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首页> 外文期刊>RSC Advances >Application of successive self-nucleation and annealing (SSA) to poly(1-butene) prepared by Ziegler-Natta catalysts with different external donors
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Application of successive self-nucleation and annealing (SSA) to poly(1-butene) prepared by Ziegler-Natta catalysts with different external donors

机译：在不同外部供体的Ziegler-Natta催化剂中施加连续的自成核和退火（SSA）将（SSA）用不同的外部供体制备的聚（1-丁烯）

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摘要

Alkoxysilane compounds R1R2Si(OMe)(2) were used as external donors in 1-butene polymerization with MgCl2-supported Ziegler-Natta catalysts. The structure of the prepared iPB was characterized by C-13 NMR and GPC. The thermal properties of poly(1-butene) (iPB) were studied by DSC. The crystallization behavior and sequence length distribution of poly(1-butene) were investigated using successive self-nucleation and annealing (SSA) thermal fractionation technology. The SSA results indicated that steric hindrance of an external donor has more influence on the properties of iPB, as each melting point peak and the enthalpy of fusion of iPB gradually increased with an increase in steric hindrance of the external donor. Considering all properties, cyclopentyl-isopropyl-dimethoxysilane had an advantage compared to other external donors in the polymerization of 1-butene.
机译：烷氧基硅烷化合物R1R2SI（OME）（2）用作用MgCl 2负载的Ziegler-Natta催化剂中的1-丁烯聚合中的外部供体。 制备的IPB的结构特征在于C-13 NMR和GPC。 通过DSC研究了聚（1-丁烯）（IPB）的热性质。 使用连续的自成核和退火（SSA）热分馏技术来研究聚（1-丁烯）的结晶行为和序列长度分布。 SSA结果表明，外部供体的空间阻力对IPB的性质影响更多，因为每个熔点峰值和IPB融合的焓随外部供体的空间阻碍的增加而逐渐增加。 考虑到所有性质，环戊基 - 异丙基 - 二甲氧基硅烷与其他外部供体在1-丁烯的聚合中的其他外部供体相比具有优势。

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  • 来源
    《RSC Advances》 |2015年第13期|共9页
  • 作者

    Zheng Tao; Zhou Qian; Li Qian; Li Huayi; Zhang Liaoyun; Hu Youliang;

  • 作者单位

    Univ Chinese Acad Sci Coll Chem &

    Chem Engn Beijing Peoples R China;

    Univ Chinese Acad Sci Coll Chem &

    Chem Engn Beijing Peoples R China;

    Chinese Acad Sci Beijing Natl Lab Mol Sci Key Lab Engn Plast Inst Chem Beijing 100864 Peoples R China;

    Chinese Acad Sci Beijing Natl Lab Mol Sci Key Lab Engn Plast Inst Chem Beijing 100864 Peoples R China;

    Univ Chinese Acad Sci Coll Chem &

    Chem Engn Beijing Peoples R China;

    Chinese Acad Sci Beijing Natl Lab Mol Sci Key Lab Engn Plast Inst Chem Beijing 100864 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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