Abstract

Rheological properties of composite hydrogels of agar with carboxymethyl cellulose sodium salt (NaCMC), intended for water conservation, were studied. The viscosity and yield stress of the hydrogels can both increase and decrease depending on the ratio of the polymer components in the hydrogel. Heating of the starting mixture for hydrogel preparation in the magnetic field influences the rheological properties of both agar and composite hydrogels. The stability of the hydrogels in storage and the syneresis depend on the NaCMC to agar ratio. The total water loss by the hydrogel samples in 1 year does not exceed 2 wt %. Introduction of NaCMC prevents syneresis in the course of the hydrogel freezing–thawing.

中文翻译：

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羧甲基纤维素琼脂水凝胶的流变性质和保水力

摘要

研究了用于节水的琼脂与羧甲基纤维素钠盐（NaCMC）复合水凝胶的流变特性。水凝胶的粘度和屈服应力可根据水凝胶中聚合物组分的比例而增加和降低。在磁场中加热用于制备水凝胶的起始混合物会影响琼脂和复合水凝胶的流变性。水凝胶在储存和脱水收缩中的稳定性取决于NaCMC与琼脂的比例。水凝胶样品在1年内的总失水量不超过2 wt％。NaCMC的引入可防止水凝胶冻融过程中的脱水收缩。