Viscoelastic properties of dibenzylidene sorbitol (DBS) physical gels at high frequencies

Paulo S. Santos, Mohamad G. Abiad, Marcelo Carignano, Osvaldo H. Campanella

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The rheological behavior of Dibenzylidene D-Sorbitol (DBS) gels formed in ethylene glycol, glycerol, mineral oil, ethanol, and chlorobenzene was studied using oscillatory squeezing flow viscometry. The storage (G ) and loss (G ) moduli were measured as a function of gellant concentration (0.5-2 w/w) and type of solvent. As expected greater values of gel strength (G ) were observed for gels containing higher concentrations of DBS. In addition, both storage and loss moduli of 2% systems were mostly frequency independent over the studied range, whereas 0.5% gels did exhibit some degree of dependence. We also found that the solvent plays an important role in the properties of the gels. Among the parameters that affect the viscoelastic properties of DBS gels, the solvent polarity and its ability to form hydrogen bonding may have significant effects on the gel rheology.

Original languageEnglish
Pages (from-to)3-11
Number of pages9
JournalRheologica Acta
Volume51
Issue number1
DOIs
Publication statusPublished - 1 Jan 2012
Externally publishedYes

Fingerprint

Gels
gels
viscometry
mineral oils
Mineral Oil
chlorobenzenes
Ethylene Glycol
Sorbitol
Mineral oils
Viscosity measurement
glycerols
dibenzylidene sorbitol
Ethylene glycol
Glycerol
Rheology
rheology
compressing
glycols
polarity
Hydrogen bonds

Keywords

  • Dibenzylidene D-sorbitol (DBS)
  • Oscillatory squeezing flow
  • Physical gel
  • Rheology
  • Viscoelasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Viscoelastic properties of dibenzylidene sorbitol (DBS) physical gels at high frequencies. / Santos, Paulo S.; Abiad, Mohamad G.; Carignano, Marcelo; Campanella, Osvaldo H.

In: Rheologica Acta, Vol. 51, No. 1, 01.01.2012, p. 3-11.

Research output: Contribution to journalArticle

Santos, Paulo S. ; Abiad, Mohamad G. ; Carignano, Marcelo ; Campanella, Osvaldo H. / Viscoelastic properties of dibenzylidene sorbitol (DBS) physical gels at high frequencies. In: Rheologica Acta. 2012 ; Vol. 51, No. 1. pp. 3-11.
@article{8513f9ed129d48a0a83bbc0e1671e98d,
title = "Viscoelastic properties of dibenzylidene sorbitol (DBS) physical gels at high frequencies",
abstract = "The rheological behavior of Dibenzylidene D-Sorbitol (DBS) gels formed in ethylene glycol, glycerol, mineral oil, ethanol, and chlorobenzene was studied using oscillatory squeezing flow viscometry. The storage (G ′) and loss (G ″) moduli were measured as a function of gellant concentration (0.5-2 w/w) and type of solvent. As expected greater values of gel strength (G ′) were observed for gels containing higher concentrations of DBS. In addition, both storage and loss moduli of 2{\%} systems were mostly frequency independent over the studied range, whereas 0.5{\%} gels did exhibit some degree of dependence. We also found that the solvent plays an important role in the properties of the gels. Among the parameters that affect the viscoelastic properties of DBS gels, the solvent polarity and its ability to form hydrogen bonding may have significant effects on the gel rheology.",
keywords = "Dibenzylidene D-sorbitol (DBS), Oscillatory squeezing flow, Physical gel, Rheology, Viscoelasticity",
author = "Santos, {Paulo S.} and Abiad, {Mohamad G.} and Marcelo Carignano and Campanella, {Osvaldo H.}",
year = "2012",
month = "1",
day = "1",
doi = "10.1007/s00397-011-0591-9",
language = "English",
volume = "51",
pages = "3--11",
journal = "Rheologica Acta",
issn = "0035-4511",
publisher = "Springer Verlag",
number = "1",

}

TY - JOUR

T1 - Viscoelastic properties of dibenzylidene sorbitol (DBS) physical gels at high frequencies

AU - Santos, Paulo S.

AU - Abiad, Mohamad G.

AU - Carignano, Marcelo

AU - Campanella, Osvaldo H.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - The rheological behavior of Dibenzylidene D-Sorbitol (DBS) gels formed in ethylene glycol, glycerol, mineral oil, ethanol, and chlorobenzene was studied using oscillatory squeezing flow viscometry. The storage (G ′) and loss (G ″) moduli were measured as a function of gellant concentration (0.5-2 w/w) and type of solvent. As expected greater values of gel strength (G ′) were observed for gels containing higher concentrations of DBS. In addition, both storage and loss moduli of 2% systems were mostly frequency independent over the studied range, whereas 0.5% gels did exhibit some degree of dependence. We also found that the solvent plays an important role in the properties of the gels. Among the parameters that affect the viscoelastic properties of DBS gels, the solvent polarity and its ability to form hydrogen bonding may have significant effects on the gel rheology.

AB - The rheological behavior of Dibenzylidene D-Sorbitol (DBS) gels formed in ethylene glycol, glycerol, mineral oil, ethanol, and chlorobenzene was studied using oscillatory squeezing flow viscometry. The storage (G ′) and loss (G ″) moduli were measured as a function of gellant concentration (0.5-2 w/w) and type of solvent. As expected greater values of gel strength (G ′) were observed for gels containing higher concentrations of DBS. In addition, both storage and loss moduli of 2% systems were mostly frequency independent over the studied range, whereas 0.5% gels did exhibit some degree of dependence. We also found that the solvent plays an important role in the properties of the gels. Among the parameters that affect the viscoelastic properties of DBS gels, the solvent polarity and its ability to form hydrogen bonding may have significant effects on the gel rheology.

KW - Dibenzylidene D-sorbitol (DBS)

KW - Oscillatory squeezing flow

KW - Physical gel

KW - Rheology

KW - Viscoelasticity

UR - http://www.scopus.com/inward/record.url?scp=84855307371&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855307371&partnerID=8YFLogxK

U2 - 10.1007/s00397-011-0591-9

DO - 10.1007/s00397-011-0591-9

M3 - Article

AN - SCOPUS:84855307371

VL - 51

SP - 3

EP - 11

JO - Rheologica Acta

JF - Rheologica Acta

SN - 0035-4511

IS - 1

ER -