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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >Swift heavy ion induced modifications in polypropylene
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Swift heavy ion induced modifications in polypropylene

机译：快速重离子诱导的聚丙烯改性

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The samples of polypropylene were irradiated with ~(58)Ni~(7+) (86 MeV) ion beam to analyze the swift heavy ion (SHI) induced modifications as a function of ion fluence ranging from 1 x 10~(11) to 1 x 10~(13) ions cm~(-2). Modifications in optical, chemical and structural properties of the polymer were evaluated by UV-VIS, FTIR and XRD techniques. UV-VIS absorption studies have revealed that optical energy gap decreases by 51% at the highest fluence of 1 x 10~(13) ions cm~(-2). Analysis of FTIR spectra of the virgin and irradiated samples revealed the appearance of new bands in the spectra of irradiated samples, which are attributable to O - H and C = O functions. This indicates the possible creation of simple aliphatic ketone and/or carboxylic acid moieties on irradiation. XRD spectra revealed that the virgin polypropylene is semi-crystalline in nature and there is an average decrease of ～ 24% in the crystallite size on irradiation at the highest fluence of 1 x 10~(13) ions cm~(-2).
机译：用〜（58）Ni〜（7+）（86 MeV）离子束辐照聚丙烯样品，以分析快速重离子（SHI）诱导的修饰与离子通量的函数关系，范围从1 x 10〜（11）至1 x 10〜（13）个离子cm〜（-2）通过UV-VIS，FTIR和XRD技术评估了聚合物的光学，化学和结构性能的变化。 UV-VIS吸收研究表明，在1 x 10〜（13）离子cm〜（-2）的最高通量下，光能隙减小了51％。对原始样品和辐照样品的FTIR光谱分析表明，在辐照样品的光谱中出现了新的谱带，这归因于O-H和C = O函数。这表明在辐照下可能产生简单的脂肪族酮和/或羧酸部分。 XRD谱图表明，纯聚丙烯为半结晶态，在1×10〜（13）离子cm〜（-2）的最高通量下，辐照后晶粒尺寸平均降低约24％。

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