Abstract

It is shown that a chitosan coating can be deposited on the pore surface of Celgard polyolefin matrices from aqueous solutions of chitosan saturated with carbon dioxide under high pressure; i.e., when carbonic acid is formed. To ensure the stability of the coating, the initially hydrophobic matrices should be pretreated in the presence of peroxycarbonic acid, which is formed when the aqueous solution of hydrogen peroxide is saturated with carbon dioxide at a high pressure. The morphology of the deposited coating is studied by high-resolution microscopy. The introduced hydrophilic properties are evaluated from a change in the nature of the wetting of the matrix surface with water. It is found that the hydrophilized matrix modified with chitosan, in spite of a lower characteristic pore size, has ~1.5 times higher permeability for water than the initial matrix.

中文翻译：

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在压力下存在二氧化碳的情况下在Celgard多孔基质上沉积壳聚糖涂层

摘要

结果表明，在高压下，由二氧化碳饱和的壳聚糖水溶液可以将壳聚糖涂层沉积在Celgard聚烯烃基体的孔表面上。即，当形成碳酸时。为了确保涂层的稳定性，最初的疏水性基质应在过氧碳酸存在下进行预处理，过氧碳酸是在高压下过氧化氢水溶液被二氧化碳饱和时形成的。通过高分辨率显微镜研究了沉积涂层的形态。所引入的亲水性是通过用水润湿基质表面的性质改变来评估的。发现尽管壳聚糖的特征孔径较小，但经壳聚糖改性的亲水基体仍为〜1。