TY - JOUR
T1 - Melt/solid polycondensation of glycolic acid to obtain high-molecular- weight poly(glycolic acid)
AU - Takahashi, K.
AU - Taniguchi, I.
AU - Miyamoto, M.
AU - Kimura, Y.
N1 - Funding Information:
This work was partly supported by a Grant-in-aid for Scientific Research on Priority Area, “Sustainable Biodegradable Plastics”, No. 11217210 (1999) from the Ministry of Education, Science, Sports and Culture (Japan).
PY - 2000/11
Y1 - 2000/11
N2 - Bulk polycondensation of glycolic acid (GA) was studied to obtain high- molecular-weight poly(glycolic acid) (PGA). At first, a solid oligocondensate was prepared by melt-polycondensation of GA at 190°C, and then it was subjected to solid-state polycondensation at the same temperature to increase the molecular weight. After the catalyst screening, zinc acetate dihydrate was discovered to be the best catalyst. The weight-average molecular weight of PGA reached 91,000, which was at the same level with that of PGA prepared by the conventional ring-opening polymerization of glycolide. This process can afford a facile route to large-scale synthesis of PGA. (C) 2000 Elsevier Science Ltd.
AB - Bulk polycondensation of glycolic acid (GA) was studied to obtain high- molecular-weight poly(glycolic acid) (PGA). At first, a solid oligocondensate was prepared by melt-polycondensation of GA at 190°C, and then it was subjected to solid-state polycondensation at the same temperature to increase the molecular weight. After the catalyst screening, zinc acetate dihydrate was discovered to be the best catalyst. The weight-average molecular weight of PGA reached 91,000, which was at the same level with that of PGA prepared by the conventional ring-opening polymerization of glycolide. This process can afford a facile route to large-scale synthesis of PGA. (C) 2000 Elsevier Science Ltd.
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U2 - 10.1016/S0032-3861(00)00282-2
DO - 10.1016/S0032-3861(00)00282-2
M3 - Article
AN - SCOPUS:0342322088
VL - 41
SP - 8725
EP - 8728
JO - Polymer
JF - Polymer
SN - 0032-3861
IS - 24
ER -