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Three component terpolymer and IPN hydrogels with response to stimuli

Alzari, Valeria and Ruiu, Andrea and Nuvoli, Daniele and Sanna, Roberta and Martinez, Javier Illescas and Appelhans, Dietmar and Voit, Brigitte and Zschoche, Stefan and Mariani, Alberto (2014) Three component terpolymer and IPN hydrogels with response to stimuli. Polymer, Vol. 55 (21), p. 5305-5313. ISSN 0032-3861. Article.

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DOI: 10.1016/j.polymer.2014.09.004

Abstract

Two different types of multi-stimuli-shrinking hydrogels were synthesized (IPNs and terpolymeric hydrogels) by properly polymerizing N-isopropylacrylamide, 2-hydroxyethyl methacrylate and 2-acrylamido-2-methylpropanesulfonic acid in various mutual ratios and different synthetic orders. Both classical (CP) and frontal (FP) polymerizations were used and the resulting material properties compared. The best compositions and synthetic routes were found and the swelling, morphological and thermal material properties were studied. The results show that some IPNs exhibit marked stimuli-shrinking properties while some terpolymers present an opposite behavior. IPNs swell more than terpolymers and show a sharper stimuli-response, with a larger swelling ratio variation. In addition, FP allowed obtaining samples with the same characteristic of CP materials, but with significant preparation advantages. It has been demonstrated that by varying monomer mutual ratio, synthetic technique (FP or CP) and structural architecture (terpolymers or IPNs), different materials having peculiar properties and characteristics can be obtained.

Item Type:Article
ID Code:10832
Status:Published
Refereed:Yes
Uncontrolled Keywords:Stimuli-responsive hydrogels, frontal polymerization, IPNs
Subjects:Area 03 - Scienze chimiche > CHIM/04 Chimica industriale
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:Elsevier
ISSN:0032-3861
Deposited On:09 Mar 2015 13:59

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