Current Research in Chemistry1996-50522152-3385xAsian Network for Scientific Information10.3923/crc.2010.10.17BaimarkY. Srisa-ardM. PuntumchaiA. 1201021Terpolyesters of D, L-lactic acid (DLLA), Glycolic Acid (GA) and ε-caprolactone (CL), designed as PDLLGACL, were synthesized via direct polycondensation under reduced pressure at 160°C using tin(II) chloride dihydrate as a catalyst. The terpolyesters with different DLLA: GA: CL ratios were investigated. The appropriate polymerization time was 48 h that indicated from their percentage of yield and intrinsic viscosity. The number-average molecular weights from gel permeation chromatography curves of the polyesters were in the range of 6,600-7,900 g mol-1. The random monomer sequencing of co- and terpolyesters can be observed from the 1H- and 13C-NMR spectra. Glass transition temperatures of the polyesters were depended on their compositions and molecular weights.]]>Achmad, F., K. Yamane, S. Quan and T. Kokugan,2009151342350Baimark, Y. and R. Molloy,200516332337Baimark, Y., M. Srisa-ard, J. Threeprom, R. Molloy and W. Punyodom,200713819Chen, G.X., H.S. Kim, E.S. Kim and J.S. Yoon,200642468472Florczak, M., J. Libiszowski, J. Mosnacek, A. Duda and S. Penczek,20072813851391Hirata, M. and Y. Kimura,20084926562661Srisa-ard, M., R. Molloy, N. Molloy, J. Siripitayananon and M. Sriyai,200150891896Moon, S.I., C.W. Lee, I. Taniguchi, M. Miyamoto and Y. Kimura,20014250595062Saha, S.K. and H. Tsuji,2006291357368Takahashi, K., I. Taniguchi, M. Miyamoto and Y. Kimura,20004187258728Takasu, A., Y. Narukawa and T. Hirabayashi,20064452475253Yaoming, Z., Z. Ling and W. Zhaoyang,20072178182Zhao, Y.M., Z.Y. Wang, J. Wang, H.Z. Mai B. Yan and F. Yang,20049121432150