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Abstract

Glass fiber-epoxy with composites were analyzed with the use of FT-IR microspectroscopy. With the use of spectral subtraction along with two-dimensional mapping experiments, spectral features characteristic of the interfacial region were revealed. Different types of glass fibers were used in order to observe spectral differences at the interphase. When as-received and heat-cleaned glass fibers were used, certain similarities were observed, although an inhibition of the curing seems to be taking place at the interfacial region of epoxy-heat-cleaned glass fibers. When the glass fibers were treated with an aminosilane coupling agent (γ-APS), there was spectral evidence that the glass surface was modifying the epoxy-glass fiber interphase.

Keywords

FT-IR microspectroscopy Interphase E-glass fiber Epoxy resin

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FT-IR Microspectroscopic Investigation of the Interphase of Epoxy Resin-Glass Fiber-Reinforced Composites

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