Engineering Lignocellulose Fibers with Higher Thermal Stability through Natural Fiber Welding

编号 020019604

推送时间 20190722

研究领域 林产化工 

年份 2019 

类型 期刊 

语种 英语

标题 Engineering Lignocellulose Fibers with Higher Thermal Stability through Natural Fiber Welding

来源期刊 MACROMOLECULAR MATERIALS AND ENGINEERING

期 第196期

发表时间 20190312

关键词 ionic liquids;  lignocellulose;  nanocellulose;  natural fiber welding;  silane;  thermal stability; 

摘要 This study reveals how natural fiber welding (NFW) can be used to engineer biopolymer materials with improved thermal stability. First, it is shown how NFW without binders improves lignocellulose yarn thermal stability by approximate to 17 degrees C, primarily by condensing microfibril structure. Next, silanized-cellulose nanofibrils (Si-CNFs) are developed as NFW binders; this silanization process alters CNF physical and thermal properties. During pyrolysis, SixOy networks form, which delay CNF decomposition (up to 37 degrees C), slow cellulose mass loss rates (up to 89%), and can enhance char yield more than twofold. When used as NFW binders, Si-CNFs increase lignocellulose yarn thermal stability (up to 17 degrees C) proportional to siloxane amount, and can reduce cellulose mass loss rates (approximate to 25% compared to welding without binder). These exciting results highlight the potential of NFW as a green-engineering process to transform natural fibers into more thermally stable, biocomposite textile yarns.

服务人员 尚玮姣

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