Journal of Spectral Imaging,   Volume 6   Article ID a3   (2017)

Peer reviewed paper

Can attenuated total internal reflection-Fourier transform infrared be used to understand the interaction between polymers and water? A hyperspectral imaging study

  • S. Mukherjee
  • J. A. Martínez-González
  • C. P. Stallard
  • D. P. Dowling
  • A. A. Gowen
School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland

 https://orcid.org/0000-0001-5262-6732
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School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland

 https://orcid.org/0000-0002-4675-249X
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School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland

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School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland

 https://orcid.org/0000-0002-9494-2204
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 Corresponding Author
School of Biosystems and Food Engineering, University College Dublin, Belfield, Dublin 4, Ireland
[email protected]
 https://orcid.org/0000-0002-9465-0615
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This study investigates the potential use ofattenuated total internal reflection-Fourier transform infrared (ATR-FT-IR) imaging, a hyperspectral imaging modality, to investigate molecular level trends in the interaction of water with polymeric surfaces of varying hydrophobicity. The hydrophobicity of twocategories of polymeric biomaterials is characterised using contact angle (CA) measurements and their relationship with the band area of the OH stretching νs vibration ofwater over time is presented. This is supported with correlations between CA data and single wavenumber intensity values (univariate analysis). Multivariate analysis of the spectra captured at the OH stretch for all polymers is carried out using principalcomponent analysis to study the spatial variation in the interaction between the polymeric surfaces and water. Finally, a comparison between the univariate and multivariate strategies is presented to understand the interaction between polymericbiomaterials and water.

This is a corrected version of the original paper; this corrected version was published on 15 May 2017. Please see Erratum at https://doi.org/10.1255/jsi.2017.a3e.

Keywords: ATR-FT-IR, polymer, HMDSO, hydrophobicity, silicon, water, hyperspectral imaging, wetting


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