Abstract

Sanjay Kumar Singh, Prashant Anthony and Abhishek Chowdhury

DOI : http://dx.doi.org/10.13005/ojc/3404036

Biodegradable polymeric materials derived from renewable resources have attracted tremendous attention in different application. Polylactic acid (PLA) is one of the most useful biodegradable polymers. It is difficult to synthesize high molecular weight polylactic acid by direct polycondensation. The present work describes the synthesis of high molecular weight PLA by varying the duration of reaction and changing the sequence of catalyst addition. Binary catalyst used was SnCl2.2H2O/maleic anhydride and p-toluene sulfonic acid. PLA with molecular weight (6.503X105) was obtained in 50 hours. FTIR, H1 and 13C NMR ascertained the structure of synthesized PLA whereas GPC was used for determining molecular weight.

Characterization by FTIR; GPC; H1-NMR; Polylactic acid Synthesis; 13C-NMR

[ View HTML Full Text]