Drainage, rupture, and lifetime of deionized water films: effect of dissolved gases?

Langmuir : the ACS Journal of Surfaces and Colloids
Phong T Nguyen, Anh V Nguyen

Abstract

Gas bubbles coalesce in deionized (DI) water because the water (foam) films between the bubbles are not stable. The so-called hydrophobic attraction has been suggested as the cause of the film instability and the bubble coalescence. In this work, microinterferometry experiments show that foam films of ultrapure DI water can last up to 10 s and the contact time between the two gas bubble surfaces at close proximity (approximately 1 microm separation distance) significantly influences the film drainage, rupture, and lifetime. Specifically, when the two bubbles were first brought into contact, the films instantly ruptured at 0.5 microm thickness. However, the film drainage rate and rupture thickness sharply decreased and the film lifetime steeply increased with increasing contact time up to 10 min, but then they leveled off. The constant thickness of film rupture was around 35 nm. Possible contamination was vigorously investigated and ruled out. It is argued that migration of gases inherently dissolved in water might cause the transient behavior of the water films at the short contact time. The film drainage rate and instability at the long contact time were analyzed employing Eriksson et al.'s phenomenological theory of long-rang...Continue Reading

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Citations

Jun 7, 2011·Advances in Colloid and Interface Science·Roger G HornSatomi Ohnishi
Jan 25, 2011·Journal of Colloid and Interface Science·Lorena A Del CastilloRoger G Horn
Aug 12, 2014·Advances in Colloid and Interface Science·Mahshid FirouziAnh V Nguyen
Aug 31, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Naoyuki IshidaHirobumi Ushijima
Jul 15, 2015·Physical Chemistry Chemical Physics : PCCP·Tiefeng PengKang Peng
Feb 12, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Vassili V YaminskyRoger G Horn
Aug 14, 2021·Advances in Colloid and Interface Science·Pouria AmaniMahshid Firouzi
Feb 13, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Jianlong WangAnh V Nguyen
Jan 13, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Ivan U VakarelskiSigurdur T Thoroddsen
Feb 8, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Seongsoo HanKwangsuk You

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