Biobased Poly(furfuryl alcohol)/Clay Aerogel Composite Prepared by a Freeze-Drying Process

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• 作者：Tianwei Wang ; Hua Sun ; Jiawei Long ; Yu-Zhong Wang ; David Schiraldi
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：May 2, 2016
• 年：2016
• 卷：4
• 期：5
• 页码：2601-2605
• 全文大小：443K
• 年卷期：0
• ISSN：2168-0485

文摘

Low density poly(furfuryl alcohol)/clay “PFA/clay” composite aerogels were fabricated by in situ polymerization of aqueous solutions of furfuryl alcohol monomer in the presence of hydrophilic sodium montmorillonite, followed by freeze-drying. Uncured PFA/clay composite aerogels exhibited poor mechanical properties and low water resistance. Oven curing of these materials increased their compressive modului, water resistance, and thermal stabilities. The structures of these PFA/aerogels before and after curing were studied by SEM; their flammabilities were studied by a horizontal burning test and cone calorimetry. Cured aerogels exhibited low flammability, withstanding a gas flame for over 20 s without noticeable combustion.