Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ibikoresho bigezweho n’ubuhanga mu bya shimi, kaminuza yubumenyi n’ikoranabuhanga (UST), Daejeon, 34113 Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ibikoresho bigezweho n’ubuhanga mu bya shimi, kaminuza yubumenyi n’ikoranabuhanga (UST), Daejeon, 34113 Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ibikoresho bigezweho n’ubuhanga mu bya shimi, kaminuza yubumenyi n’ikoranabuhanga (UST), Daejeon, 34113 Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ibikoresho bigezweho n’ubuhanga mu bya shimi, kaminuza yubumenyi n’ikoranabuhanga (UST), Daejeon, 34113 Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ibikoresho bigezweho n’ubuhanga mu bya shimi, kaminuza yubumenyi n’ikoranabuhanga (UST), Daejeon, 34113 Repubulika ya Koreya
Ikigo cya Koreya gishinzwe ikoranabuhanga mu buhanga (KRICT) Ikigo cy’ubushakashatsi bw’ibinyabuzima cya Biobase, Ulsan, 44429, Repubulika ya Koreya
Ibikoresho bigezweho n’ubuhanga mu bya shimi, kaminuza yubumenyi n’ikoranabuhanga (UST), Daejeon, 34113 Repubulika ya Koreya
Koresha umurongo uri munsi kugirango usangire inyandiko yuzuye yiyi ngingo hamwe nabagenzi bawe na bagenzi bawe.wige byinshi.
Kubera icyorezo cya coronavirus hamwe nibibazo bifitanye isano nuduce duto (PM) mu kirere, icyifuzo cya masike cyiyongereye cyane.Nyamara, mask gakondo ya filteri ishingiye kumashanyarazi ahamye hamwe na sano ya nano byose birashobora gutabwa, ntibishobora kwangirika cyangwa kubisubiramo, bizatera ibibazo bikomeye byimyanda.Byongeye kandi, iyambere izatakaza imikorere yayo mubihe bitose, mugihe iyanyuma izakorana nigabanuka ryumuyaga mwinshi kandi ugereranije no kwihuta kwifata bizabaho.Hano, ibinyabuzima bishobora kwangirika, bitagira ubushuhe, bihumeka cyane, bikora cyane fibre mask ya filter yakozwe.Muri make, fibre ebyiri za biodegradable fibre na mato ya nanofibre byinjijwe mumashanyarazi ya Janus membrane, hanyuma bigashyirwa hamwe na chitosan nanowhiskers yashizwemo.Akayunguruzo gakora neza nkubucuruzi bwa N95 kandi bushobora gukuraho 98.3% ya 2.5 µm PM.Nanofibers yerekana ibice byiza, kandi fibre ultrafine itanga itandukaniro rito rya 59 Pa, ikwiriye guhumeka kwabantu.Bitandukanye no kugabanuka gukabije kwimikorere yubucuruzi N95 iyungurura iyo ihuye nubushuhe, gutakaza imikorere yiyi filteri ni ntangarugero, birashobora rero gukoreshwa inshuro nyinshi kuko dipole ihoraho ya chitosan adsorbs ultrafine PM (urugero, azote).Na okiside ya sulfure).Ni ngombwa ko akayunguruzo kangirika rwose mu butaka bwifumbire mu byumweru 4.
Icyorezo cya coronavirus nticyigeze kibaho (COVID-19) kirimo gukenera masike.Ishami ry'Umuryango w'Abibumbye ryita ku Buzima (OMS) rivuga ko buri kwezi uyu mwaka hakenerwa masike y’ubuvuzi miliyoni 89.[1] Ntabwo inzobere mu buvuzi zikeneye gusa masike ya N95 ikora neza, ariko masike-rusange rusange kubantu bose nayo yabaye ibikoresho byingirakamaro bya buri munsi byo gukumira iyi ndwara yandurira mu myanya y'ubuhumekero.[1] Byongeye kandi, minisiteri zibishinzwe zirasaba cyane ko hakoreshwa masike ikoreshwa buri munsi, [1] ibi byateje ibibazo by’ibidukikije bijyanye n’imyanda myinshi ya mask.
