Furanic-Aromatic Copolyesters by Interchange Reactions between Poly(ethylene terephthalate) and Poly[ethylene 5,5′-isopropylidene-bis(2-furoate)]
作者： Wided Kamoun , Slim Salhi , Brigitte Rousseau , Rachid El Gharbi , Alain Fradet
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摘要: Aromatic copolyesters containing bio-based furanic units in the main chain were obtained by ester-inter-change reaction between poly(ethylene terephthalate) (PET) and poly[ethylene 5,5'-isopropylidene-bis(2-furoate)] (PEF) at high temperatures bulk. Various synthesized using PET/PEF mass ratios ranging from 90:10 to 50:50 characterized 'H NMR, MALDI-TOF MS, DSC, TGA. block copolymers formed first stage of then slowly randomized. The degree randomness, determined was close 1 after 2 h reaction. randomization rate depended on nature concentration end-groups starting homopolyesters much faster when a low molar hydroxy-terminated PET reacted.
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