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Han S, Li S, Fu X, Han S, Chen H, Zhang L, Wang J, Sun G. Research Progress of Flexible Piezoresistive Sensors Based on Polymer Porous Materials. ACS Sens 2024. [PMID: 39046083 DOI: 10.1021/acssensors.4c00836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Flexible piezoresistive sensors are in high demand in areas such as wearable devices, electronic skin, and human-machine interfaces due to their advantageous features, including low power consumption, excellent bending stability, broad testing pressure range, and simple manufacturing technology. With the advancement of intelligent technology, higher requirements for the sensitivity, accuracy, response time, measurement range, and weather resistance of piezoresistive sensors are emerging. Due to the designability of polymer porous materials and conductive phases, and with more multivariate combinations, it is possible to achieve higher sensitivity and lower detection limits, which are more promising than traditional flexible sensor materials. Based on this, this work reviews recent advancements in research on flexible pressure sensors utilizing polymer porous materials. Furthermore, this review examines sensor performance optimization and development from the perspectives of three-dimensional porous flexible substrate regulation, sensing material selection and composite technology, and substrate and sensing material structure design.
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Affiliation(s)
- Song Han
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, People's Republic of China
| | - Sheng Li
- China Academy of Machinery Wuhan Research Institute of Materials Protection Company, Ltd., Wuhan 430030, People's Republic of China
| | - Xin Fu
- Wuhan Second Ship Design & Research Institute, Wuhan 430064, People's Republic of China
| | - Shihui Han
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, People's Republic of China
| | - Huanyu Chen
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, People's Republic of China
| | - Liu Zhang
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, People's Republic of China
| | - Jun Wang
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, People's Republic of China
| | - Gaohui Sun
- College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, People's Republic of China
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2
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Kheradmandkeysomi M, Salehi A, Jalali A, Omranpour H, Tafreshi OA, Naguib HE, Park CB. Enhancing Mechanical Performance of High-Density Polyethylene at Different Environmental Conditions with Outstanding Foamability through In-Situ Rubber Nanofibrillation: Exploring the Impact of Interface Modification. ACS APPLIED MATERIALS & INTERFACES 2024; 16:29291-29304. [PMID: 38776211 DOI: 10.1021/acsami.4c05589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
In this study, we utilized in situ nanofibrillation of thermoplastic polyester ether elastomer (TPEE) within a high-density polyethylene (HDPE) matrix to enhance the rheological properties, foamability, and mechanical characteristics of the HDPE nanocomposite at both room and subzero temperatures. Due to the inherent polarity differences between these two components, TPEE is thermodynamically incompatible with the nonpolar HDPE. To address this compatibility issue, we employed a compatibilizer, styrene/ethylene-butylene/styrene copolymer-grafted maleic anhydride (SEBS-g-MA), to reduce the interfacial tension between the two blend components. In the initial step, we prepared a 10% masterbatch of HDPE/TPEE with and without the compatibilizer using a twin-screw extruder. Subsequently, we processed the 10% masterbatch further through spun bonding to create fiber-in-fiber composites. Scanning electron microscopy (SEM) analysis revealed a significant reduction in the spherical size of HDPE/TPEE particles following the inclusion of SEBS-g-MA, as well as a much smaller TPEE nanofiber size (approximately 60-70 nm for 5% TPEE). Moreover, extensional rheological testing revealed a notable enhancement in extensional rheological properties, with strain-hardening behavior being more pronounced in the compatibilized nanofibrillar composites compared to the noncompatibilized ones. SEM images of the foam structures depicted substantial improvement in the foamability of HDPE in terms of the cell size and density following the nanofibrillation process and the use of the compatibilizer. Ultimately, the in situ rubber fibrillation and enhancement of HDPE and TPEE interface using a compatibilizer led to increasing the HDPE ductility at room and subzero temperatures while maintaining its stiffness.
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Affiliation(s)
- Mohamad Kheradmandkeysomi
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Amirmehdi Salehi
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Amirjalal Jalali
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Hosseinali Omranpour
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Omid Aghababaei Tafreshi
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Hani E Naguib
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Chul B Park
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
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3
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Iqbal S, Kamiński M. Review Study on Mechanical Properties of Cellular Materials. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2682. [PMID: 38893947 PMCID: PMC11173958 DOI: 10.3390/ma17112682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 05/19/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024]
Abstract
Cellular materials are fundamental elements in civil engineering, known for their porous nature and lightweight composition. However, the complexity of its microstructure and the mechanisms that control its behavior presents ongoing challenges. This comprehensive review aims to confront these uncertainties head-on, delving into the multifaceted field of cellular materials. It highlights the key role played by numerical and mathematical analysis in revealing the mysterious elasticity of these structures. Furthermore, the review covers a range of topics, from the simulation of manufacturing processes to the complex relationships between microstructure and mechanical properties. This review provides a panoramic view of the field by traversing various numerical and mathematical analysis methods. Furthermore, it reveals cutting-edge theoretical frameworks that promise to redefine our understanding of cellular solids. By providing these contemporary insights, this study not only points the way for future research but also illuminates pathways to practical applications in civil and materials engineering.
