Melt/solid polycondensation of glycolic acid to obtain high-molecular- weight poly(glycolic acid)

K. Takahashi; I. Taniguchi; M. Miyamoto; Y. Kimura

doi:10.1016/S0032-3861(00)00282-2

Melt/solid polycondensation of glycolic acid to obtain high-molecular- weight poly(glycolic acid)

K. Takahashi, I. Taniguchi, M. Miyamoto, Y. Kimura

Research output: Contribution to journal › Article

55 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	8725-8728
Number of pages	4
Journal	polymer
Volume	41
Issue number	24
DOIs	https://doi.org/10.1016/S0032-3861(00)00282-2
Publication status	Published - Nov 2000
Externally published	Yes

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All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

Cite this

Takahashi, K., Taniguchi, I., Miyamoto, M., & Kimura, Y. (2000). Melt/solid polycondensation of glycolic acid to obtain high-molecular- weight poly(glycolic acid). polymer, 41(24), 8725-8728. https://doi.org/10.1016/S0032-3861(00)00282-2

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AU - Kimura, Y.

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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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10.1016/S0032-3861(00)00282-2