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Tính chất của copolyme trên cơ sở polylactic axit ghép chitosan

Thái Hoàng, Vũ Mạnh Tuấn, Nguyễn Thị Thu Trang, Nguyễn Thúy Chinh

Abstract


This study expresses the preparation and characterization of polylactic acid graft chitosan copolymer (PLA-g-CS) based on the copolymerization using the initiator and crosslink agent by free radical mechanism. The Fourier Infrared Spectra (FTIR) of PLA-g-CS copolymer shows that PLA and CS were successfully grafted. The thermal stability of PLA-g-CS copolymer is enhanced due to the formation of hyper-crosslinked structure during the copolymerization process. The output of copolymerization reaction was calculated according to the Thermo Gravimetric Analysis (TGA) method. The degradability of PLA-g-CS copolymer was also investigated by the weight loss of copolymers and the FESEM images of those samples that were immersed in solutions with different pH values.


Keywords


Polylactic acid, chitosan, hexadiol diacrylate

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