NDLI: Dynamic Analysis of the Removal of Fatty Acid from a Pet Surface Using a Quartz Crystal Microbalance

Content Provider	Springer Nature Link
Author	Kanasaki, Yu Kobayashi, Yasuyuki Gotoh, Keiko
Copyright Year	2016
Abstract	A quartz crystal microbalance (QCM) was used to study the removal of stearic acid from poly(ethylene terephthalate) (PET) substrate in aqueous alkali and surfactant solutions. The PET substrate was prepared on a QCM gold electrode by spin-coating; its properties were examined by scanning electron microscopy, X-ray photoelectron spectroscopy, and water contact angle measurements. As a result, the QCM electrode was found to be completely covered with a smooth PET film. To investigate the effect of soil deposition state on its removal, stearic acid (an oily soil model) was deposited onto the PET substrate with the Langmuir–Blodgett (LB) technique or by spraying. The QCM frequency was recorded during the removal of stearic acid from the PET substrate in aqueous solutions. In NaOH solution, stearic acid deposited by the LB method was more rapidly removed than when deposited by the spraying method. However, the LB films of stearic acid were difficult to be removed in surfactant solutions. With respect to removal behavior of spray-deposited stearic acid in surfactant solutions, the results determined by the QCM method were compared with those from microscopic image analysis. The removal efficiencies in the sodium dodecyl sulfate solution were in good agreement between the two methods. However, in the alkyl ethoxylate solution, the removal efficiencies obtained by the QCM method were larger than those from microscopic image analysis. These experimental results were explained by the removal mechanism of stearic acid by the alkali and surfactant solutions.
Starting Page	627
Ending Page	636
Page Count	10
File Format	PDF
ISSN	10973958
Journal	Journal of Surfactants and Detergents
Volume Number	19
Issue Number	3
e-ISSN	15589293
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-02-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Interfacial science Application of surfactants Analytical chemistry and techniques Industrial Chemistry/Chemical Engineering Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Surfaces and Interfaces, Thin Films Polymer Sciences Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Physical and Theoretical Chemistry Chemical Engineering

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