从键重建纤维素分子间相互作用到动态共价网络的重建使热处理性纤维素塑料具有可调节的强度和性
Zhiping Su1,2, Le Yu3, Lan Cui2
1State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China.
ACS nano
|November 3, 2023
概括
纤维素纤维素是一种纤维素.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
背景情况:
- 纤维素是一种可再生和可生物降解的资源.
- 纤维素中的强键限制了其可加工性.
- 基于化石的塑料带来了环境挑战.
研究的目的:
- 从纤维素开发出一种高性能,环保的塑料替代品.
- 为了克服原生纤维素的加工限制.
主要方法:
- 通过用动态共价键取代键来重建纤维素分子间相互作用.
- 在温和的温度 (70°C) 下将纤维素热加工成塑料.
- 通过动态共价网络结构调整机械性能.
主要成果:
- 使用动态共价键开发了一种可加工的纤维素塑料.
- 实现了可调节的机械强度 (3.0-33.5 MPa) 和性 (43-321 kJ m-2).
- 证明了对水,溶剂,酸,和高温 (>400°C) 的极好的抵抗力.
- 证实了良好的化学和生物降解性和可回收性.
结论:
- 动态共价键有效地提高了纤维素的可加工性.
- 由此产生的纤维素塑料为化石塑料提供了一个可持续的替代品.
- 这种方法为高性能生物基材料提供了可行的途径.
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