural composite with excellent thermal and mechanical properties can make a significant impact on the future development of highly sustainable alternatives to lightweight plastic foams.
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Affiliation(s)
- Mingchang Zhang
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Jing Xue
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Runhua Zhang
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Wenliang Zhang
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Yao Peng
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Mingzhi Wang
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
| | - Jinzhen Cao
- MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, P. R. China
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Shah AUR, Jalil A, Sadiq A, Alzaid M, Naseem MS, Alanazi R, Alanazi S, Alanzy AO, Alsohaimi IH, Malik RA. Effect of Rice Husk and Wood Flour on the Structural, Mechanical, and Fire-Retardant Characteristics of Recycled High-Density Polyethylene. Polymers (Basel) 2023; 15:4031. [PMID: 37836079 PMCID: PMC10575034 DOI: 10.3390/polym15194031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Given the rising consumption of plastic products, it is becoming imperative to prioritize the recycling of plastic items as a solution to reducing plastic waste and environmental pollution. In this context, this research focuses on assessing the impact of incorporating rice husk and wood flour into recycled high-density polyethylene (rec-HDPE) to analyze its mechanical properties, flammability, and thermal stability. The combined rec-HDPE content of wood flour and rice husk varied between 0% and 20%. The rec-HDPE content of maleic anhydride grafted polyethylene (MAPE) was fixed at 3%. Mechanical characteristics such as flexural, tensile, and impact strengths were assessed. Cone calorimetry (CC) tests, limited oxygen index (LOI) tests, and horizontal and vertical burning tests were performed to determine the flammability or fire retardancy of these composites. On the other hand, to characterize the thermal characteristics of these composites, thermogravimetric analysis (TGA) was used. To further characterize the fluctuation in these characteristics, scanning electron microscopy (SEM) and infrared spectroscopy (FTIR) studies were carried out. The mechanical characteristics were found to be increased in response to adding rice husk or wood flour. An 8% increase in tensile strength and a 20% increase in elastic modulus enhancement were recorded for a 20% rice husk-added composite. SEM revealed the reason for the variation in tensile properties, based on the extent of agglomeration and the extent of uniform distribution of fillers in rec-HDPE. Following these lines, the 20% rice husk-added composite also showed a maximum increase of around 6% in its flexural strength and a maximum increase of 50% in its flexural modulus. A decrease in impact strength was recorded for rice husk and wood flour-reinforced composites, compared with unreinforced rec-HDPE. Hybrid composites displayed a lack of mechanical strength due to changes in their nature. FTIR tests were performed for a much more elaborate analysis to confirm these results. Twenty percent of rice husk-added rec-HDPE displayed the best thermal properties that were tested, based on TGA and derivative thermogravimetric (DTG) analysis. This 20% composite also displayed the best fire-retardancy characteristics according to UL 94 tests, cone calorimetry tests, and limited oxygen index tests, due to the barrier created by the silica protective layer. These tests demonstrated that the incorporation of both fillers-rice husk and wood flour-effectively enhanced the thermal, mechanical, and fire-retardant attributes of recycled HDPE.
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Affiliation(s)
- Atta Ur Rehman Shah
- Department of Mechanical Engineering, COMSATS University Islamabad, Wah Campus, Wah Cantt 47040, Pakistan
| | - Abdul Jalil
- Department of Mechanical Engineering, HITEC University, Taxila 47050, Pakistan
| | - Atiya Sadiq
- Department of Mechanical Engineering, HITEC University, Taxila 47050, Pakistan
| | - Meshal Alzaid
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Muhammad Shoaib Naseem
- Department of Mechanical Engineering, COMSATS University Islamabad, Wah Campus, Wah Cantt 47040, Pakistan
| | - Rakan Alanazi
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Sultan Alanazi
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Abdullatyf Obaid Alanzy
- Department of Physics, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia (A.O.A.)
