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Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

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使用聚合物微凝从溶液中控制核化.

Ying Diao¹, Matthew E Helgeson, Allan S Myerson

¹Novartis-MIT Center for Continuous Manufacturing and Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, E19-502b, Cambridge, Massachusetts 02139, United States.

Journal of the American Chemical Society

|February 25, 2011

概括

此摘要是机器生成的。

控制晶体物质核化是一项挑战. 这项研究表明,聚合物微凝可以通过调整其微观结构和纳米限制来精确控制核化动力学,从而提高结晶率.

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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
结晶科学结晶科学

背景情况:

晶体材料的核化对材料特性至关重要,但很难控制.
目前的方法缺乏可预测性,阻碍了合理的材料设计.
聚合物微凝是具有调节性质的多功能材料.

研究的目的:

开发一种使用聚合物微凝控制晶核形成的新方法.
研究聚合物微观结构和纳米限制对核化动学的影响.
为了确定增强核化速率的最佳条件.

主要方法:

合成具有系统变化的微观结构的聚合物微凝.
在微凝中调整纳米限制的程度.
分析聚合物-溶液相互作用对核化动学的影响.
在不同的限制条件下测量核化速率.

主要成果:

聚合物微观结构显著影响核化动力学.
确定了最佳的聚合物网状大小,大大提高了核化速率.
聚合物-溶液相互作用的程度调节了核化增强.
使用聚合物微凝对核形成进行可调节的控制.

结论:

聚合物微凝提供了一个可调节的平台来控制核化.
微观结构依赖的纳米限制是控制核化的关键.
这种方法为结晶过程中的合理材料设计提供了一个有前途的途径.