TY - GEN
T1 - Interfacial dynamics of water-in-oil microemulsion droplets
T2 - Proceedings of the Second Symposium on Dynamics in Small Confining Systems
AU - Alexandridis, Paschalis
AU - Holzwarth, Josef F.
AU - Hatton, T. Alan
PY - 1993
Y1 - 1993
N2 - The dynamic response of water-in-oil AOT microemulsion droplets to perturbations caused by rapid energy transfer has been interpreted in terms of the surfactant interface bending rigidity. The Iodine Laser Temperature Jump technique was used to rapidly (1 μs) increase the microemulsion temperature and thus disturb the system equilibrium. The dynamic relaxation to the new equilibrium position was monitored by measuring the turbidity of the microemulsion over a 1 ms time interval immediately after the temperature jump. The rate and direction of the turbidity change depended on the initial temperature, size and salt content of the water droplets. We observed characteristic times of 2 to 10 μs and attributed them to the relaxation of the surfactant interface. A bending modulus of 0.4 kT was derived for the AOT interface, using a model for the shape perturbation of a spherical interface.
AB - The dynamic response of water-in-oil AOT microemulsion droplets to perturbations caused by rapid energy transfer has been interpreted in terms of the surfactant interface bending rigidity. The Iodine Laser Temperature Jump technique was used to rapidly (1 μs) increase the microemulsion temperature and thus disturb the system equilibrium. The dynamic relaxation to the new equilibrium position was monitored by measuring the turbidity of the microemulsion over a 1 ms time interval immediately after the temperature jump. The rate and direction of the turbidity change depended on the initial temperature, size and salt content of the water droplets. We observed characteristic times of 2 to 10 μs and attributed them to the relaxation of the surfactant interface. A bending modulus of 0.4 kT was derived for the AOT interface, using a model for the shape perturbation of a spherical interface.
UR - https://www.scopus.com/pages/publications/0027149966
M3 - Conference contribution
AN - SCOPUS:0027149966
SN - 1558991859
T3 - Materials Research Society Symposium Proceedings
SP - 299
EP - 304
BT - Materials Research Society Symposium Proceedings
PB - Publ by Materials Research Society
Y2 - 30 November 1992 through 4 December 1992
ER -