Effects of composition and transesterification catalysts on the physico-chemical and dynamic properties of PC/PET blends rich in PC |
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| Authors: | A Al-Jabareen S Illescas M LI Maspoch O O Santana |
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| Affiliation: | 1.Materials Engineering Department,AL-Quds University,East Jerusalem,Palestine;2.Centre Català del Plàstic,Universitat Politècnica de Catalunya (UPC),Terrassa,Spain |
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| Abstract: | Melt blending of polycarbonate (PC)/poly(ethylene terephthalate) (PET) rich in PC at absence/present of different type of
tranesterification catalysts was carried out by using reactive extrusion method. The thermal, dynamic, and morphological properties
were studied. It was found that all blends are formed by a PC matrix and a semicrystalline (12–20% of crystallinity) of PET
dispersed phase. The addition of a catalyst in the mixing process promotes a refined and homogeneous dispersion of PET, as
well as it enhances the dynamicmechanical behavior of PC/PET blends compared with PC. These effects are attributed to the
emulsifying effect of the PC–PET copolymer generated by transesterification. Additionally, this copolymer contributes to the
miscibility between phases as demonstrated by the glass transition (T
g) shift of PC phase and PET phase. |
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