{"title":"聚苯胺和氧化石墨纳米复合材料介电常数和抗菌性能的高频测量","authors":"Shubha L.N., ChandraBabu Putta","doi":"10.1049/nde2.12025","DOIUrl":null,"url":null,"abstract":"<p>The polyaniline/graphite oxide (PANI/GO) nanocomposite was prepared by the in situ chemical polymerisation method. The synthesis involved the formation of dark green coloured polyaniline/graphite oxide composite. The crystalline structure and morphology of the composite were studied using UV-visible spectroscopy (UV), X-ray diffraction (XRD) and transmission electron microscopy (TEM).The characteristic peaks in XRD and UV-visible spectra confirmed the formation of the PANI/GO nanocomposite. DC conductivity measurements were performed using a two-probe method. Dielectric responses of the composites were investigated in the frequency range100 MHz to 3 GHz by the RF impedance analyser. The dielectric constant <i>ϵ</i>′(<i>w</i>) and dielectric loss <i>ϵ</i>′′(<i>w</i>) were investigated. It was observed that the dielectric constant <i>ϵ</i>′(<i>w</i>) and dielectric loss <i>ϵ</i>′′(<i>w</i>) decreased with an increase in frequencies (for different wt % of GO). The antibacterial activity of this composite was examined.</p>","PeriodicalId":36855,"journal":{"name":"IET Nanodielectrics","volume":"4 3","pages":"155-161"},"PeriodicalIF":3.8000,"publicationDate":"2021-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/nde2.12025","citationCount":"1","resultStr":"{\"title\":\"High-frequency measurement of dielectric permittivity and antimicrobial properties of polyaniline and graphite oxide nanocomposites\",\"authors\":\"Shubha L.N., ChandraBabu Putta\",\"doi\":\"10.1049/nde2.12025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The polyaniline/graphite oxide (PANI/GO) nanocomposite was prepared by the in situ chemical polymerisation method. The synthesis involved the formation of dark green coloured polyaniline/graphite oxide composite. The crystalline structure and morphology of the composite were studied using UV-visible spectroscopy (UV), X-ray diffraction (XRD) and transmission electron microscopy (TEM).The characteristic peaks in XRD and UV-visible spectra confirmed the formation of the PANI/GO nanocomposite. DC conductivity measurements were performed using a two-probe method. Dielectric responses of the composites were investigated in the frequency range100 MHz to 3 GHz by the RF impedance analyser. The dielectric constant <i>ϵ</i>′(<i>w</i>) and dielectric loss <i>ϵ</i>′′(<i>w</i>) were investigated. It was observed that the dielectric constant <i>ϵ</i>′(<i>w</i>) and dielectric loss <i>ϵ</i>′′(<i>w</i>) decreased with an increase in frequencies (for different wt % of GO). The antibacterial activity of this composite was examined.</p>\",\"PeriodicalId\":36855,\"journal\":{\"name\":\"IET Nanodielectrics\",\"volume\":\"4 3\",\"pages\":\"155-161\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2021-06-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/nde2.12025\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IET Nanodielectrics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1049/nde2.12025\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IET Nanodielectrics","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1049/nde2.12025","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
High-frequency measurement of dielectric permittivity and antimicrobial properties of polyaniline and graphite oxide nanocomposites
The polyaniline/graphite oxide (PANI/GO) nanocomposite was prepared by the in situ chemical polymerisation method. The synthesis involved the formation of dark green coloured polyaniline/graphite oxide composite. The crystalline structure and morphology of the composite were studied using UV-visible spectroscopy (UV), X-ray diffraction (XRD) and transmission electron microscopy (TEM).The characteristic peaks in XRD and UV-visible spectra confirmed the formation of the PANI/GO nanocomposite. DC conductivity measurements were performed using a two-probe method. Dielectric responses of the composites were investigated in the frequency range100 MHz to 3 GHz by the RF impedance analyser. The dielectric constant ϵ′(w) and dielectric loss ϵ′′(w) were investigated. It was observed that the dielectric constant ϵ′(w) and dielectric loss ϵ′′(w) decreased with an increase in frequencies (for different wt % of GO). The antibacterial activity of this composite was examined.