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BEZWADA BIOMEDICAL LLC Poly(L-lactide), viscosity 1.0 to 2.0 dl/g, 5.0 GM
Supplier: BEZWADA BIOMEDICAL LLC 3100
Poly(L(-)-lactide) and poly(D(+) lactide homopolymers are crystallizable and exhibit melting transitions between 170 and 182oC. Poly(L(-)-lactide) is a semi-crystalline (~37% crystallinity) polymer with a melting point of 175-178°C and a glass-transition temperature of 60-65°C. It has a high tensile strength and low elongation, and it has a high modulus that makes it suitable for load-bearing applications as in sutures or absorbable orthopedic devices. In contrast to L(-)-PLA, poly(dl-lactide) (DL-PLA) is an amorphous polymer, comprised of both isomeric forms of lactide distributed in a random manner. This results in lower tensile strength, higher elongation, and a much more rapid degradation time for DL-PLA in comparison to L(-)-PLA, making it more attractive as a carrier for controlled release of drugs. The complete absorption of L(-)-PLA requires more than 2 years and is much slower than that of DL-PLA.
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