期刊论文详细信息
Journal of Soft Matter
Effect of Gas Permeability and Solubility on Foam
SebastianVincent-Bonnieu1  NaceraBourada Bourada1  RouhollahFarajzadeh1 
DOI  :  10.1155/2014/145352
学科分类:物理(综合)
来源: Hindawi Publishing Corporation
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【 摘 要 】

We perform a study on the influence of gas permeability and solubility on the drainage and stability of foam stabilized with an anionic surfactant. Our study compares the foam stability for four pure gases and two gas mixtures while previous works only compared two pure gases. Drainage and foam-volume-decay rates are calculated from the experimental data and analysed. We find good agreement with existing theory as the foam stability is strongly influenced by the properties of the gas phase, in particular its solubility in the aqueous phase (measured by Henry’s solubility constant,kH) and permeability (measured by foam-film permeability coefficient,K). The foam volume decreases considerably with increasingK. Moreover, we observe that foams are more stable when a less soluble gas is added to a more soluble gas. Our analysis confirms theories linking drainage, stability, and coarsening rate. Finally, we introduce a new formulation for the foaming index that considers gas solubility and permeability.

【 授权许可】

Unknown   

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