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- W2373879423 abstract "To obtain better performance of polylactic acid,the polylactic acid block copolymer was synthesized via linear heating method with lactic acid,e-caprolactone and succinic anhydride.The block copolymers were chain-extended with IPDI,and characterized by viscosity-average molecular weight,FT-IR,1H-NMR,TGA and XRD.The FT-IR and 1H-NMR results showed that the block copolymers were synthesized successfully.The hydroxyl-terminated copolymers P(LA-CL) were synthesized first,and then by adding succinic anhydride the block copolymer was synthesized which was the highest molecular weight.Molecular weight of polymer was increased less after chain extension.TGA results showed that the thermal stability of copolymer P(LA-CL/SA) was lower than that of the PLA,and the P(LA-CL/SA) was amorphous material and its crystallinity was lower than that of PLA.The block copolymers have higher molecular weight,readily biodegradable and better flexibility than PLA." @default.
- W2373879423 created "2016-06-24" @default.
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- W2373879423 date "2011-01-01" @default.
- W2373879423 modified "2023-09-23" @default.
- W2373879423 title "Preparation and chain-extension of polylactic acid block copolymer" @default.
- W2373879423 hasPublicationYear "2011" @default.
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