The Investigation of Swelling Behaviors of Copolymer Thin Films Exposed to Various Organic Vapors by Quartz Crystal Microbalance Technique

Year 2016, Volume: 12 Issue: 3, 339 - 345, 26.12.2016

Yaser Açıkbaş

Abstract

In this work, the swelling
behaviours of the poly(ClNOEMA-co-DEAEMA)
Langmuir-Blodgett
(LB) films were investigated with respect to volatile organic compounds (VOCs)
at room temperature by using Quartz Crystal Microbalance (QCM) method. The
changes in resonance frequency associated with mass changes can be attributed
to the swelling behaviour of copolymer thin films during vapor absorption. The diffusion coefficients are
found to be 31.07 x 10⁻¹⁶, 15.61 x 10⁻¹⁶ and 1.22 x 10⁻¹⁶
cm² s⁻¹ for dichloromethane, chloroform, and benzene,
respectively. The response of
copolymer LB films to the choosed VOCs has been investigated in conditions of
physical properties of the solvents, and the films were obtain to be largely
sensitive to dichloromethane vapor compared to other studied vapors.

Keywords

Swelling, Diffusion, LB thin film, QCM technique, Copolymer

References

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