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加拿大polymer source POLY(STYRENE)-B-POLY(LACTIDE) P9028-SLA
Poly(styrene-b-lactide) is prepared by living anionic polymerization in sequential addition of styrene followed by lactide monomer or by taking the OH end functionalized polystyrene and using co-ordination polymerization process. The scheme of the reaction is illustrated below:
The block polymer was analyzed by size exclusion chromatography (SEC) to estimate the molecular weight and polydispersity index (PDI). Further, the copolymer composition was calculated from 1H-NMR spectroscopy by comparing the peak area of the polystyrene protons at
0.05
0.00
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Ve (ml)
about 6.3-7.2 ppm with the lactide protons at 5.2 ppm. Copolymer PDI was determined by SEC.
Solubility:
Poly(styrene-b-lactide) is soluble in chloroform, THF, and toluene.
