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The differential adsorption of silanes from solution onto model E-glass surfaces using high resolution XPS

Jones, F.R. and Liu, X.M. and Thomason, J.L. (2007) The differential adsorption of silanes from solution onto model E-glass surfaces using high resolution XPS. In: Silanes and Other Coupling Agents. VSP International Science Publishers, pp. 29-37. ISBN 978-9067-64452-5

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    Abstract

    γ-aminopropyltriethoxysilane (APS), γ-mercaptopropyltrimethoxysilane (MPS) and their mixture have been adsorbed onto acid-treated model E-glass fibres from aqueous solution with different concentrations. High resolution X-ray photoelectron spectroscopy (XPS) has been employed to characterize APS and MPS single silane coatings and the selective adsorption of APS/MPS mixed silane coating. It is found that the Si contribution from the silane can be distinguished from the Si contribution from the acid-treated E-glass fibres by fitting Si2p1/2 and Si2p3/2 peaks with components for CSiO3 and SiO4 environments. The adsorption isotherms of APS and MPS have been obtained by comparing the atomic concentrations of N, S and CSiO3 groups. APS and MPS are equally adsorbed from 0.1% APS/MPS mixed silane solution, however, MPS dominates the deposit on model E-glass fibres to a depth corresponding to the take-off-angle of 45º when it is adsorbed from 0.5% and 1.0% APS/MPS mixed silane solutions.

    Item type: Book Section
    ID code: 6495
    Keywords: E-glass fibres, model E-glass surfaces, silanes, coatings, adsorption, XPS, Mechanical engineering and machinery
    Subjects: Technology > Mechanical engineering and machinery
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 14 Jul 2008
    Last modified: 13 Mar 2012 17:03
    URI: http://strathprints.strath.ac.uk/id/eprint/6495

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