Manipulating Crystal Orientation of Poly(ethylene oxide) by Nanopores

被引：69

作者：

Guan, Yu ^{[1
]}

Liu, Guoming ^{[1
]}

Gao, Peiyuan ^{[2
]}

Li, Li ^{[3
]}

Ding, Guqiao ^{[4
]}

Wang, Dujin ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China

来源：

ACS MACRO LETTERS | 2013年 / 2卷 / 03期

基金：

中国国家自然科学基金;

关键词：

SYNDIOTACTIC POLYSTYRENE; CYLINDRICAL NANOPORES; CRYSTALLIZATION; TEMPLATES; ALUMINA; NANOCOMPOSITES; POLYETHYLENE; COPOLYMERS;

D O I：

10.1021/mz300592v

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The confined crystallization behavior of a low molecular weight monodisperse polyethylene oxide (PEO) in anodic alumina oxide (AAO) templates was investigated. Homogeneous nucleation of polymer in AAO templates was confirmed. Within AAO with diameter larger than the contour length of PEO chains, the "kinetics selective growth" crystallization mechanism was confirmed based on the observation that the chain axis preferentially aligned perpendicular to the pore axis. However, when AAO diameter further decreases to a value smaller than the contour length of PEO, unique orientation with chain axis aligned parallel to the pore axis was observed for the first time. The results were discussed based on the competition between thermodynamics and kinetics during the crystallization process.

引用

页码：181 / 184

页数：4

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