材料科学
细菌纤维素
各向同性
纤维素
壳体(结构)
气凝胶
芯(光纤)
化学工程
复合材料
热导率
纳米纤维
电导率
化学
物理
量子力学
工程类
物理化学
作者
Shanying Sui,Huafeng Quan,Jingxing Wang,Yun Tan,Zhifang Sun,Yi Zhang
标识
DOI:10.1016/j.cej.2023.146729
摘要
Inspired by the ultra-lightweight and strong cross-linked spider web, a core–shell design is proposed for fabricating isotropic polymethylsilsesquioxane (PMSQ) rigid-reinforced nanofibers (polypyrrole-coated bacterial cellulose (PPy@BC) and bacterial cellulose (BC)) aerogels via non-directional freeze-drying. As-developed aerogels (PMPBB aerogels) exhibit isotropic properties of compressibility and recoverability, hydrophobicity, low thermal conductivity, and electric conductivity. Benefiting from above characteristics, PMPBB aerogels possess remarkable capacities of oil/organic solvent–water separation, self-cleaning, thermal insulation, and real-time monitoring of human motion signals. The combination of core–shell design with non-directional freeze-drying method offers a valuable reference for seeking innovative methods to develop other advanced aerogels.
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