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Effects of electron beam irradiation on thermal and mechanical properties of nylon 6, nylon 66 and nylon 1212

Eun Hong Park, Sang Bum Kim, Young-Tai Choi, Eun-Soo Park

Effects of electron beam (EB)-irradiation at different doses up to 600kGy on nylon 6 (PA6), nylon 66 (PA66) and nylon 1212 (PA1212) films have been investigated by FTIR, TGA, DSCand UTM. FromFTIRspectra analysis, it was found that crystallinity of PA6, PA66 and PA1212 was considerably affected upon EB irradiation.As expected both DSC melting and crystallization temperature along with percent crystallinity of PA6, PA66 and PA1212 were decreased with the EB-irradiation dose. Tensile strength of all nylon samples was significantly increased at low EB irradiation dose whereas elongation at break of sample films was decrease continuously with increasing irradiation dose. However, EB-irradiated PA6, PA66 and PA1212 exhibited somewhat improved thermal stability compared with their parent nylons.