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Preparation of bi‐continuous poly(acrylonitrile‐ co ‐methyl acrylate) microporous membranes by a thermally induced phase separation method
Author(s) -
Tan Linli,
Han Na,
Zhang Longfei,
Qian Yongqiang,
Zhang Xingxiang,
Cui Zhenyu,
Cai Jun
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46173
Subject(s) - membrane , materials science , chemical engineering , microporous material , polymer chemistry , acrylonitrile , methyl acrylate , diluent , copolymer , porosity , phase (matter) , polymer , composite material , nuclear chemistry , chemistry , organic chemistry , biochemistry , engineering
ABSTRACT Poly(acrylonitrile‐ co ‐methyl acrylate) [P(AN‐MA)] flat microfiltration membranes were successfully prepared via the thermally induced phase separation (TIPS) method, by using low polar caprolactam (CPL) and methoxypolyethylene glycol 550 (MPEG 550) as the mixed diluent. In this work, P(AN‐MA) membranes exhibit bi‐continuous networks, porous surfaces, high porosity, and big pore size, when membrane fabricated from a high MPEG 550 content, low P(AN‐MA) concentration, and small cooling rate, it can be dry state preservation and do not need to be impregnated by any solvent. When the ternary system was composed of 15 wt % P(AN‐MA), 12.5 wt % CPL, and 87.5 wt % MPEG 550, formed at 25 °C air bath, membrane has the highest water flux of 4420 L m −2 h −1 . The obtained P(AN‐AN) membrane displays a high carbonic black ink rejection ranging from 83.7 to 98.5 wt %. Moreover, P(AN‐MA) polymer not only retains the advantages of PAN but also reduces the polar component from 16.2 to 10.77 MPa 0.5. It can be used membrane matrix to obtain pore structure and excellent mechanical property membrane via TIPS. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46173.