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Issue 14, 2017
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Preparation, properties and formation mechanism of cellulose/polyvinyl alcohol bio-composite hydrogel membranes

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Abstract

In this study, novel cellulose/polyvinyl alcohol (PVA) composite hydrogel membranes were prepared by means of immersion-precipitation phase transformation, using the ionic liquid 1-butyl-3-methylimidazolium acetate ([C4mim]+Ac) as a solvent. The cellulose/PVA composites were characterized by UV-visible light absorption spectroscopy (UV), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction measurements (XRD) and scanning electron microscopy (SEM). The results revealed that a novel compact dual-network structure was formed between the cross-linked cellulose network and PVA. With an increase of cellulose in the composites, the tensile strengths of the composite hydrogel membranes were greatly increased as expected. As PVA was added, the swelling and water-absorbing properties of the cellulose/PVA hydrogels were significantly improved. In addition, the possible formation mechanism of the composite hydrogel was also discussed. It is believed that this is an effective method to prepare novel composite hydrogel materials.

Graphical abstract: Preparation, properties and formation mechanism of cellulose/polyvinyl alcohol bio-composite hydrogel membranes

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Publication details

The article was received on 14 Mar 2017, accepted on 31 May 2017 and first published on 31 May 2017


Article type: Paper
DOI: 10.1039/C7NJ00845G
Citation: New J. Chem., 2017,41, 6564-6573
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    Preparation, properties and formation mechanism of cellulose/polyvinyl alcohol bio-composite hydrogel membranes

    H. Peng, S. Wang, H. Xu and X. Hao, New J. Chem., 2017, 41, 6564
    DOI: 10.1039/C7NJ00845G

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