Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Advanced Materials uye Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Advanced Materials uye Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Advanced Materials uye Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Advanced Materials uye Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Advanced Materials uye Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Advanced Materials uye Chemical Engineering, University of Science and Technology (UST), Daejeon, 34113 Republic of Korea
Shandisa chinongedzo chiri pazasi kugovera yakazara chinyorwa chinyorwa chechinyorwa ichi neshamwari dzako uye vaunoshanda navo.dzidza zvimwe.
Nekuda kwedenda rekoronavirus uye nyaya dzine chekuita nenyaya (PM) mumhepo, kudiwa kwemask kwakura zvakanyanya.Nekudaro, mafirita emasiki echinyakare akavakirwa pamagetsi akamira uye nano sieve zvese zvinoraswa, zvisingaparare kana kudzokororwa, izvo zvinokonzeresa matambudziko makuru emarara.Uye zvakare, iyo yekutanga icharasikirwa nebasa rayo pasi pemamiriro ehunyoro, nepo iyo yekupedzisira ichashanda nekuderera kwemhepo kudonha uye kukurumidza kuvhara pore kuchaitika.Pano, biodegradable, hunyoro-uchapupu, inofema zvakanyanya, yakakwirira-inoshanda fiber mask sefa yakagadzirwa.Muchidimbu, maviri biodegradable ultrafine fibers uye nanofiber mats akabatanidzwa muJanus membrane sefa, uye obva aputirwa ne cationically charged chitosan nanowhiskers.Iyi sefa inoshanda seyekutengesa N95 sefa uye inogona kubvisa 98.3% ye2.5 µm PM.Nanofibers yemuviri inovheneka zvimedu zvakanaka, uye ultrafine fibers inopa yakaderera kudzvanywa musiyano we59 Pa, iyo inokodzera kufema kwevanhu.Kusiyana nekudzikira kwakanyanya mukuita kwekutengesa kweN95 mafirita kana yaiswa hunyoro, kurasikirwa kwekuita kwesefa iyi hakuna basa, saka inogona kushandiswa kakawanda nekuti iyo dipole yekusingaperi ye chitosan adsorbs ultrafine PM (semuenzaniso, nitrogen).Uye sulfur oxides).Zvakakosha kuti sefa iyi iparare zvachose muvhu rine mupfudze mukati memavhiki mana.
Denda razvino risati ramboitika rekoronavirus (COVID-19) riri kufambisa kudiwa kukuru kwemasks.[1] World Health Organisation (WHO) inofungidzira kuti mamirioni makumi masere nemapfumbamwe emasiki ekurapa anodiwa mwedzi wega wega gore rino.[1] Kwete chete nyanzvi dzehutano dzinoda masiki eN95 epamusoro-soro, asi masks-chinangwa-chinoitirwa vanhu vese akavewo midziyo yemazuva ese yekudzivirira chirwere chinotapukira chekufema.[1] Pamusoro pezvo, hushumiri hwakakodzera hunokurudzira zvakasimba kushandiswa kwemasks anoraswa zuva rega rega, [1] izvi zvakakonzera matambudziko ezvakatipoteredza ane chekuita nehuwandu hwemarara emasiki.
