高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (1): 143.

• 论文 • 上一篇    下一篇

轻质碳酸钙/聚丙烯共混物中聚丙烯β-晶的成核结晶研究

廖凯荣1, 陈学信1, 郑臣谋2   

  1. 1. 广州中山大学高分子研究所, 广州 510275;
    2. 中山大学化学系, 广州 510275
  • 收稿日期:1994-01-07 修回日期:1994-04-20 出版日期:1995-01-24 发布日期:1995-01-24
  • 通讯作者: 廖凯荣,男,48岁,副教授.
  • 作者简介:廖凯荣,男,48岁,副教授.
  • 基金资助:

    中山大学科学基金

Studies on the Nucleation and Crystallization of β-Crystal of Polypropylene in Light Calcium Carbonate/Polypropylene Blends.

LIAO Kai-Rong1, CHEN Xue-Xin1, ZHENG Chen-Mou2   

  1. 1. Institute of Polymer Science, Zhongshan University, Guangzhou, 510275;
    2. Department of Chemistry, Zhongshan University, Guangzhou, 510275
  • Received:1994-01-07 Revised:1994-04-20 Online:1995-01-24 Published:1995-01-24

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摘要： 用X射线衍射和差示扫描量热法研究了轻质碳酸钙/聚丙烯共混物(L-CaCO3/PP)中PPβ-晶的成核结晶现象,发现PPβ-晶的成核结晶与PP的来源和L-CaCO3在共混物中的含量有关,铝酸酯偶联剂对共混体系的PPβ-晶的成核结晶有显著的增强作用。分析认为共混物中PPβ-晶的成核结晶现象是PP中存在的某些杂质(主要是催化剂残余物)与L-CaCO3组成的复合成核剂作用的结果,而铝酸酯是这种复合成核剂的一种促进剂。

关键词: 轻质碳酸钙, 铝酸酯, 聚丙烯, &beta, －晶, 成核结晶作用

Abstract: The phenomenon of nucleation and crystallization of β-crystal of polypropylene(PP)in light calcium carbonate(L-CaCO3)/PPblends was studied by X-ray diffraction and differential scanning calorimetry. It was found that the nucleation and crystallization of βcrystal of PPin L-CaCO3/PPblends was dependent on the PPsamples used. Aluminate coupling agents have a synergistic effect on the nucleation and crystallization of β-crystal of PPin L-CaCO3/PPblends. It is believed tl1at the phenomenon of nucleation and crystallization of β-crystal of PPin L-CaCO3/PPblends is the result of the action of a complex nucleation agent composed of residues of the catalyst used for polymerization of propylene and L-CaCO3,and the aluminates may be considered as promoters in the complex nucleation agent.

Key words: Light calcium carbonate, Aluminate, Polypropylene, β-crystal, Nucleation and crystallization

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