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Affiliation(s)
| | - Marcin Kamiński
- Department of Structural Mechanics, Faculty of Civil Engineering, Architecture and Environmental Engineering, Lodz University of Technology, 93-590 Lodz, Poland;
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Wang Y, Guo F, Liao X, Li S, Yan Z, Zou F, Peng Q, Li G. High-expansion-ratio PLLA/PDLA/HNT composite foams with good thermally insulating property and enhanced compression performance via supercritical CO 2. Int J Biol Macromol 2023; 236:123961. [PMID: 36898452 DOI: 10.1016/j.ijbiomac.2023.123961] [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: 12/25/2022] [Revised: 02/22/2023] [Accepted: 03/04/2023] [Indexed: 03/11/2023]
Abstract
It has been a great challenge to prepare high-expansion-ratio polylactide (PLA) foam with eminent thermal insulation and compression performance in packaging field. Herein, a naturally formed nanofiller halloysite nanotube (HNT) and stereocomplex (SC) crystallites were introduced into PLA with a supercritical CO2 foaming method to improve foaming behavior and physical properties. The compressive performance and thermal insulation properties of the obtained poly(L-lactic acid) (PLLA)/poly(D-lactic acid) (PDLA)/HNT composite foams were successfully investigated. At a HNT content of 1 wt%, the PLLA/PDLA/HNT blend foam with an expansion ratio of 36.7 folds showed a thermal conductivity as low as 30.60 mW/(m·K). Meanwhile, the compressive modulus of PLLA/PDLA/HNT foam was 115% higher than that of PLLA/PDLA foam without HNT. Moreover, the crystallinity of PLLA/PDLA/HNT foam was dramatically improved after annealing, thus the results showed that compressive modulus of the annealed foam increased by as high as 72%, while it still maintained good heat insulation with the thermal conductivity of 32.63 mW/(m·K). This work provides a green method for the preparation of biodegradable PLA foams with admirable heat resistance and mechanical performance.
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Affiliation(s)
- Yao Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Fumin Guo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Xia Liao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China.
| | - Shaojie Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Zhihui Yan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Fangfang Zou
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Qianyun Peng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
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5
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Qian Z, Cai H, Wang P, Li L, Zhou X, Cao Y, Zhang Y, Niu B, Long D. Co-Optimizing Insulative and Mechanical Properties of Quartz Fabric Reinforced Phenolic Composites by a Compromising Porous Structure for Thermal Insulation. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- Zhen Qian
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hongxiang Cai
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Peng Wang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Liang Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoyi Zhou
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yu Cao
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yayun Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bo Niu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Donghui Long
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- Key Laboratory for Specially Functional Materials and Related Technology, East China University of Science and Technology, Shanghai 200237, China
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Ren Q, Li W, Cui S, Ma W, Zhu X, Wu M, Wang L, Zheng W, Semba T, Ohshima M. Improved thermal insulation and compressive property of bimodal poly (lactic acid)/cellulose nanocomposite foams. Carbohydr Polym 2023; 302:120419. [PMID: 36604081 DOI: 10.1016/j.carbpol.2022.120419] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022]
Abstract
In this work, an innovative PLA/CNF nanocomposite foam with a bimodal cell structure is prepared by a simple one-step depressurization foaming process using only supercritical carbon dioxide (ScCO2) as the foaming agent. Only at a specific foaming temperature, PLA/CNF nanocomposites foam with a bimodal cell structure could be obtained. According to the different crystallization kinetics and nucleation efficiency of samples, it was inferred that the crystallization rate and phase interface would affect the cell structure. The prepared PLA/CNF nanocomposite foam with a bimodal cell structure had an expansion ratio as high as 20 times and thermal conductivity of 0.041 w m-1 k-1, which exhibited low density and excellent thermal-insulation property. Meanwhile, the PLA/CNF nanocomposite foam exhibited excellent compression performance due to the presence of CNFs, which showed promising application in packaging and construction materials.
