Membrane Science and Technology

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Hydrophilic Modification of Polyvinylidene fluoride Blood Separate Membrane

Authors： ZHANG Qing-lei1, LU Xiao-long1, YANG Shi-chun1,2, WU Chun-rui1,LIU Juan-juan1

Units： 1. State Key Laboratory of Hollow Fiber Membrane Materials and Membrane Process, Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin,300160,China ;2.Tianjin Agricultural University Tianjin 300160, China

KeyWords： PVDF; acetalization; hydrophilic; protein adsorption

ClassificationCode：R318.16;TQ028.8

year,volume(issue):pagination： 2012, 32(4):17-20

Abstract：

Using the acetalization of alcohols and aldehydes to prepare enduring hydrophilic PVDF hollow fiber membrane. Reaction can produce branching or network formation of non-water-soluble hydrophilic macromolecules. According to the NTU of solution, we determine the solubility of crosslinks. The system is identified as the acetalization of glutaraldehyde with polyvinyl alcohol (PVA, 1750±50) in the solvent DMAc. The catalyst is concentrated hydrochloric acid (36.5,wt.%).Reaction temperature is 70℃ and reaction time is 30min . Modifications of PVDF blood separate membrane significantly increase hydrophilicity and water flux, decrease protein adsorption and have better chemical stability. The contact angle and the protein adsorption of the membrane material are reduced while the hydrophilic performance enhanced with the increasing of PVA concentration.

Funds：

国家自然科学基金（21176188）；天津市重点基金课题（09JCZDJC26300）

AuthorIntro：

张庆磊 (1981?)，男，山东泰安人，硕士，师承吕晓龙教授从事膜材料在生物医学领域的应用。

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