Morphology of polyvinylidene fluoride and its blend in thermally induced phase separation process

被引：81

作者：

Li, Xianfeng ^{[1
]}

Lu, Xiaolong ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Minist Educ, Key Lab Hollow Fiber Membrane Mat & Membrane Proc, Tianjin 300160, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2006年 / 101卷 / 05期

关键词：

polyvinylidene fluoride; morphology; thermally induced phase separation; blend;

D O I：

10.1002/app.23489

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyvinylidene fluoride (PVDF) and its blend films were prepared by melt-blending the binary mixture of PVDF/dibutyl phthalate (DBP) and the ternary mixture of PVDF/CaCO3/DBP in combination of TIPS. Their morphologies were characterized by scanning electron microscope depended on preparation condition, such as the diluent and CaCO3 weight fraction, and the cooling rate, and the crystallization information was also investigated by DSC. The results showed that CaCO3 influenced the morphology of PVDF in the TIPS process regardless of the cooling conditions, and the formation of the spherulitic morphology can be disturbed by CaCO3 at the quenching condition. The effect of CaCO3 weight fraction on the tensile strength of PVDF was measured, which indicated CaCO3 had a negative effect on PVDF tensile strength. (c) 2006 Wiley Periodicals, Inc.

引用

页码：2944 / 2952

页数：9

共 34 条

[1] Polysulfone-Aerosil composite membranes - Part 1. The influence of the addition of Aerosil on the formation process and membrane morphology [J].