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Affiliation(s)
- Qian Ren
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wanwan Li
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang Province 315211, China
| | - Shijie Cui
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang Province 315211, China
| | - Wenyu Ma
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiuyu Zhu
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang Province 315211, China
| | - Minghui Wu
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; Advanced Materials and Composites Department, University of Nottingham Ningbo China, 199 Taikang East Road, Ningbo 315000, China
| | - Long Wang
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Wenge Zheng
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Takeshi Semba
- Polymer Materials Laboratory, Kyoto Municipal Institute of Industrial Technology and Culture, 91 Chudoji Awata-cho, Shimogyo-ku, Kyoto, Japan
| | - Masahiro Ohshima
- Department of Chemical Engineering, Kyoto University, Katsura, Kyoto 6158510, Japan
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7
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Lin W, Ohshima M. Stretching-induced foaming of gas-laden thermoplastic elastomers. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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8
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Mirzaei A, Javanshir S, Servati P. Thermal insulation properties of lightweight, self-healing, and mesoporous carrageenan/PMMA cryogels. RSC Adv 2023; 13:1094-1105. [PMID: 36686950 PMCID: PMC9811499 DOI: 10.1039/d2ra06333f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 12/22/2022] [Indexed: 01/06/2023] Open
Abstract
The development of new bio-based cryogel materials with low environmental impact and various properties such as self-healing, flame-retardancy, low thermal conductivity has emerged as a cutting-edge research topic in special-purpose materials and a significant challenge. Herein, we report a simple processing methodology for preparing new mesoporous light weight thermal insulation biomass hybrid cryogels based on natural and biocompatible polymers, including marine glycosaminoglycan carrageenan moss (CM) and polymethyl methacrylate (PMMA) abbreviated as CM/PMMA under cryo conditions. The mechanical, thermal, and physicochemical characterization of the obtained hybrid cryogel was studied. The effect of increasing thickness on thermal conductivity and compressive strength was investigated. The results show that the thermal conductivity increases from 0.068 W m-1 K-1 to 0.124 W m-1 K-1 with increasing thickness. Also, the compressive strength changed from 89.5% MPa to 95.4% MPa. The results revealed that cryogel has a wrinkled surface and interconnected pores and exhibits high flexibility, self-healing ability, flame retardancy, and low thermal conductivity.
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Affiliation(s)
- Akbar Mirzaei
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Chemistry Department, Iran University of Science and Technology Tehran Iran
| | - Shahrzad Javanshir
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Chemistry Department, Iran University of Science and Technology Tehran Iran
| | - Peyman Servati
- Department of Electrical and Computer Engineering, University of British Columbia Vancouver BC V6T 1Z4 Canada +98-21-77240516
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9
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Production and Application of Polymer Foams Employing Supercritical Carbon Dioxide. ADVANCES IN POLYMER TECHNOLOGY 2022. [DOI: 10.1155/2022/8905115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Polymeric foams have characteristics that make them attractive for different applications. However, some foaming methods rely on chemicals that are not environmentally friendly. One of the possibilities to tackle the environmental issue is to utilize supercritical carbon dioxide ScCO2 since it is a “green” solvent, thus facilitating a sustainable method of producing foams. ScCO2 is nontoxic, chemically inert, and soluble in molten plastic. It can act as a plasticizer, decreasing the viscosity of polymers according to temperature and pressure. Most foam processes can benefit from ScCO2 since the methods rely on nucleation, growth, and expansion mechanisms. Process considerations such as pretreatment, temperature, pressure, pressure drop, and diffusion time are relevant parameters for foaming. Other variables such as additives, fillers, and chain extenders also play a role in the foaming process. This review highlights the morphology, performance, and features of the foam produced with ScCO2, considering relevant aspects of replacing or introducing a novel foam. Recent findings related to foaming assisted by ScCO2 and how processing parameters influence the foam product are addressed. In addition, we discuss possible applications where foams have significant benefits. This review shows the recent progress and possibilities of ScCO2 in processing polymer foams.
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Corrugated thermoplastic polyurethane foams with high mechanical strength fabricated by integrating fused filament fabrication and microcellular foaming using supercritical CO2. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Chen Y, Duan Y, Zhao H, Liu K, Liu Y, Wu M, Lu P. Preparation of Bio-Based Foams with a Uniform Pore Structure by Nanocellulose/Nisin/Waterborne-Polyurethane-Stabilized Pickering Emulsion. Polymers (Basel) 2022; 14:polym14235159. [PMID: 36501553 PMCID: PMC9738286 DOI: 10.3390/polym14235159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022] Open
Abstract
Bio-based porous materials can reduce energy consumption and environmental impact, and they have a possible application as packaging materials. In this study, a bio-based porous foam was prepared by using a Pickering emulsion as a template. Nisin and waterborne polyurethane (WPU) were used for physical modification of 2,2,6,6-tetramethyl piperidine-1-oxyl-oxidized cellulose nanocrystals (TOCNC). The obtained composite particles were applied as stabilizers for acrylated epoxidized soybean oil (AESO) Pickering emulsion. The stability of the emulsion was characterized by determination of the rheological properties and microscopic morphology of the emulsion. The emulsion stabilized by composite particles showed better stability compared to case when TOCNC were used. The porous foam was obtained by heating a composite-particles-stabilized Pickering emulsion at 90 °C for 2 h. SEM (scanning electron microscopy) images showed that the prepared foam had uniformly distributed pores. In addition, the thermal conductivity of the foam was 0.33 W/m·k, which was a significant decrease compared to the 3.92 W/m·k of the TOCNC foam. The introduction of nisin and WPU can reduce the thermal conductivity of the foam, and the physically modified, TOCNC-stabilized Pickering emulsion provides an effective means to preparing bio-based porous materials.
