Chemical Exchange Reactions in Blends of the Biodegradable Polyester with poly(hydroxy ether of bisphenol-A)

Chean Cheng Su; Chern Hwa Chen; Neng Lang Shih; Yin Shuo Li

doi:10.4028/www.scientific.net/AMR.953-954.1246

Paper Titles

Spontaneous Formation of CTAB/SDBS Vesicles
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Spontaneous Formation of CTAB/SLS Vesicles
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Stability of Pyrolysis Oil-Water Emulsion
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Synthesis of Dimethyl Carbonate over Activated Carbon Supported Cu Based Catalysts
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Chemical Exchange Reactions in Blends of the Biodegradable Polyester with poly(hydroxy ether of bisphenol-A)
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Modeling of a Ten-Particle Char Cluster Interactive Combustion
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The Investigation on Fragmentation Behavior of Lignite Coal during Fluidized Bed Pyrolysis
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The Progress of Catalyst for Cyclohexane Dehydrogenation Processes
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Thermodynamic Analysis and Optimization for the Coal-Based Clean Liquid Fuel Synthesis Process
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 953-954Chemical Exchange Reactions in Blends of the...

Chemical Exchange Reactions in Blends of the Biodegradable Polyester with poly(hydroxy ether of bisphenol-A)

Abstract:

Compatibilization via transreactions in blends of poly (butylene succinate-co-butylene terephthalate) [P(BS-co-BT)] with poly (hydroxy ether of bisphenol-A) (phenoxy) were investigated. Analyses were based on characterization using differential scanning calorimetry (DSC) and solid-state nuclear magnetic resonance (NMR). They revealed that the P(BS-co-BT)/phenoxy blend had a phase morphology that could be homogenized only following annealing at high temperatures. As-blended P(BS-co-BT)/phenoxy (50/50 composition) exhibited immiscible phases with two distinct T_gs, but the initially phase separated blends finally merged to form a homogeneous phase with a single T_g upon heating and annealing for 60 min at 280 °C. Chemical exchange reactions upon heat-annealing were likely to have caused the phase homogenization in the P(BS-co-BT)/phenoxy blend. NMR was performed on blend samples before and after they were heated to 280 °C, but the similarity of bonds made obtaining straight results difficult. Results of this study demonstrate phase homogenization can be brought only upon heat-annealing in the P(BS-co-BT)/phenoxy blend.