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首页> 外文会议>Macromolecular Symposia 211; Dresden Polymer Discussion: Polyelectrolytes; 20030316-19; Dresden(DE) >Poly(Styrene Sulfonate) Self-Organization: Electrostatic and Secondary Interactions
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Poly(Styrene Sulfonate) Self-Organization: Electrostatic and Secondary Interactions

机译：聚苯乙烯磺酸酯自组织：静电和二次相互作用

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摘要

We investigate the self-organization of PSS in brushes and polyelectrolyte multilayers with X-ray, neutron and optical reflectivity. The electrostatic force dominates brush phases and adsorption behavior, additionally we find evidence of a strong hydrophobic force: (ι) within amphiphilic diblock copolymer monolayers, a PSS monolayer adsorbs flatly to the hydrophobic block, (ιι) on temperature increase (and with screened electrostatic forces), more PSS is adsorbed onto oppositely charged surfaces, and (ιιι) a polyelectrolyte multilayers shrinks when heated at 100% r.h. The latter two effects are consistent with the well-known increase of the hydrophobic force on heating: The increased PSS surface coverage can be attributed to deteriorating solvent conditions. Within a polyelectrolyte multilayer, an increase of the hydrophobic force maximizes the local contact of hydrophobic polymer segments, causing a reduction of swelling and an increased mass density.
机译：我们用X射线，中子和光反射率研究了刷子和聚电解质多层中PSS的自组织。静电力主导着刷相和吸附行为，此外，我们发现了很强的疏水力的证据：（ι）在两亲性二嵌段共聚物单分子层中，PSS单分子层平坦地吸附在疏水性嵌段上，（ι）随着温度的升高（以及屏蔽的静电）力），更多的PSS吸附在带相反电荷的表面上，并且（ιι）聚电解质多层在100％rh加热时会收缩后两种效果与加热时疏水力的众所周知的增加一致：PSS表面覆盖率的增加可归因于溶剂条件的恶化。在聚电解质多层中，疏水力的增加使疏水性聚合物链段的局部接触最大化，从而导致溶胀的减少和质量密度的增加。

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