在粘弹性凝中分离相位和成熟
Tine Curk1, Erik Luijten1,2,3,4
1Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208.
概括
聚合物凝等粘弹性材料的相分离显示出独特的域增长. 一个新的成熟指数,取决于材料特性,不同于标准的奥斯瓦尔德成熟,影响软材料的稳定性.
科学领域:
- 软物质物理学 软物质物理学
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
背景情况:
- 阶段分离对于软材料的稳定性和功能至关重要.
- 了解粘弹性材料的域增长动态是必不可少的.
- 像奥斯瓦尔德成熟等现有的模型不能完全捕捉粘弹性行为.
研究的目的:
- 研究粘弹性材料中相位分离和域增长的动态.
- 确定聚合物凝中域增长的成熟指数.
- 为权力定律放松行为概括发现,并与实验结果进行比较.
主要方法:
- 分析理论. 分析理论.
- 蒙特卡洛的模拟.
- 对粘弹性质和功率定律放松的分析.
主要成果:
- 在粘弹性材料中发现了一种新的域生长模式.
- 成熟指数 ([公式:见文本]) 取决于粘弹性特性,不同于奥斯瓦尔德成熟 ([公式:见文本]).
- 对于马克斯韦材料,指数被发现是[公式:参见文本].
结论:
- 这项研究揭示了粘弹性系统中明显的相分离机制.
- 这些发现与软材料的长期稳定性有关.
- 结果为解释交叉连接网络和细胞骨架的实验数据提供了一个框架.
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