Department of Chemical Engineering, Indian Institute of Science, Bangalore 560 012, India.
Ultrason Sonochem. 2012 May;19(3):503-8. doi: 10.1016/j.ultsonch.2011.09.003. Epub 2011 Sep 21.
Ultrasonic degradation of commercially important polymers, styrene-butadiene (SBR) rubber, acrylonitrile-butadiene (NBR) rubber, styrene-acrylonitrile (SAN), polybutadiene rubber and polystyrene were investigated. The molecular weight distributions were measured using gel permeation chromatography (GPC). A model based on continuous distribution kinetics approach was used to study the time evolution of molecular weight distribution for these polymers during degradation. The effect of solvent properties and ultrasound intensity on the degradation of SBR rubber was investigated using different pure solvents and mixed solvents of varying volatility and different ultrasonic intensities.
研究了商用重要聚合物，苯乙烯-丁二烯（SBR）橡胶、丙烯腈-丁二烯（NBR）橡胶、苯乙烯-丙烯腈（SAN）、聚丁二烯橡胶和聚苯乙烯的超声降解。使用凝胶渗透色谱（GPC）测量分子量分布。使用基于连续分布动力学方法的模型研究了这些聚合物在降解过程中分子量分布的时间演变。使用不同的纯溶剂和挥发性不同的混合溶剂以及不同的超声强度，研究了溶剂性质和超声强度对 SBR 橡胶降解的影响。
