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Characterization of acrylic acid‐grafted PP membranes prepared by plasma‐induced graft polymerization
Author(s) -
Choi EunYoung,
Moon SeungHyeon
Publication year - 2007
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.26421
Subject(s) - membrane , polymer chemistry , microporous material , grafting , acrylic acid , fourier transform infrared spectroscopy , materials science , polymerization , chemical engineering , nuclear chemistry , chemistry , copolymer , polymer , composite material , biochemistry , engineering
Acrylic acid (AA)‐ g ‐polypropylene (PP) membranes were prepared by grafting AA on to a microporous PP membrane via plasma‐induced graft polymerization. The grafting of AA to the PP membrane was investigated using Fourier transform infrared spectroscopy (FTIR). Pore‐filling of the membranes was confirmed by field emission‐scanning electron microscopy (FESEM) and energy dispersing X‐ray (EDX). Ion exchange capacity (IEC), membrane electric resistance, transport number and water content were measured and analyzed as a function of grafting reaction time. The prepared AA‐ g ‐PP membranes showed moderate electrochemical properties as a cation‐exchange membrane. In particular, membranes with a degree of grafting of 155% showed good electrical properties, with an IEC of 2.77 mmol/g dry membrane, an electric resistance of 0.4 Ω cm 2 and a transport number of 0.96. Chronopotentiometric measurements indicated that AA‐ g ‐PP membranes, with a high IEC had a sufficient conducting region in the membrane. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007