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Preparation and characterization of discrete mass polyether-based polyurethane oligomers
Polymer ( IF 4.6 ) Pub Date : 2022-06-21 , DOI: 10.1016/j.polymer.2022.125069
Ian D. Tomlinson , Jody C. May , Rachel A. Harris , Kevin M. Buck , Sandra J. Rosenthal , John A. McLean , David M. Hercules

Polyurethanes are specialized polymeric materials with a diverse range of applications including foams, insulators, sealants, adhesives and elastomers. Analysis of these materials utilizing mass spectrometry is hampered by the polydispersity and the range of isomeric products produced during the polymerization process. To aid with the mass spectral studies of these materials we have developed methodologies to synthesize discreet polyether-based polyurethane oligomers that may be studied by mass spectrometry and used as standards in the analysis of more complex polymer products. We have synthesized oligomers consisting of polyethylene glycol and poly(tetrahydrofuran) adducts of methylene diphenyl diisocyanate (MDI) and characterized these by NMR and mass spectrometry. These oligomers represent both symmetrical and asymmetrical polyurethane derivatives.



中文翻译:

离散质量聚醚基聚氨酯低聚物的制备与表征

聚氨酯是一种特殊的聚合材料,应用范围广泛,包括泡沫、绝缘体、密封剂、粘合剂和弹性体。使用质谱分析这些材料受到聚合过程中产生的多分散性和异构产物范围的阻碍。为了帮助对这些材料进行质谱研究,我们开发了合成离散聚醚基聚氨酯低聚物的方法,这些低聚物可以通过质谱研究并用作分析更复杂聚合物产品的标准。我们合成了由聚乙二醇和亚甲基二苯基二异氰酸酯 (MDI) 的聚 (四氢呋喃) 加合物组成的低聚物,并通过 NMR 和质谱法对其进行了表征。

更新日期:2022-06-21
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