Kubera ko ibintu bito (PM) ari cyo kibazo cy’imyuka ihumanya ikirere cyane, masike yabaye ingamba zifatika ziboneka ku bantu.PM igabanijwemo PM2.5 na PM10 ukurikije ingano yingingo (2,5 na 10 mm), bigira ingaruka zikomeye kubidukikije [2] ndetse nubuzima bwabantu muburyo butandukanye.Buri mwaka, PM itera impfu za miliyoni 4.2 na miliyoni 103.1 z’ubumuga zahinduye imyaka y'ubuzima.[2] PM2.5 ibangamiye cyane ubuzima kandi igenwa kumugaragaro nkitsinda rya kanseri.[2] Kubwibyo, ni mugihe kandi ni ngombwa gukora ubushakashatsi no guteza imbere filteri ya mask ikora neza mubijyanye no guhumeka ikirere no gukuraho PM.[3]
Muri rusange, filteri ya fibre gakondo ifata PM muburyo bubiri butandukanye: binyuze mumashanyarazi ashingiye kuri nanofibers na electrostatike adsorption ishingiye kuri microfibre (Ishusho 1a).Imikoreshereze ya nanofiber ishingiye kuyungurura, cyane cyane materi ya electrospun nanofiber, yerekanye ko ari ingamba zifatika zo gukuraho PM, ibyo bikaba ibisubizo byibintu byinshi biboneka hamwe nuburyo bugenzurwa nibicuruzwa.Mat 3 ya nanofibre irashobora gukuraho ibice byubunini bwintego, biterwa nubunini butandukanye hagati yuduce na pore.[3] Nyamara, fibre nini ya nano igomba guhunikwa cyane kugirango ibe utwobo duto cyane, twangiza guhumeka neza kwabantu kubera itandukaniro ryumuvuduko ukabije.Mubyongeyeho, utwobo duto byanze bikunze tuzahagarikwa byihuse.
Ku rundi ruhande, materi ya ultra-nziza ya fibre ya elegitoronike yishyurwa n'amashanyarazi n'umuriro w'amashanyarazi ufite ingufu nyinshi, kandi uduce duto cyane twafashwe na adsorption ya electrostatike.[4] Nkurugero ruhagarariye, ubuhumekero bwa N95 nubuhumekero bwungurura ibice-mask yubuhumekero bwujuje ibyangombwa byikigo cyigihugu gishinzwe umutekano n’ubuzima kuko gishobora gushungura byibuze 95% by’ibice byo mu kirere.Ubu bwoko bwa filteri bukurura ultrafine PM, ubusanzwe igizwe nibintu bya anionic nka SO42− na NO3−, binyuze mumashanyarazi akomeye.Nyamara, igipimo gihamye hejuru ya materi ya fibre gishobora gukwirakwira mu buryo bworoshye ahantu hashyuha, nko kuboneka mu guhumeka neza kwabantu, [4] bigatuma ubushobozi bwa adsorption bugabanuka.
Kugirango turusheho kunoza imikorere yo kuyungurura cyangwa gukemura ubucuruzi hagati yo gukuraho neza no kugabanuka k'umuvuduko, muyunguruzi ishingiye kuri nanofibre na microfibers ihujwe nibikoresho bya k-byinshi, nk'ibikoresho bya karubone, ibyuma bya organic organique, na nanoparticles ya PTFE.[4] Icyakora, uburozi bwibinyabuzima butazwi no gukwirakwiza amafaranga yinyongera biracyari ibibazo bidashoboka.[4] By'umwihariko, ubu bwoko bubiri bwayunguruzo gakondo ntibusanzwe bwangirika, kuburyo amaherezo bazashyingurwa mumyanda cyangwa gutwikwa nyuma yo kuyikoresha.Kubwibyo, iterambere rya mask yungurujwe kugirango ikemure ibyo bibazo byimyanda kandi icyarimwe ifate PM muburyo bushimishije kandi bukomeye nikintu cyingenzi gikenewe muri iki gihe.
