Abstract
| Language | English |
|---|---|
| Pages | 445-449 |
| Number of pages | 4 |
| Journal | Polymer Degradation and Stability |
| Volume | 68 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 11 May 2000 |
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Keywords
- ultrasonic
- degradation
- polystyrene viscoelastic relaxation
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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 journal › Article
TY - JOUR
T1 - Ultrasonic degradation of polystyrene solutions
AU - Kanwal, F.
AU - Liggat, J.J.
AU - Pethrick, R.A.
PY - 2000/5/11
Y1 - 2000/5/11
N2 - 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.
AB - 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.
KW - ultrasonic
KW - degradation
KW - polystyrene viscoelastic relaxation
UR - http://dx.doi.org/10.1016/S0141-3910(00)00034-3
U2 - 10.1016/S0141-3910(00)00034-3
DO - 10.1016/S0141-3910(00)00034-3
M3 - Article
VL - 68
SP - 445
EP - 449
JO - Polymer Degradation and Stability
T2 - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
SN - 0141-3910
IS - 3
ER -