首页|Reversible-gel-assisted,ambient-pressure-dried,multifunctional,flame-retardant biomass aerogels with smart high-strength-elasticity transformation

Reversible-gel-assisted,ambient-pressure-dried,multifunctional,flame-retardant biomass aerogels with smart high-strength-elasticity transformation

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Bio-based aerogels,which are poised as compelling thermal insulators,demand intricate synthesis procedures and have limited durability under harsh conditions.The integration of smart stimuli-response transitions in biomass aerogels holds promise as a solution,yet remains a challenge.Here,we introduce a pioneering strategy that employs reversible-gel-assisted ambient-pressure drying without organic solvents to craft multifunctional bio-based aerogels.By exploiting the thermally reversible gelling propensity of select biomasses,we anchor emulsified bubbles within cross-linked hydrogels,circumventing surface tension issues during mild drying.The resultant aerogels feature a robust porous matrix that is imbued with stable bubbles,yielding low thermal conductivity,high flame retardancy and robust resistance to diverse rigors.This innovative approach facilitates a paradigm shift in intelligent fire protection in which aerogels transition from robust to flexible in response to water stimuli,effectively shielding against thermal hazards and external forces.This work opens up a facile,eco-friendly and mild way to fabricate advanced biomass aerogels with stimuli-responsive transformation.

biomass aerogelambient-pressure dryingflame retardancesolvation-controlled elastificationharsh-condition resistance

Ting Wang、Ying-Jiao Zhan、Ming-Jun Chen、Lei He、Wen-Li An、Shimei Xu、Wei Wang、Jian-Jun Shi、Hai-Bo Zhao、Yu-Zhong Wang

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College of Chemistry,The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE),National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan),State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610064,China

Green Preparation and Recycling Laboratory of Functional Polymeric Materials,College of Science,Xihua University,Chengdu 610039,China

Science and Technology on Advanced Functional Composite Laboratory,Aerospace Research Institute of Materials& Processing Technology,Beijing 100076,China

2024

10.1093/nsr/nwae360

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ISSN：
年,卷(期)：2024.11(11)