| | - Ibrahim Hotan Alsohaimi
- Department of Chemistry, College of Science, Jouf University, Sakaka P.O. Box 2014, Al-Jouf, Saudi Arabia;
| | - Rizwan Ahmed Malik
- Department of Metallurgy & Materials Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology, Taxila 47050, Pakistan;
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Zhang J, Zeng F, Liu B, Wang Z, Lin X, Zhao H, Wang Y. A biomimetic closed-loop recyclable, long-term durable, extreme-condition resistant, flame-retardant nanocoating synthesized by reversible flocculation assembly. MATERIALS HORIZONS 2023; 10:4551-4561. [PMID: 37564015 DOI: 10.1039/d3mh00720k] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Flame-retardant coatings have attracted increasing attention in mitigating the fire threat of flammable polymer materials. Their durable application inevitably provides high resistance to various complex environments, however, discarded stable materials will turn into another man-made waste disaster. The paradigm shift toward a sustainable future is to combine durability and recyclability of coatings. Herein, we demonstrate a biomimetic coating that reversibly captures active flame-retardant nanomaterials by flocculation assembly using anionic polyacrylamide covering the polyurethane foam surface. Strong hydrogen bonding and microstructural interlocking provide the coating with high durability under complex harsh conditions (underwater, chemical exposure, hydrothermal aging, long-term external extrusion, etc.). Meanwhile, the disassembly/reorganization of the coating can be easily repeated in response to pH stimulation with a recycling rate of 97%. The experiments and theoretical calculations reveal the mechanism of the reversible flocculation assembly. This biomimetic strategy of responsive flocculation assembly opens the way for functional coatings with integrated durability and recyclability.
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Affiliation(s)
- Jiayan Zhang
- The Collaborative Innovation Center for Eco-Friendly and Fire-safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Sichuan 610064, China.
| | - Furong Zeng
- The Collaborative Innovation Center for Eco-Friendly and Fire-safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Sichuan 610064, China.
| | - Bowen Liu
- The Collaborative Innovation Center for Eco-Friendly and Fire-safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Sichuan 610064, China.
| | - Zihao Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Sichuan 610064, China.
| | - Xincen Lin
- The Collaborative Innovation Center for Eco-Friendly and Fire-safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Sichuan 610064, China.
| | - Haibo Zhao
- The Collaborative Innovation Center for Eco-Friendly and Fire-safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Sichuan 610064, China.
| | - Yuzhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Sichuan 610064, China.
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Yang R, Zhang X, Chen B, Yan Q, Yin J, Luan S. Tunable backbone-degradable robust tissue adhesives via in situ radical ring-opening polymerization. Nat Commun 2023; 14:6063. [PMID: 37770451 PMCID: PMC10539349 DOI: 10.1038/s41467-023-41610-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 09/12/2023] [Indexed: 09/30/2023] Open
Abstract
Adhesives with both robust adhesion and tunable degradability are clinically and ecologically vital, but their fabrication remains a formidable challenge. Here we propose an in situ radical ring-opening polymerization (rROP) strategy to design a backbone-degradable robust adhesive (BDRA) in physiological environment. The hydrophobic cyclic ketene acetal and hydrophilic acrylate monomer mixture of the BDRA precursor allows it to effectively wet and penetrate substrates, subsequently forming a deep covalently interpenetrating network with a degradable backbone via redox-initiated in situ rROP. The resulting BDRAs show good adhesion strength on diverse materials and tissues (e.g., wet bone >16 MPa, and porcine skin >150 kPa), higher than that of commercial cyanoacrylate superglue (~4 MPa and 56 kPa). Moreover, the BDRAs have enhanced tunable degradability, mechanical modulus (100 kPa-10 GPa) and setting time (seconds-hours), and have good biocompatibility in vitro and in vivo. This family of BDRAs expands the scope of medical adhesive applications and offers an easy and environmentally friendly approach for engineering.
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Affiliation(s)
- Ran Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Xu Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Binggang Chen
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Qiuyan Yan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Jinghua Yin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Shifang Luan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China.
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Qian X, Mu N, Zhao X, Shi C, Jiang S, Wan M, Yu B. Novel self-healing and recyclable fire-retardant polyvinyl alcohol/borax hydrogel coatings for the fire safety of rigid polyurethane foam. SOFT MATTER 2023; 19:6097-6107. [PMID: 37526969 DOI: 10.1039/d3sm00709j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Rigid polyurethane foam (RPUF) has attracted great attention as an insulation material, but its inherent flammability restricts its practical application. Developing a sustainable fire-retardant strategy that can improve its fire safety is particularly desirable and challenging. Herein, novel fire-retardant hydrogel coatings based on polyvinyl alcohol (PVA) and borax are proposed and applied in RPUF, and the self-healing, recyclability and flame retardant properties of the coatings are investigated. The dynamic and reversible cross-linked networks based on the borate ester bonds and hydrogen bonds endow the hydrogels with excellent repairability, recyclability, and elasticity. Compared with a neat RUPF, the coated RPUF exhibited improved fire-retardant properties without the inherent advantages being influenced and can be reflected by the 8% increase in the limiting oxygen index (LOI), 20% reduction in total heat release (THR), and 25% decrease in total smoke production (TSP) with the coatings, along with a rapid self-quenching behavior. The novel hydrogel coatings provide a new strategy for the development of flame-retardant coatings, demonstrating the potential of the next generation of self-healing hydrogel coatings to reduce the fire risk of the RPUF.
