高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (8): 739.

• 研究论文 • 上一篇    下一篇

用负载型钛系催化剂进行乙烯-丁二烯共聚合的研究(Ⅰ)—共聚产物合成与结构的表征

孙立新, 卢泽俭, 陆耘, 林尚安   

  1. 中山大学高分子研究所
  • 收稿日期:1985-04-16 出版日期:1986-08-24 发布日期:1986-08-24

Studies on the Copoiymerization of Ethylene and Butadiene with Supported Titanium Catalyst (Ⅰ)—The Synthesis and Characterization of the Copoiymerization Products

Sun Lixin, Lu Zejian, Lu Yun, Lin Shangan   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou
  • Received:1985-04-16 Online:1986-08-24 Published:1986-08-24

摘要: 用负载型钛系催化剂(TiCl4/MgCl2/AlEt3)进行了乙烯-丁二烯共聚合的研究。考察了不同单体比对共聚合的影响。用IR光谱、13CNMR谱、DTA谱X-射线衍射、透射电镜及溶剂萃取等方法对共聚产物进行了表征和分析,并初步进行了接枝试验。

Abstract: The copolymerization of ethylene and butadiene with a supported titanium catalyst is described.It is found that in this catalyst system ethylene is more reactive than butadiene.Although the catalytic efficiency of copolymerization is lower than that of homopolymerizations,it can still be maintained at a good level.The copolymerization products were extracted successively with a series of solvents and characterized by means of IRspectra,13CNMRspectra,X-ray diffraction analysis,differential thermal analysis and electron micrograph.The IRstudy showed that the butadiene units are substantially in trans-1,4 configuration.The 13CNMRstudy showed a PE/PBblock-type structure.The DTAand X-ray diffraction analysis showed that two crystalline phases exist in the products.The systematic solvent extraction and the TEMstudy showed that the solubility and the morphological structure of the copolymerization products are quite different from that of the blend of two homopolymers.The ethylene-butadiene copolymerization products can be chemically graphed with some polar monomers such as MMAand Maleic anhydride.It was found that the presence of a low content of unsaturated units ( 5 mol% ) greatly promote the capability of graft polymerization,which offers a possibility for modifying the properties of polymer.

TrendMD: