•Journal•ISSN: 0387-1533
Journal of the Society of Rheology, Japan
Society of Rheology, Japan
About: Journal of the Society of Rheology, Japan is an academic journal. The journal publishes majorly in the area(s): Viscoelasticity & Rheology. Over the lifetime, 477 publications have been published receiving 1482 citations.
Topics: Viscoelasticity, Rheology, Viscosity, Polymer, Shear rate
Papers published on a yearly basis
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31 citations
25 citations
TL;DR: In this article, the effects of additives in aqueous threadlike micellar systems formed with cetyltrimethylammonium bromide (CTAB) were studied by means of dynamic viscoelastic and 1H-NMR techniques.
Abstract: The effects of additives in aqueous threadlike micellar systems formed with cetyltrimethylammonium bromide (CTAB) were studied by means of dynamic viscoelastic and 1H-NMR techniques. An additive used was an ionic aromatic compound, sodium p-toluenesulfonate (NapTS). Viscoelastic behaviors of an aqueous CTAB and NapTS system essentially agreed with those of an aqueous system sodium salicylate (NaSal). When a ratio of NapTS concentration (CS) to CTAB concentration (CD) was higher than unity, the CTAB:NapTS/W system possessed the single relaxation viscoelasticity. The longest relaxation times (τm) depended on the concentration (CS*) of NapTS in the bulk aqueous phase, whereas τm was independent of CD.
19 citations
18 citations
TL;DR: Extensional properties of high molecular weight high density polyethylene (HDPE) were studied in this paper, where the authors measured the uniaxial elongational viscosity under constant strain rate and showed that shear relaxation modulus at nonlinear region could not be separated with the terms of strain and modulus during long time period.
Abstract: Extensional properties of high molecular weight high density polyethylene(HDPE) were studied. Uniaxial elongational viscosity was measured under constant strain rate. The following conclusions were obtained.(1)Time-temperature superposition could be applied to the elongational viscosity at a constant strain at different temperatures.(2)The samples which show a remarkable strain-hardening during deformation had a good processability, i.e. narrow distribution of bottle thickness, for the blow molding.(3)Order of the magnitude of steady shear viscosity did not agree with that of maximum elongational viscosity at the same strain rate.(4)Shear relaxation modulus at non-linear region could not be separated with the terms of strain and modulus during long time period. Transient elongational viscosity calculated was good fit with experimental viscosity behavior by introducing short time process.
17 citations