Kugirango dukemure ibibazo byavuzwe haruguru, twakoze akayunguruzo ka Janus membrane gahujwe na poly (butylene succinate) ishingiye (ishingiye kuri PBS) [5] microfiber na materi ya nanofiber.Akayunguruzo ka Janus gatwikiriwe na chitosan nano whiskers (CsWs) [5] (Ishusho 1b).Nkuko twese tubizi, PBS ni polymer ihagarariye biodegradable polymer, ishobora kubyara fibre ultrafine na nanofiber nonwovens binyuze muri electrospinning.Nano-fibre fibre ifata PM mumubiri, mugihe micro-nini ya nano-fibre igabanya umuvuduko ukabije kandi ikora nkurwego rwa CsW.Chitosan ni ibikoresho bishingiye kuri bio byagaragaye ko bifite imiterere-karemano y’ibinyabuzima, harimo ibinyabuzima, ibinyabuzima ndetse n’uburozi buke, [5] bishobora kugabanya amaganya ajyanye no guhumeka ku buryo butunguranye ku bakoresha.[5] Mubyongeyeho, chitosan ifite imbuga za cationic hamwe na polar amide matsinda.[5] Ndetse no mubihe bitose, irashobora gukurura polar ultrafine ibice (nka SO42- na NO3-).
Hano, turatanga raporo ya biodegradable, ikora neza, irinda ubushuhe hamwe nigitutu cyumuvuduko ukabije wa mask ya filteri ishingiye kubikoresho byoroshye kuboneka.Bitewe no guhuza ibishishwa byumubiri hamwe na adsorption ya electrostatike, microfiber ya CsW ikozwe na microfiber / nanofiber ihuriweho na filteri ifite uburyo bwiza bwo kuvanaho PM2.5 (kugeza kuri 98%), kandi mugihe kimwe, igitutu kinini cyagabanutse kumayunguruzo manini ni gusa Ni 59 Pa, ibereye guhumeka kwabantu.Ugereranije no gutesha agaciro imikorere yerekanwe na N95 yubucuruzi, iyi filteri irerekana igihombo kinini cyo gukuraho PM (<1%) niyo cyaba cyuzuye neza, kubera amafaranga ya CsW ahoraho.Mubyongeyeho, muyunguruzi yacu irashobora kwangirika rwose mubutaka bwifumbire mugihe cyibyumweru 4.Ugereranije nubundi bushakashatsi bufite imyumvire isa, aho igice cyo kuyungurura kigizwe nibikoresho biodegradable, cyangwa byerekana imikorere mike mubishobora kuba biopolymer idashobora gukoreshwa, [6] iyi filteri irerekana neza Biodegradability yibintu byateye imbere (firime S1, amakuru ashyigikira).
Nkibigize igice cya Janus membrane filter, nanofiber na superfine fibre PBS mats yabanje gutegurwa.Kubwibyo, 11% na 12% ibisubizo bya PBS byari electrospun kugirango ikore fibre ya nanometero na micrometero, bitewe nubudasa bwabyo.[7] Amakuru arambuye yibiranga igisubizo hamwe nuburyo bwiza bwa electrospinning byanditswe mumeza S1 na S2, mumakuru yunganira.Kubera ko fibre ya sp-spun ikiri irimo ibishishwa bisigaye, ubwogero bwamazi bwongewemo bwongewe kubikoresho bisanzwe bya electrospinning, nkuko bigaragara ku gishushanyo cya 2a.Byongeye kandi, ubwogero bwamazi burashobora kandi gukoresha ikadiri kugirango ikusanyirize hamwe materi ya fibre yuzuye ya PBS, itandukanye na matrise ikomeye mugihe gakondo (Ishusho 2b).Impuzandengo ya fibre ya fibre ya microfibre na mato ya nanofibre ni 2,25 na 0.51 µm, naho impuzandengo ya pore ni 13.1 na 3.5 µm, (Ishusho 2c, d).Nkuko 9: 1 chloroform / Ethanol solvent ihinduka vuba nyuma yo kurekurwa muri nozzle, itandukaniro ryubwiza hagati ya 11 na 12 wt% ibisubizo byiyongera byihuse (Igicapo S1, amakuru ashyigikira).[7] Kubwibyo, itandukaniro ryibanze rya 1 wt% gusa rishobora gutera impinduka zikomeye muri diameter ya fibre.
