期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 209, 期 24, 页码 2516-2526出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.200800501
关键词
atomic force microscopy (AFM); ferroelectricity; heat-controlled spin coating; piezoresponse image; poly(vinylidene fluoride) (PVDF)
资金
- Kyung Hee University [KHU-20070772]
Nanoscale thin films of PVDF containing the beta-crystalline phase were directly prepared by heat-controlled spin coating without the influence of external stimuli either in the form of additives or post-treatments. Sample preparation was carried out at different temperatures, ranging from 10 to 70 degrees C. At elevated temperatures (40, 50, 60 and 70 degrees C), PVDF was crystallized into the beta-phase, while at near-ambient conditions (20 and 30 degrees C) it was crystallized into the beta-phase. Some samples exhibited a phase-segregated morphology, with varying particle sizes depending on the preparation temperature. The ferroelectric nature of a typical sample, prepared at 40 degrees C, was visualized by piezoresponse imaging studies.
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