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Li J, Zhang M, Ni G, Mi H, Dong B, Liu C, Shen C. A dynamic supercritical carbon dioxide foaming method for fabricating wrinkled surface to enhance triboelectric nanogenerator performance. J Appl Polym Sci 2022. [DOI: 10.1002/app.53351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jun Li
- National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Miaomiao Zhang
- National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Gaolei Ni
- National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Hao‐Yang Mi
- National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - BinBin Dong
- National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Chuntai Liu
- National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Changyu Shen
- National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
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Zhou M, Li M, Jiang J, Li Y, Liu H, Chen B, Zhao D, Zhai W. Porous polyetherimide fiber fabricated by a facile micro-extrusion foaming for high temperature thermal insulation. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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TRANSFORMATION OF TPU ELASTOMERS INTO TPU FOAMS USING SUPERCRITICAL CO2. A NEW REPROCESSING APPROACH. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Research on the cyclic compression performance of polycarbonate-based thermoplastic polyurethane foams prepared by microcellular foaming. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Ultralight and hydrophobic PVDF/PMMA open-cell foams with outstanding heat-insulation and oil-adsorption performances fabricated by CO2 molten foaming. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102108] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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17
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Wang G, Liu J, Zhao J, Li S, Zhao G, Park CB. Structure-gradient thermoplastic polyurethane foams with enhanced resilience derived by microcellular foaming. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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18
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Lee JH, Chu RK, Li R, Kwan K, Park CB. Utilization of CO2 as a physical blowing agent for foaming of high temperature sulfone polymers. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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19
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Wang X, Wang Y, Wang X. Fabrication strategy for long‐chain branched polypropylene foams with high resilience and compressive strength. J Appl Polym Sci 2022. [DOI: 10.1002/app.53016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaoli Wang
- College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing People's Republic of China
| | - Yaqiao Wang
- College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing People's Republic of China
| | - Xiangdong Wang
- College of Chemistry and Materials Engineering Beijing Technology and Business University Beijing People's Republic of China
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Xu Z, Wang G, Zhao J, Zhang A, Dong G, Zhao G. Anti-shrinkage, high-elastic, and strong thermoplastic polyester elastomer foams fabricated by microcellular foaming with CO2 & N2 as blowing agents. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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21
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Morita H, Yoda S, Ono T, Tazumi K, Furuya T. Analysis of nanocellular foaming with nucleating agents based on coarse-grained molecular dynamics simulations. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Zhao J, Wei C, Wang G, Li S, Zhang A, Dong G, Zhao G. Miscible polymethyl methacrylate/polylactide blend with enhanced foaming behavior and foam mechanical properties. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Rattanakawin P, Yoshimoto K, Hikima Y, Nagamine S, Jiang Y, Tosaka M, Yamago S, Ohshima M. Control of the Cell Structure of UV-Induced Chemically Blown Nanocellular Foams by Self-Assembled Block Copolymer Morphology. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Kenji Yoshimoto
- Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Yuta Hikima
- Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Shinsuke Nagamine
- Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Yuhan Jiang
- Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
| | - Masatoshi Tosaka
- Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
| | - Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
| | - Masahiro Ohshima
- Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan
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24
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Ultra-light, super-insulating, and strong polystyrene/carbon nanofiber nanocomposite foams fabricated by microcellular foaming. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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25
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Zhu X, Li X, Mi H, Jing X, Dong B, He P, Liu C, Shen C. Graphene oxide/thermoplastic polyurethane wrinkled foams with enhanced compression performance fabricated by dynamic supercritical
CO
2
foaming. J Appl Polym Sci 2022. [DOI: 10.1002/app.52485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiaoshuai Zhu
- Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Xijue Li
- Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Hao‐Yang Mi
- Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province Hunan University of Technology Zhuzhou China
| | - Xin Jing
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province Hunan University of Technology Zhuzhou China
| | - Binbin Dong
- Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Ping He
- College of Engineering Huazhong Agricultural University Wuhan Hubei China
| | - Chuntai Liu
- Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
| | - Changyu Shen
- Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou China
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26
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Wei X, Luo J, Wang X, Zhou H, Pang Y. ScCO 2-assisted fabrication and compressive property of poly (lactic acid) foam reinforced by in-situ polytetrafluoroethylene fibrils. Int J Biol Macromol 2022; 209:2050-2060. [PMID: 35490769 DOI: 10.1016/j.ijbiomac.2022.04.186] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/14/2022] [Accepted: 04/25/2022] [Indexed: 01/17/2023]
Abstract
As an effective alternative for petrochemical-based polymers, bio-based poly (lactic acid) (PLA) foam has been anticipated to alleviate enormous environmental pollution caused by microplastics. However, some difficulties involved in PLA foaming process due to the inherently poor melt strength and crystallization properties. In this context, a small amount of polytetrafluoroethylene (PTFE) was incorporated into PLA matrix to solve the aforementioned issues. Scanning electron microscopy measurement exhibited that PTFE fibrils and their physical networks were formed in molten PLA after blending. Due to these PTFE networks, approximately 2 orders of magnitudes increment in the storage modulus and more than 20% improvement in crystallinity of PLA were obtained. Diverse PLA samples were successfully foamed by a cost-effective, green and supercritical CO2-assisted foaming method. The PLA/PTFE foam with the PTFE content of 5 wt% (PLA/PTFE5) possessed the smallest pore size (9.51 μm) and the highest pore density (2.60 × 108 pores/cm3). In addition, the average specific compressive strength of PLA/PTFE5 foam was enhanced 30% in comparison with that of pure PLA foam. Overall, this study could provide a prospective strategy for developing bioderived and biodegradable polymer foams with controllable pore structures and high compression property.
