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首页> 外文期刊>Journal of Polymers and the Environment >Effect of Electron-Beam Radiation and Other Sterilization Techniques on Structural, Mechanical and Microbiological Properties of Thermoplastic Starch Blend
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Effect of Electron-Beam Radiation and Other Sterilization Techniques on Structural, Mechanical and Microbiological Properties of Thermoplastic Starch Blend

机译：电子束辐射和其他灭菌技术对热塑性淀粉混合物结构，机械和微生物性能的影响

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摘要

This work investigates the potential application of various sterilization methods for microorganism inactivation on the thermoplastic starch blend surface. The influence of the e-beam and UV radiation, ethanol, isopropanol and microwave autoclave on structural and packaging properties were studied. All the applied methods were successful in the inactivation of yeast and molds, however only the e-beam radiation was able to remove the bacterial microflora. The FTIR analysis revealed no significant changes in the polymer structure, nevertheless, a deterioration of the mechanical properties of the blend was observed. The least invasive method was the UV radiation which did not affect the mechanical parameters and additionally improved the barrier properties of the tested material. Moreover, it was proved that during the e-beam radiation the chain scission and cross-linking occurred. The non-irradiated and irradiated samples were subjected to the enzymatic degradation studies performed in the presence of amylase. The results indicated that irradiation accelerated the decomposition of material, which was confirmed by the measurements of weight loss, and mass of glucose and starch released to the solution in the course of biodegradation, as well as the FTIR and thermal analysis.
机译：该工作研究了各种灭菌方法对热塑性淀粉混合物表面上的微生物失活的潜在应用。研究了电子束和紫外辐射，乙醇，异丙醇和微波高压釜对结构和包装性能的影响。所有所应用的方法都是成功的酵母和模具的灭活，然而，只有电子束辐射能够去除细菌微生物。 FTIR分析显示在聚合物结构中没有显着变化，然而，观察到共混物的机械性能的劣化。侵入性方法是不影响机械参数的UV辐射，并且另外改善了测试材料的阻挡性能。此外，证明了在电子束辐射期间，将发生链裂化和交联。对淀粉酶存在进行的非照射和辐照样品进行酶促降解研究。结果表明，照射加速了材料的分解，通过测量重量损失，以及在生物降解过程中释放到溶液中的葡萄糖和淀粉的质量，以及FTIR和热分析。

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