%0 Journal Article
%T CHARACTERIZATION OF CYCLIZED CIS-1,4 RANDOM COPOLYMER OF BUTADIENE AND ISOPRENE<br>环化顺1,4丁二烯异戊二烯无规共聚物的表征
%A YANG Ji-hua
%A PANG Shu-fen
%A XU Zheng-yan
%A SUN Tao
%A <br>杨继华
%A 逄束芬
%A 徐正炎
%A 孙涛
%J 高分子学报
%D 1993
%I 
%X The cis-1,4 random copolymers of butadiene and isoprene obtained by using a rare earth catalyst are cyclized in the presence of AlEt2Cl-PhCH2Cl system. The cyclized products are characterized by IR > 1H-NMR and pyrolysis gas chromatography. It was proved that the both units of butadiene and isoprene also take part in the cyclization, but the degree of cyclization of isoprene unit is more than that of butadiene unit.
%K cis-1
%K 4 Random copolymer of butadiene and isoprene
%K Intramolecular cy- clization
%K Characterization of cyclized products<br>无规共聚物
%K 丁二烯
%K 异戊二烯
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=15971983683C7643EE80F1CE621DEB60&aid=EA95B9DC2AEA2888F5382A282B592822&yid=D418FDC97F7C2EBA&iid=B31275AF3241DB2D&sid=04EA291949415E08&eid=0B9C8D3D9D6254B2&journal_id=1000-3304&journal_name=高分子学报&referenced_num=1&reference_num=2