Crystalline polymorphism in poly(vinylidenefluoride) membranes

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• 作者：Zhaoliang Cui^a ; ^b ; Naser Tavajohi Hassankiadeh^a ; Yongbing Zhuang^a ; Enrico Drioli^a ; ^c ; ^{e.drioli@itm.cnr.it" class="auth_mail" title="E-mail the corresponding author} ; Young Moo Lee^a ; ^{ymlee@hanyang.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：ATBC ; acetyl tributyl citrate ; ATR ; attenuated total reflection ; CFE ; chlorofluoroethylene ; CNFs ; carbon nanofibers ; CNTs ; carbon nanotubes ; CO ; cyclohexanone ; CTAB ; cetyltrimethlammonium bromide ; DBP ; dibutyl phthalate ; DEP ; diethyl phthalate ; DFT ; density functional theory ; DMAc ; dimethyl acetamide ; DMF ; dimethyl formamide ; DMP ; dimethyl phthalate ; DMSO ; dimethyl sulfoxide ; DOP ; dioctyl phthalate ; DPK ; diphenyl ketone ; DSC ; differential scanning calorimetry ; EC ; ethylene carbonate ; FTIR ; Fouri
• 刊名：Progress in Polymer Science
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：51
• 期：Complete
• 页码：94-126
• 全文大小：7437 K

文摘

PVDF is widely employed in membrane processes. Its crystals have five different polymorphs, α, β, γ, δ, and ɛ forms. In the past decades, research has been focused on the properties and performances of PVDF membranes. However, the formation mechanisms of the various polymorphs and their different effects on membrane performance are still not clear. Therefore, overall clarification of, conclusions about, and outlook on the effects of PVDF polymorphism on membrane properties and performance are important topics for further research. This manuscript systematically summarizes the structures and properties of PVDF crystals with different polymorphs, discusses the mechanisms of formation and transformation methods, reviews the crystallization and applications of different PVDF polymorphs in membrane separation, and presents the outlook for applications in membrane operations.