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首页> 外文期刊>Journal of Applied Polymer Science >Properties and paper sizing application of waterborne polyurethanemicroemulsions: Effects of extender, cross-linker, and polyol
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Properties and paper sizing application of waterborne polyurethanemicroemulsions: Effects of extender, cross-linker, and polyol

机译：水性聚氨酯微乳液的性质和施胶应用：增量剂，交联剂和多元醇的作用

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A series of waterborne polyurethane (WPU) microemulsions were synthesized through self-emulsification methodology, using toluene-2,6-diisocyanate, polytetramethylene glycol (PTMG), poly-caprolactonediol (PCL), and dimethylol propionic acid (DMPA) as monomers; isophorone diamine (IPDA) as chain extender; and aziridine as cross-linking agent. The resultant WPU microemulsions were utilized as surface-sizing agents for cellulose fiber paper. The influences of IPDA content, PTMG/PCL molar ratio, and aziridine content on the physicochemical properties of the resultant emulsions and sized paper have been investigated in detail. The WPU microemulsion displayed better surface sizing properties when it was prepared under the following conditions: the IPDA content of 2.96%, PTMG/PCL molar ratio of 0:4, and aziridine content of 2.0 wt %. The relationships between the WPU structure and properties of WPU films and sized paper were clearly illustrated. The mechanical properties and water resistance of sized paper were not only depended on the interactions, chain entanglements, and cross-linking density among the WPU chains, but also relied on the interactions among polymers and fibers, as well as the polarity and stiffness of surface sizing agent. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43211.
机译：以甲苯-2,6-二异氰酸酯，聚丁二醇（PTMG），聚己内酯二醇（PCL）和二羟甲基丙酸（DMPA）为单体，通过自乳化法合成了一系列水性聚氨酯（WPU）微乳液;异佛尔酮二胺（IPDA）作为扩链剂;和氮丙啶作为交联剂。所得的WPU微乳液用作纤维素纤维纸的表面施胶剂。详细研究了IPDA含量，PTMG / PCL摩尔比和氮丙啶含量对所得乳液和上胶纸理化性质的影响。在以下条件下制备时，WPU微乳液显示出更好的表面施胶性能：IPDA含量为2.96％，PTMG / PCL摩尔比为0：4，氮丙啶含量为2.0 wt％。清楚地说明了WPU结构与WPU膜和施胶纸性能之间的关系。施胶纸的机械性能和耐水性不仅取决于WPU链之间的相互作用，链缠结和交联密度，还取决于聚合物与纤维之间的相互作用以及表面的极性和刚度上浆剂。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，43211。

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