Ultrasonic degradation of solutions of poly(vinyl acetate) in dioxan: The effects of the temperature and polymer concentration
作者： Mohammad Taghi Taghizadeh , Abbas Mehrdad
DOI: 10.1002/POLB.10741
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摘要: The ultrasonic degradation of poly(vinyl acetate) (PVAc) solutions was carried out in dioxan at 25, 30, 35, 40, and 45 °C to investigate the effects temperature solution concentration on rate degradation. kinetics were studied by viscometry. calculated constants indicated that PVAc decreased as increased. correlated terms concentration, temperature, vapor pressure dioxan, relative viscosity solutions. This behavior interpreted viscosity, polymer With increasing solvent increased, so entered cavitation bubbles during their growth. caused a reduction collapsing shock because cushioning effect; therefore, decreased. As increased efficiency, © 2003 Wiley Periodicals, Inc. J Polym Sci Part B: Phys 42: 445–451, 2004
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