Sisebenzisa amakhukhi ukuthuthukisa ulwazi lwakho.Ngokuqhubeka nokuphequlula leli sayithi, uyavumelana nokusebenzisa kwethu amakhukhi.Ulwazi Olwengeziwe.
Ama-halloysite nanotubes (HNT) ama-nanotubes obumba enzeka ngokwemvelo angasetshenziswa ezintweni ezithuthukisiwe ngenxa yesakhiwo sawo esingenalutho esingenalutho, ukubola kwe-biodegradability, kanye nezakhiwo zemishini nengaphezulu.Kodwa-ke, ukuqondanisa kwalezi nanotubes zobumba kunzima ngenxa yokuntuleka kwezindlela eziqondile.
a . .Ikhredithi yesithombe: Captureandcompose/Shutterstock.com
Mayelana nalokhu, indatshana eshicilelwe kujenali i-ACS Applied Nanomaterials iphakamisa isu elisebenzayo lokwakha izakhiwo ezi-odwe ze-HNT.Ngokomisa ama-dispersions awo anamanzi usebenzisa i-rotor kazibuthe, ama-nanotubes obumba ayeqondaniswe ku-substrate yengilazi.
Njengoba amanzi ehwamuka, ukunyakaziswa kokuhlakazeka kwamanzi kwe-GNT kudala amandla okugunda kuma-nanotubes obumba, okuwenza aqondane ngendlela yamasongo okukhula.Kuphenywe izici ezihlukahlukene ezithinta iphethini ye-HNT, okuhlanganisa ukugxiliswa kwe-HNT, ukushaja kwe-nanotube, izinga lokushisa lokumisa, usayizi we-rotor, nevolumu ye-droplet.
Ngaphezu kwezinto ezibonakalayo, i-electron microscopy (SEM) yokuskena kanye ne-polarizing light microscopy (POM) isetshenzisiwe ukuze kufundwe i-microscopic morphology kanye ne-birefringence yezindandatho zokhuni ze-HNT.
Imiphumela ibonisa ukuthi uma ukugxiliswa kwe-HNT kudlula u-5 wt%, ama-nanotubes obumba athola ukuqondana okuphelele, futhi ukugxilisa kwe-HNT ephakeme kukhulisa ubuqhwaga nokujiya kwephethini ye-HNT.
Ngaphezu kwalokho, iphethini ye-HNT ikhuthaze ukunamathiselwa kanye nokwanda kwamaseli e-mouse fibroblast (L929), abonwa ekhula eduze kokuqondanisa kwe-nanotube yobumba ngokuya ngomshini oshayelwa ukuthintana.Ngakho, indlela yamanje elula nesheshayo yokuqondanisa i-HNT kuma-substrates aqinile inamandla okuthuthukisa i-matrix ephendula iseli.
Ama-nanoparticles anohlangothi olulodwa (1D) afana nama-nanowires, ama-nanotubes, ama-nanofibers, ama-nanorod nama-nanoribhoni ngenxa yezakhiwo zawo ezivelele zomshini, i-electronic, optical, thermal, biological and magnetic.
Ama-halloysite nanotubes (HNTs) ama-nanotube obumba emvelo anobubanzi obungaphandle obungama-nanometers angu-50-70 kanye nomgodi wangaphakathi wama-nanometers angu-10-15 anefomula ethi Al2Si2O5(OH)4·nH2O.Esinye sezici eziyingqayizivele zalawa ma-nanotubes ukubunjwa kwamakhemikhali okuhlukile kwangaphakathi / kwangaphandle (i-aluminium oxide, i-Al2O3 / i-silicon dioxide, i-SiO2), evumela ukuguqulwa kwabo okukhethiwe.
Ngenxa ye-biocompatibility kanye nobuthi obuphansi kakhulu, lawa ma-nanotubes obumba angasetshenziswa ekusetshenzisweni kwe-biomedical, izimonyo kanye nokunakekelwa kwezilwane ngoba ama-nanotubes obumba ane-nanosafety enhle kakhulu kumasiko ahlukahlukene weseli.Lawa ma-nanotube obumba anezinzuzo zezindleko eziphansi, ukutholakala okubanzi, kanye nokuguqulwa kwamakhemikhali okusekelwe ku-silane okulula.
Isikhombisi-ndlela sokuxhumana sibhekisela kwinto yokuthonya ukuma kweseli ngokusekelwe kumaphethini ejiyomethri afana nama-nano/micro grooves ku-substrate.Ngokuthuthuka kobunjiniyela bezicubu, ukwenzeka kokulawulwa kokuxhumana sekusetshenziswe kabanzi ukuthonya i-morphology kanye nokuhlelwa kwamaseli.Nokho, inqubo yebhayoloji yokulawula ukuchayeka isalokhu ingacacile.
Umsebenzi wamanje ubonisa inqubo elula yokwakheka kwesakhiwo sendandatho yokukhula ye-HNT.Kule nqubo, ngemva kokufaka iconsi lokuhlakazeka kwe-HNT kusilayidi esiyingilazi esiyindilinga, ukwehla kwe-HNT kucindezela phakathi kwezindawo ezimbili ezithintanayo (isilayidi nerotha kazibuthe) ukuze kube ukuhlakazwa okudlula ku-capillary.Isenzo siyalondolozwa futhi senziwe lula.ukuhwamuka kwe-solvent eyengeziwe emaphethelweni e-capillary.
