Effect of Molecular Architecture on the Polyelectrolyte Structuring under Confinement
Effect of Molecular Architecture on the Polyelectrolyte Structuring under Confinement
复制标题
分子结构对约束下聚电解质结构的影响
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
R. Klitzing
中科院分区：
文献类型：
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作者：
C. Üzüm;R. Makuška;R. Klitzing
本文讨论了不同浓度和聚合物支化度的半稀溶液的结构和流变性。所使用的聚合物由2-丙烯酰胺基-2-甲基丙磺酸钠（NaPAMPS）单元和丙烯酸2-（2-溴丙酰氧基）乙酯（BPEA）支化插入物构成。聚电解质中BPEA的支化单元的含量为6%、17%和24%。利用小角X射线散射（SAXS）和胶体探针原子力显微镜（CP-AFM）的数据对比研究了固-固约束对结构化的影响。散射峰SAXS和振荡力曲线从CP-AFM表明一个瞬态网络的结构参数，如链间距离，相关长度，和相互作用强度的双链。用SAXS（体）和CP-AFM（禁闭）得到的链间距离和相关长度在相同的范围内，表明在禁闭的凝胶中网络没有压缩。
The paper addresses the structuring and rheology of semidilute polyelectrolyte solutions with varied concentration and degree of polymer branching. The used polymer is constituted of the units of sodium 2-acrylamido-2-methylpropanesulfonate (NaPAMPS) with the branching inserts of 2-(2-bromopropionyloxy)ethyl acrylate (BPEA). The content of the branching units of BPEA in the polyelectrolytes was 6, 17, and 24%. Comparison of data obtained by small-angle X-ray scattering (SAXS) and colloidal probe atomic force microscope (CP-AFM) was used to study the effects of a solid–solid confinement on the structuring. Scattering peaks from SAXS and oscillatory force curves from CP-AFM indicate a transient network of polyelectrolyte chains with structural parameters such as interchain distance, correlation length, and interaction strength. The interchain distance and the correlation length obtained by SAXS (bulk) and CP-AFM (confinement) are in the same range, suggesting no compression of the network in the confined ge...
散装和封闭条件下聚电解质 (NaPSS) 溶液的结构与浓度和分子量的函数关系
影响因子：
5.5
作者：
C. Üzüm;S. Christau;R. von Klitzing
通讯作者：
R. von Klitzing