Sezvo zvinhu zvemukati (PM) iri pari zvino dambudziko rekusvibiswa kwemhepo, masks ave nzira inonyanya kushanda inowanikwa kune vanhu.PM yakakamurwa kuita PM2.5 uye PM10 zvichienderana nekukura kwechikamu (2.5 uye 10μm zvakateerana), iyo inokanganisa zvakanyanya nharaunda yakasikwa [2] uye hupenyu hwehupenyu hwevanhu nenzira dzakasiyana.[2] Gore rega rega, PM inokonzeresa 4.2 miriyoni kufa uye 103.1 miriyoni hurema hwakagadziridzwa makore ehupenyu.[2] PM2.5 inoisa njodzi yakanyanya kuhutano uye inogadzwa zviri pamutemo seboka I carcinogen.[2] Naizvozvo, inguva uye yakakosha kutsvagisa nekugadzira inoshanda mask sefa maererano nemhepo permeability uye PM kubviswa.[3]
Kazhinji, mafirita echinyakare anobata PM nenzira mbiri dzakasiyana: kuburikidza nekusevha kwemuviri kunoenderana nanofibers uye electrostatic adsorption yakavakirwa pamicrofibers (Mufananidzo 1a).Kushandiswa kwenanofiber-based filters, kunyanya electrospun nanofiber mats, kwakaratidza kuva nzira inoshanda yekubvisa PM, inova mhedzisiro yekuwanda kuwanikwa kwezvinhu uye inodzoreka chigadzirwa chimiro.[3] Iyo nanofiber mat inogona kubvisa zvimedu zvehukuru hunotarirwa, izvo zvinokonzerwa nekusiyana kwehukuru pakati pezvimedu uye pores.[3] Zvisineyi, nano-scale fibers inoda kurongedzerwa zvakapetwa kuti iumbe ma pores madiki, ayo anokuvadza kugadzika kufema kwemunhu nekuda kwekusiyana kweBP.Pamusoro pezvo, maburi madiki anozovharika nekukurumidza.
Kune rimwe divi, iyo meltblown ultra-fine fiber mat inochajiswa nemagetsi nemunda wemagetsi ane simba, uye zvidimbu zvidiki kwazvo zvinotorwa ne electrostatic adsorption.[4] Semumiriri wemuenzaniso, iyo N95 yekufemerera inhengo-inosefa kumeso-mask respirator inoenderana nezvinodiwa neNational Institute of Occupational Safety and Health nekuti inogona kusefa ingangoita 95% yezvimedu zvemhepo.Rudzi urwu rwesefa inotora ultrafine PM, iyo inowanzo umbwa nezvinhu zveanionic zvakaita seSO42- uye NO3-, kuburikidza nekukwezva kwakasimba kwemagetsi.Zvisinei, iyo static charge iri pamusoro pefiber mat inoraswa nyore nyore munzvimbo ine hunyoro, senge inowanikwa mumhepo yekufema kwevanhu, [4] zvichikonzera kuderera kweadsorption kugona.
Kuti uwedzere kunatsiridza kusefa kwekuita kana kugadzirisa kutengeserana pakati pekubvisa kunyatsoshanda uye kudonhedza kudonha, mafirita anobva pane nanofibers uye microfibers anosanganiswa nepamusoro-k zvinhu, senge kabhoni zvinhu, simbi organic frameworks, uye PTFE nanoparticles.[4] Zvisineyi, iyo isina chokwadi biological toxicity uye kuchaja kuparara kwezvinowedzera izvi achiri matambudziko asingadzivisike.[4] Kunyanya, marudzi maviri aya emasefa echinyakare kazhinji haaparare, saka anozopedzisira avigwa mumarara kana kupiswa mushure mekushandiswa.Naizvozvo, kuvandudzwa kwemasefa emasiki ekugadzirisa aya matambudziko emarara uye panguva imwechete kubata PM nenzira inogutsa uye ine simba chinhu chakakosha parizvino.
Kuti tigadzirise matambudziko ari pamusoro, takagadzira Janus membrane sefa yakasanganiswa ne poly(butylene succinate)-based (PBS-based) [5] microfiber uye nanofiber mats.Iyo Janus membrane sefa yakaputirwa nechitosan nano ndebvu (CsWs) [5] (Mufananidzo 1b).Sezvatinoziva tese, PBS inomiririra biodegradable polymer, inogona kugadzira ultrafine faibha uye nanofiber nonwovens kuburikidza ne electrospinning.Nano-scale fibers inoteya PM, nepo micro-scale nano-fibers inoderedza kudonha uye kuita seCsW chimiro.Chitosan ibio-based material yakaratidzwa kuva yakanaka biological properties, zvinosanganisira biocompatibility, biodegradability uye yakaderera muchetura, [5] iyo inogona kuderedza kushushikana kunobatanidza netsaona inhalation yevashandisi.[5] Mukuwedzera, chitosan ine cationic nzvimbo uye polar amide mapoka.[5] Kunyangwe pasi pemamiriro ehunyoro, inogona kukwezva polar ultrafine particles (senge SO42- uye NO3-).
