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SEM micrographs of the fracture surface of short-glass-fiber-reinforced resin composites aged for 6 months in three different media: (a,d) air; (b,e) distilled water; and a (c,f) 50:50 (v/v) mixture of ethanol and distilled water. The images indicate the relatively large sizes of the fiber fillers compared with the surrounding particle fillers and the separation of the fiber fillers from the resin matrix in ethanol/water (c,f) compared with the other media. Images from [41].
