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首页> 外文期刊>Polymer science, Series C >Influence of chain microstructure of acrylic acid and 4-vinylpyridine copolymers on their aggregative stability and adsorption from aqueous solutions
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Influence of chain microstructure of acrylic acid and 4-vinylpyridine copolymers on their aggregative stability and adsorption from aqueous solutions

机译：丙烯酸和4-乙烯基吡啶共聚物的链微观结构对水溶液中的聚集稳定性和吸附性的影响

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摘要

AbstractThe behavior of acrylic acid–4-vinylpyridine copolymers of different architectures, namely, with gradient and block distributions of comonomer units in a chain as well as with quaternized 4-vinylpyridine units, is studied. It is shown that all the copolymers are prone to aggregation in acidic and alkaline media and that the sizes of aggregates and the regions of their stability are determined by chain microstructure. The aggregates formed in acidic media exhibit temperature sensitivity. The kinetics and mechanism of copolymer adsorption from solutions on the surface of nylon membranes are explored. It is shown that the block distribution of units substantially increases the adsorption efficiency, while the quaternization of 4-vinylpyridine units decreases the monolayer adsorption parameters.
机译：<标题>摘要 ara>不同架构的丙烯酸-4-乙烯基吡啶共聚物的行为，即用链条中的共聚单体单元以及季铵化4-乙烯基吡啶单元的共聚单体单元的梯度和块分布。 。 结果表明，所有共聚物都易于在酸性和碱性介质中聚集，并且聚集体的尺寸和它们的稳定性区域由链微结构确定。 在酸性培养基中形成的聚集体表现出温度敏感性。 探讨了从尼龙膜表面溶液中共聚物吸附的动力学和机制。 结果表明，单位的块分布基本上增加了吸附效率，而4-乙烯基吡啶单元的季铵化降低了单层吸附参数。

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