Confined Crystallization of Polymers within Nanopores,Accounts of Chemical Research

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Confined Crystallization of Polymers within Nanopores
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2021-07-16 , DOI: 10.1021/acs.accounts.1c00242
Guoming Liu _{1,

2} , Alejandro J Müller _{3,

4} , Dujin Wang _{1,

2}

Affiliation

Crystallization of polymeric materials under nanoscopic confinement is highly relevant for nanotechnology applications. When a polymer is confined within rigid nanoporous anodic aluminum oxide (AAO) templates, the crystallization behavior experiences dramatic changes as the pore size is reduced, including nucleation mechanism, crystal orientation, crystallization kinetics, and polymorphic transition, etc. As an experimental prerequisite, exhaustive cleaning procedures after infiltrations of polymers in AAO pores must be performed to ensure producing an ensemble of isolated polymer-filled nanopores. Layers of residual polymers on the AAO surface percolate nanopores and lead to the so-called “fractionated crystallization”, i.e., multiple crystallization peaks during cooling.

中文翻译：

纳米孔内聚合物的受限结晶

纳米限制下聚合物材料的结晶与纳米技术应用高度相关。当聚合物被限制在刚性纳米多孔阳极氧化铝 (AAO) 模板内时，结晶行为会随着孔径的减小而发生剧烈变化，包括成核机制、晶体取向、结晶动力学和多晶型转变等。作为实验前提，必须在聚合物渗入 AAO 孔后进行彻底的清洁程序，以确保产生一组孤立的聚合物填充纳米孔。AAO 表面上的残留聚合物层渗入纳米孔并导致所谓的“分级结晶”，即在冷却过程中出现多个结晶峰。

更新日期：2021-08-03

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