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Effect of PEG additive on morphology and performance of polysulfone membrane

Authors： ANYaxin, ZHANG Qifeng, ZHANG Suobo

Units： Key Laboratory of Polymer Ecomaterials,Changchun Institution of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

KeyWords： polysulfone; ultrafiltration membrane; additive

ClassificationCode：TB34

year,volume(issue):pagination： 2015,35(5):64-70

Abstract：

Polysulfone(PSF)membrane was prepared by using PSF/N-methyl-2-pyrrolidone (NMP)/poly(ethylene glycol) (PEG) castingsolution and water coagulant. Effects of the content and molecular weight of PEG on the morphology, the mean pore radius(r), porosity(ε), pure water flux(PWF) and contact angel(CA) of PSF membrane were systematically investigated. SEM images of the PSF membranes showed that the teardrop-shaped pores disappearedand the thickness of the sponge layer near the top surface of the membrane increased as the content or molecular weight of PEG additive increased,. As the content of PEG400 increased in the membrane dope solution, r increased firstly, then decreased, and finally increased again; εfirst increased slightly, and then increased sharply; the trend of PWF was consistent with that of r. As the molecular weight of PEG increased, r increased firstly, then decreased slightly, and then increased sharply, finally decreased sharply;ε increased, and then decreased sharply; the trend of PWF was consistent with that of r. The CA of PSF membrane decreased when PEG400 content increased (>=16.8%) or the molecular weight of PEG increased (>=2000).
KEY WORDS:

Funds：

国家重点基础研究发展计划（2015CB655302），国家自然科学基金（51203151

AuthorIntro：

安亚欣（1989），女，河北石家庄，硕士，研究实习员，从事高分子膜的制备研究

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