Construction of chitosan/alginate aerogels with three-dimensional hierarchical pore network structure via hydrogen bonding dissolution and covalent crosslinking synergistic strategy for thermal management systems.

Autor: Yang Q; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China., Feng S; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China., Guo J; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China; State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, PR China. Electronic address: guojing8161@163.com., Guan F; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China; Key Laboratory of Textile Fiber and Products (Wuhan Textile University), Ministry of Education, Wuhan 430200, PR China., Zhang S; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China; State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, PR China. Electronic address: 20430155@qq.com., Sun J; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China., Zhang Y; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China., Xu Y; College of Textile and Clothing, Hunan Institute of Engineering, Xiangtan 411104, PR China., Zhang X; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China., Bao D; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China., He J; School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, PR China.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2024 Aug; Vol. 275 (Pt 2), pp. 133367. Date of Electronic Publication: 2024 Jun 30.
DOI: 10.1016/j.ijbiomac.2024.133367
Abstrakt: To replace traditional petrochemical-based thermal insulation materials, in this work, the chitosan (CHI)/alginate (ALG) (CA) aerogels with three-dimensional hierarchical pore network structure were constructed by compositing CHI and ALG using a synergistic strategy of hydrogen bonding dissolution and covalent crosslinking. The structure and properties were further regulated by crosslinking the CA aerogels with epichlorohydrin (ECH). The CA aerogels exhibited various forms of covalent crosslinking, hydrogen bonding and electrostatic interactions, with hydrogen bonding content reaching 79.12 %. The CA aerogels showed an excellent three-dimensional hierarchical pore network structure, with an average pore size minimum of 15.92 nm. The structure regulation of CA aerogels obtained excellent compressive properties, with an increase of stress and strain by 137.61 % and 45.05 %, which can support a heavy object 5000 times its weight. Additionally, CA aerogels demonstrate excellent thermal insulation properties and low thermal conductivity, comparable to commercially available insulation materials. More importantly, CA aerogels have good cyclic insulation stability and thermal properties, and they have a flame retardancy rating of V-0, which shows the stability of insulation properties and excellent safety. CA aerogels provide new ideas for the development of biomass thermal insulation materials and are expected to be candidates for thermal management applications.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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