With concerns in energy crisis and global warming, researchers are actively investigating alternative energy renewable solutions. Among the various methods, piezoelectric transduction stands out due to its impressive ...With concerns in energy crisis and global warming, researchers are actively investigating alternative energy renewable solutions. Among the various methods, piezoelectric transduction stands out due to its impressive electromechanical coupling factor and coefficient. As a result, piezoelectric energy harvesting has garnered significant attention from the scientific community. In this study, we explored methods to enhance the piezoelectric properties of polyvinylidene fluoride (PVDF) through two distinct approaches. The first approach involved applying external high voltages at various stages during the mixture reaction. The goal was to determine whether this voltage application could alter or enhance PVDF’s piezoelectric conformation by improving the alignment of polarized dipoles. In the second part of our study, we investigated the effects of incorporating various nanostructures (including Iron Oxide, Magnesium Oxide, and Zinc Oxide) into PVDF. To analyze changes in PVDF’s crystalline structure, we utilized Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Diffraction (XRD) techniques. Additionally, we measured the electric polarization of samples using a Precision LC Meter and examined the morphology of nanofibers through Scanning Electron Microscopy (SEM).展开更多
以超临界CO2流体为反应介质,通过固相接枝反应合成了具有PEG侧链的聚(苯乙烯-马来酸酐)(SMA)功能化梳状两亲共聚物(SMA-g-MPEG),用1 H NMR和FT-IR表征了SMA-g-MPEG的结构和组成。并以SMA-g-MPEG为亲水改性材料通过非溶剂诱导相分离法制...以超临界CO2流体为反应介质,通过固相接枝反应合成了具有PEG侧链的聚(苯乙烯-马来酸酐)(SMA)功能化梳状两亲共聚物(SMA-g-MPEG),用1 H NMR和FT-IR表征了SMA-g-MPEG的结构和组成。并以SMA-g-MPEG为亲水改性材料通过非溶剂诱导相分离法制备PVDF共混复合膜。表面元素分析结果表明SMA-g-MPEG共聚物中的PEG侧链在膜表面形成富集;纯水接触角测定和BSA吸附试验表明膜的亲水性和抗蛋白质污染性能得到明显的提高。展开更多
文摘With concerns in energy crisis and global warming, researchers are actively investigating alternative energy renewable solutions. Among the various methods, piezoelectric transduction stands out due to its impressive electromechanical coupling factor and coefficient. As a result, piezoelectric energy harvesting has garnered significant attention from the scientific community. In this study, we explored methods to enhance the piezoelectric properties of polyvinylidene fluoride (PVDF) through two distinct approaches. The first approach involved applying external high voltages at various stages during the mixture reaction. The goal was to determine whether this voltage application could alter or enhance PVDF’s piezoelectric conformation by improving the alignment of polarized dipoles. In the second part of our study, we investigated the effects of incorporating various nanostructures (including Iron Oxide, Magnesium Oxide, and Zinc Oxide) into PVDF. To analyze changes in PVDF’s crystalline structure, we utilized Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Diffraction (XRD) techniques. Additionally, we measured the electric polarization of samples using a Precision LC Meter and examined the morphology of nanofibers through Scanning Electron Microscopy (SEM).
文摘以超临界CO2流体为反应介质,通过固相接枝反应合成了具有PEG侧链的聚(苯乙烯-马来酸酐)(SMA)功能化梳状两亲共聚物(SMA-g-MPEG),用1 H NMR和FT-IR表征了SMA-g-MPEG的结构和组成。并以SMA-g-MPEG为亲水改性材料通过非溶剂诱导相分离法制备PVDF共混复合膜。表面元素分析结果表明SMA-g-MPEG共聚物中的PEG侧链在膜表面形成富集;纯水接触角测定和BSA吸附试验表明膜的亲水性和抗蛋白质污染性能得到明显的提高。
基金supported by the National Natural Science Foundation of China(Nos.21404124,51572303)the Program of Innovative Talent(in Science and Technology)in University of Henan Province,China(No.17HASTIT007)+3 种基金the Project of Innovation Scientists and Technicians Troop Construction Projects of Henan Province,China(No.2013259)the Project of Henan Province Key Discipline of Applied Chemistry,China(No.201218692)the Program for Innovative Research Team(in Science and Technology)in University of Henan Province,China(No.14IRTSTHN009)the Project of Science and Technology Program of Henan Province,China(No.162102310591)~~
