title: Dynamics of ultrasonically induced birefringence of in rod-like colloidal solutions.
abstract: This review summarized our experimental studies of ultrasonically induced birefringence on aqueous solution of rigid rod-like colloids and rod-like micelles from the view point of dynamics of particle orientation. For rigid rod-like colloids in dilute concentration, the orientational relaxation time was described in terms of the Debye-Einstein equation. This indicated that the ultrasonically induced birefringence could be one of useful tools for determining the size of particles of anisotropic shape. For rod-like micelles, the birefringence showed anomalous damping oscillation when the rod-like micelle was in an entangling state. The mechanism of damping oscillation was discussed using the results of the rheological measurements.
authors.affiliation: Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan. matsuoka@nuce.nagoya-u.ac.jp
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Matsuoka
authors.forename: Keiji
authors.initials: K
authors.lastname: Yasuda
authors.forename: Ken
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Shinobu
authors.initials: S
authors.lastname: Koda
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Nomura
mesh_terms: D001718:Birefringence; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D003102:Colloids / Q000737:chemistry*; D007700:Kinetics; D008823:Micelles; D008956:Models, Chemical; D012212:Rheology / Q000379:methods; D012980:Sodium Salicylate / Q000737:chemistry; D012996:Solutions / Q000737:chemistry*; D013696:Temperature; D014465:Ultrasonics; D014867:Water / Q000737:chemistry
chemical_list: D002593:Cetrimonium Compounds; D003102:Colloids; D008823:Micelles; D012996:Solutions; D014867:Water; D012980:Sodium Salicylate; D000077286:Cetrimonium