Effect of colloidal silica dispersions on the properties of PDMS-colloidal silica composites

Dinkar Sumi, A. Dhanabalan, B. H.S. Thimmappa, Sriram Krishnamurthy

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Polydimethylsiloxane (PDMS) colloidal silica composites prepared with the use of the dispersion of colloidal silica (CS) of similar particle size and distribution in different mediums/solvents are investigated for their rheological, thermal, and mechanical properties. Regardless of the dispersion medium of CS, thermal analysis showed the increased thermal stability of PDMS with the addition of CS. The rheological analysis showed that the composites prepared from CS dispersed in isopropanol (IPA) and CS dispersed in methylethylketone (MEK) showed significant enhancement in viscosity at higher loadings as compare with the composite prepared from the CS dispersed in water and methanol indicating more Filler-polymer interactions. Similarly, the tensile stress-strain curves, hardness, and tear strength displayed significant improvement with PDMS-CS-MEK and PDMS-CS-IPA composites. The results of this study not only provide the insights of solid-liquid-liquid interface leading to different extent of polymer-filler interaction, there by the bulk properties, it also helps to minimize the surface treatment steps while preparing the composites.

Original languageEnglish
JournalJournal of Applied Polymer Science
Volume125
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 25-07-2012

Fingerprint

Polydimethylsiloxane
Dispersions
Silicon Dioxide
Silica
Composite materials
2-Propanol
Fillers
Polymers
baysilon
Liquids
Stress-strain curves
Tensile stress
Thermoanalysis
Methanol
Surface treatment
Thermodynamic stability
Thermodynamic properties
Hardness
Particle size
Viscosity

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cite this

@article{6f6048c3d1f54d67985137b394e0f0c8,
title = "Effect of colloidal silica dispersions on the properties of PDMS-colloidal silica composites",
abstract = "Polydimethylsiloxane (PDMS) colloidal silica composites prepared with the use of the dispersion of colloidal silica (CS) of similar particle size and distribution in different mediums/solvents are investigated for their rheological, thermal, and mechanical properties. Regardless of the dispersion medium of CS, thermal analysis showed the increased thermal stability of PDMS with the addition of CS. The rheological analysis showed that the composites prepared from CS dispersed in isopropanol (IPA) and CS dispersed in methylethylketone (MEK) showed significant enhancement in viscosity at higher loadings as compare with the composite prepared from the CS dispersed in water and methanol indicating more Filler-polymer interactions. Similarly, the tensile stress-strain curves, hardness, and tear strength displayed significant improvement with PDMS-CS-MEK and PDMS-CS-IPA composites. The results of this study not only provide the insights of solid-liquid-liquid interface leading to different extent of polymer-filler interaction, there by the bulk properties, it also helps to minimize the surface treatment steps while preparing the composites.",
author = "Dinkar Sumi and A. Dhanabalan and Thimmappa, {B. H.S.} and Sriram Krishnamurthy",
year = "2012",
month = "7",
day = "25",
doi = "10.1002/app.36226",
language = "English",
volume = "125",
journal = "Journal of Applied Polymer Science",
issn = "0021-8995",
publisher = "John Wiley and Sons Inc.",
number = "SUPPL. 1",

}

Effect of colloidal silica dispersions on the properties of PDMS-colloidal silica composites. / Sumi, Dinkar; Dhanabalan, A.; Thimmappa, B. H.S.; Krishnamurthy, Sriram.

In: Journal of Applied Polymer Science, Vol. 125, No. SUPPL. 1, 25.07.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of colloidal silica dispersions on the properties of PDMS-colloidal silica composites

AU - Sumi, Dinkar

AU - Dhanabalan, A.

AU - Thimmappa, B. H.S.

AU - Krishnamurthy, Sriram

PY - 2012/7/25

Y1 - 2012/7/25

N2 - Polydimethylsiloxane (PDMS) colloidal silica composites prepared with the use of the dispersion of colloidal silica (CS) of similar particle size and distribution in different mediums/solvents are investigated for their rheological, thermal, and mechanical properties. Regardless of the dispersion medium of CS, thermal analysis showed the increased thermal stability of PDMS with the addition of CS. The rheological analysis showed that the composites prepared from CS dispersed in isopropanol (IPA) and CS dispersed in methylethylketone (MEK) showed significant enhancement in viscosity at higher loadings as compare with the composite prepared from the CS dispersed in water and methanol indicating more Filler-polymer interactions. Similarly, the tensile stress-strain curves, hardness, and tear strength displayed significant improvement with PDMS-CS-MEK and PDMS-CS-IPA composites. The results of this study not only provide the insights of solid-liquid-liquid interface leading to different extent of polymer-filler interaction, there by the bulk properties, it also helps to minimize the surface treatment steps while preparing the composites.

AB - Polydimethylsiloxane (PDMS) colloidal silica composites prepared with the use of the dispersion of colloidal silica (CS) of similar particle size and distribution in different mediums/solvents are investigated for their rheological, thermal, and mechanical properties. Regardless of the dispersion medium of CS, thermal analysis showed the increased thermal stability of PDMS with the addition of CS. The rheological analysis showed that the composites prepared from CS dispersed in isopropanol (IPA) and CS dispersed in methylethylketone (MEK) showed significant enhancement in viscosity at higher loadings as compare with the composite prepared from the CS dispersed in water and methanol indicating more Filler-polymer interactions. Similarly, the tensile stress-strain curves, hardness, and tear strength displayed significant improvement with PDMS-CS-MEK and PDMS-CS-IPA composites. The results of this study not only provide the insights of solid-liquid-liquid interface leading to different extent of polymer-filler interaction, there by the bulk properties, it also helps to minimize the surface treatment steps while preparing the composites.

UR - http://www.scopus.com/inward/record.url?scp=84859564589&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84859564589&partnerID=8YFLogxK

U2 - 10.1002/app.36226

DO - 10.1002/app.36226

M3 - Article

AN - SCOPUS:84859564589

VL - 125

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

SN - 0021-8995

IS - SUPPL. 1

ER -