可化处理的聚乙烯醇/木质素复合材料通过协同塑化木质素来提高强度
Jianbin Mo1, Junjie Lei1, Haixu Wang1
1State Key Laboratory of Pulp and Paper Engineering, School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, South China University of Technology, Guangzhou 510640, PR China.
International journal of biological macromolecules
|April 30, 2024
概括
红作为绿色塑化剂,改善聚乙醇 (PVA) 复合材料的化处理. 这增强了PVA.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 聚乙醇 (PVA) 在其分解温度附近具有高点,阻碍了炼加工.
- 在PVA中的强结合有助于其加工挑战.
研究的目的:
- 研究素作为可化PVA的绿色二次增塑剂.
- 为了提高PVA复合材料的机械性能和热稳定性.
主要方法:
- 使用乙胺和素对PVA进行协同塑化.
- 对结构变化和键破裂的分析.
- 评估热性质 (点,加工窗口).
- 机械测试 (拉力强度,模量).
主要成果:
- 宁使PVA的点从185°C降低到151°C.
- 扩大了PVA复合材料的热处理窗口.
- 显著增加拉伸强度 (71 MPa) 和模量 (1.34 GPa).
- 宁阻碍了乙胺的迁移,并改善了疏水性和紫外线屏蔽.
结论:
- 氨酸作为PVA的有效绿色二次增塑剂.
- 素和乙胺的协同作用使炼加工和材料增强成为可能.
- 素的结合产生了具有增强机械,热和功能性质的PVA复合材料.
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