The polyether-based PUU shows the better phase separation than polyester-based with the same molecular weight of soft segment.
在软链段分子量相同时，聚醚为基础的PUU的相分离程度较聚酯为基础的PUU高。
The effect of molecular weight and content of PEG in soft segment on morphology and properties of TPU was studied.
研究了聚乙二醇分子量和含量对TPU 的结构和性能的影响，提出了在TPU 软段中引入PEG可以改善其与硝酸酯的混溶能力。
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