In connection with the poor processibility of high polymerization degree poly (vinyl chloride), chemical and physical methods for improving its processibility were reviewed in this paper.
针对高聚合度聚氯乙烯加工性能较差的缺点，综述了改进其加工性能的化学和物理方法。
2
To study the radical character of naphthalene lithium, which is a classical anionic initiator, the polymerization of vinyl acetate was initiated by it.
为研究阴离子聚合引发剂萘锂络合物是否可引发自由基聚合，进行了萘锂络合物引发醋酸乙烯聚合的实验。
3
Normal initiators used for graft polymerization of vinyl monomers on starch are reviewed with 21 references. The characterization, initiating mechanism and the application of initiators are discussed.