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Degradation of crystalline P(l-LA) and amorphous P(d,l-LA-co-l-LA 30/70) and P(d,l-LA 50/50). The reciprocal molecular weights measure the concentration of degradation products. P(l-LA) had slowest increase in reciprocal molecular weight as a function of time, indicating it degraded slowest compared to the other two amorphous materials.
