The structure and properties of the triblock copolymer HO-PLA-PEG-PLA-OH prepared by lacide (DL-LA) and polyethylene glycol(PEG
M=4000) with various composition ratios
were studied by FTIR spectroscopy
1H-NMR spectroscopy
dynamic mechanical analysis(DMA). The effect of temperature and pressure in processing on intrinsic viscosity of block copolymer was also studied. The experiment results indicated that the tensile strength and glass transition temperature decreased with the increasing of the content of PEG for block copolymer.The general properties of PLA were improved obviously by PEG.The properties of tri-block copolymer are controlled more easily than PLA polymer
SYNTHESIS AND CHARACTERIZATION OF AMPHIPHILIC TRIBLOCK COPOLYMERS PEG\|POLY(Nε-CBZ-LYSINE)-POLY(LACTIC ACID)
STUDY ON CHAIN EXTENTING AND MODIFICATION OF P(LA/SA) WITH 1,3-PBO
ELECTROCHEMICAL SYNTHESIS OF CONDUCTING COPOLYMER OF PYPYRROLE AND CAPPROLACTAM
聚乳酸/乙烯-醋酸乙烯酯共聚物共混物的形态与黏弹行为
ADSORPTION BEHAVIOR OF COLLAGEN ON THE SPINCOATED PLA SURFACE
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Key laboratory of Auxiliary Chemistry and Technology for Chemical Industry of Ministry of Education, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology