Abstract
A number of samples of poly(D,L-lactic acid) (PLA) with weight-average molecular weights Ṁw in the range 15,000-350,000 were prepared by a ring-opening polymerization. The molecular weight distributions (MWDs) of these samples were determined by gel permeation chromatography (GPC). The method involves a universal calibration of the columns on the basis of polystyrene standards and a rapid iteration algorithm leading to the establishment of the Mark-Houwink relationship. In addition, osmometry and viscometry data are presented. The effect of hydrolytic degradation on the MWD of two PLA samples was studied by GPC.
Original language | Undefined |
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Pages (from-to) | 197-208 |
Journal | Journal of Polymer Science: Polymer Chemistry Edition |
Volume | 21 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1983 |
Keywords
- IR-70784