Mbere yo kugenzura imikorere ya filteri (Igicapo S2, amakuru yunganira), kugirango ugereranye muyungurura zitandukanye mu buryo bushyize mu gaciro, electrospun idafite imyenda yubugari busanzwe yakozwe, kubera ko umubyimba ari ikintu cyingenzi kigira ingaruka ku itandukaniro ryumuvuduko no kuyungurura imikorere yimikorere ya filteri.Kubera ko imyenda idahwitse yoroshye kandi yoroheje, biragoye kumenya neza ubunini bwa electrospun nonwovens.Ubunini bwimyenda buragereranwa nubucucike bwubuso (uburemere kuri buri gice, uburemere shingiro).Kubwibyo, muri ubu bushakashatsi, dukoresha uburemere bwibanze (gm-2) nkigipimo cyiza cyubugari.Ubunini bugenzurwa no guhindura igihe cya electrospinning, nkuko bigaragara ku gishushanyo cya 2e.Mugihe igihe cyo kuzunguruka cyiyongera kuva kumunota 1 kugeza kuminota 10, umubyimba wa materi ya microfibre wiyongera kuri 0.2, 2.0, 5.2, na 9.1 gm-2.Muri ubwo buryo, umubyimba wa mato ya nanofibre wongerewe kuri 0.2, 1.0, 2.5, na 4.8 gm-2.Microfiber na nanofiber materi byagenwe nuburinganire bwabyo (gm-2) nka: M0.2, M2.0, M5.2 na M9.1, na N0.2, N1.0, N2.5 na N4. 8.
Itandukaniro ryumuvuduko wikirere (ΔP) yicyitegererezo cyose ni ikimenyetso cyingenzi cyerekana akayunguruzo.[9] Guhumeka unyuze muyungurura hamwe nigitutu cyumuvuduko mwinshi ntabwo byoroshye kubakoresha.Mubisanzwe, biragaragara ko igitutu kigabanuka uko ubunini bwiyungurura bwiyongera, nkuko bigaragara ku gishushanyo S3, gishyigikira amakuru.Mat ya nanofibre (N4.8) yerekana umuvuduko ukabije ugereranije na microfibre (M5.2) ku mubyimba ugereranije kuko materi ya nanofibre ifite imyenge mito.Mugihe ikirere kinyuze muyungurura ku muvuduko uri hagati ya 0.5 na 13.2 ms-1, igabanuka ryumuvuduko wubwoko bubiri butandukanye bwa filteri ryiyongera buhoro buhoro kuva kuri 101 Pa kugeza kuri 102 Pa.Ubugari bugomba kuba bwiza kugirango habeho kuringaniza umuvuduko no gukuraho PM. gukora neza;umuvuduko wumwuka wa 1.0 ms-1 birumvikana kuko igihe bifata kugirango abantu bahumeke mumunwa ni 1.3 ms-1.[10] Ni muri urwo rwego, umuvuduko w’umuvuduko wa M5.2 na N4.8 uremewe ku muvuduko w’ikirere wa 1.0 ms-1 (munsi ya 50 Pa) (Igicapo S4, amakuru ashyigikira).Nyamuneka menya ko igitutu cya N95 hamwe na masike asa na koreya ya koreya (KF94) ni 50 kugeza 70 Pa.Ubundi gutunganya CsW hamwe na micro / nano muyunguruzi birashobora kongera imbaraga zo guhangana nikirere;kubwibyo, kugirango dutange igitutu cyo kugabanuka, twasesenguye N2.5 na M2.0 mbere yo gusesengura M5.2 na N4.8.
