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首页> 外文期刊>Journal of Materials Engineering and Performance >XRD and SEM Investigation of Swift Heavy Ion-Irradiated Polyvinylidene Fluoride Thin Films
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XRD and SEM Investigation of Swift Heavy Ion-Irradiated Polyvinylidene Fluoride Thin Films

机译：快速重离子辐照聚偏氟乙烯薄膜的XRD和SEM研究

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摘要

Polyvinylidene fluoride (PVDF) films of different thicknesses are irradiated with 100 meV Ag-ion and 75 meV Oxygen-ion beams at different fluences to study the effects of swift heavy ion (SHI) irradiation in PVDF. The change in physical, chemical, and surface morphological properties of irradiated films are investigated using x-ray diffraction, Field emission scanning electron microscopy (FESEM), and energy dispersive analysis by x-ray (EDAX) techniques by taking unirradiated (pristine) films as reference. The diffraction pattern shows that PVDF polymer is in semi-crystalline form and possesses crystalline α-, β-, and γ-phases. A decrease in the crystallinity and crystallite size has been observed when PVDF is irradiated with 100 meV Ag-, and also Oxygen ions at a higher fluence of 5.675 × 10~(12) ions/cm~2. However, an increase in crystallinity and decrease in crystallite size are observed when PVDF is irradiated with oxygen-ion beam at lower fluence 5.625 × 10~(11) ions/cm~2. The structural parameters such as degree of crystallinity, crystallite size, microstrain, and dislocation density have also been estimated. EDAX result shows that the chemical composition of PVDF is invariant under SHI irradiation, which is in agreement with our earlier results of FTIR. FESEM analysis shows granular microstructure with small porosity on SHI irradiation.
机译：以不同的通量分别以100 meV的Ag离子和75 meV的氧离子束辐照不同厚度的聚偏二氟乙烯（PVDF）膜，以研究快速重离子（SHI）辐照在PVDF中的作用。使用X射线衍射，场发射扫描电子显微镜（FESEM）和X射线（EDAX）技术对未辐照（原始）膜进行能量色散分析，研究辐照膜的物理，化学和表面形态特性的变化。作为参考。衍射图表明PVDF聚合物为半结晶形式，并具有结晶α-，β-和γ-相。当用100 meV Ag-和PV离子以5.675×10〜（12）离子/ cm〜2的更高通量辐照PVDF时，观察到结晶度和微晶尺寸的减小。但是，当用氧离子束以较低的通量5.625×10〜（11）离子/ cm〜2照射PVDF时，会观察到结晶度的增加和晶粒尺寸的减小。还已经估算了结构参数，例如结晶度，微晶尺寸，微应变和位错密度。 EDAX结果表明，在SHI照射下，PVDF的化学成分是不变的，这与我们先前的FTIR结果一致。 FESEM分析显示，在SHI辐照下具有小孔隙率的颗粒状微观结构。

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