Investigation of molecular chain orientation change of polymer crystals in phase transitions by friction anisotropy measurement

被引：18

作者：

Kimura, Kuniko ^{[1
]}

Kobayashi, Kei

Yamada, Hirofumi

Matsushige, Kazumi

机构：

[1] Kyoto Univ, Dept Elect Sci & Engn, Kyoto 6158510, Japan

[2] Kyoto Univ, Innovat Cluster Creat Project, Kyoto 6158510, Japan

[3] Kyoto Univ, Int Innovat Ctr, Kyoto 6158510, Japan

来源：

LANGMUIR | 2007年 / 23卷 / 09期

关键词：

D O I：

10.1021/la063270p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Direct observation of the molecular orientation change in polymer crystals provides us visible information for understanding their structural phase-transition mechanisms. In this letter, we successfully identified the main-chain orientation of poly(vinylidenefluoride-trifluoroethylene) (P(VDF-TrFE)) crystals over all directions using friction anisotropy measured by lateral-modulation friction force microscopy (LM-FFM). This technique made possible our investigation of molecular orientation changes caused by a ferroelectric phase transition and also a fabrication process for artificial nanometer-scale structures. These results give us visual information that is directly connected to the transition mechanisms.

引用

页码：4740 / 4745

页数：6

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