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首页> 外文期刊>Journal of Applied Polymer Science >Fluorinated segmented polyurethane anionomers for water-oil repellent surface treatments of cellulosic substrates
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Fluorinated segmented polyurethane anionomers for water-oil repellent surface treatments of cellulosic substrates

机译：含氟链段聚氨酯阴离子聚合物，用于纤维素基材的拒水拒油表面处理

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摘要

Three model structures of linear segmented anionomeric polyurethanes based on perfluoropolyether dimethylol-terminated oligomers, isophorone diisocyanate, and dimethylol propionic acid were synthesized and obtained in the form of aqueous dispersions. The structures differed from each other in the chemical nature of the chain extender (diol or diamine) and in the content of carboxylic acid. Dispersions and polymer films were characterized by dynamic light scattering, dynamic mechanical analysis, differential scanning calorimetry, and contact angle measurements. Diluted aqueous dispersions were also evaluated as protective sizing agents in paper treatment, both as bulk modifiers and as surface treatments. Paper sheets characterized by high water and oil repellence were obtained. The results showed that performance is mainly related to the ionic group content of the polymer and to its molecular architecture. (c) 2005 Wiley Periodicals, Inc.
机译：合成了基于全氟聚醚二羟甲基封端的低聚物，异佛尔酮二异氰酸酯和二羟甲基丙酸的线性链段阴离子型聚氨酯的三种模型结构，并以水分散体的形式获得。所述结构在扩链剂（二醇或二胺）的化学性质和羧酸含量上彼此不同。通过动态光散射，动态力学分析，差示扫描量热法和接触角测量来表征分散体和聚合物薄膜。稀释的水分散体在纸张处理中也被评估为保护性施胶剂，无论是作为本体改性剂还是作为表面处理剂。获得了具有高拒水拒油性的纸张。结果表明，性能主要与聚合物的离子基团含量及其分子结构有关。 （c）2005年Wiley Periodicals，Inc.

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