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首页> 外文期刊>Journal of Applied Polymer Science >Characterization of degradation of polypropylene nonwovens irradiated by γ-ray
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Characterization of degradation of polypropylene nonwovens irradiated by γ-ray

机译：γ射线辐照聚丙烯无纺布的降解特性

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Polypropylene is a leading commercial, fiber-forming polymer due to its low cost and potential for making high strength fibers. As the polymer of choice in the biomedical field, polypropylene contains only two elements, namely carbon and hydrogen. As a result, it is very hydrophobic and bio-inert lacking biodegradability in the landfill. Meltblown and spunbond polypropylene nonwovens were exposed to γ-radiation doses up to 25 kGy. The changes in morphology, chemical, thermal, and tensile properties were characterized by various analytical techniques. Following γ-radiation, the FTIR spectrum illustrated an increase in carbonyl groups suggesting radio-oxidation. Additionally, there was a decrease in thermal and tensile properties indicating deterioration of the polymer.
机译：聚丙烯因其低成本和制造高强度纤维的潜力而成为领先的商业化纤聚合物。作为生物医学领域选择的聚合物，聚丙烯仅包含两种元素，即碳和氢。结果，它是非常疏水的并且是生物惰性的，在垃圾填埋场中缺乏生物可降解性。将熔喷和纺粘聚丙烯无纺布暴露于高达25 kGy的γ辐射剂量下。通过各种分析技术来表征形态，化学，热和拉伸性能的变化。 γ辐射后，FTIR光谱表明羰基增加，表明存在放射性氧化。另外，热性能和拉伸性能下降，表明聚合物劣化。

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