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Issue 13, 2014
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Bio-inspired green surface functionalization of PMMA for multifunctional capacitors

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Abstract

Poly(methyl methacrylate) (PMMA)-based dielectric materials are of prime interest for many electronic and power devices. However, the low dielectric constant and hydrophobic nature of PMMA limit its success in many applications. This work presents an environmentally friendly approach to surface-functionalize PMMA, exploring the use of dopamine (DOPA), to develop multifunctional polymers with enhanced dielectric properties. The reaction of dopamine with plasma pre-activated PMMA was carried out in an aqueous medium without using any toxic chemicals. The functionalized PMMA films exhibited enhanced dielectric properties compared to pristine PMMA films. As an example, below 100 Hz, the dielectric constant of functionalized PMMA films increased by 70% compared to pristine PMMA films. Interestingly, functionalization changed the storage modulus and the Tg of PMMA. The enhanced dielectric properties of the functionalized PMMA films may originate from the excellent intrinsic properties of DOPA, which was effectively functionalized on the surface of PMMA.

Graphical abstract: Bio-inspired green surface functionalization of PMMA for multifunctional capacitors

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Publication details

The article was received on 12 Nov 2013, accepted on 24 Dec 2013 and first published on 03 Jan 2014


Article type: Paper
DOI: 10.1039/C3RA46592F
Citation: RSC Adv., 2014,4, 6677-6684
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    Bio-inspired green surface functionalization of PMMA for multifunctional capacitors

    V. K. Thakur, D. Vennerberg, S. A. Madbouly and M. R. Kessler, RSC Adv., 2014, 4, 6677
    DOI: 10.1039/C3RA46592F

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