Synthesis of a co-cross-linked nanocomposite hydrogels from poly(methyl vinyl ether-co-maleic acid)-polyethylene glycol and nanofibrillated cellulose
This study demonstrates the preparation of a renewable and biocompatible co-cross-linked nanocomposite hydrogel from poly(methyl vinyl ether-co-maleic acid), poly(ethylene glycol) and nanofibrillated cellulose (NFC). The cross-linking reaction was favored by the formation of ester linkages as evidenced by Fourier transform infrared spectroscopy. The increase in gel fraction content of the treated NFC varied from 22 to 85 % which exhibited an increase in degree of chemical cross-linking to form a rigid network with the addition of varying amount of NFC (20–60 %). This increase in gel rigidity influenced gel swelling, showing relatively reduced water uptake ability above 40 % NFC. Rheological measurements indicated the formation of gels with superior mechanical properties.
KeywordsNFC PEG PMVEMA Nanocomposite Hydrogels
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