The Production of Poly(L-lactic acid) from 2-Steps Direct Polycondensation in 100 Kg Scale

Sommai Pivsa-Art; Sumonman Niamlang; Weraporn Pivsa-Art; Sorapong Pavasupree; Kiyoaki Ishimoto; Hitomi Ohara

doi:10.4028/www.scientific.net/AMR.418-420.1301

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420The Production of Poly(L-lactic acid) from 2-Steps...

The Production of Poly(L-lactic acid) from 2-Steps Direct Polycondensation in 100 Kg Scale

Abstract:

Synthesis of poly(L-lactic acid), PLLA, in a mass scale production using 2-steps direct polycondensation methods was investigated. One hundred kilogram of L-lactic acid was esterified in a designed reactor under reduced pressure at elevated temperature in the first step, followed solid state polymerization, SSP. The synthesized PLLA from both laboratory (5 g) and mass (100 L) scales show comparable melting temperature, Tm (151 – 172 oC) and molecular weight (Mn) (10,000 -32,000) at the similar polymerization conditions. The appearances of synthesized PLLA are yellow-white solid powder. The results show high potential to produce environmental friendly polymer, PLLA, using non-complex facilities process.

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Advanced Materials Research (Volumes 418-420)

Pages:

1301-1306

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.1301

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Online since:

December 2011

Authors:

Sommai Pivsa-Art, Sumonman Niamlang, Weraporn Pivsa-Art, Sorapong Pavasupree, Kiyoaki Ishimoto, Hitomi Ohara

Keywords:

2-Steps Direct Polycondensation, Mass Scale Production, Poly(L-lactic acid), Solid State Polymerization

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