Effects of the structure and morphology of zinc glutarate on the fixation of carbon dioxide into polymer
Effects of the structure and morphology of zinc glutarate on the fixation of carbon dioxide into polymer
复制标题
DOI：
10.1002/pola.10452
复制
发表时间：
2002-11
期刊：
影响因子：
--
通讯作者：
Y. Meng;L. Du;S. C. Tiong;Q. Zhu;A. S. Hay
中科院分区：
文献类型：
--
作者：
Y. Meng;L. Du;S. C. Tiong;Q. Zhu;A. S. Hay
以不同纯度的氧化锌为原料，采用不同的搅拌方式合成了戊二酸锌。通过广角X射线衍射、透射电子显微镜和激光粒度分析仪技术测定了这些戊二酸锌的粒度和结构。结果表明，戊二酸锌的结晶度和结晶完整性是影响二氧化碳（CO2）和环氧丙烷（PO）共聚催化活性的关键因素。此外，具有小粒径的催化剂显着提高CO2和PO之间的共聚的产率。以合成的戊二酸锌为原料，以CO2和PO为原料合成了高分子量、分子结构规则的聚碳酸亚丙酯（PPC）。得到了160.4g聚合物/g催化剂的非常高的催化活性。核磁共振技术表明，PPC共聚物具有确切的交替共聚物结构。关联并讨论了催化剂的结晶度、粒径与催化活性的关系。© 2002 Wiley Periodicals，Inc.聚合物科学杂志A部分：聚合物化学40：3579-3591，2002年
Zinc glutarates were synthesized from zinc oxides with varying purities via different stirring routes. The particle size and structure of these zinc glutarates were determined by wide-angle X-ray diffraction, transmission electron microscopy, and the laser particle size analyzer technique. The results demonstrated that the crystallinity and crystalline perfectness of zinc glutarate are the crucial factors that affect the catalytic activity for the copolymerization of carbon dioxide (CO2) and propylene oxide (PO). Additionally, the catalyst with a small particle size dramatically increased the yield of the copolymerization between CO2 and PO. High-molecular-weight and regular molecular structure poly(propylene carbonate)s (PPC)s were obtained from CO2 and PO with the synthesized zinc glutarates. Very high catalytic activity of 160.4 g polymer/g catalyst was afforded. The NMR technique revealed that the PPC copolymer exhibits an exact alternating copolymer structure. The relationships between the crystallinity and the particle size of catalyst with the catalytic activity are correlated and discussed. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 3579–3591, 2002