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Affiliation(s)
- Xiaodong Qian
- Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing 100012, China.
| | - Nire Mu
- Institute of Safety Science and Engineering, School of Mechanicaland Automotive Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510641, China.
| | - Xiaojiong Zhao
- Institute of Safety Science and Engineering, School of Mechanicaland Automotive Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510641, China.
| | - Congling Shi
- Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing 100012, China.
| | - Saihua Jiang
- Institute of Safety Science and Engineering, School of Mechanicaland Automotive Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510641, China.
| | - Mei Wan
- Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety, China Academy of Safety Science and Technology, Beijing 100012, China.
| | - Bin Yu
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China
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Li F, Gu W, Gao Q, Tan Y, Li C, Sonne C, Li J, Kim KH. Scalable Underwater Adhesives with High-Strength, Long-Term, and Harsh-Environment Adhesion Enabled by Heterocyclic Chemistry. ACS APPLIED MATERIALS & INTERFACES 2023; 15:37925-37935. [PMID: 37493476 DOI: 10.1021/acsami.3c07112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Developing scalable and high-performance underwater adhesives is important in various biomedical and industrial applications. However, despite massive efforts, the realization of such adhesives remains a challenging task, as mainly imposed by the difficulty in balancing the interfacial and bulk properties via an efficient way. Here, we report a facile yet effective strategy to construct a novel underwater adhesive with multiple advantaged performances by virtue of heterocyclic chemistry. This adhesive is designed with the cooperation of a heterocycle-based versatile adhesive functionality and an eco-friendly hydrophilic matrix with cross-linkable sites, which allows water absorption to destroy hydration layer, diverse molecular interactions to enhance interfacial adhesion, and abundant covalent crosslinks to strengthen bulk cohesion. Such a rational design endows the adhesive with strong underwater adhesion (up to 1.16 MPa for wood and 0.36 MPa for poly(tetrafluoroethylene) (PTFE)), long-term durability (maintaining pristine strength even after 4 months), and harsh-environment stability (salt, acidic/alkaline, low/high-temperature solutions). This strategy is also generic to derive more adhesive formulas, which offers a new direction for designing the next-generation underwater adhesives with high performance and scalability for practical applications.
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Affiliation(s)
- Feng Li
- MOE Key Laboratory of Wood Material Science and Application, Beijing Forestry University, Beijing 100083, China
| | - Weidong Gu
- State Key Laboratory of Bio-Fibers and Eco-Textiles College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Qiang Gao
- MOE Key Laboratory of Wood Material Science and Application, Beijing Forestry University, Beijing 100083, China
| | - Yi Tan
- MOE Key Laboratory of Wood Material Science and Application, Beijing Forestry University, Beijing 100083, China
| | - Cheng Li
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Christian Sonne
- Department of Bioscience, Arctic Research Centre (ARC), Aarhus University, Faculty of Science and Technology, Frederiksborgvej 399, P.O. Box 358, DK-4000 Roskilde, Denmark
| | - Jianzhang Li
- MOE Key Laboratory of Wood Material Science and Application, Beijing Forestry University, Beijing 100083, China
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Korea
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Yang L, Li L, Lu J, Lin B, Fu L, Xu C. Flexible Photothermal Materials with Controllable Accurate Healing and Reversible Adhesive Abilities. Macromolecules 2023. [DOI: 10.1021/acs.macromol.3c00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Li Yang
- Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxuedong Road, Xixiangtang District, Nanning 530004, China
| | - Luji Li
- Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxuedong Road, Xixiangtang District, Nanning 530004, China
| | - Junjie Lu
- Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxuedong Road, Xixiangtang District, Nanning 530004, China
| | - Baofeng Lin
- Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxuedong Road, Xixiangtang District, Nanning 530004, China
| | - Lihua Fu
- Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxuedong Road, Xixiangtang District, Nanning 530004, China
| | - Chuanhui Xu
- Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, No. 100, Daxuedong Road, Xixiangtang District, Nanning 530004, China
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37
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Lu Y, Xu X, Li J. Recent advances in adhesive materials used in the biomedical field: adhesive properties, mechanism, and applications. J Mater Chem B 2023; 11:3338-3355. [PMID: 36987937 DOI: 10.1039/d3tb00251a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Adhesive materials are natural or synthetic polymers with the ability to adhere to the surface of luminal mucus or epithelial cells. They are widely used in the biomedical field due to their unique adhesion, biocompatibility, and excellent surface properties. When used in the human body, they can adhere to an accessible target and remain at the focal site for a longer period, improving the therapeutic effect on local disease. An adhesive material with bacteriostatic properties can play an antibacterial role at the focal site and the adhesive properties of the material can prevent the focal site from being infected by bacteria for a period. In addition, some adhesive materials can promote cell growth and tissue repair. In this review, the properties and mechanism of natural adhesive materials, organic adhesive materials, composite adhesive materials, and underwater adhesive materials have been introduced systematically. The applications of these adhesive materials in drug delivery, antibacterials, tissue repair, and other applications are described in detail. Finally, we have discussed the prospects and challenges of using adhesive materials in the field of biomedicine.
