Interfacial aspects of adhesion in polymer nanocomposite thin-film devices

Pandiyan Murugaraj, David Edward Mainwaring, Lu Guang Chen, Prashant Sawant, Mohammad Al Kobaisi, Wei Ming Yek

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7 Citations (Scopus)


Nanoscale polymeric composites are important in many new electronic technologies, including lightweight and flexible devices and sensors. The influence of surface chemical treatments, which particularly affect the adhesion properties of carbon-polyimide nanocomposite thin films, was studied with infrared spectroscopy, electron microscopy, atomic force microscopy, and contact angle measurements with respect to corresponding polyimide thin films. The contact angles showed that the inclusion of carbon initially increased the hydrophilicity, whereas a potassium hydroxide treatment increased the hydrophilicity of the pure polyimide film and the polyimide component of the nanocomposite surface without increasing the hydrophilicity of the carbon nanoparticle component. Friction-force atomic force microscopy was shown to be a powerful technique for confirming the relative wetting characteristics at the nanoscale. The lower hydrophilicity and activity of the carbon nanoparticles during adhesion reactions reduced the load at break, and this suggests that this conventional modification used for polyimides is less effective for their nanocomposite counterparts.
Original languageEnglish
Pages (from-to)1054 - 1061
Number of pages8
JournalJournal of Applied Polymer Science
Issue number2
Publication statusPublished - 2010
Externally publishedYes

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