在生物相容性催化剂亚水杨酸铋的存在下聚合 D,L-内酰胺

Plasticheskie massy Pub Date : 2024-01-11 DOI:10.35164/0554-2901-2023-11-12-3-5

A. A. Atamanova, K. T. Kalinin, A. P. Plakhov, A. A. Stupnikov, P. V. Dmitryakov, S. V. Korolev, N. G. Sedush

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引用次数: 0

摘要

在亚水杨酸铋 (III) 催化剂存在下，D,L-内酰胺在 160°C 下进行了批量聚合反应。在 160°C、催化剂浓度分别为 2500、5000 和 7500 ppm 的条件下，采用差示扫描量热法在等温模式下对反应动力学进行了研究。结果表明，该催化剂具有很高的活性：在此条件下，20-30 分钟内的平衡转化率达到 96%，生成的聚（D,L-内酰胺）分子量达到 118 kDa。

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Polymerization of D,L-lactide in the presence of biocompatible catalyst bismuth subsalicylate

Polymerization of D,L-lactide was performed in bulk at 160°C in the presence of bismuth (III) subsalicylate catalyst. Kinetics of the reaction was studied by differential scanning calorimetry in isothermal mode at 160°C and catalyst concentrations of 2500, 5000, and 7500 ppm. It was shown that the catalyst has a high activity: under this conditions an equilibrium conversion of 96% was achieved in 20–30 min, and the molecular weight of the resulting poly(D,L-lactide) reached 118 kDa.

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Plasticheskie massy

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