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协同效应的废物衍生填充剂诱导高性能化聚合物极相转换

Islam Gomaa¹, Fatma Gamal^2,3, Haitham Kalil⁴

¹Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE) Suez Desert Road El-Sherouk City Cairo 11837 Egypt.

|February 12, 2026

概括

本研究介绍了一种方法,利用回收材料制造出用于介电和压电的电动聚乙烯化物 (PVDF) 混合膜. 上循环的填充剂增强了材料的质量.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

聚乙烯化物 (PVDF) 是一种多功能聚合物,在介电和压电应用中具有显著的潜力.
开发有效的方法来增强PVDF的电活性性质对于先进的能源设备至关重要.
上循环废物衍生材料提供了一种可持续的方法,用于制造聚合物复合材料的功能填充剂.

研究的目的:

开发一种可扩展的溶液造策略,用于将废物衍生的功能填充剂再循环转化为电活性PVDF混合膜.
研究碳化回收氧化物 (Rc-ZnO) 和石墨烯氧化物 (GO) 对PVDF结构和性能的协同效应.
探索这些混合膜在介电和压电应用中的潜力.

主要方法:

从使用过的碳电池中合成碳添加的回收ZnO (Rc-ZnO) 微球.
通过溶液造制造PVDF/Rc-ZnO,PVDF/GO,以及三元PVDF/Rc-ZnO/GO薄膜.
使用X射线衍射 (XRD),里埃变换红外光谱 (FT-IR) 和扫描电子显微镜 (SEM) 的表征.
介电谱学和密度功能理论 (DFT) 计算 (B3LYP/DGDZVP2) 用于分析电性和电子结构.

主要成果:

结构分析证实了PVDF中填充剂诱导的α → β相转换,GO缺陷点作为核化中心.
双填充系统显著增加了β相分数,并促进了更相互连接的多孔形态.
介电光谱学揭示了三元系统中的协同效应,导致随着频率和温度的增加,交流导电性得到增强.
DFT的计算显示,在界面混合化后,电子带间隙大幅减少,支持改善的界面极化和电荷传输.

结论:

开发的可扩展的溶液造策略有效地将废物衍生填充剂 (Rc-ZnO和GO) 升级为电动PVDF混合膜.
Rc-ZnO和GO之间的协同相互作用增强了PVDF的β相含量,多孔性和电特性.
这些混合膜在介电和压电应用中表现出有希望的性能,为先进的功能材料提供了可持续的途径.

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