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Enhanced swelling and mechanical properties of P(AM-co-SMA) semi-IPN composite hydrogels by impregnation with PANI and MWNTs-COOH

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Abstract

A novel poly(acrylamide-co-sodium methacrylate)/polyaniline/carboxylfunctionalized multi-walled carbon nanotubes (P(AM-co-SMA)/PANI/MWCNTs-COOH) composite hydrogels with semi-interpenetrating networks (semi-IPN) was synthesized. Structural and morphological characterizations of the composite hydrogels revealed that a strong compatibility exists between P(AM-co-SMA) and lower PANI/MWNTs-COOH loadings. Measurements of swelling capability for the composite hydrogels indicated that with lower PANI and MWNTs-COOH loading incorporated into the P(AM-co-SMA) network, the composite hydrogels possessed better swelling capability, higher sensitivity to pH environments, good swelling reversibility, higher ultimate compressive strength and good strain recoverable ability. These excellent characteristics may primarily be attributed to effective dispersing of a suitable PANI/MWNTs-COOH loading into the matrix of the polymers, and the formation and weakening or disappearance of a repulsive force based on hydrogen bonds as well as the appearance of attractive forces regarding pole-pole interactions between PANI chains. The composite hydrogels are anticipated to be applied in drug controlled release and issue engineering fields.

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Authors and Affiliations

  1. Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an, 710062, Shaanxi, P. R. China

    Zhanqing Liu & Zupei Yang

  2. Laboratory of Regional Eco-Environment at the Intersection of Weihe River, Luohe River and Huanghe River of Shaanxi Province, School of Chemistry and Life Sciences, Wei Nan Teachers University, Weinan, 714000, Shaanxi, P. R. China

    Zhanqing Liu & Aigang Lu

  3. Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, 710062, Shaanxi, P. R. China

    Yanling Luo

Authors
  1. Zhanqing Liu
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  2. Aigang Lu
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  3. Zupei Yang
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  4. Yanling Luo
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Correspondence to Zupei Yang.

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Liu, Z., Lu, A., Yang, Z. et al. Enhanced swelling and mechanical properties of P(AM-co-SMA) semi-IPN composite hydrogels by impregnation with PANI and MWNTs-COOH. Macromol. Res. 21, 376–384 (2013). https://doi.org/10.1007/s13233-013-1024-7

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  • DOI: https://doi.org/10.1007/s13233-013-1024-7

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