Institut National de Recherche et d'Analyse Physico-Chimique, Pôle Technologique de Sidi Thabet, 2020 Sidi Thabet - Tunisie.
J Phys Chem B. 2011 Jul 28;115(29):8951-60. doi: 10.1021/jp109974u. Epub 2011 Jul 6.
We study in this paper, either in the semidilute regime by small angle scattering or in dilute and semidilute unentangled regimes by viscosimetric measurements, the influence of temperature on the structure of aqueous solutions of an hydrophobic polyelectrolyte, poly(styrene-co-sodium styrene sulfonate). There is a strong consistency between the two methods: the very weak dependence over temperature at high chemical charge is increased for lower charge fractions, i.e., when hydrophobicity is increased. The solvent quality is thus modified, whereas, for comparison, the hydrophilic polyelectrolyte poly(acrylamide-co-sodium-2-acrylamido-2-methylpropane sulfonate), shows a structure totally independent of temperature, for all the charge fractions.
本文通过小角散射研究了在半稀溶液区，以及通过黏度测量研究了在稀溶液区和半稀无缠结区，温度对疏水型聚电解质，苯乙烯-磺酸钠共聚物水溶液结构的影响。这两种方法之间具有很强的一致性：在高化学电荷下，温度的影响非常小，而随着电荷分数的降低，即疏水性增加，这种影响会增大。因此，溶剂质量发生了变化，而相比之下，对于所有电荷分数，亲水性聚电解质丙烯酰胺-2-丙烯酰胺基-2-甲基丙磺酸共聚物的结构则完全与温度无关。
