Binary phase solid‐state photopolymerization behavior of acrylate cryogels under different light sources. Issue 37 (14th June 2018)

• Record Type: Journal Article
• Authors: Ali, Safdar; Shehzad, Farooq Khurum; Maitlo, Inamullah; Valiev, Sultan; Muhyodin, Ghulam; Nie, Jun
• Is Part Of: Journal of applied polymer science. Volume 135:Issue 37(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-14
• Subjects: biomaterials -- biomedical applications -- biomimetic -- hydrophilic polymers -- photopolymerization; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.46686
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: 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. Abstract :