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Synthesis of controlled thermoresponsive PET track‐etched membranes by ATRP method
Author(s) -
Pan Kai,
Ren Ruimin,
Dan Yi,
Cao Bing
Publication year - 2011
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.34265
Subject(s) - membrane , atom transfer radical polymerization , materials science , polymer chemistry , contact angle , chemical engineering , polymer , polymerization , grafting , fourier transform infrared spectroscopy , permeability (electromagnetism) , radical polymerization , chemistry , composite material , engineering , biochemistry
Abstract Controlled thermoresponsive PET track‐etched membranes were synthesized by grafting N ‐isopropylacrylamide (NIPAAm) onto the membrane surface via atom transfer radical polymerization (ATRP). The initial measurements were made to determine the anchoring of ATRP initiator on PET membrane surface. Thereafter, polymerization was carried out to control the mass of polymer by controlling reaction time grafted from the membrane surface and, ATR‐FTIR, grafting degree measurements, water contact angle measurements, TGA, and SEM were used to characterize changes in the chemical functionality, surface and pore morphology of membranes as a result of modification. Water flux measurements were used to evaluate the thermoresponsive capacity of grafted membranes. The results show the grafted PET track‐etched membranes exhibit rapid and reversible response of permeability to environmental temperature, and its permeability could be controlled by controlling polymerization time using ATRP method. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.