Pano, isu tinoshuma biodegradable, yakakwirira-kushanda, hunyoro-uchapupu uye yakaderera-kutsikirira inodonha mask sefa yakavakirwa pane zviri nyore biodegradable zvinhu.Nekuda kwekubatanidzwa kwekusevha kwemuviri uye electrostatic adsorption, iyo CSW-yakavharwa microfiber/nanofiber yakasanganiswa sefa ine yakakwira PM2.5 yekubvisa kunyatsogona (kusvika 98%), uye panguva imwe chete, iyo yakanyanya kudzvanywa inodonha pane gobvu sefa ndeye. chete Ndiyo 59 Pa, yakakodzera kufema kwevanhu.Kuenzaniswa nekudzikira kwakakosha kwekuita kunoratidzwa neN95 yekushambadzira sefa, iyi sefa inoratidza kurasikirwa kusingakoshi kwePM yekubvisa kunyatsoita (<1%) kunyangwe kana yakanyatsonyorova, nekuda kwechigarire CSW charge.Pamusoro pezvo, mafirita edu anogona kuparara zvachose muvhu rakakoswa mukati memavhiki mana.Zvichienzaniswa nezvimwe zvidzidzo zvine pfungwa dzakafanana, umo chikamu chesefa chinoumbwa nezvinhu zvinoparadza, kana kuratidza kushanda zvishoma mune zvingangoita biopolymer nonwoven applications, [6] iyi sefa inoratidza zvakananga Biodegradability yemhando yepamusoro (firimu S1, inotsigira ruzivo).
Sechikamu cheJanus membrane sefa, nanofiber uye superfine fiber PBS mats akatanga kugadzirwa.Naizvozvo, 11% uye 12% PBS mhinduro dzaive electrospun kugadzira nanometer uye micrometer fibers, zvichiteerana, nekuda kwekusiyana kwavo muviscosity.[7] Ruzivo rwakadzama rwemaitiro ekugadzirisa uye yakakwana electrospinning mamiriro akanyorwa muTables S1 uye S2, mune inotsigira ruzivo.Sezvo iyo as-spun fiber ichiri neyakasara solvent, imwe yekuwedzera mvura coagulation yekugeza inowedzerwa kune yakajairwa electrospinning mudziyo, sezvakaratidzwa muFigure 2a.Uye zvakare, iyo yekugezesa yemvura inogona zvakare kushandisa iyo furemu kuunganidza iyo coagulated yakachena PBS fiber mat, iyo yakasiyana neiyo yakasimba matrix mumagariro echinyakare (Mufananidzo 2b).[7] Avhareji yefiber madhayamita eiyo microfiber uye nanofiber mats ndeye 2.25 uye 0.51 µm, zvichiteerana, uye avhareji pore madhayamita ari 13.1 uye 3.5 µm, zvichiteerana (Mufananidzo 2c, d).Sezvo 9: 1 chloroform / ethanol solvent inoputika nekukurumidza mushure mekuburitswa kubva mumuromo, mutsauko we viscosity pakati pe11 ne12 wt% mhinduro unowedzera nekukurumidza (Mufananidzo S1, inotsigira ruzivo).[7] Nokudaro, kusiyana kwakasiyana kwe1 wt% chete kunogona kukonzera kuchinja kukuru mu fiber diameter.
