Effects of additives on the foaming properties of Aculyn 22 and Aculyn 33 polymeric solutions

Bureiko, A.; Trybała, Anna; Huang, Jian; Kovalchuk, N. M.; Starov, Victor

doi:10.1016/j.colsurfa.2014.02.052

Cited by 22 publications

(24 citation statements)

References 21 publications

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“…One route towards increasing the stability of liquid foams is the addition of polymers, particles and proteins [1][2][3][4][5][6][7]. The hydrophobins are the best foam stabilizers among the proteins [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Production and characterization of stable foams with fine bubbles from solutions of hydrophobin HFBII and its mixtures with other proteins

Dimitrova

Petkov

Kralchevsky

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Hydrophobins are proteins that are excellent foam stabilizers. We investigated the effects of pH and addition of other proteins on the foaminess, bubble size, and stability of foams from aqueous solutions of the protein HFBII hydrophobin. The produced stable foams have bubbles of radii smaller than 40 µm that obey the lognormal distribution. The overrun of most foams is in the range from 5 to 8, which indicates a good foaminess. The foam longevity is characterized by the time dependences of the foam volume and weight. A combined quantitative criterion for stability, the degree of foam conservation, is proposed. The produced foams are stable for at least 12-17 days. The high foam stability can be explained with the formation of dense hydrophobin adsorption layers, which are impermeable to gas transfer and block the Ostwald ripening (foam disproportionation). In addition, the population of small bubbles formed in the HFBII solutions blocks the drainage of water through the Plateau borders in the foam. The variation of pH does not essentially affect the foaminess and foam stability. The addition of "regular" proteins, such as beta-lactoglobulin, ovalbumin and bovine serum albumin, to the HFBII solutions does not deteriorate the quality and stability of the produced foams up to 94% weight fraction of the added protein. The results and conclusions from the present study could be useful for the applications of hydrophobins as foam stabilizers.

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Section: Introductionmentioning

confidence: 99%

Production and characterization of stable foams with fine bubbles from solutions of hydrophobin HFBII and its mixtures with other proteins

Dimitrova

Petkov

Kralchevsky

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…In our researches presented below and in Refs. [9,10] the following procedures were used by Procter & Gamble Co. to produce cosmetics formulations with A22 and A33. Rheology and surface tension measurements were conducted as described in Refs.…”

mentioning

confidence: 99%

Wetting properties of cosmetic polymeric solutions on hair tresses

Trybała

Bureiko

Kovalchuk

et al. 2015

Colloids and Interface Science Communications

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“…[27] (and shown below) that the polymeric solutions of A22 and A33 are non-Newtonian power-law liquids, which show a shear-thinning behavior. For a power-law liquid dependence of the effective viscosity, µ eff , on applied shear rate is given by the well-known Ostwald-de Waele relation:…”

Section: Fig 1 Schematic Of Free Foam Drainage Experimentsmentioning

confidence: 99%

“…Incorporating polymers into foaming solutions can affect the rate of drainage and thus, efficiency of the application. Addition of polymers often increases the viscosity of foaming solutions and therefore it affects the kinetics of foam drainage and the rate of inter-bubble gas diffusion [26][27][28]. For example, polymers used in firefighting foams can significantly lengthen the drainage time by viscosifying the aqueous phase.…”

Section: Introductionmentioning

confidence: 99%

“…Despite intensive research in the field, to the best of our knowledge, only semi-empirical approaches have been developed so far and there is no comprehensive theory of foam drainage of non-Newtonian solutions. In our previous papers [26,27,31] the influence of rheology of commercially available polymers Aculyn TM 22 (A22) and Aculyn TM 33 (A33) on the free foam drainage was investigated experimentally and the results of the properties modification (polymer type, concentration, mixtures, salt and isopropanol addition) of A22 and A33 polymeric solutions were presented. Below a theory of foam drainage is presented for the non-Newtonian polymeric solutions in the case of free drainage and its results are compared with experimental data.…”

Section: Introductionmentioning

confidence: 99%

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Foams built up by non-Newtonian polymeric solutions: Free drainage

Arjmandi-Tash

Trybała

Mahdi

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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A mathematical model of free drainage of foam built up by a power-law non-Newtonian liquid is developed. The theory predictions are compared with the experimental data on the drainage of foams formed using commercially available AculynTM22 and AculynTM33 polymeric solutions. The rheological parameters of the polymeric solutions were independently measured and used in the calculations. The deduced dimensionless equations were solved using finite element method with appropriate boundary conditions. The numerical simulations show that the decrease in the foam height and liquid content is very fast in the very beginning of the drainage; however, it reaches a steady state at longer time. The predicted values of the time evolution of the foam height and liquid content are in good agreement with the measured experimental data. were solved using finite element method with appropriate boundary conditions. The numerical simulations show that the decrease in the foam height and liquid content is very fast in the very beginning of the drainage; however, it reaches a steady state at longer time. Graphical AbstractThe predicted values of the time evolution of the foam height and liquid content are in good agreement with the measured experimental data.

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Effects of additives on the foaming properties of Aculyn 22 and Aculyn 33 polymeric solutions

Cited by 22 publications

References 21 publications

Production and characterization of stable foams with fine bubbles from solutions of hydrophobin HFBII and its mixtures with other proteins

Production and characterization of stable foams with fine bubbles from solutions of hydrophobin HFBII and its mixtures with other proteins

Wetting properties of cosmetic polymeric solutions on hair tresses

Foams built up by non-Newtonian polymeric solutions: Free drainage

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