• Synthesis and Characterization of pH-sensitive and Self-oscillating IPN Hydrogel in a pH Oscillator
  • Wang L, Ren J, Zhang X, Yang X, Yang W
  • pH 진동계 안에서 pH 감응성 자기진동 IPN 하이드로젤의 합성과 분석
Abstract
A self-oscillating interpenetrating polymer network (IPN) poly(acrylic acid)/poly(ethylene glycol) (PAA/PEG) hydrogel was prepared by using radical polymerization with a two-step method. The IPN hydrogel was characterized by FTIR spectroscopy and morphological analysis. The results indicated that the chains of PEG and PAA twined to form porous structure which is beneficial to water molecules entering inside of the hydrogel. In addition, the pH-responsive behavior, salt sensitivity, swelling/de-swelling oscillatory behaviors and self-oscillation in a closed pH oscillator were also studied. The results showed that the prepared hydrogel exhibited pH-sensitivity, good swelling/de-swelling reversibility and excellent salt sensitivity. The self-oscillating behavior of swelling/de-swelling for the prepared hydrogel was caused by pH alteration coupled with the external media. This study may create a new possibility as biomaterial including new self-walking actuators and other related devices.

Keywords: PAA/PEG IPN hydrogel; reversibility; self-oscillation; pH-responsiveness

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2015; 39(3): 359-364

    Published online May 25, 2015

  • 10.7317/pk.2015.39.3.359
  • Received on Mar 14, 2014
  • Accepted on Dec 6, 2014