Usati watarisa kusefa kuita (Figure S2, inotsigira ruzivo), kuti uenzanise mafirita akasiyana zvine musoro, electrospun nonwovens yeyakajairwa makubvu akagadzirwa, nekuti ukobvu chinhu chakakosha chinokanganisa mutsauko wekumanikidza uye kusefa kwekuita kwesefa kuita.Sezvo nonwovens ari akapfava uye ane porous, zvakaoma kuona zvakananga ukobvu hwe electrospun nonwovens.Ukobvu hwejira kazhinji hunoenderana nehuremu hwepamusoro (huremu pachikamu chechikamu, huremu hwehwaro).Naizvozvo, muchidzidzo chino, tinoshandisa hwaro huremu (gm-2) seyero inoshanda yekukora.[8] Ukobvu hunodzorwa nekushandura nguva ye electrospinning, sezvakaratidzwa muMufananidzo 2e.Sezvo nguva yekutenderera ichiwedzera kubva paminiti 1 kusvika kumaminitsi gumi, kukora kweiyo microfiber mat kunowedzera kusvika 0.2, 2.0, 5.2, uye 9.1 gm-2, zvichiteerana.Nenzira imwecheteyo, ukobvu hwenanofiber mat hwakawedzera kusvika 0.2, 1.0, 2.5, uye 4.8 gm-2, zvichiteerana.Microfiber uye nanofiber mats anosarudzwa neukobvu hwawo (gm-2) se: M0.2, M2.0, M5.2 uye M9.1, uye N0.2, N1.0, N2.5 uye N4. 8.
Kusiyana kwemhepo yemhepo (ΔP) yemuenzaniso wose chiratidzo chakakosha chekushanda kwesefa.[9] Kufema kuburikidza nesefa ine yakanyanya kudonha kudonha hakuna kugadzikana kumushandisi.Nomuzvarirwo, zvinoonekwa kuti kudonha kwekumanikidza kunowedzera sezvo ukobvu hwesefa hunowedzera, sezvakaratidzwa mumufananidzo S3, inotsigira ruzivo.Iyo nanofiber mat (N4.8) inoratidza kudonhedza kwakanyanya kupfuura iyo microfiber (M5.2) mat pahukobvu hunofananidzwa nekuti nanofiber mat ine mapores madiki.Sezvo mhepo inopfuura nepasefa pakukurumidza pakati pe 0.5 ne13.2 ms-1, kudonha kwekumanikidzwa kwemhando mbiri dzakasiyana dzemafiritsi kunowedzera zvishoma nezvishoma kubva 101 Pa kusvika 102 Pa. Ukobvu hunofanira kugadziriswa kuti huenzanise kudonha kwekumanikidza uye kubvisa PM. kunyatsoshanda;kumhanya kwemhepo kwe1.0 ms-1 kunonzwisisika nekuti nguva yainotora kuti vanhu vafeme nemumuromo inenge 1.3 ms-1.[10] Panyaya iyi, kuderera kweM5.2 neN4.8 kunogamuchirwa pamhepo yemhepo ye1.0 ms-1 (pasi pe50 Pa) (Mufananidzo S4, inotsigira ruzivo).Ndokumbira utarise kuti kudonha kwekumanikidza kweN95 uye yakafanana yeKorea sefa standard (KF94) masks ndeye makumi mashanu kusvika makumi manomwe Pa, zvichiteerana.Kuwedzera CSW kugadzirisa uye micro/nano sefa yekubatanidza inogona kuwedzera kupikisa kwemhepo;saka, kuitira kuti tipe dzvinyiriro yekudonha margin, takaongorora N2.5 uye M2.0 tisati taongorora M5.2 uye N4.8.
