Poly(vinyl alcohol) (PVA) was structurally modified by the reaction of hydroxyl groups with 4-maleimidophenyl isocyanate (MPI). The substitution degree of the modified PVA was determined by 1H-NMR spectra and varied in the range 7.7 and 34.4%. Structures of polymers were confirmed by ATR-FTIR and 1H-NMR spectroscopy and properties were studied by thermal and mechanical analysis (dynamic mechanical analysis, differential scanning calorimetry, thermogravimetric analysis and stress-strain). By heating of modified PVA at 200°C, the glass transition temperature and modulus were improved.
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Găină et al. (2011) studied this question.
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