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Affiliation(s)
- Xinyi Wei
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, People's Republic of China
| | - Jingyun Luo
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, People's Republic of China
| | - Xiangdong Wang
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, People's Republic of China
| | - Hongfu Zhou
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, People's Republic of China.
| | - Yongyan Pang
- Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, People's Republic of China.
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27
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Hu J, Gu R, Mi HY, Jing X, Antwi-Afari MF, Dong B, Liu C, Shen C. Self-Reinforced Thermoplastic Polyurethane Wrinkled Foams with High Energy Absorption Realized by Gas Cooling Assisted Supercritical CO 2 Foaming. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jiashun Hu
- National Engineering Research Center for Advanced Polymer Processing Technology, The Key Laboratory of Advanced Materials Processing & Mold of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Ruixing Gu
- National Engineering Research Center for Advanced Polymer Processing Technology, The Key Laboratory of Advanced Materials Processing & Mold of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Hao-Yang Mi
- National Engineering Research Center for Advanced Polymer Processing Technology, The Key Laboratory of Advanced Materials Processing & Mold of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China
| | - Xin Jing
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou, 412007, China
| | | | - Binbin Dong
- National Engineering Research Center for Advanced Polymer Processing Technology, The Key Laboratory of Advanced Materials Processing & Mold of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Chuntai Liu
- National Engineering Research Center for Advanced Polymer Processing Technology, The Key Laboratory of Advanced Materials Processing & Mold of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
| | - Changyu Shen
- National Engineering Research Center for Advanced Polymer Processing Technology, The Key Laboratory of Advanced Materials Processing & Mold of Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China
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28
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Monolithic carbon aerogels within foam framework for high-temperature thermal insulation and organics absorption. J Colloid Interface Sci 2022; 618:259-269. [PMID: 35339962 DOI: 10.1016/j.jcis.2022.03.087] [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: 03/01/2022] [Revised: 03/15/2022] [Accepted: 03/20/2022] [Indexed: 11/24/2022]
Abstract
Carbon aerogels exhibit high porosity, good electrical conductivity, and low thermal conductivity, but their practical applications are greatly hindered by their tedious preparation and inherent structure brittleness. Herein, monolithic carbon aerogels (MCAs) with low density and large size are prepared via a facile sol-gel polymerization of phenolic resin within melamine foam (MF), followed by ambient pressure drying and co-carbonization. During ambient pressure drying process, the MF matrix can deliver supporting force to counteract against the solvent evaporation surface tension, thus inhibiting volume shrinkage and shape deformation. Upon co-carbonization process, the MF matrix and organic aerogel could pyrolyze and shrink cooperatively, which could effectively prevent the brittle fracture of monolith. Therefore, large-sized MCAs (up to 250 × 250 × 20 mm) with low densities of 0.12-0.22 g·cm-3 are obtained. The as-obtained MCAs possess high compressive strength (2.50 MPa), ultra-low thermal conductivity (0.051 W·m-1·K-1 at 25 °C and 0.111 W·m-1·K-1 at 800 °C), and high-volume organic absorption capability (77.3-88.0%, V/V). This facile and low-cost method for the fabrication of large-sized monolithic carbon aerogels with excellent properties could envision enormous potential for high-temperature thermal insulation and organics absorption.
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29
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Weng Z, Wu M, Ren Q, Li W, Zhu X, Wang L, Li H, Zheng W. Achieving low‐thermal conductivity and high β phase in
PVDF
/
PMMA
blend foams via low‐pressure microcellular foaming. J Appl Polym Sci 2022. [DOI: 10.1002/app.52338] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Zhengsheng Weng
- Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and Technology Ganzhou China
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
| | - Minghui Wu
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- Advanced Materials and Composites Department University of Nottingham Ningbo China Ningbo China
| | - Qian Ren
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing China
| | - Wanwan Li
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Materials Science and Chemical Engineering Ningbo University Ningbo Zhejiang China
| | - Xiuyu Zhu
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Materials Science and Chemical Engineering Ningbo University Ningbo Zhejiang China
| | - Long Wang
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing China
| | - Hui Li
- Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and Technology Ganzhou China
| | - Wenge Zheng
- Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing China
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30
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Ultra-elastic and super-insulating biomass PEBA nanoporous foams achieved by combining in-situ fibrillation with microcellular foaming. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.101891] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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31
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Wu G, Song R, Ma Y, Xie J, Yang W, Xie P. Polypropylene‐based
in situ
fibrillation‐reinforced
ternary composite foams with improved
filler‐phase
dispersion. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25848] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Gaojian Wu
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Renda Song
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Yitao Ma
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Jinzhao Xie
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Weimin Yang
