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

Authors : Yaser AÇIKBAŞ

Pages : 339-345

Doi:10.18466/cbayarfbe.280591

View : 17 | Download : 21

Publication Date : 2016-12-26

Article Type : Research Paper

Abstract :In this work, t he 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 cm 2 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