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首页> 外文期刊>Macromolecules >Interaction of strong polyelectrolytes with surface-attached polyelectrolyte brushes-polymer brushes as substrates for the layer-by-layer deposition of polyelectrolytes
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Interaction of strong polyelectrolytes with surface-attached polyelectrolyte brushes-polymer brushes as substrates for the layer-by-layer deposition of polyelectrolytes

机译：强力聚电解质与表面附着的聚电解质刷-聚合物刷的相互作用，作为基底，用于逐层沉积聚电解质

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摘要

The complex formation between a monolayer consisting of strong polyelectrolyte molecules covalently attached to a solid surface and an oppositely charged strong polyelectrolyte in solution is studied. The surface-attached polyelectrolyte molecules are grown in situ on the substrate using a surface-initiated polymerization ("grafting from") technique. The amount of oppositely charged polymer adsorbed by the polyelectrolyte monolayer on the surface ("brush") is measured as a function of salt concentration, deposition time, polymer concentration, and thickness of the surface-attached monolayer. When the oppositely charged polymer is added to the polyelectrolyte brush, which is swollen in salt-free water, the monolayer collapses rapidly due to formation of a nonstoichiometric, insoluble polyelectrolyte-polyelectrolyte complex. It is shown that polyelectrolyte brushes are an interesting substrate for the buildup of well-defined polyelectrolyte multilayers through a layer-by-layer deposition process. [References: 49]
机译：研究了由共价结合到固体表面上的强聚电解质分子组成的单层与溶液中带相反电荷的强聚电解质之间的复合物形成。使用表面引发的聚合（“嫁接自”）技术，将表面附着的聚电解质分子在基底上原位生长。测量表面（“刷子”）上的聚电解质单分子层吸附的带相反电荷的聚合物的量，作为盐浓度，沉积时间，聚合物浓度和表面附着的单分子层的厚度的函数。当将带相反电荷的聚合物添加到在无盐水中溶胀的聚电解质刷中时，由于形成了非化学计量的，不溶性的聚电解质-聚电解质复合物，单层迅速塌陷。结果表明，聚电解质电刷是通过逐层沉积工艺形成轮廓分明的聚电解质多层的有趣基材。 [参考：49]

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