Differentiation of silane adsorption onto model E-glass surfaces from mixed solutions of amino and glycidyl silanes

X.M. Liu, J.L. Thomason, F.R. Jones

Research output: Contribution to conferencePaper

61 Downloads (Pure)

Abstract

Mixed silanes are often used as coupling agents in sizings for glass fibres. A technique has been developed which enables the preferential adsorption of a particular silane onto a model E-glass from a mixed aqueous silane solution to be probed. It is shown that γ-Aminopropyltriethoxysilane (APS) is preferentially adsorbed over γ-glycidoxypropyltrimethoxysilane (GPS) onto model E-glass fibres. High resolution X-ray photoelectron spectroscopy (XPS) has been employed to investigate the nature of silane deposits. Differentiation between the hydrolysed silane deposit and the model silica-based glass substrate was achieved by Si2p curve fitting. The extent of total silane adsorption onto model E-glass fibres was determined from the intensity of CSiO3 peak. In the case of APS/GPS mixed silanes, the N1s peak intensity provides the concentration of APS in the deposit. By comparing the relative intensities of the components in the Si2p3/2 and Si2p1/2 peaks for SiO4 and CSiO3 with the intensity of the N1s peak an assessment of differential adsorption proved possible.
Original languageEnglish
Number of pages18
Publication statusPublished - Aug 2006
Event12th European Conference on Composite Materials - Biarritz, France
Duration: 29 Aug 20061 Sep 2006

Conference

Conference12th European Conference on Composite Materials
CityBiarritz, France
Period29/08/061/09/06

Keywords

  • e-glass fibres
  • model surfaces
  • silanes
  • coupling agents
  • X-ray photoelectron spectroscopy (XPS)

Fingerprint Dive into the research topics of 'Differentiation of silane adsorption onto model E-glass surfaces from mixed solutions of amino and glycidyl silanes'. Together they form a unique fingerprint.

Cite this