Dynamic light scattering in semidilute solutions of nonionic surfactants. Entanglement of elongated micelles
Dynamic light scattering (DLS) has been observed for D/sub 2/O solutions of penta(oxyethylene glycol) n-dodecyl ether (C/sub 12/E/sub 5/) in the range 3-160 kg m/sup -3/ and 5-25 /sup 0/C. The mutual diffusion coefficient (D) obtained by DLS measurements takes a minimum which is shifted to lower concentrations when the temperature is increased. The log D-log c (c is concentration) plot becomes linear in the semidilute region, and the slope of the plot is close to the theoretical value for entangled polymers in good solvent. Self-diffusion coefficients of C/sub 12/E/sub 5/ in the lower concentration range have also been measured by means of pulsed-gradient FT-NMR to examine the effects of the critical concentration fluctuations.
- Research Organization:
- Tokyo Metropolitan Univ., Japan
- OSTI ID:
- 6043376
- Journal Information:
- J. Phys. Chem.; (United States), Vol. 91:18
- Country of Publication:
- United States
- Language:
- English
Similar Records
Small-angle neutron scattering from aqueous micellar solutions of a nonionic surfactant as a function of temperature
Photoionization of N,N,N[prime],N[prime]-tetramethylbenzidine in a mixed micelle of ionic and nonionic surfactants: Electron spin-echo modulation and electron spin resonance studies
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ETHERS
LIGHT SCATTERING
GLYCOLS
DIFFUSION
EXPERIMENTAL DATA
MEDIUM TEMPERATURE
MICELLAR SYSTEMS
ORGANIC POLYMERS
QUANTITY RATIO
SOLUTIONS
SOLVENTS
SURFACTANTS
ALCOHOLS
DATA
DISPERSIONS
HYDROXY COMPOUNDS
INFORMATION
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLYMERS
SCATTERING
400201* - Chemical & Physicochemical Properties