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Membranes 2014, 4(2), 243-256; doi:10.3390/membranes4020243
Article

The Effect of Chain Structures on the Crystallization Behavior and Membrane Formation of Poly(Vinylidene Fluoride) Copolymers

1,2,* , 1
 and 1,*
Received: 12 March 2014; in revised form: 23 April 2014 / Accepted: 13 May 2014 / Published: 19 May 2014
(This article belongs to the Special Issue Selected Papers from AMS8 Conference (July 2013, Xi’an, China))
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Abstract: The crystallization behaviors of two copolymers of PVDF were studied, and the effect of copolymerized chains on the crystallization behavior was investigated. The results indicated that both copolymers had a lowered crystallization temperature and crystallinity. The crystallization rate was improved by the copolymer with symmetrical units in PVDF chains, but hindered by asymmetrical units, compared with the neat PVDF. The symmetrical units in PVDF chains favored the β-crystals with fiber-like structures. According to the solubility parameter rule, methyl salicylate (MS) can be chosen as a diluent for PVDF copolymers. Both diluted systems had liquid-liquid (L-L) regions in the phase diagrams, which was due to the lowered crystallization temperature.
Keywords: poly(vinylidene fluoride) copolymers; membrane; thermally-induced phase separation poly(vinylidene fluoride) copolymers; membrane; thermally-induced phase separation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Ma, W.; Yuan, H.; Wang, X. The Effect of Chain Structures on the Crystallization Behavior and Membrane Formation of Poly(Vinylidene Fluoride) Copolymers. Membranes 2014, 4, 243-256.

AMA Style

Ma W, Yuan H, Wang X. The Effect of Chain Structures on the Crystallization Behavior and Membrane Formation of Poly(Vinylidene Fluoride) Copolymers. Membranes. 2014; 4(2):243-256.

Chicago/Turabian Style

Ma, Wenzhong; Yuan, Haoge; Wang, Xiaolin. 2014. "The Effect of Chain Structures on the Crystallization Behavior and Membrane Formation of Poly(Vinylidene Fluoride) Copolymers." Membranes 4, no. 2: 243-256.


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