Effect of the chain length on the inter-and intramolecular dynamics of liquid oligo(ethylene glycol)s
Article Abstract:
A study is conducted to investigate the separation of inter and intermolecular effects on the dielectric relaxation behavior of ethylene glycol (sub n) and poly ethylene glycol compounds at 25 degree Celsius. The result reveals that this approach allows separation of end group effects connected with the relaxation of the hydrogen bond network from intramolecular dipole relaxation processes caused by the reorientation of chain segments.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Dielectric relaxation of cationic surfactants in aqueous solution. 1. Solvent relaxation
Article Abstract:
Complex dielectric permittivity spectra in the frequency range of 0.09 less than equal to upsilon/ GHz less than equal to 89 were recorded for certain aqueous solutions at room temperature and specific concentrations. The analysis of the relaxation processes attributed to water reveals that the micelles formed by tetraalkylammonium surfactants are considerably hydrated by two different species of ground water.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
Dielectric relaxation of cationic surfactants in aqueous solution. 2. Solute relaxation
Article Abstract:
The complex dielectric permittivity spectra of octy-, dodecyl-, and hexadecyltrimethylammonium bromide and of dodecyltrimethylammonium chloride are studied. The study reveals two low-frequency relaxation processes centered around 80 and 250 MHz.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Effect of cholesterol and other additives on viscosity, self-diffusion coefficient, and intramolecular movements of oleic acid
- Abstracts: Influence of interchain interactions on the electronic properties of neutral and charged oligodiacetylenes carrying bulk substituents
- Abstracts: EXAFS spectra of the dilute solution of Ca(super 2+) and Sr(super 2+) in water and methanol. Formation of Ca(super 2+)(CO)(sub 3) complexes during low-temperature CO adsorption on CaNaY Zeolite
- Abstracts: Studies on the interaction of THF with FER zeolite. Influence of dynamics on the structure and NMR chemical shift of a zeolite precursor
- Abstracts: Siting of mixtures in mordenite zeolites: (super 19)F and (super 129)Xe NMR molecular simulation. A numerical study of surface tension auto-oscillations. Effect of surfactant properties