Crossover behavior in high-frequency dielectric relaxation of linear polyions in dilute and semidilute solutions
Crossover behavior in high-frequency dielectric relaxation of linear polyions in dilute and semidilute solutions
复制标题
DOI：
10.1021/ma00205a027
复制
发表时间：
1990-05
期刊：
影响因子：
5.5
通讯作者：
K. Ito;A. Yagi;N. Ookubo;R. Hayakawa
中科院分区：
文献类型：
--
作者：
K. Ito;A. Yagi;N. Ookubo;R. Hayakawa
在从稀到半稀区域的聚合度 N 和聚合物浓度 C p 的宽范围内测量了聚苯乙烯磺酸钠在水溶液中的高频介电弛豫的复介电常数。高频弛豫的交叉行为可归因于相关长度 xi 的交叉行为，它分别在稀和半稀区域中显示出不同的 C p 依赖性
The complex dielectric constant of the high-frequency dielectric relaxation of sodium polystyrene sulfonate in aqueous solutions was measured over wide ranges on degree of polymerization, N, and polymer concentration, C p , from the dilute to the semidilute region. The crossover behavior of the high-frequency relaxation is ascribable to that of the correlation length, ξ, which shows different C p dependences in the dilute and semidilute regions, respectively