The result showed that the hyperbranched polyester had narrow molecular weight distribution,its molecular weight distribution become wider and polydispersity rised when the generations increased.

• GPC的结果表明:随着代数的增加,超支化聚酯的分散指数增加,相对分子质量分布加宽,聚酯的实测相对分子质量与理论相对分子质量的差越来越大。