| 聚偏氟乙烯/偏氟乙烯-三氟氯乙烯共聚物的共混相容性及结晶性 |
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| 引用本文： | 李衡峰,谢玲,边宏,李俊. 聚偏氟乙烯/偏氟乙烯-三氟氯乙烯共聚物的共混相容性及结晶性[J]. 中南大学学报(自然科学版), 2012, 43(2): 455-459 |
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| 作者姓名： | 李衡峰 谢玲 边宏 李俊 |
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| 作者单位： | 1. 中南大学材料科学与工程学院,湖南长沙,410083;中南大学粉末冶金国家重点实验室,湖南长沙,410083
2. 中南大学材料科学与工程学院,湖南长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目(50703048) |
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| 摘 要： | 将聚偏氟乙烯(PVDF)颗粒与偏氟乙烯-三氟氯乙烯共聚物(P(VDF-CTFE))物理共混后采用溶液浇注的方法制备成共混薄膜.通过差示扫描量热仪、X线衍射、傅里叶变换红外光谱和扫描电镜等方法对PVDF/P(VDF-CTFE)共混薄膜的相容性、结晶行为及表面形貌进行分析.研究结果表明:PVDF/P(VDF-CTFE)体系中P(VDF-CTFE)作为一种无规共聚物在与PVDF共混时有一定的相容性,影响着PVDF的结晶-熔融热力学特征；PVDF/P(VDF-CTFE)共混结晶时,P(VDF-CTFE)的存在有利于形成β型晶体；PVDF均匀地分散在P(VDF-CTFE)相中,而且随着PVDF含量的减少,分散点的PVDF球晶数量越少.
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| 关 键 词： | 聚偏氟乙烯 偏氟乙烯-三氟氯乙烯共聚物 共混 相容性 结晶性 |
Miscibility and crystalline properties of poly(vinylidene fluoride)/poly(vinylidene fluoride-trifluorochloroethylene) blends |
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| LI Heng-feng , XIE Ling , BIAN Hong , LI Jun. Miscibility and crystalline properties of poly(vinylidene fluoride)/poly(vinylidene fluoride-trifluorochloroethylene) blends[J]. Journal of Central South University:Science and Technology, 2012, 43(2): 455-459 |
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| Authors: | LI Heng-feng XIE Ling BIAN Hong LI Jun |
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| Affiliation: | 1 (1.School of Materials Science and Engineering,Central South University,Changsha 410083,China; 2.State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China) |
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| Abstract: | The poly(vinylidene fluoride)/poly(vinylidene fluoride-chlorotrifluoro ethylene) blend membranes were prepared by a solution cast approach after physical blending.The miscibility,crystallization properties and surface morphology of the samples were investigated by differential scanning calorimetry,X-ray diffraction,Fourier transform infrared spectra and scanning electron microscopy.The results show that the random copolymer P(VDF-CTFE) in the PVDF/P(VDF-CTFE) blends has a certain miscibility with PVDF,which affects the crystal-melt thermodynamic characteristics of PVDF.In PVDF/P(VDF-CTFE) blend crystallization process,P(VDF-CTFE) is beneficial for the formation of β phase.PVDF is well distributed in the PVDF/P(VDF-CTFE) blends.The spherulite is reduced by decreasing the content of the PVDF. |
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| Keywords: | poly(vinylidene fluoride) poly(vinylidene fluoride-trifluorochloroethylene) blend miscibility crystalline property |
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