Rahmayetty, Rahmayetty and Sukirno, Sukirno and Prasetya, Bambang and Gozan, Misri (2017) Artikel_Synthesis and characterization of L-lactide and polylactic acid (PLA) from L-lactic acid for Biomedical Application. AIP Conference Proceedings. ISSN Online ISSN 1551-7616; Print ISSN 0094-243X

Text 6. Synthesis and characterization of L-lactide and polylactic acid (PLA) from L-lactic acid.pdf - Published Version Download (1MB)

Abstract

Lactide is the monomer for the polymer polylactic acid (PLA) from lactic acid through polycondensation and depolymerization process. The properties of PLA strongly depend on the quality of the lactide monomer from which it is synthesized. Optical purity of lactide produced in depolymerization process confirmed to be L-lactide. The highest yield of crude lactide was 38.5% at temperature 210 °C with average molecular weight (Mn) of oligomer was 2389. Ring opening polymerization of lactide using Candida rugosa lipase as biocatalyst to PLLA synthesis has been achieved to generate useful biomedical materials free from heavy metal.

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