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Yu X, He L, Zhang X, Bao G, Zhang R, Jin X, Qin D. Eco-friendly flame-retardant bamboo fiber/polypropylene composite based on the immobilization of halloysite nanotubes by tannic acid-Fe 3+ complex. Int J Biol Macromol 2024; 265:130894. [PMID: 38490388 DOI: 10.1016/j.ijbiomac.2024.130894] [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: 01/17/2024] [Revised: 02/22/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
Bamboo fibers (BF), as an important sustainable natural material, are becoming a hot alternative to synthetic fibers for the reinforcement of polypropylene (PP)-based composites. However, the weak interfacial compatibility between BF and PP as matrix and their inherent flammability limit the practical application of BF/PP composites (BPC). Here, a fire-safe BPC was fabricated by constructing flame-retardant interfacial layers containing tannic acid (TA)-Fe3+ complex and halloysite nanotubes (HNTs) on the fiber matrix followed by a hot-pressing process. The results showed that the interfacial chelating of TA with Fe3+ improved the dispersion of HNTs on the fibers and the interfacial interactions within the fiber matrix, resulting in the as-fabricated composite with significantly improved mechanical properties and water resistance. In addition, the flame-retardant composite exhibited higher thermal stability and enhanced residual char content. Moreover, the composite possessed significant flame-retardant performances with a reduction of 23.75 % in the total heat release and 32.44 % in the total smoke production, respectively, owing to the flame retarding in gaseous phase and condensed phase of TA-Fe3+@HNTs layers. This work offers a green and eco-friendly strategy to address the inherent problems of BPC material in terms of fire safety and interfacial compatibility, thus broadening their applications in the automotive interior and construction industries.
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Affiliation(s)
- Xi Yu
- Institute of New Bamboo and Rattan Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; Key Laboratory of National Forestry and Grassland Administration / Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Lu He
- Institute of New Bamboo and Rattan Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; Key Laboratory of National Forestry and Grassland Administration / Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Xiaofeng Zhang
- Institute of New Bamboo and Rattan Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; Key Laboratory of National Forestry and Grassland Administration / Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Gege Bao
- Institute of New Bamboo and Rattan Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; Key Laboratory of National Forestry and Grassland Administration / Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Rong Zhang
- Institute of New Bamboo and Rattan Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; Key Laboratory of National Forestry and Grassland Administration / Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Xiaobei Jin
- Institute of New Bamboo and Rattan Biomaterials, International Centre for Bamboo and Rattan, Beijing 100102, China; Key Laboratory of National Forestry and Grassland Administration / Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China.
| | - Daochun Qin
- Sanya Research Base, International Centre for Bamboo and Rattan, Sanya 572022, China
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Zhang Z, Kong Y, Gao J, Han X, Lian Z, Liu J, Wang WJ, Yang X. Engineering strong man-made cellulosic fibers: a review of the wet spinning process based on cellulose nanofibrils. NANOSCALE 2024. [PMID: 38465763 DOI: 10.1039/d3nr06126d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
With the goal of sustainable development, manufacturing continuous high-performance fibers based on sustainable resources is an emerging research direction. However, compared to traditional synthetic fibers, plant fibers have limited length/diameter and uncontrollable natural defects, while regenerated cellulose fibers such as viscose and Lyocell suffer from inferior mechanical properties. Wet-spun fibers based on nanocelluloses especially cellulose nanofibrils (CNFs) offer superior mechanical performance since CNFs are the fundamental high-performance building blocks of plant cell walls. This review aims to summarize the progress of making CNF wet-spun fibers, emphasizing on the whole wet spinning process including spinning suspension preparation, spinning, coagulation, washing, drying and post-stretching steps. By establishing the relationships between the nano-scale assembling structure and the macroscopic changes in the CNF dope from gels to dried fibers, effective methods and strategies to improve the mechanical properties of the final fibers are analyzed and proposed. Based on this, the opportunities and challenges for potential industrial-scale production are discussed.
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Affiliation(s)
- Zihuan Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
- Institute of Zhejiang University-Quzhou, Quzhou, 324000, P.R. China
| | - Yuying Kong
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
- Institute of Zhejiang University-Quzhou, Quzhou, 324000, P.R. China
| | - Junqi Gao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
- Institute of Zhejiang University-Quzhou, Quzhou, 324000, P.R. China
| | - Xiao Han
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
- Institute of Zhejiang University-Quzhou, Quzhou, 324000, P.R. China
| | - Zechun Lian
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
| | - Jiamin Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
| | - Wen-Jun Wang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
- Institute of Zhejiang University-Quzhou, Quzhou, 324000, P.R. China
| | - Xuan Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China.
