Transient study on the shear thickening behaviour of surface modified fumed silica suspensions in polypropylene glycol

• Type: Article in International Conference Proceedings Book
• Date: 2008

Authors

Galindo Rosales, FJ (Author) Other; Rubio Hernandez, FJ (Author) Other

Conference proceedings International

Title: XVTH INTERNATIONAL CONGRESS ON RHEOLOGY - THE SOCIETY OF RHEOLOGY 80TH ANNUAL MEETING, PTS 1 AND 2

Pages: 686-688

15th International Congress on Rheology/80th Annual Meeting of the Society-of-Rheology

Monterey, CA, AUG 03-08, 2008

Indexing

ISI Web of Knowledge

Scopus - 2 Citations

Other information

Authenticus ID: P-008-PH7

DOI: 10.1063/1.2964809

Abstract (EN): In this work, it is analysed the time dependent behaviour of Aerosil®R816 suspensions in polypropylene glycol with different molecular weights. On that purpose, hysteresis loops and stepwise experiments were carried out inside the reversible shear thickening region. On one hand, by means of the former, although the time dependence cannot be separated from shear rate, it can be observed rates of breakdown and rebuild of the "hydrodynamic clustering"; and, on the other hand, stepwise experiments let us analyse time response of these samples. It has been noticed that the lower the molecular weight of the polymer the quicker is the response of the sample, although it is weaker. The most relevant result is that these systems present the same "instantaneous" response when they are suddenly undergone to a certain value of shear rate, independently of the starting shear conditions. © 2008 American Institute of Physics.

Language: English

Type (Professor's evaluation): Scientific