TY - JOUR
T1 - Translational dynamics of water in the nanochannels of oriented chrysotile asbestos fibers
AU - Mamontov, E.
AU - Kumzerov, Yu A.
AU - Vakhrushev, S. B.
PY - 2005/6
Y1 - 2005/6
N2 - We performed a high-resolution quasielastic neutron scattering study of water dynamics in fully hydrated oriented chrysotile asbestos [chemical formula Mg3Si2O5(OH)4] fibers. The fibers possess sets of macroscopically long, parallel channels with a characteristic diameter of about 5nm. Freezing of water in the channels was observed at about 237K. Measurements at 280, 260, and 240K revealed a translational dynamics of water molecules with the relaxation time slower by more than an order of magnitude compared to bulk water. The Q dependence of the quasielastic broadening was typical of a translational diffusion motion with a distribution of jump lengths, similar to that observed in bulk water. The relaxation time showed no significant anisotropy in the measurements with the scattering vector parallel and perpendicular to the fiber axes.
AB - We performed a high-resolution quasielastic neutron scattering study of water dynamics in fully hydrated oriented chrysotile asbestos [chemical formula Mg3Si2O5(OH)4] fibers. The fibers possess sets of macroscopically long, parallel channels with a characteristic diameter of about 5nm. Freezing of water in the channels was observed at about 237K. Measurements at 280, 260, and 240K revealed a translational dynamics of water molecules with the relaxation time slower by more than an order of magnitude compared to bulk water. The Q dependence of the quasielastic broadening was typical of a translational diffusion motion with a distribution of jump lengths, similar to that observed in bulk water. The relaxation time showed no significant anisotropy in the measurements with the scattering vector parallel and perpendicular to the fiber axes.
UR - http://www.scopus.com/inward/record.url?scp=27944457336&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.71.061502
DO - 10.1103/PhysRevE.71.061502
M3 - Article
AN - SCOPUS:27944457336
SN - 1539-3755
VL - 71
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 6
M1 - 061502
ER -