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(接上期)4.乙丙橡胶的红外光谱分析乙丙橡胶是以乙烯和丙烯为主要单体的共聚物,二元乙丙橡胶(EPR)只用乙烯和丙烯两种单体合成,其结构式如下:当丙烯与少量乙烯(<10%)在立体有择催化剂的作用下,生成的共聚物分子链中有相当长的乙撑序列接到丙撑序列上,其光谱实际上是结晶聚乙烯与等规聚
(Connected to the previous period) 4. Infrared spectroscopy of ethylene-propylene rubber Ethylene-propylene rubber is a copolymer of ethylene and propylene as the main monomer, ethylene-propylene rubber (EPR) only ethylene and propylene monomer synthesis, the structural formula As follows: When propylene and a small amount of ethylene (<10%) in the role of stereospecific catalyst, the resulting copolymer molecular chain has a relatively long ethylene sequence is connected to the propylene sequence, the spectrum is actually crystalline polyethylene With isotactic poly