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中文摘要：
以球形高效负载的TiCl4/MgCl2/邻苯二甲酸二异丁酯（ DIBP）为催化剂，采用本体聚合方法进行丙烯与1-丁烯共聚合研究.考察了共单体效应对共聚活性及聚合物立构规整性的影响；表征了共聚物的结构.结果表明，随着1-丁烯/丙烯投料比的增加，聚合活性呈先升高后降低的趋势，在1-丁烯/丙烯摩尔投料比为0.26条件下聚合活性达到最高，并随着共聚物中1-丁烯含量的增加，共聚物的熔点明显下降，分子量降低，分子量分布变窄，同时共聚物力学性能有明显提高，透明度逐渐增加.
英文摘要：
The spherical MgCl2 supported TiCl4 catalyst（ TiCl4/MgCl2/DIBP） was applied to bulk copolymeri-zation of propylene and 1-butene. The influence of comonomer feed ratio on catalyst activity and stereoregulari-ty of the copolymers were studied. The composition and properties of copolymers were investigated by 13 C nuclear magnetic resonance （ 13 C NMR ） , differential scanning calorimetry （ DSC ） , infrared （ IR ） and gel permeation chromatography（GPC）. The results showed that the polymerization activity increased firstly and then decreased with the increasing 1-butene/propylene feed ratio（B/P）. The highest polymerization activity was achieved at B/P=0. 26. As the 1-butene content in the copolymers increased, the melting point of the co-polymers decreased and the molecular weight distribution became narrow. Meanwhile, the mechanical proper-ties of the copolymers were improved significantly, and the transparency was gradually increased.
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