Niazov-Elkan Angelica, Weissman Haim, Shimoni Eyal, Sui XiaoMeng, Feldman Yishay, Wagner H Daniel, Rybtchinski Boris
Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel.
Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 76100, Israel.
ACS Nano. 2023 Nov 14;17(21):20962-20967. doi: 10.1021/acsnano.3c02528. Epub 2023 Oct 23.
Development of biodegradable plastic materials is of primary importance in view of acute environmental and health problems associated with the accumulation of plastic waste. We fabricated a biodegradable composite material based on hydroxyethyl cellulose polymer and tyrosine nanocrystals, which demonstrates enhanced strength and ductility (typically mutually excluding properties), superior to most biodegradable plastics. This emergent behavior results from an assembly pattern that leads to a uniform nanoscale morphology and strong interactions between the components. Water-resistant biodegradable composites encapsulated with hydrophobic polycaprolactone as a protection layer were also fabricated. Self-assembly of robust sustainable plastics with emergent properties by using readily available building blocks provides a valuable toolbox for creating sustainable materials.
鉴于与塑料垃圾积累相关的严重环境和健康问题，可生物降解塑料材料的开发至关重要。我们制备了一种基于羟乙基纤维素聚合物和酪氨酸纳米晶体的可生物降解复合材料，该材料表现出增强的强度和延展性（通常是相互排斥的性能），优于大多数可生物降解塑料。这种特殊行为源于一种组装模式，该模式导致均匀的纳米级形态以及各组分之间的强相互作用。还制备了以疏水性聚己内酯作为保护层封装的耐水可生物降解复合材料。通过使用现成的构建模块自组装具有特殊性能的坚固可持续塑料，为创建可持续材料提供了一个有价值的工具箱。
