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A solid-state mechanochemical processing,that is,pan-milling,was used to conduct the esterification of poly(vinyl alcohol) (PVA) with maleic anhydride (MA) through stress-induced reaction.FTIR spectrum study indicated the presence of ester linkages and olefinic double bonds in maleic anhydride cross-linked PVA.Thermal properties of the cross-linked product were characterized by DSC.The results showed its glass transition temperature was 20℃higher than the original linear PVA and the thermal stability was also improved.
A solid-state mechanochemical processing, that is, pan-milling, was used to conduct the esterification of poly (vinyl alcohol) (PVA) with maleic anhydride (MA) through stress- induced reaction. FTIR spectrum study shows the presence of ester linkages and olefinic double bonds in maleic anhydride cross-linked PVA. The properties of the cross-linked product were characterized by DSC. The results showed its glass transition temperature was 20 ° C higher than the original linear PVA and the thermal stability was also improved.