- Institute of Zhejiang University-Quzhou, Quzhou, 324000, P.R. China
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Chen X, Ma J, Sun X, Zhao C, Li J, Li H. SiC and N, S-doped carbon nanosheets and lignin-enhanced organohydrogel for low-temperature tolerant solid-state supercapacitors. Int J Biol Macromol 2024; 258:128759. [PMID: 38103667 DOI: 10.1016/j.ijbiomac.2023.128759] [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: 10/26/2023] [Revised: 11/25/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
The rational design of porous carbon materials and hydrogel electrolytes with excellent mechanical properties and low-temperature tolerance are significance for the development of flexible solid-state supercapacitors. In this study, we introduce a novel methodology for synthesizing SiC/N, S-doped porous carbon nanosheets from bamboo pulp red liquor (RL). We leverage the SiO2 and the sodium salt in RL as templates and sodium lignosulfonate as sulfur dopants for the pyrolysis process and use NH4Cl as a nitrogen dopant. This innovative approach results in a material with a remarkable specific surface area of 1659.19 m2 g-1, a specific capacitance of 308 F g-1 at a current density of 1 A g-1 and excellent stability. Additionally, we harness alkali lignin extracted from RL to enhance a poly (vinyl alcohol) (PVA) matrix, creating a gel electrolyte with low-temperature tolerance and outstanding mechanical properties. A flexible solid-state supercapacitor, which incorporates our electrodes and gel electrolyte, demonstrates high energy density (5.2 W h kg-1 at 251 W kg-1 power density). Impressively, it maintains 82 % of its capacitance over 10,000 cycles of charge and discharge. This provides a new solution for the development of flexible solid-state supercapacitors.
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Affiliation(s)
- Xiangyu Chen
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Jiahua Ma
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Xiaoshuai Sun
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Chuanshan Zhao
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China.
| | - Jiehua Li
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Hui Li
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
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Long H, Gu J, Jiang J, Guan L, Lin X, Zhang W, Hu C. Mechanically strong and biodegradable holocellulose films prepared from Camellia oleifera shells. Carbohydr Polym 2023; 299:120189. [PMID: 36876804 DOI: 10.1016/j.carbpol.2022.120189] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/29/2022] [Accepted: 10/01/2022] [Indexed: 11/09/2022]
Abstract
Bioplastic derived from renewable lignocellulosic biomass is an attractive alternative to petroleum-based plastics. Herein, Callmellia oleifera shells (COS), a unique byproduct from tea oil industry, were delignified and converted into high-performance bio-based films via a green citric acid treatment (15 %, 100 °C and 24 h), taking advantage of their high hemicellulose content. The structure-property relations of COS holocellulose (COSH) films were systematically analyzed considering different treatment conditions. The surface reactivity of COSH was improved via a partial hydrolysis route and strong hydrogen bonding formed between the holocellulose micro/nanofibrils. COSH films exhibited high mechanical strength, high optical transmittance, improved thermal stability, and biodegradability. A mechanical blending pretreatment of COSH, which disintegrated the COSH fibers before the citric acid reaction, further enhanced the tensile strength and Young's modulus of the films up to 123.48 and 5265.41 MPa, respectively. The films decomposed completely in soil, demonstrating an excellent balance between degradability and durability.
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Affiliation(s)
- Haibo Long
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China
| | - Jin Gu
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
| | - Jianchun Jiang
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry Sciences, Nanjing 210042, PR China.
| | - Litao Guan
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
| | - Xiuyi Lin
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China
| | - Weiwei Zhang
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
| | - Chuanshuang Hu
- College of Materials and Energy, South China Agricultural University, Guangzhou 510642, PR China.
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Wang J, Wu X, Wang Y, Zhao W, Zhao Y, Zhou M, Wu Y, Ji G. Green, Sustainable Architectural Bamboo with High Light Transmission and Excellent Electromagnetic Shielding as a Candidate for Energy-Saving Buildings. NANO-MICRO LETTERS 2022; 15:11. [PMID: 36495422 PMCID: PMC9741695 DOI: 10.1007/s40820-022-00982-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 11/09/2022] [Indexed: 06/02/2023]
Abstract
Currently, light-transmitting, energy-saving, and electromagnetic shielding materials are essential for reducing indoor energy consumption and improving the electromagnetic environment. Here, we developed a cellulose composite with excellent optical transmittance that retained the natural shape and fiber structure of bamboo. The modified whole bamboo possessed an impressive optical transmittance of approximately 60% at 6.23 mm, illuminance of 1000 luminance (lux), water absorption stability (mass change rate less than 4%), longitudinal tensile strength (46.40 MPa), and surface properties (80.2 HD). These were attributed to not only the retention of the natural circular hollow structure of the bamboo rod on the macro, but also the complete bamboo fiber skeleton template impregnated with UV resin on the micro. Moreover, a multilayered device consisting of translucent whole bamboo, transparent bamboo sheets, and electromagnetic shielding film exhibited remarkable heat insulation and heat preservation performance as well as an electromagnetic shielding performance of 46.3 dB. The impressive optical transmittance, mechanical properties, thermal performance, and electromagnetic shielding abilities combined with the renewable and sustainable nature, as well as the fast and efficient manufacturing process, make this bamboo composite material suitable for effective application in transparent, energy-saving, and electromagnetic shielding buildings.
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Affiliation(s)
- Jing Wang
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Xinyu Wu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Yajing Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China
| | - Weiying Zhao
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Yue Zhao
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, People's Republic of China
| | - Ming Zhou
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, People's Republic of China
| | - Yan Wu
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, 210037, People's Republic of China.
| | - Guangbin Ji
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211100, People's Republic of China.
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Holocellulosic fibers and nanofibrils using peracetic acid pulping and sulfamic acid esterification. Carbohydr Polym 2022; 295:119902. [DOI: 10.1016/j.carbpol.2022.119902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/03/2022] [Accepted: 07/17/2022] [Indexed: 11/18/2022]
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