Optimized performance of PVA-PVP membranes enhanced with SrO-La2O3 composites via ultrasound-assisted synthesis

IF 1.6 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Indian Journal of Physics Pub Date : 2024-10-06 DOI:10.1007/s12648-024-03437-4

P. Bewyn Joseph, S. K. Suresh Babu, J. Godwin Christus Selvin, Haritha Shree

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引用次数: 0

Abstract

This study investigates polymer membranes composed of polyvinyl alcohol (PVA) and poly (vinyl pyrrolidone) (PVP) embedded with metal oxides, specifically Strontium oxide (SrO) and Lanthanum oxide (La₂O₃). Composite films of PVA-PVP-SrO, PVA-PVP- La₂O₃, and PVA-PVP-SrO–La₂O₃ were developed using an ultrasound-assisted casting technique. X-ray diffraction (XRD) analysis revealed that these polymer membranes exhibit both semi-crystalline and amorphous characteristics, with crystalline peaks of SrO and La₂O₃ indicating modifications in their structural properties. The electrical properties were evaluated using an I-V source meter and impedance spectroscopy. Physical properties of the materials were studied to understand their behaviour of stress and strain. Young’s Modulus measurements revealed that PVA-PVP- La₂O₃ achieved the highest elongation value (ɛ) of 145.5. Thermal conductivity was measured using the transient hot wire method, indicated that PVA-PVP-SrO–La₂O₃ exhibited superior thermal conductivity compared to the other composites, achieving a value of 16.129 W/(m⁻¹ K⁻¹).

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超声辅助合成SrO-La2O3复合材料增强PVA-PVP膜的性能优化

本研究研究了聚乙烯醇（PVA）和聚乙烯基吡咯烷酮（PVP）嵌入金属氧化物，特别是氧化锶（SrO）和氧化镧（La2O3）的聚合物膜。采用超声辅助铸造技术制备了PVA-PVP- sro、PVA-PVP- La2O3和PVA-PVP- sro - La2O3复合膜。x射线衍射（XRD）分析表明，这些聚合物膜具有半晶和非晶两种特征，SrO和La2O3的结晶峰表明其结构性质发生了改变。电学性能用I-V源计和阻抗谱进行了评估。研究了材料的物理性质，以了解它们的应力和应变行为。杨氏模量测量表明，PVA-PVP- La2O3的延伸率最高，为145.5。用瞬态热丝法测量了热导率，结果表明，与其他复合材料相比，PVA-PVP-SrO-La2O3具有更好的热导率，达到16.129 W/(m−1 K−1)。

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来源期刊

Indian Journal of Physics 物理-物理：综合

CiteScore

3.40

自引率

10.00%

发文量

275

审稿时长

3-8 weeks

期刊介绍： Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.