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Affiliation(s)
- Yongping Lu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer, Sichuan University, Chengdu 610041, P. R. China.
| | - Xinyuan Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer, Sichuan University, Chengdu 610041, P. R. China.
| | - Jianshu Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer, Sichuan University, Chengdu 610041, P. R. China.
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
- Med-X Center for Materials, Sichuan University, Chengdu 610041, P. R. China
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38
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Dong YQ, Bai WB, Zhang W, Lin YC, Jian RK. Bio-based phytic acid@polyurushiol‑titanium complex coated cotton fabrics with durable flame retardancy for oil-water separation. Int J Biol Macromol 2023; 235:123782. [PMID: 36822294 DOI: 10.1016/j.ijbiomac.2023.123782] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023]
Abstract
Bio-based hydrophobic coating modified cotton fabrics with durable flame retardancy are of high interest in the application of oil-water separation for not only avoiding the use of hazardous substances but also improving the fire safety during use. Herein, phytic acid@Polyurushiol‑titanium complex coated cotton fabric was developed using the facile dip-coating method involving the sequential immersion in the solution of poly(ethyleneimine), phytic acid, titanium oxide, and urushiol. The underlying coating accommodated abundance of phytic acid, which imparted excellent flame retardancy to cotton fabric, and the top coating composed of the polyurushiol‑titanium complex endowed cotton fabric with high hydrophobicity that the water contact angle (WCA) was up to 149.8°. The hydrophobicity also guaranteed effective protection of the underlying phytic acid against chemical solvents and abrasion. Besides, the hydrophobic coating allowed cotton fabric for good self-cleaning and effective oil-water separation. Therefore, the preparation of phytic acid@polyurushiol‑titanium complex coated cotton fabric offers a promising approach to construct durable biomass-coated cellulose-based fabric with multifunctionality.
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Affiliation(s)
- Ying-Qi Dong
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Wei-Bin Bai
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Wen Zhang
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Yu-Cai Lin
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Rong-Kun Jian
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China; Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China; Fujian Provincial Key Laboratory of Advanced Oriented Chemical Engineering, Fujian Normal University, Fuzhou 350007, China.
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High-Efficient Flame-Retardant Finishing of Cotton Fabrics Based on Phytic Acid. Int J Mol Sci 2023; 24:ijms24021093. [PMID: 36674614 PMCID: PMC9865254 DOI: 10.3390/ijms24021093] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 01/09/2023] Open
Abstract
In this study, an efficient phosphorus-containing flame retardant, PAPBTCA, was synthesized from phytic acid, pentaerythritol, and 1,2,3,4-butane tetracarboxylic acid, and its structure was characterized. PAPBTCA was finished on cotton fabrics by the pad-dry-curing process, and the flame retardancy, flame-retardant durability, and wrinkle resistance of the obtained flame-retardant fabrics were investigated. It should be noted that the heat release rate value of the flame-retardant cotton fabrics treated with 200 g/L PAPBTCA decreased by 90% and its excellent flame retardancy was maintained after 5 washing cycles. Meanwhile, the wrinkle resistance of flame-retardant cotton fabrics has been significantly improved. In addition, compared with the control, the breaking force loss of PAPBTCA-200 in the warp and weft directions was 24% and 21%, respectively. This study provides a new way to utilize natural phosphorus-based flame retardants to establish multifunctional finishing for cotton fabrics.
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