南京工业大学学报（自然科学版）2013，Vol.35Issue(4)：17-20,4.DOI:10.3969/j.issn.1671-7627.2013.04.004
聚偏氟乙烯在不同温度乙醇中的结晶行为
Crystallization behavior of poly (vinylidene fluoride) in ethanol at different temperatures
摘要
Abstract
The crystallization of poly (vinylidene fluoride) (PVDF) in ethanol was carried out by dropping PVDF N,N-dimethyl formamide (DMF) solution into a large amount of non-solvent ethanol.The influences of temperature on PVDF crystallization phase,morphology and thermal behavior were investigated.Sample performance was characterized by Fourier transform infrared spectroscopy (FT-IR),X-ray diffraction (XRD),scanning electron microscopy (SEM),and differential scanning calorimetry (DSC).The results showed that PVDF crystallized in α andβ3 phases,and the relative fraction of α phase increased with the increasing crystallization temperature.A large quantity of minute adhesive flakes or spheres structures were observed from sample surface.In fact,these structures were imperfect primary crystals of PVDF.The crystallized PVDF at different temperatures had similar melting curves,while it had a lower degree of crystallinity at higher temperature.关键词
聚偏氟乙烯/乙醇/结晶/晶型/形貌Key words
poly (vinylidene fluoride) (PVDF) / ethanol / crystallization / crystallization phase / morphology分类
化学化工引用本文复制引用
赵学娟,张军..聚偏氟乙烯在不同温度乙醇中的结晶行为[J].南京工业大学学报（自然科学版）,2013,35(4):17-20,4.基金项目
江苏省普通高校研究生科研创新计划(CXZZ12_0406) （CXZZ12_0406）
江苏高校优势学科建设工程(PAPD) （PAPD）
