The results showed that long-chain branching degreee and relative molecular mass distribution of cis-polybutadiene could be measured by using the universal calibration technique.

• 测定了顺丁橡胶样品的相对分子质量分布和长链支化度,讨论了影响测定结果的因素,并考察了样品中凝胶含量与支化度的关系。