基于聚烯和改性天然填充剂的复合材料
Ilnur Fayzullin1, Aleksandr Gorbachev1, Svetoslav Volfson1
1Institute of Polymers, Kazan National Research Technological University, 68 K. Marx Str., 420015 Kazan, Russia.
Polymers
|June 27, 2024
概括
聚烯复合材料中天然填料的酶性修饰增强了拉伸强度和冲击粘度等机械性能. 这种表面修改还减少了水的吸收,并改善了填充物-聚合物相互作用,创造了先进的材料.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 生物技术是生物技术.
背景情况:
- 聚合物复合材料提供了多功能应用,但通常需要性能增强.
- 自然填充剂是合成填充剂的可持续替代品.
- 酶修饰可以提高聚合物矩阵中天然填充剂的兼容性和性能.
研究的目的:
- 研究酶修饰对含有天然填充剂的聚烯复合材料的影响.
- 为了确定不同天然填充剂的最佳修饰参数 (时间,水分模量).
- 评估修改对复合材料物理,机械和表面性能的影响.
主要方法:
- 在高切削力下制备天然填充剂 (木材,向日,米) 的酶制剂.
- 确定每个填充剂的最佳修改时间和水分模量.
- 物理和机械测试 (抗拉强度,冲击粘度,吸水能力).
- 自由表面能量分析以评估填充剂-聚合物相互作用.
主要成果:
- 天然填料的酶表面改造改善了机械性能:木材和向日填料的抗拉强度增加了10%,冲击粘度增加了12%.
- 吸水率显著降低:在煮沸后,木面粉减少30%,大米减少10%,在室温下14天后,大米减少30%以上.
- 复合材料极性降低,表明修改后的填充剂和聚烯基基层之间的相互作用增强.
结论:
- 酶修饰是一种有效的策略,可以提高聚烯复合材料中天然填充剂的性能.
- 优化的修改参数至关重要,并且是特定于填充剂的.
- 改进的性能使这些先进的复合材料在汽车,航空航天和建筑行业的潜在应用中处于最佳位置.
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