eslam M. Abdeltwab, A. Atta, H. Al-Yousef, M. M. Abdelhamied
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引用次数: 0
摘要
为了证明复合材料的高效制造,我们采用了傅立叶变换红外光谱、扫描电子显微镜、X 射线衍射和热重分析等不同方法对薄膜进行了表征。在 20 Hz 至 6 MHz 的频率下,对聚合物 PET 和不同浓度的 Fe2O3 复合材料(PPy-Fe2O3)/PET 进行了介电性能测量。此外,为了揭示所制备复合材料的特性,还测定了 PET/(PPy-Fe2O3)复合薄膜的接触角、附着功和表面能。扫描电镜结果表明,PPy-Fe2O3 复合材料沉积在 PET 表面。水接触角从 PET 的 78.32 o 下降到 PET/6%(PPy-Fe2O3) 的 40.11 o,分散自由能从 23.9 mJ/m2 上升到 43.7 mJ/m2,极性自由能从 8.9 mJ/m2 上升到 22.3 mJ/m2。根据所得结果,Fe2O3 的浓度增加了样品的表面特征。频率为 100 Hz 时,介电常数从 PET 的 18 提高到 PET/6%(PPy-Fe2O3) 的 923,介电损耗从 24 提高到 9231,能量密度从 PET 的 7.9x10-5 J/m3 提高到 408x10-5 J/m3。TGA 结果表明,在 PET 薄膜上沉积 PPy/Fe2O3 后,热稳定性略有改变。
Fabrication, Structural Characterization, Dielectric Analysis and Thermal Properties of Novel Flexible Polymer Composite Films
The films were characterized by different methods as FTIR, SEM, XRD and TGA to prove the efficient manufacturing of the composite. The dielectric performance measurements were done at frequency of 20 Hz to 6 MHz for the polymer PET and the composite (PPy-Fe2O3)/PET with varying concentrations of Fe2O3. Moreover, to reveal the characteristics of the fabricated composite, the contact angle, the work of adhesion, surface energy of the composite PET/(PPy-Fe2O3) films were considerably determined. The SEM results support the deposition of PPy-Fe2O3 composite on the PET surface. The water contact angle drops from 78.32 o for PET to 40.11o for PET/6%(PPy-Fe2O3), while the dispersive free energy raised from 23.9 mJ/m2 to 43.7 mJ/m2and the polar free energy rises from 8.9 mJ/m2 to 22.3 mJ/m2. The concentration of Fe2O3 increased the surface features of the samples, according to the obtained results. At frequency of 100 Hz, the dielectric constant enhanced from 18 for PET to 923 for the PET/6%(PPy-Fe2O3), and the dielectric loss improved from 24 to 9231, while the energy density improved fromm 7.9x10-5 J/m3 for PET to 408x10-5 J/m3. The TGA results show marginal modifications in thermal stability after deposition the PPy/Fe2O3 on the PET film.
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.