Wetting transition in cylindrical alumina nanopores with polymer melts

被引：221

作者：

Zhang, Mingfu

Dobriyal, Priyanka

Chen, Jiun-Tai

Russell, Thomas P. ^{[1
]}

Olmo, Jessica

Merry, Aurora

机构：

[1] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA

[2] Ludlow High Sch, Ludlow, MA 01056 USA

[3] Salem High Sch, Salem, NH 03079 USA

来源：

NANO LETTERS | 2006年 / 6卷 / 05期

关键词：

D O I：

10.1021/nl060407n

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a systematic study of the wetting of cylindrical alumina nanopores with polystyrene melts. A transition from partial to complete wetting was observed with increasing annealing temperature, resulting in the formation of very different one-dimensional polymeric nanostructures (nanorods and nanotubes) within cylindrical alumina nanopores. The wetting transition temperature is dependent on the polymer molecular weight. The large difference in the wetting rate between partial and complete wetting was successfully used to fractionate polymers with different molecular weights.

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页码：1075 / 1079

页数：5

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