Liu, X.M. and Thomason, J.L. and Jones, F.R. (2006) Differentiation of silane adsorption onto model E-glass surfaces from mixed solutions of amino and glycidyl silanes. In: 12th European Conference on Composite Materials, 2006-08-29 - 2006-09-01.
Download (273kB) | Preview
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.
|Item type:||Conference or Workshop Item (Paper)|
|Notes:||This is a variant record.|
|Keywords:||e-glass fibres, model surfaces, silanes, coupling agents, X-ray photoelectron spectroscopy (XPS), Mechanical engineering and machinery, Chemistry|
|Subjects:||Technology > Mechanical engineering and machinery
Science > Chemistry
|Department:||Faculty of Engineering > Mechanical and Aerospace Engineering|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||14 Jul 2008|
|Last modified:||17 Oct 2016 00:13|