分散剂
离子液体
木质素
木质素磺酸盐
纤维素
化学工程
化学
生物复合材料
聚电解质
离子键合
有机化学
材料科学
高分子化学
聚合物
离子
复合材料
色散(光学)
催化作用
复合数
工程类
物理
光学
作者
Ryan Guterman,V. Molinari,Elinor Josef
标识
DOI:10.1002/anie.201907385
摘要
Abstract Ionic liquid lignins are prepared from sodium lignosulfonate by a cation exchange reaction and display glass transition temperatures as low as −13 °C. Diethyleneglycol‐functionalized protic cations inhibit lignin aggregation to produce a free‐flowing “ionic liquid lignin”, despite it being a high‐molecular‐weight polyelectrolyte. Through this approach, the properties of both lignin and ionic liquids are combined to create a dispersant and binder for cellulose+gluten mixtures to produce small microphases. Biocomposite testing pieces are produced by hot‐pressing this mixture, yielding a material with fewer defects and improved toughness in comparison to other lignins. The use of unmodified lignosulfonate, acetylated lignosulfonate, or free ionic liquid for similar materials production yields poorer substances because of their inability to maximize interfacial contact and complexation with cellulose and proteins.
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