Skip to content
Research Article Open access CC BY 4.0

Ultrasonic Degradation of Polyvinyl Pyrrolidone (PVP): Effect of Power of Ultrasound, Temperature and Concentration

Mohammad Taghi Taghizadeh, Reza Abdollahi

Chemical Science International Journal · pp. 1–11 · Published 16 Sep 2015

10.9734/ACSJ/2015/16508

Abstract

The ultrasonic degradation of polyvinyl pyrrolidone (PVP) was carried out in a range of different concentration of polymer solution to investigate on the changes of molecular weights. Also the ultrasonic degradation at different temperatures and power of ultrasound (30-150 W) was investigated. Most of the effects involved in controlling molecular weight can be attributed to the large shear gradients and shock waves generated around collapsing cavitation bubbles. The calculated rate constants indicated that the degradation rate of the PVP solutions decreased as the temperature increased. The average molecular weight of ultrasonicated PVP was determined by measurements of relative viscosity of samples. The degradation rate of this polymer was followed by a kinetic model based on viscosity measurements. Rate constants of ultrasonic degradation were calculated, and the results showed their dependence on polymer concentration.  

Polyvinyl pyrrolidone (PVP) ultrasonic degradation viscosity rate constant

References (18)

  1. 1 Sonochemical degradation of Rhodamine B in aqueous phase: Effects of additives [DOI]
  2. 2 Ultrasound-Induced Site-Specific Cleavage of Azo-Functionalized Poly(ethylene glycol) [DOI]
  3. 3 Kinetics of p-nitrophenol degradation: effect of reaction conditions and cavitational parameters for a multiple frequency system [DOI]
  4. 4 Ultrasonic degradation of polymer solutions: 2. The effect of temperature, ultrasound intensity and dissolved gases on polystyrene in toluene [DOI]
  5. 5 Chemistry with ultrasound
  6. 6 Ultrasonic degradation of polymer solutions—III. The effect of changing solvent and solution concentration [DOI]
  7. 7 Degradation of a Water-Soluble Polymer: Molecular Weight Changes and Chain Scission Characteristics [DOI]
  8. 8 Ultrasonic degradation of water-soluble polymers [DOI]
  9. 9 Continuous distribution kinetics for ultrasonic degradation of polymers [DOI]
  10. 10 Ultrasonic intensification of chemical processing and related operations : A review
  11. 11 Mechanochemical degradation in transient elongational flow [DOI]
  12. 12 Wastewater pretreatment with ultrasonic irradiation to reduce toxicity [DOI]
  13. 13 Calculation of the rate constant for the ultrasonic degradation of aqueous solutions of polyvinyl alcohol by viscometry [DOI]
  14. 14 Mechanisms Involved During the Ultrasonically Induced Depolymerization of Chitosan: Characterization and Control [DOI]
  15. 15 Effect of temperature on the ultrasonic degradation of polyacrylamide and poly(ethylene oxide) [DOI]
  16. 16 Effect of degree of deacetylation of chitosan on the kinetics of ultrasonic degradation of chitosan [DOI]
  17. 17 Degradation of C.I. Acid Orange 7 by ultrasound enhanced ozonation in a rectangular air-lift reactor [DOI]
  18. 18 Effect of Solvent Characteristics on the Ultrasonic Degradation of Poly(vinylpyrrolidone) Studied by On‐line Monitoring [DOI]

Cited by 14

Nanofluids: Definition, Creation, and Characterization

Valery Rudyak · Fluid Mechanics and Its Applications · 2025

Energy-Guided Shape Control Towards Highly Active CeO2

Jingxia Yang, Huihui Ding, Jinjie Wang · Topics in Catalysis · 2020

Viscosity and Rheology of Nanofluids

Valery Rudyak · Fluid Mechanics and Its Applications · 2025

Preparation, characterization, and viscosity studding the single-walled carbon nanotube nanofluids

V. Ya Rudyak, A.V. Minakov, M.I. Pryazhnikov · Journal of Molecular Liquids · 2021

Intensified depolymerization using ultrasound – A review of mechanisms, reactors, operating conditions and applications

Ayushi S. Kawadkar, Parag R. Gogate · Chemical Engineering and Processing - Process Intensification · 2023

Rheological Properties of Water- and Ethylene-Glycol-Based Nanofluids with Single-Walled Carbon Nanotubes

V. Ya. Rudyak, D. S. Tret’yakov · Journal of Engineering Physics and Thermophysics · 2021

Showing 7 of 14 known citations — external sources report more than can currently be individually listed.

Article metrics

Real usage data collected on this platform.

16

Page views

0

PDF downloads

3

Outbound clicks

14

Citations

Views over time

Views by country

Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".

Traffic sources

Referring site, by host.

Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.