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首页> 外文期刊>Polymers for advanced technologies >Preparation of aqueous anionic poly(urethane-urea) dispersions. Influence of the incorporation of acrylic, polycarbonate and perfluoro-oligoether diols on the dispersion and polymer properties
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Preparation of aqueous anionic poly(urethane-urea) dispersions. Influence of the incorporation of acrylic, polycarbonate and perfluoro-oligoether diols on the dispersion and polymer properties

机译：制备水性阴离子聚（氨酯-脲）分散体。丙烯酸，聚碳酸酯和全氟低聚醚二醇的掺入对分散体和聚合物性能的影响

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摘要

Aqueous poly(urethane-urea) dispersions were prepared by the prepolymer mixing technique, without using any organic solvent. This work focused on the incorporation into the prepolymer chain of specific macrodiols bearing acrylic, polycarbonate and perfluoro-oligoether chains, in conjunction with a poly(propylene oxide) diol (M{sub}n = 1000). All the dispersions were synthesized with a fixed NCO/OH ratio, using α,α,α',α'-tetramethyl-1,3-xylylene diisocayanate, a fixed proportion of emulsifying agent (dimethylol propionic acid, neutralized with triethylamine) and the same chain extender (1,2-ethylene diamine). The properties of both the dispersions and the dried polymer films were characterized as a function of the nature of the specific incorporated diol and its proportion in the polymer chain, in order to establish criteria leading to an optimized performance in terms of particle size, viscosity, and polymer film properties.
机译：通过预聚物混合技术制备聚（氨基甲酸酯-脲）水分散体，不使用任何有机溶剂。这项工作集中于将带有丙烯酸，聚碳酸酯和全氟-低聚醚链的特定大分子二醇与聚环氧丙烷二醇（M {sub} n = 1000）结合到预聚物链中。使用α，α，α'，α'-四甲基-1,3-二甲苯二异氰酸酯，固定比例的乳化剂（二羟甲基丙酸，三乙胺中和）和相同的扩链剂（1,2-乙二胺）。分散体和干燥后的聚合物薄膜的性能均根据特定掺入的二醇的性质及其在聚合物链中的比例进行表征，以建立可在粒度，粘度，和聚合物膜的性能。

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