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Biodegradable poly(N-isopropylacrylamide-co-N-maleylgelatin) hydrogels with adjustable swelling behavior

Authors
  • Xin, Feifei1
  • Sui, Meiyu1
  • Liu, Xisheng1
  • Zhao, Cong1
  • Yu, Yueqin1
  • 1 Qingdao University of Science and Technology, State Key Laboratory Base of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, 53 Zhengzhou Road, Qingdao, 266042, People’s Republic of China , Qingdao (China)
Type
Published Article
Journal
Colloid & Polymer Science
Publisher
Springer-Verlag
Publication Date
Mar 30, 2019
Volume
297
Issue
5
Pages
763–769
Identifiers
DOI: 10.1007/s00396-019-04498-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

This study describes the detailed investigation on dynamic swelling of biodegradable network system poly(N-isopropylacrylamide-co-N-maleylgelatin) P(NIPAAm-co-N-MAGEL) prepared by N-isopropylacrylamide (NIPAAm) and N-maleylgelatin (MAGEL) with N,N′-methylene bis(acrylamide) (BIS) as a cross-linking agent. Effects of MAGEL content on the swelling behavior were investigated. The results showed that the swelling kinetics were dependent on the content of MAGEL and the maximum swelling rate was observed at 30% content of MAGEL. The swelling process follows second-order kinetics, and the mechanism of water transport is pseudo-Fickian type of diffusion. Swelling kinetics under different concentrations of NaCl was also studied. The swelling rate decreased with increasing the concentration of NaCl. Graphical abstractThe swelling rate of P(NIPAAm-co-N-MAGEL) hydrogel can be tuned by MAGEL content and NaCl concentration.

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