Most chemists regard sonochemistry as a relatively new branch of chemistry.However, applications of power ultrasound in polymer science date back to the 1930s when sonication of some natural polymers was discovered to reduct viscosity.After that ultrasonication has proved to be a very advantageous method for depolymerization of macromolocules because it simply reduces their molecular weight by splitting the most susceptible chemical bond without causing any changes in the chemical nature of the polymer.It is now well established that the prolonged exposure of solutions of macromolecules to high-energy ultrasonic waves produces a permanent reduction in the solution viscosity.The aim of the present work was to study the effect of ultrasonic input power, ultrasonic frequency and solution concentration on the degradation of polyvinyl alcohol in the aqueous solution.
|Publication status||Published - 2000|
|MoE publication type||Not Eligible|
|Event||7th Meeting of the European Society of Sonochemistry - Biarritz-Guéthary, France|
Duration: 14 May 2000 → 18 May 2000
|Conference||7th Meeting of the European Society of Sonochemistry|
|Period||14/05/00 → 18/05/00|
- polyvinyl alcohol
- aqueous solutions
Grönroos, A., Heikkinen, J., Ihalainen, J., Mursunen, H., & Sekki, H. (2000). Ultrasonic depolymerization of the polyvinyl alcohol. Abstract from 7th Meeting of the European Society of Sonochemistry, Biarritz-Guéthary, France.