Structural changes of polylactic-acid (P
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M. F. Gonzalez; R. A. Ruseckaite; T. R. Cuadrado
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Article
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1999
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John Wiley and Sons
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English
โ 241 KB
Low molecular-weight polylactic acid (PLA) was obtained by direct polycondensation of a mixture of 95% L and 5% D-lactic acid isomers, without catalyst, at 195ยฐC. This polymer was used for the synthesis of microspheres by emulsion-solvent evaporation method. Gel Permeation Chromatography (GPC), X-ra