合成了系列水性聚氨酯分散液，就分子链软段中亲水性链段聚乙二醇(PEG)含量对聚氨酯涂膜结晶性的影响进行了探讨。
A series of water - borne polyurethanes were synthesized, and the effect of PEG content in soft - segment on the crystallization of their cast films was studied.
结果表明，水溶液中胆红素钙很难结晶形成晶体结构，但在模拟体系中，碳酸钙晶体与聚乙二醇模板的共同作用可诱导胆红素钙晶体的成核与生长。
The results indicate that the calcium carbonate crystal, formed from CO2 in the air, and polyethylene glycol(PEG) accelerated the nucleation and growth of calcium bilirubimate.
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