Crystallization behavior and electroactive properties of PVDF, P(VDF-TrFE) and their blend films

	Crystallization behavior and electroactive properties of PVDF, P(VDF-TrFE) and their blend films
	Jia, Nan 1; He, Qian 1; Sun, Jing 2; Xia, Guangmei 3; Song, Rui 1
刊名	POLYMER TESTING
	2017-02-01
卷号	57 页码:302-306
关键词	Poly(Vinylidene Fluoride) Poly(Vinylidene Fluoride-trifluoroethylene) Crystallization Piezoelectric Materials
英文摘要	PVDF, poly(vinylidene fluoride), as a semi-crystalline polymer, has interesting electroactive properties but usual melt and solutionprocessing techniques result in its thermodynamically favored non-polar alpha-phase. By comparison, poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE), PT for short, directly crystallizes in the polar beta-phase under the same conditions as PVDF. In this study, blend thin films comprising PVDF and P(VDF-TrFE) were prepared by solvent casting method. The difference in the crystallization behavior is comprehensively investigated between the polymers: PVDF, P(VDF-TrFE), and the resulting blend films. It is found that replacement of the fluoride atom in TrFE monomer induces a strong steric hindrance that may alter the crystallization process to become more favorable for nucleation of the PVDF beta-phase. To figure out the effect of TrFE content on the crystallization behavior and electroactive properties, films with different blend ratios of PVDF and P(VDF-TrFE) were prepared. We found that the PVDF films exhibit higher crystallization activation energy (Delta E) as PT content increases. The atomic force microscopy (AFM) in the piezoresponse force microscopy (PFM) mode illustrated that PSTS films with equal contents of PVDF and P(VDF-TrFE) induced the highest d(33) values. (C) 2016 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38069]
专题	化学研究所_工程塑料实验室
作者单位	1.Univ Chinese Acad Sci, Coll Chem & Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China 3.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Jia, Nan,He, Qian,Sun, Jing,et al. Crystallization behavior and electroactive properties of PVDF, P(VDF-TrFE) and their blend films[J]. POLYMER TESTING,2017,57:302-306.
APA	Jia, Nan,He, Qian,Sun, Jing,Xia, Guangmei,&Song, Rui.(2017).Crystallization behavior and electroactive properties of PVDF, P(VDF-TrFE) and their blend films.POLYMER TESTING,57,302-306.
MLA	Jia, Nan,et al."Crystallization behavior and electroactive properties of PVDF, P(VDF-TrFE) and their blend films".POLYMER TESTING 57(2017):302-306.