聚对苯二甲酸乙二酯(PET)薄膜经固相缩聚反应后，用凝胶色谱法测定产物的分子量、分子量分布和环状齐聚物含量。
Polyethylene terephthalate (PET) films were polymerized in solid phase, the molecular weight, molecular weight distribution (MWD) and cyclic oligomer content of the products were determined by GPC.
研究发现环状聚芳醚酮齐聚物熔融温度低，熔体粘度小，具有良好的流动性，十分有利于充模成型及浸渍增强纤维。
The melt viscosity of the cyclic oligomer is very low which is necessary to impregnate the carbon reinforcement well.
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