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首页> 外文期刊>Journal of Applied Polymer Science >Rheological properties of an interpolymer complex formed between poly(acrylic acid) and methyl cellulose
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Rheological properties of an interpolymer complex formed between poly(acrylic acid) and methyl cellulose

机译：聚丙烯酸和甲基纤维素形成的共聚体的流变性能

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摘要

Some rheological properties of an interpolymer complex formed in the mixtures of aqueous solutions of poly(acrylic acid) and methyl cellulose are investigated. In a diluted state, the complex exhibits polyelectrolyte properties, and in the shear field, it flows like a pure poly(acrylic acid) solution. From the experimental data obtained from the mixture flow in a longitudinal field, an effective relaxation time was calculated. It turned out to be higher than that for the initial components. The deviation of the experimental values of the viscosity from the calculated additive ones allowed us to determine the critical molecular weight of the poly(acrylic acid) below which the complex is not formed: Mcr approximately equals 6 × 104, which is one order of magnitude higher than for the mixtures of spatially complementary macromolecules. The increase of the total polymer concentration in the mixture first leads to an increase of the complex size. Further increase of the polymer concentration and transition to the semidiluted state decreases the complex size and also decreases its solubility in water.
机译：研究了在聚丙烯酸和甲基纤维素的水溶液混合物中形成的互聚物配合物的一些流变特性。在稀释状态下，该复合物表现出聚电解质特性，并且在剪切场中，它像纯的聚丙烯酸溶液一样流动。根据从纵向场中的混合物流动获得的实验数据，计算出有效的弛豫时间。事实证明它比初始组件的要高。粘度的实验值与计算得出的添加剂值之间的偏差使我们能够确定聚丙烯酸的临界分子量，在该分子量以下不会形成络合物：Mcr大约等于6×104，是一个数量级。高于空间互补大分子的混合物。混合物中总聚合物浓度的增加首先导致配合物尺寸的增加。聚合物浓度的进一步增加和向半稀释状态的转变减小了络合物的尺寸，并且还降低了其在水中的溶解度。

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