Pane chinongedzo chemhepo ye 1.0 ms-1, kubviswa kwakanaka kwePM1.0, PM2.5, uye PM10 yePBS microfiber uye nanofiber mats yakadzidzwa pasina static charge (Mufananidzo S5, inotsigira ruzivo).Izvo zvinocherechedzwa kuti iyo PM yekubvisa kunyatsoita kunowanzo kuwedzera nekuwedzera kwehupamhi uye PM saizi.Kubviswa kwekushanda kweN2.5 kuri nani kupfuura M2.0 nekuda kwezviputi zvayo zviduku.Kubvisa kushanda kweM2.0 yePM1.0, PM2.5 uye PM10 yaive 55.5%, 64.6% uye 78.8%, zvichiteerana, nepo maitiro akafanana eN2.5 aive 71.9%, 80.1% uye 89.6% (Mufananidzo 2f).Takaona kuti mutsauko mukuru mukubudirira pakati peM2.0 neN2.5 iPM1.0, izvo zvinoratidza kuti kusefa kwemuviri we microfiber mesh kunoshanda kune micron-level PM, asi haishande kune nano-level PM (Mufananidzo. S6, inotsigira ruzivo)., M2.0 uye N2.5 ese anoratidza yakaderera PM yekubata kugona isingasviki 90%.Mukuwedzera, N2.5 inogona kunyanya kubatwa neguruva kupfuura M2.0, nokuti guruva zvidimbu zvinogona kuvhara nyore nyore pores maduku eN2.5.Mukushaikwa kweiyo static charge, sieving yemuviri inogumira mukukwanisa kwayo kuzadzisa kudonhedza kunodiwa uye kubviswa kwekuita panguva imwe chete nekuda kwehukama hwekutengeserana pakati pavo.
Electrostatic adsorption ndiyo inonyanya kushandiswa nzira yekubata PM nenzira inoshanda.[11] Kazhinji, static charge inoshandiswa nechisimba kune iyo isiri-yakarukwa sefa kuburikidza nepamusoro-simba remagetsi munda;zvisinei, iyi static charge inoraswa nyore nyore pasi pemamiriro ehunyoro, zvichikonzera kurasikirwa kwePM kutora kugona.[4] Sechinhu chebio-based material ye electrostatic filtration, takaunza 200 nm kureba uye 40 nm yakafara CsW;nekuda kwemapoka avo eammonium uye mapoka epolar amide, aya nanowhiskers ane cationic charges zvachose.Iko kuripo kwakanaka kwechaji pamusoro peCsW inomiririrwa neiyo zeta kugona (ZP);CSW inoparadzirwa mumvura ine pH ye4.8, uye ZP yavo inowanikwa iine + 49.8 mV (Mufananidzo S7, inotsigira ruzivo).
CsW-yakavharwa PBS microfibers (ChMs) uye nanofibers (ChNs) yakagadzirwa neyakapfava dip coating mu 0.2 wt% CSW yekupararira kwemvura, inova iyo yekumisikidza kwakakodzera kubatanidza huwandu hwakanyanya hweCsWs kumusoro kwePBS fibers, sezvakaratidzwa mu mufananidzo Inoratidzwa muFigure 3a uye Mufananidzo S8, inotsigira ruzivo.Iyo nitrogen simba dispersive X-ray spectroscopy (EDS) mufananidzo unoratidza kuti pamusoro pePBS fiber yakavharwa zvakafanana neCsW zvimedu, izvo zvinoonekwa zvakare mu scanning electron maikorosikopu (SEM) mufananidzo (Mufananidzo 3b; Mufananidzo S9, inotsigira ruzivo) .Mukuwedzera, iyi Iyi nzira yekuputira inogonesa ma nanomaterials akachajiswa kuti apetedze faibha pamusoro, nokudaro achiwedzera electrostatic PM kubvisa kugona (Figure S10, kutsigira mashoko).
