Opto-electrical dielectrics and conductivity behavior of vinyl polymers reinforced with chitosan@graphene oxide nanomaterials for optoelectronic and biological activity

IF 2.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY The European Physical Journal Plus Pub Date : 2025-02-01 DOI:10.1140/epjp/s13360-025-06006-8

Sarah Sabah Aljelawy, Ehssan Al-Bermany, Ali Razaq Abdulridha

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Abstract

Polymer composites are an interesting project for optical devices and medical applications. The influence of modified graphene oxide (GO) nanosheets with nano-chitosan (NCS) nanomaterials on two vinyl polymers was investigated. Polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA), and polyacrylic acid (PAA) reinforced with nanomaterials to fabricated PVA-PAA/GO@NCS and PVP-PAA/GO@NCS composites. Strong interfacial interaction exhibited by Fourier-transform infrared spectroscopy. X-ray diffraction showed a semi-crystalline structure. A fine dispersion of nanomaterials was exhibited by image scanning electron microscopy. Optical and transmission electron microscopy revealed the PVA composite’s core–shell formulation, whereas the PVA composite and shrimp shell behavior of PVP composites. The dielectric constant results reduced from 18 to 10.36 for PVA composites and 10.4 to 9.3 for PVP composites. For the dielectric loss, the results enhanced from 15.50 to 1.79 and 2 to 1.4, respectively. The real and imaginary optical dielectric constants improved significantly compared with blended polymers, and composites with PVP presented better results than composites with PVA. In the PVA, the electrical conductivity of composites was enhanced compared to that of the PVP group. Interestingly, PVA nanocomposites revealed a better cytotoxic impact of up to 80% instead of 56% of PVP composites of anti-breast cancer (MTTassa). These interesting findings presented interesting materials for optoelectronic and biological applications.

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chitosan@graphene氧化纳米材料增强乙烯基聚合物的光电介质和电导率行为及其光电和生物活性

聚合物复合材料是光学器件和医疗应用的一个有趣的项目。研究了纳米壳聚糖（NCS）修饰氧化石墨烯（GO）纳米片对两种乙烯基聚合物的影响。用纳米材料增强聚乙烯吡咯烷酮（PVP）、聚乙烯醇（PVA）和聚丙烯酸（PAA）制备PVA-PAA/GO@NCS和PVP-PAA/GO@NCS复合材料。傅里叶红外光谱显示了强的界面相互作用。x射线衍射显示为半晶结构。图像扫描电镜显示纳米材料具有良好的分散性。光学显微镜和透射电镜显示了PVA复合材料的核壳结构，而PVA复合材料和PVP复合材料的虾壳行为。PVA复合材料的介电常数从18降至10.36，PVP复合材料的介电常数从10.4降至9.3。介质损耗从15.50提高到1.79，从2提高到1.4。与共混聚合物相比，复合材料的实、虚光学介电常数均有显著提高，PVP复合材料的性能优于PVA复合材料。在PVA中，复合材料的电导率比PVP组有所提高。有趣的是，PVA纳米复合材料显示出更好的细胞毒性作用，高达80%，而不是56%的PVP抗乳腺癌复合材料（MTTassa）。这些有趣的发现为光电和生物应用提供了有趣的材料。图形抽象

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.