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| Effects of Additives on Structure and Performance of Polyacrylonitrile Membrane |
| WANG Hui1, 2, CUI Mengbing1, 2, YAN Dongdong1, CHEN Gairong1, 2
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1 College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003;
2 Nano Carbon-Modified Membrane Technology Engineering Laboratory of Henan Province, Xinxiang 453003 |
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Abstract Polyacrylonitrile membranes were prepared by phase-inversion method. Polyvinylpyrrolidone (PVP-K30, PVP-K90), polyethylene glycol (PEG-2000, PEG-6000), small organic molecule glycol and inorganic salt lithium chloride (LiCl) were used as additives. The mass fraction of the additive was 3 wt%. The surface and sectional structure, water flux, porosity, water contact angle and BSA rejection of the polyacrylonitrile membranes were studied. The results showed that the polyacrylonitrile membrane with PEG-2000 had many large pores, the sectional structure was sponge-like. It had highest water flux value and porosity, which were 436 L/(m2·h) and 86%, respectively. The water flux value of the membrane with glycol was low, but the rejection rate of BSA had a highest value of 93%. The membranes with PVP and PEG showed good hydrophilicity, the lowest value of contact angle was 68°.
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Published: 25 February 2018
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2018, Vol. 32 
