Preparation and microstructural analysis of poly(ethylene oxide) comb-type grafted poly(N-isopropyl acrylamide) hydrogels crosslinked by poly(ε-caprolactone)

Lei Miao, Mangeng Lu, Chaolong Yang, Yunfei Zhang, Tengfei Shen, Jianying Ma

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Poly(N-isopropyl acrylamide) (PNIPAAm)-graft-poly(ethylene oxide) (PEO) hydrogels crosslinked by poly(ε-caprolactone) diacrylate were prepared, and their microstructures were investigated. The swelling/deswelling kinetics and compression strength were measured. The relationship between the structure and properties of hydrogel are discussed. It was found that the PEO comb-type grafted structure reduced the thermosensitivity and increased the compression strength. The addition of poly(ε-caprolactone) (PCL) accelerated the deswelling rate of the hydrogels. Meanwhile, the entanglement of PCL chains restrained the further swelling of the network of gels. The PCL crosslinking agent and PEO comb-type grafted structure made the behavior of the hydrogels deviate from the rubber elasticity equations.

Original languageEnglish
Pages (from-to)275-282
Number of pages8
JournalJournal of Applied Polymer Science
Volume128
Issue number1
DOIs
Publication statusPublished - 2013 Apr 5

Keywords

  • grafting
  • hydrogels
  • hydrophilic polymers

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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