Ultrasonic degradation of polystyrene solutions

F. Kanwal, J.J. Liggat, R.A. Pethrick

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

The degradation of narrow molar mass distribution samples of polystyrene dissolved in toluene when exposed to ultrasound are reported. The change in molar mass on exposure to the ultrasound was monitored by use of gel permeation chromatography and solution viscosity measurements. Dynamic response of the polymer molecules in solution to the ultrasonic perturbation is calculated using a modification of the Wang-Zimm theory. A good correlation between the decrease in the energy absorption predicted by theory and the decrease in the rate of degradation was observed. It is proposed that the degradation process induced by ultrasonic degradation be intimately connected with the viscoelastic response of a polymer molecule in dilute solution and is not just a consequence of the cavitation process.
LanguageEnglish
Pages445-449
Number of pages4
JournalPolymer Degradation and Stability
Volume68
Issue number3
DOIs
Publication statusPublished - 11 May 2000

Fingerprint

Polystyrenes
polystyrene
ultrasonics
Ultrasonics
degradation
Degradation
Molar mass
Polymers
gel chromatography
Molecules
Viscosity measurement
polymers
energy absorption
Energy absorption
Toluene
Gel permeation chromatography
cavitation flow
dynamic response
mass distribution
Cavitation

Keywords

  • ultrasonic
  • degradation
  • polystyrene viscoelastic relaxation

Cite this

Kanwal, F. ; Liggat, J.J. ; Pethrick, R.A. / Ultrasonic degradation of polystyrene solutions. In: Polymer Degradation and Stability. 2000 ; Vol. 68, No. 3. pp. 445-449.
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Ultrasonic degradation of polystyrene solutions. / Kanwal, F.; Liggat, J.J.; Pethrick, R.A.

In: Polymer Degradation and Stability, Vol. 68, No. 3, 11.05.2000, p. 445-449.

Research output: Contribution to journalArticle

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