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Morphology and Physical Properties of Binary Blend Based on PVDF and Multi‐Walled Carbon Nanotube
Author(s) -
Nam Young Wan,
Kim Woo Nyon,
Cho Yong Han,
Chae Dong Wook,
Kim Gwang Ho,
Hong Seung Pyo,
Hwang Seung Sang,
Hong Soon Man
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750423
Subject(s) - materials science , crystallinity , carbon nanotube , crystallization , composite material , percolation threshold , morphology (biology) , conductivity , percolation (cognitive psychology) , nanotube , crystal (programming language) , chemical engineering , electrical resistivity and conductivity , biology , chemistry , electrical engineering , neuroscience , computer science , engineering , genetics , programming language
Semicrystalline Poly(vinylidene fluoride)(PVDF) was melt blended by multi‐ walled carbon nanotube (MWNT) at various contents (0.01 ∼ 5 wt%) using internal mixer. The relationships between morphology and physical properties based on PVDF and MWNT were investigated. As the MWNT content is increased, the apparent supercooling required for PVDF crystallization and the size of spherulites in PVDF decrease. In the WAXD profiles, the incorporation of MWNT produced a large shoulder at 2 θ = 20.7° with increasing the MWNT content, corresponding to the polar β ‐form crystal of PVDF. The experimental percolation threshold for the electrical conductivity in PVDF was estimated and clearly occured between 2 and 2.5 wt%. Similar tendency was also observed in thermal conductivity and permittivity.