Effects of nucleating agents on the morphologies and performances of poly(vinylidene fluoride) microporous membranes via thermally induced phase separation

2012 ◽  
Vol 128 (1) ◽  
pp. 836-844 ◽  
Author(s):  
Min Liu ◽  
Dong-Gen Chen ◽  
Zhen-Liang Xu ◽  
Yong-Ming Wei ◽  
Meng Tong
Keyword(s):  
Phase Separation ◽  
Vinylidene Fluoride ◽  
Nucleating Agents ◽  
Microporous Membranes ◽  
Thermally Induced Phase Separation ◽  
Thermally Induced ◽  
Poly Vinylidene Fluoride

Nonisothermal Crystallization Behavior of Poly(vinylidenefluoride)/Polysulfone/Diethylene Glycol Dibenzoate/Dibutyl Phthalate System via Thermally Induced Phase Separation

2015 ◽  
Vol 1120-1121 ◽  
pp. 581-585
Author(s):  
Jing Zhang ◽  
Lu Qi ◽  
Zhen Yu Cui
Keyword(s):  
Phase Separation ◽  
Diethylene Glycol ◽  
Crystallization Behavior ◽  
Dibutyl Phthalate ◽  
Vinylidene Fluoride ◽  
Thermally Induced Phase Separation ◽  
Scanning Calorimetry ◽  
Nonisothermal Crystallization ◽  
Thermally Induced ◽  
Poly Vinylidene Fluoride

Differential scanning calorimetry (DSC) measurement is used to investigate the nonisothermal crystallization behavior of poly (vinylidene fluoride) (PVDF)/polysulfone (PSF)/diethylene glycol dibenzoate (DEDB)/dibutyl phthalate (DBP) system via solid-liquid (S-L) phase separation during a thermally induced phase separation process. The effect of benzene ring in PSF on PVDF crystallization for PVDF/PSF/DEDB/DBP system is investigated. It is found that the Ozawa model can describe nonisothermal crystallization behavior of PVDF/PSF/DEDB/DBP system in a certain crystallization temperature range. Jeziorny method indicates that the secondary crystallization of PVDF exists in the process of nonisothermal crystallization and is enhanced by the increase of cooling rate.

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