利用不同催化剂体系的定向聚合,可使丁二烯聚合成双键在主链和侧基中分布不同的聚合物。对于这些聚合物的氧化性能,尽管早期有人利用不同单体单元的均聚物和共聚物如天然胶、古塔坡胶以及丁钠、丁锂、丁苯、丁基胶等作过比较,认为丁二烯橡胶分子主链和乙烯侧基上所含双键的比例可以极大地影响其反应能力,主链上双键在 Polymerization of butadiene into double bonds using different catalyst systems for directional polymerization can distribute different polymers in the backbone and side groups. For the oxidation performance of these polymers, although homopolymers and copolymers of different monomer units such as natural gum, kupatung gum, sodium butylate, butyllithium, butylbenzene and butyl gum have been compared in the early days, it is considered that The ratio of the double bonds contained in the butadiene rubber molecular chain and ethylene side groups can greatly affect the reaction ability. The double bond in the main chain