Synthesis Of Re-Pulpable Temporary Wet Strength Polymer For Tissue Application

A grafted polyvinyl alcohol polymer has a balance between hydrophilicity and hydrophobicity. The grafted polyvinyl alcohol polymer has a chemical functionality that allows for adsorption onto the pulp fibers， polymer film formation upon drying， repelling water upon wetting， polymer film swelling and breaking for prolonged wetting by water. When incorporated into paper products， the polymer can provide a paper having improved wet strength， temporary water repellency， and/or is dispersible in aqueous solutions.

一种接枝型聚乙烯醇（polyvinyl alcohol）聚合物，可实现亲水性与疏水性的良好平衡。该接枝型聚乙烯醇聚合物具备特定化学官能性，可实现以下性能：吸附于纸浆纤维表面、干燥时形成聚合物膜、润湿状态下抵御水分侵入，以及在长期水浸环境中发生溶胀与断裂。将该聚合物添加至纸制品中时，可赋予纸张更优异的湿强度、临时拒水性，或使其可在水溶液中分散。