Lapha, amandla okugunda akhiqizwe i-rotor kazibuthe ezungezayo abangela i-HNT emaphethelweni e-capillary ukuthi ifake endaweni eshelelayo ngendlela efanele.Njengoba amanzi ehwamuka, amandla okuxhumana adlula amandla okuphina, asunduze umugqa wokuxhumana ubheke maphakathi.Ngakho-ke, ngaphansi komphumela we-synergistic we-shear force namandla e-capillary, ngemva kokuhwamuka okuphelele kwamanzi, iphethini yendandatho yesihlahla ye-HNT iyakhiwa.
Ukwengeza, imiphumela ye-POM ibonisa i-birefringence esobala yesakhiwo se-anisotropic HNT, lezo izithombe ze-SEM ezithi zihlobene nokuqondanisa okuhambisanayo kwama-nanotubes obumba.
Ukwengeza, amaseli e-L929 akhuliswe kuma-nanotubes obumba angonyaka anendandatho ehlukene ye-HNT ahlolwe ngokusekelwe kumshini oshayelwa ukuthintana.Nakuba, amaseli e-L929 abonise ukusatshalaliswa okungahleliwe kuma-nanotubes obumba ngendlela yamasongo okukhula ano-0.5 wt.% HNT.Ezakhiweni zama-nanotubes obumba ane-NTG yokuhlushwa engu-5 no-10 wt %, amaseli amade atholakala eduze kwe-nanotubes yobumba.
Sengiphetha, imiklamo yendandatho yokukhula ye-HNT ye-macroscale yenziwe kusetshenziswa indlela engabizi kakhulu nentsha yokuhlela ama-nanoparticles ngendlela ehlelekile.Ukwakheka kwesakhiwo sama-nanotubes obumba kuthinteka kakhulu ekugxilweni kwe-HNT, izinga lokushisa, ukushaja okungaphezulu, usayizi we-rotor, nevolumu ye-droplet.Ukugxila kwe-HNT kusuka ku-5 kuye ku-10 wt.% kunikeze ama-nanotubes obumba a-odwe kakhulu, kuyilapho ku-5 wt.% lawa malungu abonisa ukuhlangana okubili okunemibala egqamile.
Ukuqondanisa ama-nanotubes obumba eduze kokuqondisa kwamandla okugunda kwaqinisekiswa kusetshenziswa izithombe ze-SEM.Ngokukhula kokugxila kwe-NTT, ukushuba kanye nokuqina kwe-NTG coating kuyanda.Ngakho-ke, umsebenzi wamanje uphakamisa indlela elula yokwakha izakhiwo ezivela ku-nanoparticles ezindaweni ezinkulu.
U-Chen Yu, Wu F, He Yu, Feng Yu, Liu M (2022).Iphethini "yezindandatho zesihlahla" zama-halloysite nanotubes ahlanganiswe ukuyaluza isetshenziselwa ukulawula ukuqondanisa kweseli.Kusetshenziswe nanomaterials ACS.https://pubs.acs.org/doi/full/10.1021/acsanm.2c03255
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UBhavna Kaveti ungumbhali wesayensi waseHyderabad, eNdiya.Uneziqu ze-MSc kanye ne-MD e-Vellore Institute of Technology, e-India.kukhemikhali yemvelo neyezokwelapha evela eNyuvesi yaseGuanajuato, eMexico.Umsebenzi wakhe wocwaningo uhlobene nokuthuthukiswa kanye nokuhlanganiswa kwama-molecule e-bioactive asekelwe kuma-heterocycles, futhi unolwazi ekuhlanganiseni kwezinyathelo eziningi kanye nezingxenye eziningi.Phakathi nocwaningo lwakhe lobudokotela, usebenze ekuhlanganiseni ama-molecule e-peptidomimetic ahlukene asekelwe ku-heterocycle ahlanganiswe futhi ahlanganisiwe okulindeleke ukuthi abe namandla okuqhubeka nokusebenza komsebenzi webhayoloji.Ngenkathi ebhala ama-dissertation namaphepha ocwaningo, wahlola uthando lwakhe lokubhala kwesayensi nokuxhumana.
I-Cavity, i-Buffner.(Septhemba 28, 2022).Ama-halloysite nanotubes akhuliswa ngendlela "yezindandatho zonyaka" ngendlela elula.Azonano.Ibuyiselwe ngomhla ka-Okthoba 19, 2022 kusukela ku-https://www.azonano.com/news.aspx?newsID=39733.
I-Cavity, i-Buffner.“Ama-halloysite nanotube akhuliswa 'njengamasongo onyaka' ngendlela elula”.Azonano.Okthoba 19, 2022.Okthoba 19, 2022.
I-Cavity, i-Buffner.“Ama-halloysite nanotube akhuliswa 'njengamasongo onyaka' ngendlela elula”.Azonano.https://www.azonano.com/news.aspx?newsID=39733.(Kusuka ngo-Okthoba 19, 2022).
I-Cavity, i-Buffner.2022. Ama-nanotube e-Halloysite akhule “kumasongo onyaka” ngendlela elula.I-AZoNano, ifinyelelwe ngomhlaka-19 Okthoba 2022, https://www.azonano.com/news.aspx?newsID=39733.
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