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
- State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Pengcheng Xie
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
- State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
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32
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Demewoz NM, Yeh SK. Fabrication and characterization of low-density nanocellular foam based on PMMA/TPU blends. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124493] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Wang Y, Li J, Xie Y, Hu J, Zhu X, Sun S, Jing X, Mi HY, Liu C, Shen C. Fabrication of wrinkled thermoplastic polyurethane foams by dynamic supercritical carbon dioxide foaming. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2021.105429] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Sukkaneewat B, Utara S. Ultrasonic-assisted Dunlop method for natural rubber latex foam production: Effects of irradiation time on morphology and physico-mechanical properties of the foam. ULTRASONICS SONOCHEMISTRY 2022; 82:105873. [PMID: 34915253 PMCID: PMC8683756 DOI: 10.1016/j.ultsonch.2021.105873] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/09/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
An ultrasonic-assisted technique was first introduced for the production of natural rubber latex foam (NRLF). The flexible elastomeric foam was formed by a liquid-solid state transformation in an aqueous media. The aim of the current research was to provide a novel strategy for fabricating NRLF using ultrasonication and the Dunlop method, as well as to simultaneously utilize irradiation events to achieve the desired foam properties. NRLFs were exposed to ultrasonication at 25 kHz at the beginning of the gelling process. The effects of irradiation times of 0, 1, 3, 5 and 7 min on the morphology, foaming behaviors, physical properties and mechanical performance of NRLFs were investigated. The results revealed that using ultrasonic irradiation, unfoamed regions and a bimodal structure, which seem to be microstructural defects in conventional NRLF, could be completely eliminated. However, excessive irradiation times of 5 min and longer appeared to affect the physico-mechanical properties of the foams in terms of transient cavitation and the unfavorable physicochemical effects of ultrasonic vibrations. As a result, the optimal ultrasonic irradiation time was found to be 3 min. Using this irradiation duration, a foam with the suitable microcellular structure achieved the most desirable properties, such as its expansion ratio (7-fold increase), foam porosity (85.7%), compression recoverability (98.7%), and tensile strength (307.3 kPa). Moreover, the foam still maintained its characteristic soft nature (hardness less than 100 N) with an indentation hardness of 71.9 N. Therefore, ultrasonic treatment introduced to the conventional Dunlop method is a potentially feasible technique since it improves the morphology and the physico-mechanical properties of NRLFs.
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Affiliation(s)
- Benjatham Sukkaneewat
- Functional Materials and Composites Research Group, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand; Division of Chemistry, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand
| | - Songkot Utara
- Functional Materials and Composites Research Group, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand; Division of Chemistry, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand.
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35
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Wu K, Zhou Q, Cao J, Qian Z, Niu B, Long D. Ultrahigh-strength carbon aerogels for high temperature thermal insulation. J Colloid Interface Sci 2021; 609:667-675. [PMID: 34823850 DOI: 10.1016/j.jcis.2021.11.067] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/11/2021] [Accepted: 11/13/2021] [Indexed: 12/23/2022]
Abstract
Carbon aerogels with nanoporous structure are attractive for thermal insulation under extreme conditions, but their practical applications are usually plagued by the inherent brittleness and easy-oxidation characteristic at high temperature. Herein, silica-modified carbon aerogels (SCAs) with extraordinarily high strength are prepared via a facile sol-gel polymerization of phenolic resin and siloxane, followed by ambient pressure drying and carbonization. The resulting SCAs possess medium-high density of ∼0.5 g·cm-3 and mesoporous structure with the mean pore size of 33 nm. During carbonization process, the siloxane could be gradually transformed into the amorphous SiO2 particles and crystalline SiC particles, which are coated on the surface of carbon nanoparticle and consequently improve the oxidation-resistance of carbon aerogels. Due to the density-porosity trade-off, the SCAs have high compressive strength of 10.0 MPa and satisfied thermal conductivities of 0.118 W·m-1·K-1 at 25 °C and 0.263 W·m-1·K-1 at 1000 °C. Furthermore, needled carbon fiber-reinforced SCAs (CF-SCAs) with ultrahigh compressive strength of 210.5 MPa are prepared, which exhibit good thermal conductivities of 0.207 W·m-1·K-1 at 25 °C and 0.407 W·m-1·K-1 at 1000 °C. The ultrahigh mechanical strength, good oxidation-resistance, good thermal insulation as well as the facile preparation make the SACs great promising in high-temperature insulations especially under harsh conditions.
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Affiliation(s)
- Kede Wu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, School of Chemical Engineering, Shanghai 200237, PR China
| | - Qi Zhou
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, School of Chemical Engineering, Shanghai 200237, PR China
| | - Junxiang Cao
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, School of Chemical Engineering, Shanghai 200237, PR China
| | - Zhen Qian
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, School of Chemical Engineering, Shanghai 200237, PR China
| | - Bo Niu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, School of Chemical Engineering, Shanghai 200237, PR China.
| | - Donghui Long
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, School of Chemical Engineering, Shanghai 200237, PR China; Key Laboratory of Specially Functional Polymeric Materials and Related Technology, East China University of Science and Technology, Shanghai 200237, PR China.
