Preparation, characterization, and properties of EVA preirradiation grafted NIPAAm

• Published in: Journal of applied polymer science Vol. 62; no. 10; pp. 1529 - 1535
• Main Authors: Pu, Hongting, Ding, Zhongli, Ma, Zueteh
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc., A Wiley Company 05.12.1996; Wiley
• Subjects: Applied sciences; Copolymerization; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; Surface reaction; Graft copolymer; Liquid absorption; Temperature effect; Electron beam; Mechanical properties; Acrylamide derivative copolymer; Experimental study; Grafting; Optimization; EVA; Morphology; Property structure relationship; Pretreatment
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/(SICI)1097-4628(19961205)62:10<1529::AID-APP5>3.0.CO;2-Q

An ethyl–vinyl acetate copolymer (EVA) preirradiation‐grafted with N‐isopropylacrylamide (NIPAAm) was propared. Various methods which can be used to control the grafting reaction are described. DSC and TMA were employed to characterize the surface thermosensitivity of the graft copolymer. It is indicated that the surface of EVA grafted with NIPAAm shows thermosensitivity similar to a partially crosslinked poly‐NIPAAm (PNIPAAm) gel. The response to the change of temperature through the lower critical solution temperature (LCST) of the graft was swifter than that of the PNIPAAm, gel. SEM revealed a micropore structure in the surface layer of the sample. DSC was also used to analyze the water state in the surface layer of the sample. © 1996 John Wiley & Sons, Inc.