Peb siv cov ncuav qab zib los txhim kho koj qhov kev paub.Los ntawm kev txuas ntxiv mus saib lub vev xaib no, koj pom zoo rau peb siv cov ncuav qab zib.Cov ntaub ntawv ntxiv.
Halloysite nanotubes (HNT) yog ib txwm tshwm sim av nplaum nanotubes uas tuaj yeem siv rau hauv cov ntaub ntawv siab heev vim lawv cov qauv hollow tubular tshwj xeeb, biodegradability, thiab txhua yam thiab cov khoom nto.Txawm li cas los xij, kev sib dhos ntawm cov av nplaum nanotubes yog qhov nyuaj vim tsis muaj txoj hauv kev ncaj qha.
ua .Duab credit: captureandcompose/Shutterstock.com
Hauv qhov no, ib tsab xov xwm luam tawm nyob rau hauv phau ntawv journal ACS Applied Nanomaterials tawm tswv yim zoo rau kev tsim cov qauv HNT.Los ntawm ziab lawv cov aqueous dispersions siv cov hlau nplaum rotor, av nplaum nanotubes tau ua raws li cov iav substrate.
Raws li cov dej evaporates, stirring ntawm GNT aqueous dispersion tsim shear rog ntawm cov av nplaum nanotubes, ua rau lawv mus rau hauv daim ntawv ntawm kev loj hlob rings.Ntau yam cuam tshuam rau HNT qauv tau tshawb xyuas, suav nrog HNT concentration, nanotube them, ziab kub, rotor loj, thiab ntim ntim.
Ntxiv nrog rau cov yam ntxwv ntawm lub cev, scanning electron microscopy (SEM) thiab polarizing light microscopy (POM) tau siv los kawm txog cov microscopic morphology thiab birefringence ntawm HNT ntoo rings.
Cov txiaj ntsig tau pom tias thaum HNT concentration ntau dua 5 wt%, cov av nplaum nanotubes ua tiav kev sib raug zoo, thiab siab dua HNT concentration nce qhov roughness thiab thickness ntawm HNT qauv.
Tsis tas li ntawd, tus qauv HNT txhawb nqa kev sib txuas thiab kev loj hlob ntawm nas fibroblast (L929) hlwb, uas tau pom tias loj hlob raws cov av nplaum nanotube kev sib raug zoo raws li kev sib cuag-tsav.Yog li, tam sim no yooj yim thiab ceev txoj kev rau aligning HNT ntawm cov khoom substrates muaj peev xwm los tsim ib tug cell-responsive matrix.
Ib-dimensional (1D) nanoparticles xws li nanowires, nanotubes, nanofibers, nanorods thiab nanoribbons vim lawv zoo heev mechanical, hluav taws xob, optical, thermal, lom thiab sib nqus zog.
Halloysite nanotubes (HNTs) yog ntuj av nplaum nanotubes nrog ib txoj kab uas hla ntawm 50-70 nanometers thiab sab hauv kab noj hniav ntawm 10-15 nanometers nrog cov mis Al2Si2O5 (OH) 4·nH2O.Ib qho tshwj xeeb ntawm cov nanotubes no yog cov tshuaj sib txawv sab hauv / sab nraud (aluminium oxide, Al2O3 / silicon dioxide, SiO2), uas tso cai rau lawv xaiv kev hloov kho.
Vim biocompatibility thiab toxicity tsawg heev, cov av nplaum nanotubes yuav siv tau nyob rau hauv biomedical, tshuaj pleev ib ce thiab tsiaj tu daim ntaub ntawv vim av nplaum nanotubes muaj zoo heev nanosafety nyob rau hauv ntau yam cell kab lis kev cai.Cov av nplaum nanotubes no muaj qhov zoo ntawm tus nqi qis, muaj dav, thiab yooj yim silane-raws li tshuaj hloov kho.
Kev taw qhia kev sib cuag yog hais txog qhov tshwm sim ntawm kev cuam tshuam ntawm tes taw qhia raws li cov qauv geometric xws li nano/micro grooves ntawm lub substrate.Nrog rau txoj kev loj hlob ntawm cov ntaub so ntswg engineering, qhov tshwm sim ntawm kev tiv thaiv kev sib cuag tau dav siv los cuam tshuam lub morphology thiab lub koom haum ntawm cov hlwb.Txawm li cas los xij, cov txheej txheem lom neeg ntawm kev tiv thaiv raug tseem tsis meej.
Txoj haujlwm tam sim no qhia txog cov txheej txheem yooj yim ntawm kev tsim ntawm HNT kev loj hlob nplhaib qauv.Nyob rau hauv cov txheej txheem no, tom qab siv ib tug poob ntawm HNT dispersion mus rau ib puag ncig iav swb, HNT poob yog compressed ntawm ob qhov chaw sib cuag (lub swb thiab cov hlau nplaum rotor) los ua ib tug dispersion uas dhau los ntawm lub capillary.Qhov kev txiav txim yog khaws cia thiab yooj yim.evaporation ntawm cov kuab tshuaj ntau dua ntawm ntug ntawm capillary.
Ntawm no, lub zog shear tsim los ntawm kev sib nqus sib nqus rotor ua rau HNT ntawm ntug ntawm lub capillary tso rau ntawm qhov zawv zawg saum npoo ntawm qhov raug.Raws li cov dej evaporates, lub zog tiv tauj tshaj lub pinning quab yuam, thawb cov kab sib txuas mus rau qhov chaw.Yog li ntawd, nyob rau hauv lub synergistic nyhuv ntawm shear quab yuam thiab capillary quab yuam, tom qab ua tiav evaporation ntawm dej, ib tsob ntoo-ring qauv ntawm HNT yog tsim.
