Abstract
Endothermic physical processes and transition temperatures below 220°C of several binary and ternary copolymers of maleic anhydride with vinyl acetate, methyl methacry-late and/or styrene were studied by differential scanning calorimetry and infrared spectroscopy. To improve resolution of differential scanning calorimetry peaks and allow correct assignment of the chemical and physical processes in the studied temperature range, multiple heating-cooling or isothermal treatments were performed. The recycliza-tion of hydrolyzed maleic acid units to maleic anhydride units, occurring around 160–190°C, was confirmed by infrared spectra.
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Schedule a callMore From: International Journal of Polymer Analysis and Characterization
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