Preparation of CO2-philic Pebax- based blend films: Studies on structure,interfacial interaction and morphology

To enhance the CO2-philicity of Pebax, films based on poly(ether-b-amide) with a Pebax trade name and its blends with vinyl acetate/ dibutyl maleate copolymer (P(VAc-co-DBM)) were prepared by solution casting method. Structure, interfacial interaction and morphology of prepared films were studied by FTIR, DSC and SEM respectively. SEM micrographs showed that blends are homogenous on the microscale. FTIR results indicated that hydrogen bonding interactions between Pebax phases change by adding of vinyl acetate- based additives. DSC results confirmed crystallinity and melting point decrease in both polyether and polyamide micro hases and decrease of glass transition temperature of polyether phase. DSC results also showed that discrete phase of P(VAc-co-DBM) can be formed by adding at least 20 wt%. Sumitta’s method proved that P(VAc-co-DBM) tends thermodynamically to localize in polyamide phase.

کلیدواژه ها:

Poly(ethylene oxide-b- amide 6) (P(VAc-co-PA6)) ، vinyl acetate- based polymer ، blend films