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《中国化学工程学报(英文版)》 2015-01
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Effect of starch particles on foam stability and dilational viscoelasticity of aqueous-foam

Yongqiang Zhang;Zhidong Chang;Wenli Luo;Shaonan Gu;Wenjun Li;Jianbo An;School of Chemistry and Biological Engineering, University of Science and Technology Beijing;Research Institute of Petroleum Exploration and Development,Petro China;  
Surface dilational rheological behavior and foam stability of starch/surfactant mixed solutions were studied at different starch concentrations and constant surfactant concentration. The results show that dilational viscoelasticity modulus, dilational elasticity modulus and dilational viscosity modulus increase with the concentration of starch particles. Foam stability increases with dilational viscoelasticity. Foam strength also increases with starch concentration. Starch particles play a positive effect on foam stability and dilational viscoelasticity and the effect becomes more significant as drainage proceeds. Film pictures indicate that the film with 20%(by mass) starch particles is thicker than that without starch. Starch particles gather in Plateau border and resist drainage, making the foam more stable.
【Fund】: Supported by the Petro China Company Limited Project(2011B-1303);; the National Natural Science Foundation of China(21276022);; CNPC Innovation Foundation(2012D-5006-0208)
【CateGory Index】: TQ423
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