Affiliation:
1. Universiti Teknologi MARA
Abstract
In this study, L(+)-lactic acid (LLA) from cassava fermentation by Rhizopusoryzae NRRL 395 was used as monomer in polymerization through direct polycondensation reaction. HPLC analysis of the fermented product was carried out to confirm the presence of LLA, through the matching of retention time compared to the standard of LLA. The chemical compound in poly (L-lactic acid), PLLA was evaluated after polymerization through direct polycondensation of LLA at 180°C, with the presence of tin (II) 2-ethylhexanoate as catalyst. Fourier Transform Infrared Spectrometry (FTIR) was used to characterize the functional groups, which were ester carbonyl group (C=O and C―O―C), and C-H stretching of the methyl and methine groups (―CH3 and ―CH2) of the resulting PLLA.
Publisher
Trans Tech Publications, Ltd.
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