Iyo PM yekubvisa kugona kweChM neChN yakadzidzwa (Mufananidzo 3c).M2.0 uye N2.5 dzakaputirwa neCSW kuti dzigadzire ChM2.0 uye ChN2.5, zvichiteerana.Maitiro ekubvisa eChM2.0 ePM1.0, PM2.5 uye PM10 aive 70.1%, 78.8% uye 86.3%, zvichiteerana, nepo maitiro akafanana eChN2.5 aive 77.0%, 87.7% uye 94.6% zvichiteerana.Iyo CsW coating inovandudza zvakanyanya kubviswa kweM2.0 neN2.5, uye mhedzisiro inocherechedzwa kune idiki PM inonyanya kukosha.Kunyanya, chitosan nanowhiskers yakawedzera kubviswa kweM2.0's PM0.5 uye PM1.0 ne15% uye 13%, maererano (Mufananidzo S11, ruzivo runotsigira).Kunyange zvazvo M2.0 yakaoma kusabvisa iyo diki PM1.0 nekuda kwehupamhi hwefibril spacing (Mufananidzo 2c), ChM2.0 adsorbs PM1.0 nekuti cations uye amides muCsWs anopfuura neion-ion, kubatanidza Pole-ion kudyidzana. , uye dipole-dipole kusangana neguruva.Nekuda kweiyo CSW coating, iyo PM yekubvisa kugona kweChM2.0 neChN2.5 yakakwira seyakanyanya M5.2 uye N4.8 (Table S3, inotsigira ruzivo).
Sezvineiwo, kunyangwe iyo PM yekubvisa kunyatsoita yakagadziridzwa zvakanyanya, iyo CSW coating haina kukanganisa kudonha kwekumanikidza.Kudonha kwekumanikidzwa kweChM2.0 uye ChN2.5 kwakawedzera zvishoma kusvika ku15 uye 23 Pa, inenge hafu yekuwedzera yakaonekwa kweM5.2 uye N4.8 (Mufananidzo 3d; Tafura S3, inotsigira ruzivo).Naizvozvo, kupfekedza nebio-based zvinhu inzira yakakodzera yekusangana nekuita zvinodiwa zvemasefa maviri ekutanga;ndiko kuti, PM kubvisa kushanda zvakanaka uye mutsauko wekumanikidzwa kwemhepo, izvo zvinowirirana.Zvisinei, iyo PM1.0 uye PM2.5 kubvisa kushanda kweChM2.0 neChN2.5 zvose zviri pasi pe90%;zviri pachena, kuita uku kunoda kuvandudzwa.
Iyo yakasanganiswa filtration system inoumbwa neakawanda membrane ine zvishoma nezvishoma kuchinja fiber madhayamita uye saizi yepore inogona kugadzirisa matambudziko ari pamusoro [12].Iyo yakasanganiswa yemhepo sefa ine zvakanakira maviri akasiyana nanofibers uye superfine fiber mambure.Panyaya iyi, ChM neChN zvinongoiswa zvakaturikidzana kugadzira mafirita akabatanidzwa (Int-MNs).Semuenzaniso, Int-MN4.5 inogadzirwa uchishandisa ChM2.0 neChN2.5, uye kushanda kwayo kunofananidzwa neChN4.8 neChM5.2 dzine maarea densities akafanana (kureva ukobvu).Muyedzo yePM yekubvisa kunyatsoita basa, iyo ultrafine fiber side yeInt-MN4.5 yakafumurwa mukamuri ine guruva nekuti iyo ultrafine fiber side yairamba kuvharika kupfuura nanofiber side.Sezvinoratidzwa muMufananidzo 4a, Int-MN4.5 inoratidza zviri nani PM kubvisa kushanda uye kudzvinyirira kusiyana kune mafiritsi maviri e-single-component, ane kudonhedzwa kwe37 Pa, iyo yakafanana neChM5.2 uye yakanyanya kuderera kupfuura ChM5.2 ChN4.8. Mukuwedzera, PM1.0 kubvisa kushanda kweInt-MN4.5 ndeye 91% (Mufananidzo 4b).Kune rumwe rutivi, ChM5.2 haina kuratidza yakakwirira kudaro PM1.0 kubviswa kwekubudirira nokuti pores yayo yakakura kudarika yeInt-MN4.5.
Nguva yekutumira: Nov-03-2021
