稀土固体超强酸SO_4^(2-)/TiO_2-Ce^(4+)直接法催化合成聚乳酸及其机理的研究

Research the mechanism of synthesis of poly(lactic acid) with direct condensation polymerization catalyzed by SO_4^(2-)/TiO_2-Ce^(4+)

对稀土固体超强酸SO_4^(2-)/TiO_2-Ce^(4+)催化剂直接法催化合成聚乳酸反应机理进行了研究,实验结果表明:SO_4^(2-)/TiO_2-Ce^(4+)直接法催化剂合成聚乳酸的聚合机理是酸性聚合,酸性越强所合成聚乳酸的分子量越高。

This article researched the mechanism of synthesis of poly（lactic acid） with direct condensation polymerization Catalyzed by SO4^2-/TiO2-Ce^4＋ , The experimental result indicated that：the mechanism of synthesis of polylactides with direct condensation polymerization catalyzed by SO4^2-/TiO2-Ce^4＋ is acidic polymerization, The acidity of catalyst stronger will synthesizes the higher molecular weight Polylactides.