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Binary phase solid‐state photopolymerization behavior of acrylate cryogels under different light sources
Author(s) -
Ali Safdar,
Shehzad Farooq Khurum,
Maitlo Inamullah,
Valiev Sultan,
Muhyodin Ghulam,
Nie 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.46686
Subject(s) - photopolymer , acrylate , materials science , methacrylate , polymerization , ethylene glycol , fourier transform infrared spectroscopy , polymer chemistry , acrylate polymer , photoinitiator , chemical engineering , scanning electron microscope , curing (chemistry) , copolymer , polymer , composite material , monomer , engineering
Two types of cryogels were obtained using 2‐hydroxyethyl acrylate (HEA) and 2‐hydroxyethyl methacrylate (HEMA) by homogeneous mixing with poly(ethylene glycol) diacrylate (PEGDA) as crosslinker at subzero temperature followed by photopolymerization with two different light initiation sources (high‐pressure Hg arc lamp and UV‐LED).The solution was frozen unidirectionally at −60 °C before polymerization and finally photopolymerized at the same temperature. The cryogels were characterized using photo‐DSC, UV–vis and Fourier transform infrared spectroscopy, and scanning electron microscopy techniques. The cryogels cured with an LED light showed a higher polymerization rate and better morphological characteristics than ones cured with a high‐pressure Hg arc. The water intake ratio of HEA/PEGDA was higher than HEMA/PEGDA for both curing sources. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46686.