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Epoxy networks based on Diglycidyl ether of bisphenol A (DGEBA) and cured with Jeffamine® (POPA) or polyamidoamine (PAA) were gamma irradiated at 25°C in air. Dose rates of 50, 200 or 2000Gyh −1 for doses up 100kGy were used. Structural changes were monitored by IR spectrophotometry, DSC and sol–gel analysis.Both networks display some common features: for I≥200Gyh −1 , reaction products...
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