Stability of triglyceride liquid films on hydrophilic and hydrophobic glasses

Journal of Colloid and Interface Science
Rosa VazquezB J Saramago

Abstract

Wetting and dewetting of solid surfaces by oily fluids were investigated in terms of the stability of the liquid film formed between an air bubble and the solid surface. With the objective of understanding how molecules with low polarity but relatively complex molecular structure behave at the solid/liquid interface, three liquid triglycerides with different chain length and saturation were chosen, namely, tributyrin, tricaprylin, and triolein. Tributyrin and tricaprylin exist in milkfat while triolein is present in vegetable oils. The stability of the liquid films may be inferred from the shape of the disjoining pressure isotherms, which represent the dependence of the disjoining pressure on the film thickness. Disjoining pressure isotherms for films of the three triglycerides on hydrophilic and hydrophobic glasses were obtained using a recently developed apparatus, based on the interferometric technique. The experimental curves are compared with the theoretical predictions of London-Hamaker. The deviations between theory and experiment are interpreted in terms of a structural component of the disjoining pressure. All triglycerides form metastable films on both hydrophilic and hydrophobic glasses which means that for disjoinin...Continue Reading

References

Jun 30, 2000·Journal of Colloid and Interface Science·M C Michalski, B J Saramago
Dec 31, 2003·Journal of Colloid and Interface Science·Rafael Correa, Benilde Saramago
Mar 23, 2005·Journal of Colloid and Interface Science·Rosa VazquezBenilde Saramago
Apr 26, 2005·Journal of Colloid and Interface Science·Rui NogueiraBenilde Saramago
Nov 1, 2005·Journal of Colloid and Interface Science·Shripad J GokhalePeter C Wayner

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Citations

Jan 11, 2014·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·P ParadisoB Saramago
Sep 23, 2014·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Patrizia ParadisoBenilde Saramago
Jan 3, 2015·Journal of Biomaterials Science. Polymer Edition·R GalanteA P Serro
May 19, 2016·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·P ParadisoA P Serro
Aug 6, 2016·Colloids and Surfaces. B, Biointerfaces·Diana SilvaBenilde Saramago
Jun 8, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Christian W J BerendsenAnton A Darhuber

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