在聚合物纳米复合材料化中的管扩张上添加寡合物的效应
Yi Feng1, Ruhao Li1, Christopher Mbonu1
1Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ, 07030, USA.
Macromolecular rapid communications
|December 22, 2023
概括
将寡合物添加到聚合物纳米复合材料中,通过减少平原模量和纠度来提高可加工性. 粒子相互作用显著影响质性质,特别是在薄弱的接口.
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
- 类风病学 类风病学 类风病学
背景情况:
- 聚合物纳米复合材料提供了增强的性能,但往往遭受处理能力差.
- 了解质行为对于优化纳米复合材料加工至关重要.
- 作为一种修改聚合物融性质的策略,研究了寡合体添加.
研究的目的:
- 为了研究寡合物添加对聚合物纳米复合物融物质性质的影响.
- 确定寡合物如何影响纠聚甲酸 (PMA) 化的可加工性.
- 阐明粒子-聚合物相互作用和分散在学缩放上的作用.
主要方法:
- 对平原模量 (GN) 的缩放分析,以评估机械行为.
- 聚甲基烯酸盐 (PMA) 溶液的风湿学测量,含有不同寡合物的含量.
- 传输电子显微镜 (TEM) 和小角度X射线散射 (SAXS) 用于检查粒子分散状态.
- 分析管稀释缩放指数的分析.
主要成果:
- 在PMA溶液中,添加寡合体降低了平原模量 (GN) 和明显纠度 (Z).
- 散的PMA-SiO2纳米复合材料显示没有改变的管稀释缩放指数.
- 具有弱聚合物-颗粒接口的复合材料表现出相位分离和管稀释缩放指数为4在17体积%的颗粒负荷下.
结论:
- 寡合物可以通过改变质性质来增强聚合物纳米复合物的可加工性.
- 强大的聚合物颗粒接口将颗粒对管稀释缩放的影响降至最低.
- 薄弱的接口和粒子聚类可以显著影响链条纠和质行为.
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