膜科学与技术

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Structure and performance of microporous PVC membranes prepared via thermally induced phase separation

Authors： MIN Ying, ZHANG Chunfang, BAI Yunxiang, SUN Yuping, GU Jin*

Units： School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China

KeyWords： polyvinyl chloride; thermally induced phase separation; microporous membranes

ClassificationCode：TQ027.3

year,volume(issue):pagination： 2016,36(6):36-41

Abstract：

Microporous polyvinyl chloride (PVC) membranes were prepared via thermally induced phase separation (TIPS) process using diphenyl ether (DPE) as diluent. In order to understand the influences of polymer concentration and cooling rate on phase behavior and membrane structure, the thermodynamic and kinetics properties of membrane formation process were investigated by optical microscope. The resulting PVC microporous membranes presented symmetric cellular structure, which is typical results of liquid-liquid phase separation. The decrease of polymer concentration and cooling rate facilitated the growth of droplet phase and increased the size of droplets. The results matched with the pore size of the obtained PVC membranes. Correspondingly, PVC membranes possessed higher water flux and worse mechanical properties when lower polymer concentration and higher cooling bath temperature were submitted to experiment.

Funds：

基金项目：国家自然基金项目（21576114）

AuthorIntro：

第一作者简介：闵瑛（1991-），湖北黄石市人，硕士生，主要从事膜材料制备及应用研究. *通讯作者，E-mail: gujin@jiangnan.edu.cn

Reference：

[1] 江苏省氯碱工业协会. 中国聚氯乙烯产业可持续健康发展讨论[J]. 江苏氯碱, 2012, 5, 1-3.
[2] Bodzek M, Konieczny K. The influence of molecular mass of poly(vinyl chloride) on the structure and transport characteristics of ultrafiltration membranes[J]. J Membr Sci, 1991, 61, 131-156.
[3] 杨建, 赵文明, 王晓琳. 聚偏氟乙烯-稀释剂间介电常数差异对热致相分离法制膜微观结构的影响[J]. 高等化学学报, 2007, 12, 2413-2417.
[4] Yoon J, Lesser A J, McCarthy T J. Locally anisotropic porous materials from polyethylene and crystallizable diluents[J]. Macromolecules, 2009, 42(22), 8827-8834.
[5] 王刚, 林亚凯, 王晓琳. 混合稀释剂对热致相分离法制备等规聚丙烯微孔膜的影响[J]. 膜科学与技术, 2007, 27(6), 42-51.
[6] Shang M X, Matsuyama H, Teramoto M, et al. Preparation and membrane performance of poly(ethylene-co-vinyl alcohol) hollow fiber membrane via thermally induced phase separation[J]. Polymer, 2003, 44(24), 7441-7447.
[7] 张昊, 李香玲, 胡晓宇. TIPS法力化学改性聚氯乙烯膜研究[J]. 功能材料, 2012, 24(43), 3410-3416.
[8] McGuire K S, Laxminarayan A, Lloyd D R. Kinetics of droplet growth in liquid-liquid phase separation of polymer-diluent systems: experimental results[J]. Polymer, 1995, 36(26), 4951-4960.
[9] Li J F, Xu Z L, Yang H. Microporous polyethersulfone membranes prepared under the combined precipitation condition with non-solvent additives[J]. Polym Advan Technol, 2008, 19(4), 251-257.
[10] Song S W, Torkelson J M. Coarsening effect on microstructure formation in isopycnic polymer solutions and membranes produced via thermally induced phase separation[J]. Macromolecules, 1994, 27(22), 6389-6397.
[11] Qiu Y R, Matsuyama H, Gao G Y, et al. Effects of diluent molecular weight on the performance of hydrophilic poly(vinyl butyral)/Pluronic F127 blend hollow fiber membrane via thermally induced phase separation[J]. J Membr Sci, 2009, 338(1-2), 128-134.

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