The results show that with the increase of VSC in comonomer, the degree of branching expressed in the number of branches per 1000 degrees of polymerization (DP) increased.

• 用1H NMR表征了支化聚苯乙烯，表明支化聚苯乙烯的支化度可以通过共聚单体中VSC的比率来控制。