XPS analysis of silane coupling agents and silane‐treated E‐glass fibers

Pantano, Carlo G.; Wittberg, T. N.

doi:10.1002/sia.740150809

Cited by 54 publications

(28 citation statements)

References 8 publications

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“…A linear relationship between the carbon and calcium concentrations (or equivalently the carbon 1 s and calcium 2 p photoelectron intensities) has been uncovered, on applying six commercial silane coupling agents to E-glass fibres. 36 The particular silane used in this study fits very well into the data obtained for these other silanes, and in this sense too, shows the chosen silane CH2=CHSi(OCH2CH20CH,), to be representative of the larger class of silane coupling agents.…”

Section: Resultssupporting

confidence: 76%

“…The data are consistent with application of other silane coupling agents to E-glass fibres as examined by XPS. 36 A 50 nm etch of the treated surface rapidly increases the calcium, sodium and aluminium contents ( Table 2) consistent with the existence of a thin surface film of the silane. Concomitant with the increase in alkali metal content on etching, the silicon binding energy also shifts to that of an unhydrolysed silica network (103.5 eV).…”

Section: Resultssupporting

confidence: 57%

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Silicones on glass surfaces

Bennett

Matisons

Netting

et al. 1992

Polymer International

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X-Ray photoelectron spectroscopy can be applied to the study of the bonding of highly functionalised silicones on to E-glass fibres. The adsorption of six types of silicones (hydrido, epoxy, unsaturated imino, methacryl, 'terminal' amino and 'pendant' amino) from dilute toluene solutions were compared with that of a standard silane coupling agent. The calcium concentration was found to be an effective determinant of surface coverage by the siloxanes, as well as enabling the thicknesses of the adsorbed layers to be determined.

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Section: Resultssupporting

confidence: 76%

Section: Resultssupporting

confidence: 57%

Silicones on glass surfaces

Bennett

Matisons

Netting

et al. 1992

Polymer International

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“…The presence of carbonyltype carbon indicates that part of the CO 2 formed during reaction is bound to the surface. The C-O peak at 287.1 eV is assigned to methoxy, in good agreement with the literature [35]. Though the exact bonding nature of the C x H y deposit has to be studied in more detail in the future, on the basis of the fit results, we can determine the amount of C x H y species to be 1.3 times larger than that of methoxy.…”

Section: Catalyst Characterization After Methanol Oxidationsupporting

confidence: 86%

Characterization of the synthesis and reactivity behavior of nanostructured vanadia model catalysts using XPS and vibrational spectroscopy

Heß

2006

Surface Science

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Nanostructured vanadia model catalysts, i.e. highly dispersed vanadium oxide supported on mesoporous silica SBA-15 (VO x /SBA-15), were prepared. The mechanism for the synthesis of VO x /SBA-15 was elucidated by detailed characterization of the individual synthesis steps using XPS and vibrational spectrocopy. The resulting surface vanadium oxide species (0 -2.3 V/nm 2 ), grafted on the inner pores of the SBA-15 silica matrix, consists of tetrahedrally coordinated vanadia as inferred from UV-VIS-and Raman spectroscopy. The prepared vanadia model catalysts were tested in the partial oxidation of methanol to formaldehyde yielding high formaldehyde selectivities of 94% at 350ºC. XPS and Raman analysis of the catalyst after reaction reveal the presence of methoxy as well as a significant amount of carbonaceous species on the surface. Our results demonstrate that a detailed understanding of partial oxidation reactions requires the combination of complementary spectroscopic techniques ultimately within one experimental set-up.

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“…Thus, Fig. 2 55 quantitative analysis has already been reported [7]. In the case of fibers treated at pH 10, a uniform overlayer of silane could be assumed; that is, there was a uniform attenuation of the apparent Ca and Al surface concentrations and corresponding increases in the C and N concentrations.…”

Section: Resultsmentioning

confidence: 59%

Glass fiber surface effects in silane coupling

Pantano¹,

Carman

Warner

1992

Journal of Adhesion Science and Technology

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Glass fibers with the nominal E-glass composition were synthesized with 0, 2, 4, or 6% B2.O3. The influence of the H2O3 content on aminosilane adsorption was evaluated using X-ray photoelectron spectroscopy (XPS) and zeta potential measurements. The water adsorption capacity of the silane-treated fibers was measured using a gravimetric technique. It was found that the presence of B2O3 enhanced the adsorption of aminosilane, but, more significantly, it greatly increased the water adsorption capacity of the silane-treated fibers. This effect of the B2,O3 on water adsorption was considerably less evident in the untreated fibers. The solubility of boron and aluminum appears to play a role in determining the chemical and physical structure of the silane overlayer.

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XPS analysis of silane coupling agents and silane‐treated E‐glass fibers

Cited by 54 publications

References 8 publications

Silicones on glass surfaces

Silicones on glass surfaces

Characterization of the synthesis and reactivity behavior of nanostructured vanadia model catalysts using XPS and vibrational spectroscopy

Glass fiber surface effects in silane coupling

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