Polymer crystallization in 25-nm spheres

被引：319

作者：

Loo, YL ^{[1
]}

Ryan, AJ

机构：

[1] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

[2] Univ Sheffield, Dept Chem, Sheffield S3 7HF, S Yorkshire, England

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.84.4120

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Crystallization within the discrete spheres of a block copolymer mesophase was studied by time-resolved x-ray scattering. The cubic packing of microdomains, established by self-assembly in the melt, is preserved throughout crystallization by strong interblock segregation even though the amorphous matrix block is well above its glass transition temperature. Homogeneous nucleation within each sphere yields isothermal crystallizations which follow first-order kinetics, contrasting with the sigmoidal kinetics normally exhibited in the quiescent crystallization of bulk polymers.

引用

页码：4120 / 4123

页数：4

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