Samples of LDPE/modified starch blends 80/20 m/m before and after exposure to gamma rays were examined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. The effect of gamma radiation is clearly seen in the samples irradiated at a dose of 25 kGy. The main alteration in the polymeric material after exposure at the radiation range was a decrease in the mechanical properties, alterations in the chemical structure of the blend with an increase in the carbonyl and vinyl indices and the appearance of new crystalline symmetry generating a crystalline domain not existing before in the blend.
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机译：通过扫描电子显微镜（SEM），傅立叶变换红外光谱（FTIR）和X射线衍射检查暴露于伽玛射线之前和之后的LDPE /改性淀粉混合物80/20 m / m的样品。在以25 kGy剂量辐照的样品中可以清楚地看到γ辐射的影响。在辐射范围内曝光后，聚合物材料的主要变化是机械性能下降，共混物化学结构的变化，羰基和乙烯基指数的增加以及出现新的晶体对称性而不产生晶畴在混合之前存在。
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