Paper Title:
Synthesis and Characterization of PLA-Based Aliphatic-Aromatic Copolyesters: Effect of Diols
  Abstract

PLA-based aliphatic aromatic copolyesters have been synthesized and characterized in order to incorporate the degradability of PLA and good mechanical properties of aromatic species. Synthesis of the copolymers was conducted by polycondensation of lactic acid with dimethyl terephthalate (DMT) and various diols using stannous(II) octoate as a catalyst. Three types of diols with different methylene lengths were employed, i.e., ethylene glycol (EG), propylene glycol (PG) and 1, 4-butanediol (BD). Effects of diols and comonomer molar ratio on the extent of polycondensation reaction and molecular weight of the resulting copolymers were investigated. Diacids and diol ratios of L-lactic acid (LLA), dimethyl terephthalate (DMT) and diol of 1/1/2, 1/2/4 and 2/1/2 were employed. Characterization of chemical structure, molecular weight and thermal and physical properties of the resulting copolymers were conducted by FTIR, NMR, and DSC.

  Info
Periodical
Advanced Materials Research (Volumes 55-57)
Main Theme
Edited by
Tawee Tunkasiri
Pages
785-788
DOI
10.4028/www.scientific.net/AMR.55-57.785
Citation
M. Namkajorn, A. Petchsuk, M. Opaprakasit, P. Opaprakasit, "Synthesis and Characterization of PLA-Based Aliphatic-Aromatic Copolyesters: Effect of Diols", Advanced Materials Research, Vols. 55-57, pp. 785-788, 2008
Online since
August 2008
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