Ku muvuduko w’ikirere wa 1.0 ms-1, uburyo bwo kuvanaho PM1.0, PM2.5, na PM10 ya microfiber ya PBS na materi ya nanofiber byakozwe nta shiti rihamye (Ishusho S5, amakuru ashyigikira).Byaragaragaye ko imikorere yo gukuraho PM muri rusange yiyongera hamwe no kwiyongera kwubunini nubunini bwa PM.Gukuraho imikorere ya N2.5 biruta M2.0 kubera imyenge mito.Ingaruka zo gukuraho M2.0 kuri PM1.0, PM2.5 na PM10 zari 55.5%, 64,6% na 78.8%, mugihe agaciro kamwe ka N2.5 kari 71.9%, 80.1% na 89.6% (Ishusho 2f).Twabonye ko itandukaniro rinini mu mikorere hagati ya M2.0 na N2.5 ari PM1.0, ibyo bikaba byerekana ko gushungura umubiri wa microfiber mesh bigira akamaro kuri PM urwego rwa micron, ariko ntibikora kuri PM urwego rwa nano (Ishusho S6, amakuru ashyigikira)., M2.0 na N2.5 byombi byerekana ubushobozi buke bwo gufata PM munsi ya 90%.Byongeye kandi, N2.5 irashobora kwibasirwa cyane n ivumbi kuruta M2.0, kubera ko ibice byumukungugu bishobora guhagarika byoroshye imyenge mito ya N2.5.Mugihe hatabonetse amafaranga ahamye, gushungura kumubiri bigarukira mubushobozi bwayo kugirango igabanye umuvuduko ukenewe hamwe no gukuraho icyarimwe icyarimwe kubera umubano wubucuruzi hagati yabo.
Electrostatic adsorption nuburyo bukoreshwa cyane mu gufata PM muburyo bunoze.[11] Mubisanzwe, kwishyuza static bikoreshwa ku gahato muyungurura idakozwe mu muriro w'amashanyarazi ufite ingufu nyinshi;icyakora, iki gipimo gihamye gishobora gukwirakwira byoroshye mubihe bitose, bikaviramo gutakaza ubushobozi bwo gufata PM.[4] Nkibikoresho bishingiye kuri bio yo kuyungurura amashanyarazi, twashyizeho 200 nm z'uburebure na 40 nm z'ubugari bwa CsW;kubera amatsinda yabo ya amonium hamwe na polar amide matsinda, izi nanowhiskers zirimo amafaranga yigihe kirekire.Amafaranga meza aboneka hejuru ya CsW agaragazwa nubushobozi bwa zeta (ZP);CsW ikwirakwizwa mumazi hamwe na pH ya 4.8, kandi ZP yabo isanga ari mV 49.8 (Igicapo S7, amakuru ashyigikira).
Microfibers ya CsW ikozweho na PBS (ChMs) na nanofibers (ChNs) byateguwe no gutwika byoroshye muri 0.2 wt% CsW ikwirakwiza amazi, aribwo buryo bukwiye bwo guhuza umubare ntarengwa wa CsWs hejuru ya fibre ya PBS, nkuko bigaragara kuri shusho Yerekanwa mu gishushanyo cya 3a na S8, amakuru ashyigikira.Ishusho ya azote ikwirakwiza X-ray spectroscopy (EDS) yerekana ko ubuso bwa fibre ya PBS bwashizwe hamwe hamwe nuduce twa CsW, ibyo bikaba bigaragara no mumashusho ya scanning electron microscope (SEM) (Ishusho 3b; Ishusho S9, amakuru ashyigikira) .Mubyongeyeho, ubu buryo bwo gutwikira butuma nanomateriali zishyizwe hamwe zifunga neza fibre hejuru, bityo bikagabanya ubushobozi bwa PM bwo gukuraho amashanyarazi (Igicapo S10, amakuru ashyigikira).
