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8 results on '"Yang, Jiacao"'

6. Substantially improving mechanical property of double percolated poly(phenylene sulfide)/poly(arylenesulfide sulfone)/graphene nanoplates composites with superior electromagnetic interference shielding performance.

Author

Chang, Chenggong, Cao, Yi, Yang, Jiacao, Zhang, Gang, Long, Shengru, Wang, Xiaojun, and Yang, Jie

Subjects
ELECTROMAGNETIC interference, CONDUCTING polymer composites, ELECTROMAGNETIC shielding, YOUNG'S modulus, SULFIDES, SULFONES, POLYPHENYLENE oxide
Abstract

The electrical conductivity and electromagnetic interference (EMI) shielding effectiveness (SE) can be conspicuously enhanced at low conductive filler contents with the formation of segregated structure in the conductive polymer composites (CPCs). Nevertheless, poor interface adhesion of segregated composites results in poor mechanical properties due to the selective distribution of conductive fillers. In this work, a flexible approach was applied to fabricate the poly(phenylene sulfide)/poly(arylene sulfide sulfone)/graphene nanoplates (GNPs) composite with a unique double percolated structure. This composite exhibits an outstanding EMI SE of 38.8 dB with only 3 wt % GNPs, which is comparable to that of the conventional segregated structure counterpart. What is more, the tensile strength and Young's modulus of double percolated composites with 3 wt % GNPs are remarkably improved by ~892 and ~274% compared to conventional segregated structure, achieving 37.7 and 1788.3 MPa, respectively. This work provides a valuable method for producing CPCs with high EMI shielding performances and outstanding mechanical properties. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48709. [ABSTRACT FROM AUTHOR]

Published
2020
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8. In-Situ Grown UiO-66-NH2Nanofibrous Membrane for Highly Effective Capture PM2.5and VOCs

Author

Wei, Zhimei, Gong, Ao, Su, Qing, Wu, Yuzhe, Zhu, Chuanren, Long, Shengru, Yang, Jie, Yang, Jiacao, and Wang, Xiaojun

Abstract

Industrial air pollutants have serious harmful effects on human health, as industry exhaust is among the main sources of air pollutants, particularly in developing countries. Thus, in this work, a novel material, oxidized poly(arylene sulfide sulfone)/UiO-66-NH2(OPASS/UiO-66-NH2) nanofibrous membrane, was developed for the removal of both volatile organic compounds (VOCs) and PM2.5via electrospinning, post-oxidation treatment, and in situ vertical growth. The result of scanning electron microscopy, Fourier transform infrared, X-ray diffraction, and X-ray photoelectron spectroscopy demonstrated that the OPASS/UiO-66-NH2nanofibrous membrane was successfully prepared. In addition, four kinds of OPASS/UiO-66-NH2nanofibrous membranes were systematically investigated to obtain the optimum one, which was treated for 15 min for UiO-66-NH2growth. It is found OPASS/UiO-66-NH2nanofibrous membrane has outstanding comprehensive performance, high filtration efficiency (99.98%), low pressure drop (120 Pa) for PM2.5removal, and high sorption capacity (30.3, 28.7, and 20.3 mg/g) to dichloromethane, toluene, and benzene. More importantly, the OPASS/UiO-66-NH2nanofibrous membrane could endure high temperatures (250 °C) and harsh environments (N-methylpyrrolidone) and still retain a stable morphology and excellent removal performance for PM2.5and VOCs. The outstanding performance of OPASS/UiO-66-NH2nanofibrous membrane shows potential for the application in high-temperature flue gas treatment.

Published
2023
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