Direct monitoring of silane/epoxy interphase chemistry
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TextSeries: ; Composites Part A: Applied Science and Manufacturing, 29(5-6), p.495-502 , 1998Contained works: - Connell, M.E
- Cross, W.M
- Snyder, T.G
- Winter, R.M
- Kellar, J.J
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Evanescent wave spectroscopy has been used to directly monitor the interactions between an epoxy resin and an amino silane coupling agent, -aminopropyltrimethoxy silane (-APS)adsorbed on silica fibers. First, it was shown that reactions of the adsorbed silane molecules could be monitored as a function of drying at elevated temperature. Next, the silane surface treated fibers were embedded in the epoxy resin and the primary amine reactivity of the silane at 70°C was measured by the decrease from the initial absorbance height of the combination band at 4925 cm-1. It was found that there was a decrease of 13
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