Tsis tas li ntawd, POM cov txiaj ntsig tau pom qhov pom tseeb ntawm qhov sib txawv ntawm cov qauv anisotropic HNT, uas cov duab SEM ua rau muaj kev sib luag ntawm cov av nplaum nanotubes.
Tsis tas li ntawd, L929 hlwb kab lis kev cai ntawm txhua xyoo-ntiv nplhaib av nplaum nanotubes nrog ntau qhov sib txawv ntawm HNT raug soj ntsuam raws li kev sib cuag-tsav mechanism.Txawm li cas los xij, L929 hlwb tau pom qhov sib faib ntawm cov av nplaum nanotubes hauv daim ntawv loj hlob rings nrog 0.5 wt.% HNT.Nyob rau hauv cov qauv ntawm av nplaum nanotubes nrog ib tug NTG concentration ntawm 5 thiab 10 wt %, elongated hlwb muaj nyob rau hauv cov kev taw qhia ntawm cov av nplaum nanotubes.
Hauv kev xaus, macroscale HNT kev loj hlob nplhaib tsim tau tsim siv tus nqi-zoo thiab cov txheej txheem tshiab los npaj cov nanoparticles kom zoo.Kev tsim cov qauv ntawm cov av nplaum nanotubes cuam tshuam loj heev los ntawm HNT concentration, kub, qhov chaw them nqi, rotor loj, thiab ntim ntim.HNT concentrations ntawm 5 mus rau 10 wt.% muab arrays ntawm av nplaum nanotubes, thaum nyob rau ntawm 5 wt.% cov arrays pom birefringence nrog ci xim.
Kev sib dhos ntawm cov av nplaum nanotubes raws li cov kev taw qhia ntawm lub zog shear raug lees paub siv SEM cov duab.Nrog rau qhov nce hauv NTT concentration, lub thickness thiab roughness ntawm NTG txheej nce.Yog li, txoj haujlwm tam sim no tau tshaj tawm txoj hauv kev yooj yim rau kev tsim cov qauv ntawm nanoparticles hla thaj chaw loj.
Chen Yu, Wu F, He Yu, Feng Yu, Liu M (2022).Ib tug qauv ntawm "ntoo rings" ntawm halloysite nanotubes sib sau ua ke los ntawm agitation yog siv los tswj cell alignment.Applied nanomaterials ACS.https://pubs.acs.org/doi/full/10.1021/acsanm.2c03255
Tsis lees paub: Cov kev xav tau hais tawm ntawm no yog cov neeg sau ntawv hauv nws tus kheej lub peev xwm thiab tsis tas yuav cuam tshuam cov kev xav ntawm AZoM.com Limited T / A AZoNetwork, tus tswv thiab tus neeg teb xov tooj ntawm lub vev xaib no.Qhov kev lees paub no yog ib feem ntawm cov ntsiab lus ntawm kev siv lub vev xaib no.
Bhavna Kaveti yog tus kws sau ntawv tshawb fawb los ntawm Hyderabad, Is Nrias teb.Nws tuav MSc thiab MD los ntawm Vellore Institute of Technology, Is Nrias teb.nyob rau hauv cov organic thiab tshuaj chemistry los ntawm University of Guanajuato, Mexico.Nws txoj haujlwm tshawb fawb muaj feem xyuam nrog kev txhim kho thiab kev sib txuas ntawm bioactive molecules raws li heterocycles, thiab nws muaj kev paub dhau los hauv ntau theem thiab ntau cov khoom sib txuas.Thaum nws tus kws kho mob tshawb fawb, nws tau ua haujlwm ntawm kev sib txuas ntawm ntau yam heterocycle-raws li khi thiab fused peptidomimetic molecules uas xav tias yuav muaj peev xwm ua kom muaj kev ua haujlwm lom neeg ntxiv.Thaum sau cov ntawv pov thawj thiab cov ntaub ntawv tshawb fawb, nws tshawb nrhiav nws txoj kev mob siab rau kev sau ntawv thiab kev sib txuas lus.
Cavity, Buffner.(Lub Cuaj Hlis 28, 2022).Halloysite nanotubes yog zus nyob rau hauv daim ntawv ntawm "ib xyoos ib ncig" los ntawm ib tug yooj yim txoj kev.AZonano.Tau txais los ntawm https://www.azonano.com/news.aspx?newsID=39733 19 Lub Kaum Hli 2022.
Cavity, Buffner."Halloysite nanotubes zus raws li 'ib xyoos ib ncig' los ntawm ib txoj kev yooj yim".AZonano.Peb Hlis 19, 2022.Peb Hlis 19, 2022.
Cavity, Buffner."Halloysite nanotubes zus raws li 'ib xyoos ib ncig' los ntawm ib txoj kev yooj yim".AZonano.Tau qhov twg los: https://www.azonano.com/news.aspx?newsID=39733.(Lub Kaum Hli 19, 2022).
Cavity, Buffner.2022. Halloysite nanotubes hlob nyob rau hauv "ib xyoos ib ncig" los ntawm ib txoj kev yooj yim.AZoNano, nkag mus rau 19 Lub Kaum Hli 2022, https://www.azonano.com/news.aspx?newsID=39733.
Hauv kev xam phaj no, AZoNano tham nrog tus xibfwb André Nel txog kev tshawb fawb tshiab uas nws tau koom nrog hauv qhov uas piav qhia txog kev txhim kho "iav npuas" nanocarrier uas tuaj yeem pab cov tshuaj nkag mus rau hauv cov qog nqaij hlav qog nqaij hlav pancreatic.
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