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首页> 外文期刊>RSC Advances >Magnesium complexes bearing N,N-bidentate phenanthrene derivatives for the stereoselective ring-opening polymerization of rac-lactides
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Magnesium complexes bearing N,N-bidentate phenanthrene derivatives for the stereoselective ring-opening polymerization of rac-lactides

机译：含镁络合物，轴承N，N-二齿菲衍生物的丙烯衍生物，用于丙酸酯的立体选择性开环聚合

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摘要

Three unreported magnesium complexes (1: R - C6H5, 2: R - 2,6-Et2C6H3, 3: R - 2-(BuC6H4)-Bu-t) bearing N,N-bidentate phenanthrene derivatives derived from Schiff bases were synthesized. These complexes were characterized using H-1 and C-13 NMR spectroscopy and elemental analyses and employed for rac-lactide and L-lactide polymerization. Complex 1 showed the highest activity among these Mg complexes for the ring-opening polymerization (ROP) of L-lactide, and complex 3 showed the highest stereoselectivity for the ROP of rac-lactide, achieving partially heterotactic polylactide (PLA) with a P-r of 0.76. The polymerization kinetics utilizing 2 as a catalyst were researched in detail. The kinetics of the polymerization data revealed that the rate of polymerization was first-order with respect to monomer, and had an order of 0.97 with respect to catalyst. There was a linear relationship between the L-lactide conversion and the number-average molecular weight of PLA.
机译：合成了三种未报告的镁络合物（1：R - C6H5,2：R - 2,6-Et 2 C6H3,3：R - 2-（Buc6H4）-Bu-T）轴承N，N-二齿菲衍生物衍生自Shiff碱基的N-二齿菲衍生物。 这些配合物用H-1和C-13 NMR光谱和元素分析表征，用于用于RAC丙交酯和L-丙交酯聚合。 复合物1显示了L-丙交酯的开环聚合（ROP）的这些Mg络合物中的最高活性，并且复合物3显示了RAC-丙交酯的ROP的最高立体选择性，并且用PR实现了部分异等的聚酰胺（PLA） 0.76。 详细研究了利用2作为催化剂的聚合动力学。 聚合数据的动力学显示，聚合速率相对于单体是一流的，并且相对于催化剂具有0.97的顺序。 L-丙交酯转化与PLA的数均分子量之间存在线性关系。

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  • 来源
    《RSC Advances》 |2015年第1期|共8页
  • 作者

    Gao Bo; Zhao Dehai; Li Xiang; Cui Yuan; Duan Ranlong; Pang Xuan;

  • 作者单位

    Changchun Univ Sci &

    Technol Sch Mat Sci &

    Engn Changchun 130022 Peoples R China;

    Changchun Univ Sci &

    Technol Sch Mat Sci &

    Engn Changchun 130022 Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem Key Lab Polymer Ecomat Changchun 130022 Peoples R China;

    Changchun Univ Sci &

    Technol Sch Mat Sci &

    Engn Changchun 130022 Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem Key Lab Polymer Ecomat Changchun 130022 Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem Key Lab Polymer Ecomat Changchun 130022 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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