以新戊二醇和二羟基丙酸作为合成单体,二甲苯作为溶剂,对甲基苯磺酸作为催化剂,采用一步法合成了具有不同代数的端羟基超支化聚酯.同时,利用傅里叶红外光谱、核磁共振碳谱和氢谱对其结构进行了表征,并利用GPC和DSC对其相对分子质量分布和玻璃化温度进行了分析.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.
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