Boron containing polyvinyl alcohol/ polyethylene oxide/polyvinyl pyrrolidone composites: Preparation, characterization, gamma radiation shielding and gamma radiation effect on it's thermal properties

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL Radiation Physics and Chemistry Pub Date : 2023-09-06 DOI:10.1016/j.radphyschem.2023.111261

Fehmi Saltan , Kamil Şirin , Selim Aydın , Caner Taşköprü , Yeliz Yıldırım

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Abstract

The production of PVA/PEO/PVP-B₄C and PVA/PEO/PVP-BN nanocomposites is presented in this study by adding certain proportions of boron nitride (BN) and boron carbide (B₄C) to the polyvinyl alcohol(PVA)/polyethylene Oxide (PEO)/polyvinyl pyrrolidone (PVP) blend. The percentages of BN and B₄C nano powder in the PVA/PEO/PVP blend have been determined as 5%, 10% and 20%. Thermal characterizations were carried out with different techniques such as Differential scanning calorimetry (DSC), Differential Thermal Analysis (DTA), Thermogravimetry (TG). Surface, crystal structure and atomic percentage distribution analyzes of the obtained composites were performed by X-ray Photoelectron Spectroscopy (XPS), X-Ray Diffraction Analysis (XRD), Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX), and elemental analysis. 10 kGy gamma irradiation was performed on PVA/PEO/PVP-B₄C and PVA/PEO/PVP-BN composites. The thermal behavior of the composites at this dose level was investigated. In addition, the radiation shielding properties of composite films obtained at 10 cm distances using Am-241 beam source were examined.

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含硼聚乙烯醇/聚乙烯氧化物/聚乙烯醇吡咯烷酮复合材料的制备、表征、屏蔽及对热性能的影响

在聚乙烯醇（PVA）/聚环氧乙烷（PEO）/聚乙烯吡咯烷酮（PVP）共混物中加入一定比例的氮化硼（BN）和碳化硼（B4C），制备了PVA/PEO/PVP-B4C和PVA/PEO/PVP-BN纳米复合材料。BN和B4C纳米粉末在PVA/PEO/PVP共混物中的百分比分别为5%、10%和20%。采用差示扫描量热法（DSC）、差示热分析法（DTA）、热重法（TG）等不同技术对其进行了热表征。通过X射线光电子能谱（XPS）、X射线衍射分析（XRD）、扫描电子显微镜能量分散X射线（SEM-EDX）和元素分析对所获得的复合材料进行了表面、晶体结构和原子百分比分布分析。对PVA/PEO/PVP-B4C和PVA/PEO/PVP-BN复合材料进行了10kGyγ辐照。研究了复合材料在该剂量水平下的热行为。此外，还研究了使用Am-241束源在10cm距离处获得的复合膜的辐射屏蔽性能。

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.