Mirzaei Akbar, Javanshir Shahrzad, Servati Peyman
Pharmaceutical and Heterocyclic Compounds Research Laboratory, Chemistry Department, Iran University of Science and Technology Tehran Iran.
Department of Electrical and Computer Engineering, University of British Columbia Vancouver BC V6T 1Z4 Canada
RSC Adv. 2023 Jan 4;13(2):1094-1105. doi: 10.1039/d2ra06333f. eCollection 2023 Jan 3.
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 K to 0.124 W m K 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.
开发具有低环境影响以及诸如自愈性、阻燃性、低导热性等多种特性的新型生物基冷冻凝胶材料，已成为特殊用途材料领域的前沿研究课题和一项重大挑战。在此，我们报告一种简单的加工方法，用于在冷冻条件下制备基于天然且生物相容聚合物的新型介孔轻质隔热生物质杂化冷冻凝胶，这些聚合物包括海洋糖胺聚糖角叉菜胶苔藓（CM）和聚甲基丙烯酸甲酯（PMMA），简称为CM/PMMA。对所得杂化冷冻凝胶的力学、热学和物理化学特性进行了研究。研究了厚度增加对导热性和抗压强度的影响。结果表明，随着厚度增加，导热率从0.068 W m K增加到0.124 W m K。此外，抗压强度从89.5% MPa变为95.4% MPa。结果显示，冷冻凝胶具有褶皱表面和相互连通的孔隙，并表现出高柔韧性、自愈能力、阻燃性和低导热性。
