STUDY ON THE SEQUENCE STRUCTURE OF SBR BY ^(13)C-NMR METHOD Ⅵ MONTE CARLO SIMULATION OF THE SEQUENCE OF SBR

A program of Monte Carlo simulation of binary copolymerization for E-SBR (emulsion polymn. SB rubber) was made according to the terminal model. The simulation results obtained by this program were in good agreement with those experimental ones. A detail microstructure information of E-SBR molecular chain has been provided.

低等规聚丙烯的研制——Ⅲ.分子性质及其调节方法

用溶剂分级法对低等规聚丙烯(LIPP)进行了分级,测定了各级分的含量、分子量及其分布、特性粘数、分子链规整度及序列分布等分子性质。通过改变催化剂组分和合成条件以及改变聚合工艺条件来调节分子性质。只有同时降低高分子量和高等规组分的含量,才能获得具有商品意义的LIPP产品。