Multifunctional polyvinyl alcohol/ionic liquid/silver composite for biomedical and electrical applications

IF 4 3区化学 Q2 POLYMER SCIENCE

Polymer Bulletin Pub Date : 2025-07-16 DOI:10.1007/s00289-025-05944-8

Itishree Panda, Swayam Aryam Behera

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引用次数: 0

Abstract

PVA, Silver-PVA (PVA-Ag), and Silver-PVA-ionic liquid (PVA-Ag-IL) composites were successfully synthesized and characterized to evaluate their structural, optical, morphological, electrical, and antibacterial properties using techniques such as FTIR, SEM, UV–Visible DRS, XRD, and NMR. The UV-DRS analysis showed a significant reduction in band gap from 3.38 (PVA) to 2.06 eV (PVA-Ag-IL), indicating improved light absorption. SEM and elemental mapping confirmed uniform dispersion of Ag in the IL-enhanced matrix. Electrical studies revealed that PVA-Ag-IL exhibited superior conductivity (σ_AC ~ 10⁻⁶ S/cm) and reduced impedance (R₁ = 8.68 × 10⁵ Ω·cm²), as confirmed by Nyquist plot analysis. The MIC values for PVA-Ag-IL were 1.4 mg/mL for S. aureus and 2.2 mg/mL for E. coli, significantly lower than the other two materials. Zone of inhibition diameters reached up to 21 mm for E. coli and 19 mm for S. aureus. Furthermore, PVA-Ag-IL films showed enhanced antioxidant activity (~ 73% DPPH inhibition) and low hemolysis (< 5%), confirming their biocompatibility. These results demonstrate the multifunctionality of PVA-Ag-IL films, making them highly promising for applications in antimicrobial coatings, wound healing, and bioelectronic devices.

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多功能聚乙烯醇/离子液体/银复合材料，用于生物医学和电气应用

成功合成了PVA、银-PVA （PVA- ag）和银-PVA-离子液体（PVA- ag - il）复合材料，并利用FTIR、SEM、uv -可见DRS、XRD和NMR等技术对其结构、光学、形态、电学和抗菌性能进行了表征。UV-DRS分析显示，带隙从3.38 eV （PVA）显著减小到2.06 eV (PVA- ag - il)，表明光吸收改善。SEM和元素映射证实了银在il增强基体中的均匀分散。电学研究表明，PVA-Ag-IL具有优异的电导率（σAC ~ 10⁻26 S/cm）和降低的阻抗（R₁= 8.68 × 105 Ω·cm2）， Nyquist图分析证实了这一点。PVA-Ag-IL对金黄色葡萄球菌的MIC值为1.4 mg/mL，对大肠杆菌的MIC值为2.2 mg/mL，显著低于其他两种材料。大肠杆菌和金黄色葡萄球菌的抑制区直径分别为21 mm和19 mm。此外，PVA-Ag-IL薄膜显示出增强的抗氧化活性（~ 73%的DPPH抑制）和低溶血率（< 5%），证实了它们的生物相容性。这些结果证明了PVA-Ag-IL薄膜的多功能性，使其在抗菌涂层，伤口愈合和生物电子器件方面的应用具有很大的前景。

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来源期刊

Polymer Bulletin 化学-高分子科学

CiteScore

6.00

自引率

6.20%

发文量

审稿时长

5.5 months

期刊介绍： "Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad. "Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."