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36
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Zhao J, Wang G, Zhang A, Zhao G, Park CB. Nanocellular TPU composite foams achieved by stretch-assisted microcellular foaming with low-pressure gaseous CO2 as blowing agent. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101708] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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37
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Lee YH, Lee CW, Chou CH, Lin CH, Chen YH, Chen CW, Way TF, Rwei SP. Sustainable polyamide elastomers from a bio-based dimer diamine for fabricating highly expanded and facilely recyclable microcellular foams via supercritical CO2 foaming. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110765] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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38
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Guo Y, Zhang S, Wang G, Zhu Y. Fabrication of Anisotropic Polyphosphazene/Bio-based Poly(urethane-acrylate) composite foams with High Thermal Insulation and Flame Retardancy. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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39
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Dutta A, Banerjee D, Ghosh AK. Improved tensile and impact responses of microcellular PP/γ-irradiated elastomer blends corroborating microstructure and crystallinity. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2021.1967168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Anindya Dutta
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Debjyoti Banerjee
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
| | - Anup K. Ghosh
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, India
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40
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Aghvami-Panah M, Panahi-Sarmad M, Seraji AA, Jamalpour S, Ghaffarian SR, Park CB. LDPE/MWCNT and LDPE/MWCNT/UHMWPE self-reinforced fiber-composite foams prepared via supercritical CO2: A microstructure-engineering property perspective. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105248] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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Wu G, Xu Y, Chen J, Dang K, Yang W, Xie P. In situ
fibrillation‐reinforced polypropylene‐based multi‐component
foams. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Gaojian Wu
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Yuxuan Xu
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Junxiang Chen
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Kaifang Dang
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
| | - Weimin Yang
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
- State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Pengcheng Xie
- College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Beijing China
- State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
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42
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Rostami-Tapeh-Esmaeil E, Vahidifar A, Esmizadeh E, Rodrigue D. Chemistry, Processing, Properties, and Applications of Rubber Foams. Polymers (Basel) 2021; 13:1565. [PMID: 34068238 PMCID: PMC8153173 DOI: 10.3390/polym13101565] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/08/2021] [Accepted: 05/08/2021] [Indexed: 01/31/2023] Open
Abstract
With the ever-increasing development in science and technology, as well as social awareness, more requirements are imposed on the production and property of all materials, especially polymeric foams. In particular, rubber foams, compared to thermoplastic foams in general, have higher flexibility, resistance to abrasion, energy absorption capabilities, strength-to-weight ratio and tensile strength leading to their widespread use in several applications such as thermal insulation, energy absorption, pressure sensors, absorbents, etc. To control the rubber foams microstructure leading to excellent physical and mechanical properties, two types of parameters play important roles. The first category is related to formulation including the rubber (type and grade), as well as the type and content of accelerators, fillers, and foaming agents. The second category is associated to processing parameters such as the processing method (injection, extrusion, compression, etc.), as well as different conditions related to foaming (temperature, pressure and number of stage) and curing (temperature, time and precuring time). This review presents the different parameters involved and discusses their effect on the morphological, physical, and mechanical properties of rubber foams. Although several studies have been published on rubber foams, very few papers reviewed the subject and compared the results available. In this review, the most recent works on rubber foams have been collected to provide a general overview on different types of rubber foams from their preparation to their final application. Detailed information on formulation, curing and foaming chemistry, production methods, morphology, properties, and applications is presented and discussed.
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Affiliation(s)
| | - Ali Vahidifar
- Department of Polymer Science and Engineering, University of Bonab, Bonab 5551761167, Iran;
| | - Elnaz Esmizadeh
- Department of Polymer Science and Engineering, University of Bonab, Bonab 5551761167, Iran;
| | - Denis Rodrigue
- Department of Chemical Engineering, Université Laval, Quebec, QC G1V 0A6, Canada;
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43
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Ernault E, Diani J, Hallais S, Cocquet C. Relationship between microstructure and mechanical properties of polyether block amide foams. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25712] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Estève Ernault
- Laboratoire de Mécanique des Solides CNRS UMR 7649, École Polytechnique, Institut Polytechnique de Paris Palaiseau France
| | - Julie Diani
- Laboratoire de Mécanique des Solides CNRS UMR 7649, École Polytechnique, Institut Polytechnique de Paris Palaiseau France
| | - Simon Hallais
- Laboratoire de Mécanique des Solides CNRS UMR 7649, École Polytechnique, Institut Polytechnique de Paris Palaiseau France
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44
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45
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In-Situ Visualization of the Cell Formation Process of Foamed Polypropylene under Different Foaming Environments. Polymers (Basel) 2021; 13:polym13091468. [PMID: 34062824 PMCID: PMC8125430 DOI: 10.3390/polym13091468] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 11/16/2022] Open
Abstract
In this paper, the dynamic foaming process of micro-foaming polypropylene (PP) in different foaming environments in real time was obtained via a visualization device. The relationship curve between cell number (n) and foaming time (t) was plotted, and then the nucleation kinetics of foam cells was analyzed. Results showed that the formation rate of cells changed obviously with the variation of melt temperature and the content of the foaming agent. The n-t curves presented a typical "S" shape, which indicated that the appearance of the cell number increased slowly in the initial foaming period, then increased rapidly in a short time, and finally maintained a certain value. When a certain pressure was applied to the PP melt, the external force had a great influence on the n-t curve. With the increasing external force, the rate of cell formation increased rapidly, and the shape of the n-t curve changed from "S" to "semi-S" without an obvious slow increase. The investigation of the n-t relationship in the PP dynamic foaming process under different foaming environments could provide effective bases for improving the foaming quality of injection molding foaming materials.
