Abstract The present study concerns a practical approach to survey water sorption properties of ionic liquid ([EMIM]OAc) treated papers with and without chemical crosslinking. Ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([EMIM]OAc) can be used to transform sulfate pulp paper to regenerated cellulose film-like material. The fusion process increases both the dry and wet strength of the paper, improves oxygen and grease barrier properties, and increases paper transparency. The transformation is brought about by dissolution of the surfaces of the cellulosic fibers followed by precipitation and fusion of the fiber surfaces. Treatment conditions can be adjusted to produce partial dissolution of the fibers resulting in paper-like materials with improved wet-strength, or to achieve substantial or full dissolution resulting in transparent, regenerated cellulose film-like materials. From the industrial feasibility point of view, understanding the water sorption properties of IL-treated paper and the process parameters to control it are crucial. Results show that the treatment makes the paper more sensitive to both liquid water and water vapor, the magnitude depending on the degree of fiber dissolution and restraint of sheet shrinking during the treatment. Decreased water absorption and improved sheet dimensional stability were achieved by use of chemical crosslinking.

中文翻译：

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离子液体[EMIM]OAc处理再生硫酸盐浆纸的吸水性能

摘要 本研究涉及一种实用的方法来调查离子液体 ([EMIM]OAc) 处理过的纸的吸水性能，有和没有化学交联。离子液体 (IL) 1-乙基-3-甲基咪唑醋酸盐 ([EMIM]OAc) 可用于将硫酸盐纸浆纸转化为再生纤维素膜状材料。融合过程提高了纸张的干强度和湿强度，改善了氧气和油脂阻隔性能，并增加了纸张透明度。这种转变是通过纤维素纤维表面的溶解，然后是纤维表面的沉淀和融合来实现的。可以调整处理条件以产生纤维的部分溶解，从而产生具有改善的湿强度的纸状材料，或实现基本或完全溶解，从而产生透明、再生纤维素膜状材料。从工业可行性的角度来看，了解 IL 处理过的纸的吸水性能和控制它的工艺参数至关重要。结果表明，该处理使纸张对液态水和水蒸气更加敏感，其大小取决于处理过程中纤维溶解的程度和对纸张收缩的抑制。通过使用化学交联实现了吸水率的降低和纸张尺寸稳定性的提高。大小取决于处理过程中纤维溶解的程度和对板材收缩的抑制。通过使用化学交联实现了吸水率的降低和纸张尺寸稳定性的提高。大小取决于处理过程中纤维溶解的程度和对板材收缩的抑制。通过使用化学交联实现了吸水率的降低和纸张尺寸稳定性的提高。