在凝胶色谱（GPC）测试高聚物分子量和分子量分布的实验基础上,建立了一个共聚合多分散体系的 Monte Carlo计算机仿真算法,模拟共聚合过程中每个单体链节的形成,记录每条长度不等的高分子链的链节结构和微观序列分布.应用于2,2-二甲基...在凝胶色谱（GPC）测试高聚物分子量和分子量分布的实验基础上,建立了一个共聚合多分散体系的 Monte Carlo计算机仿真算法,模拟共聚合过程中每个单体链节的形成,记录每条长度不等的高分子链的链节结构和微观序列分布.应用于2,2-二甲基三亚甲基环碳酸酯（DTC）和ε-己内酯（ε-CL）开环共聚合的高分子链链节结构研究中,模拟结果较好地重现了实验数据.并提供了三元组分布、均聚链链节长度等难于从实验测定的微观信息.本算法为研究复杂机理的多链共聚合体系提出了仿真框架.展开更多
In this review, a recent development of cationic ?-diimine palladium(II) complexes for ethylene polymerization and copolymerization with polar functionalized comonomers was briefly described. First, the polymerization...In this review, a recent development of cationic ?-diimine palladium(II) complexes for ethylene polymerization and copolymerization with polar functionalized comonomers was briefly described. First, the polymerization mechanism for this type of catalysts was discussed. Next, recent advances in ligand design were provided with special focus on the influence of ligand structures on the catalytic polymerization properties. Last, the ethylene homopolymerization and copolymerization with various polar comonomers, especially acrylate and vinyl ethers were summarized.展开更多
文摘在凝胶色谱（GPC）测试高聚物分子量和分子量分布的实验基础上,建立了一个共聚合多分散体系的 Monte Carlo计算机仿真算法,模拟共聚合过程中每个单体链节的形成,记录每条长度不等的高分子链的链节结构和微观序列分布.应用于2,2-二甲基三亚甲基环碳酸酯（DTC）和ε-己内酯（ε-CL）开环共聚合的高分子链链节结构研究中,模拟结果较好地重现了实验数据.并提供了三元组分布、均聚链链节长度等难于从实验测定的微观信息.本算法为研究复杂机理的多链共聚合体系提出了仿真框架.
基金supported by the National Natural Science Foundation of China(21374108,21304054)the Promotive Research Fund for the Young and Middle-aged Scientists of Shandong Province(BS2012CL018)+2 种基金the Foundation of Qufu Normal University(XJ201212)the Fundamental Research Funds for the Central Universities(WK3450000001)the State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University(LK1424)
文摘In this review, a recent development of cationic ?-diimine palladium(II) complexes for ethylene polymerization and copolymerization with polar functionalized comonomers was briefly described. First, the polymerization mechanism for this type of catalysts was discussed. Next, recent advances in ligand design were provided with special focus on the influence of ligand structures on the catalytic polymerization properties. Last, the ethylene homopolymerization and copolymerization with various polar comonomers, especially acrylate and vinyl ethers were summarized.