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46
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The Relationship between the Morphology and Elasticity of Natural Rubber Foam Based on the Concentration of the Chemical Blowing Agent. Polymers (Basel) 2021; 13:polym13071091. [PMID: 33808133 PMCID: PMC8036522 DOI: 10.3390/polym13071091] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 11/17/2022] Open
Abstract
Concentrated natural latex was used to produce a rubber foam that is porous, elastic and well ventilated. The mechanical properties can be either soft or firm, depending on the formulation of the latex used. Briefly, concentrated natural latex was mixed with chemical agents to make the rubber foam on a laboratory scale using the Dunlop process. In this work, we changed the concentration of the chemical blowing agent in the latex. The morphological properties of the rubber foam were characterised using scanning electron microscopy, and the mechanical properties, or elasticity, were studied using compression experiments and the Mooney-Rivlin calculation. The results show that the concentration of the chemical blowing agent affects the morphological properties of the rubber foam but not the mechanical properties, indicating the heterogeneous structure of the rubber foam. The thermodynamic parameters (∆G and ∆S) and the internal energy force per compression force (Fu/F) of the rubber foam with various amounts of chemical blowing agent were also investigated. This study could be applied in the foam industry, particularly for pillow, mattress and insulation materials, as the present work shows the possible novel control of the morphological structure of the rubber foam without changing its mechanical properties. The difference in cell sizes could affect the airflow in rubber foam.
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Anstey A, Chang E, Kim ES, Rizvi A, Kakroodi AR, Park CB, Lee PC. Nanofibrillated polymer systems: Design, application, and current state of the art. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2020.101346] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Wu K, Dong W, Pan Y, Cao J, Zhang Y, Long D. Lightweight and Flexible Phenolic Aerogels with Three-Dimensional Foam Reinforcement for Acoustic and Thermal Insulation. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05010] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kede Wu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Dong
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yankai Pan
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Junxiang Cao
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yayun Zhang
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Donghui Long
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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Koutsamanis I, Spoerk M, Arbeiter F, Eder S, Roblegg E. Development of Porous Polyurethane Implants Manufactured via Hot-Melt Extrusion. Polymers (Basel) 2020; 12:E2950. [PMID: 33321876 PMCID: PMC7764633 DOI: 10.3390/polym12122950] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 02/06/2023] Open
Abstract
Implantable drug delivery systems (IDDSs) offer good patient compliance and allow the controlled delivery of drugs over prolonged times. However, their application is limited due to the scarce material selection and the limited technological possibilities to achieve extended drug release. Porous structures are an alternative strategy that can overcome these shortcomings. The present work focuses on the development of porous IDDS based on hydrophilic (HPL) and hydrophobic (HPB) polyurethanes and chemical pore formers (PFs) manufactured by hot-melt extrusion. Different PF types and concentrations were investigated to gain a sound understanding in terms of extrudate density, porosity, compressive behavior, pore morphology and liquid uptake. Based on the rheological analyses, a stable extrusion process guaranteed porosities of up to 40% using NaHCO3 as PF. The average pore diameter was between 140 and 600 µm and was indirectly proportional to the concentration of PF. The liquid uptake of HPB was determined by the open pores, while for HPL both open and closed pores influenced the uptake. In summary, through the rational selection of the polymer type, the PF type and concentration, porous carrier systems can be produced continuously via extrusion, whose properties can be adapted to the respective application site.
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Affiliation(s)
- Ioannis Koutsamanis
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria; (I.K.); (M.S.); (S.E.)
- Institute of Pharmaceutical Sciences, Pharmaceutical Technology and Biopharmacy, University of Graz, Universitaetsplatz 1, 8010 Graz, Austria
| | - Martin Spoerk
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria; (I.K.); (M.S.); (S.E.)
| | - Florian Arbeiter
- Institute of Materials Science and Testing of Polymers, Montanuniversitaet Leoben, Otto Gloeckel-Straße 2, 8700 Leoben, Austria;
| | - Simone Eder
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria; (I.K.); (M.S.); (S.E.)
| | - Eva Roblegg
- Research Center Pharmaceutical Engineering GmbH, Inffeldgasse 13, 8010 Graz, Austria; (I.K.); (M.S.); (S.E.)
- Institute of Pharmaceutical Sciences, Pharmaceutical Technology and Biopharmacy, University of Graz, Universitaetsplatz 1, 8010 Graz, Austria
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Sarver JA, Hassler JC, Kiran E. Linking thermophysical and rheological properties to the selection of CO2 foaming conditions of rubbery elastomers using the relative rigidity reduction path. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.105015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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