Ubushakashatsi bwo gukuraho PM bwa ChM na ChN bwarigishijwe (Ishusho 3c).M2.0 na N2.5 byashyizwe hamwe na CsW kugirango bibyare ChM2.0 na ChN2.5.Ibikorwa byo gukuraho ChM2.0 kuri PM1.0, PM2.5 na PM10 byari 70.1%, 78.8% na 86.3%, mugihe indangagaciro zisa na ChN2.5 zari 77.0%, 87.7% na 94,6%.Ipitingi ya CsW itezimbere cyane imikorere yo gukuraho M2.0 na N2.5, kandi ingaruka zagaragaye kuri PM ntoya ni ngombwa cyane.By'umwihariko, chitosan nanowhiskers yongereye imikorere yo gukuraho M2.0′s PM0.5 na PM1.0 kuri 15% na 13%, (Ishusho S11, amakuru ashyigikira).Nubwo M2.0 bigoye gukuramo PM1.0 ntoya kubera intera yagutse ya fibril (Igicapo 2c), ChM2.0 yamamaza PM1.0 kubera ko cations na amide muri CsWs zinyura muri ion-ion, bigahuza imikoranire ya Pole-ion , na dipole-dipole imikoranire numukungugu.Bitewe na CsW yacyo, imikorere yo gukuraho PM ya ChM2.0 na ChN2.5 ni ndende nkubunini bwa M5.2 na N4.8 (Imbonerahamwe S3, amakuru ashyigikira).
Igishimishije, nubwo imikorere yo gukuraho PM yatejwe imbere cyane, gutwikira CsW bigira ingaruka cyane kugabanuka k'umuvuduko.Kugabanuka k'umuvuduko wa ChM2.0 na ChN2.5 byiyongereyeho gato kugera kuri 15 na 23 Pa, hafi kimwe cya kabiri cy'ubwiyongere bwagaragaye kuri M5.2 na N4.8 (Ishusho 3d; Imbonerahamwe S3, amakuru ashyigikira).Kubwibyo, gutwikira hamwe nibikoresho bishingiye kuri bio nuburyo bukwiye bwo kuzuza ibisabwa byibikorwa bibiri byungurura;ni ukuvuga, gukuraho PM neza no gutandukanya umuvuduko wikirere, bitandukanye.Nyamara, PM1.0 na PM2.5 yo gukuraho ChM2.0 na ChN2.5 byombi biri munsi ya 90%;biragaragara, iyi mikorere igomba kunozwa.
Sisitemu ihuriweho na sisitemu igizwe nibice byinshi hamwe na diametre ihindagurika buhoro buhoro hamwe nubunini bwa pore birashobora gukemura ibibazo byavuzwe haruguru [12].Akayunguruzo ko mu kirere gafite ibyiza bya nanofibers ebyiri zitandukanye hamwe ninshundura za fibre nziza.Kuri iyi ngingo, ChM na ChN byegeranye gusa kugirango bitange filtri ihuriweho (Int-MNs).Kurugero, Int-MN4.5 yateguwe ukoresheje ChM2.0 na ChN2.5, kandi imikorere yayo igereranwa na ChN4.8 na ChM5.2 bifite ubucucike busa (ni ukuvuga ubunini).Mu igeragezwa rya PM ryakuweho, uruhande rwa ultrafine fibre ya Int-MN4.5 rwagaragaye mucyumba cyumukungugu kuko uruhande rwa fibre ultrafine rwarwanaga no gufunga kuruta uruhande rwa nanofiber.Nkuko bigaragara ku gishushanyo cya 4a, Int-MN4.5 yerekana uburyo bwiza bwo gukuraho PM no gutandukanya igitutu kuruta ibice bibiri bigize akayunguruzo, hamwe nigitutu cya 37 Pa, gisa na ChM5.2 kandi kiri munsi ya ChM5.2 ChN4.8. Mubyongeyeho, imikorere yo gukuraho PM1.0 ya Int-MN4.5 ni 91% (Ishusho 4b).Kurundi ruhande, ChM5.2 ntiyerekanye uburyo bunoze bwo gukuraho PM1.0 kuko imyenge yayo nini kuruta iyo Int-MN4.5.
Igihe cyo kohereza: Ugushyingo-03-2021
