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
Mea Maualuga Maualuga ma Inisinia Kemisi, Iunivesite o Saienisi ma Tekinolosi (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Mea Maualuga Maualuga ma Inisinia Kemisi, Iunivesite o Saienisi ma Tekinolosi (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Mea Maualuga Maualuga ma Inisinia Kemisi, Iunivesite o Saienisi ma Tekinolosi (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
Mea Maualuga Maualuga ma Inisinia Kemisi, Iunivesite o Saienisi ma Tekinolosi (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Mea Maualuga Maualuga ma Inisinia Kemisi, Iunivesite o Saienisi ma Tekinolosi (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Mea Maualuga Maualuga ma Inisinia Kemisi, Iunivesite o Saienisi ma Tekinolosi (UST), Daejeon, 34113 Republic of Korea
Fa'aoga le so'oga o lo'o i lalo e fa'asoa atu ai le fa'amatalaga atoa o lenei tusiga i au uo ma au uo.aoao atili.
Ona o le faʻamaʻi o le coronavirus ma faʻafitauli e fesoʻotaʻi ma meaʻai (PM) i le ea, o le manaʻoga mo ufimata ua faʻatupulaia faʻateleina.Peita'i, o fa'amama ufimata fa'aleaganu'u e fa'avae i luga ole eletise ma le nano sieve e mafai uma ona lafoa'i, e le fa'aleagaina pe toe fa'aaogaina, e mafua ai fa'afitauli matuia o otaota.E le gata i lea, o le mea muamua o le a leiloa lana galuega i lalo o tulaga susū, ae o le mea mulimuli o le a galue ma se pa'ū tele o le mamafa o le ea ma o le a tupu vave le pupuni o pore.O iinei, ua fausia ai se faamama e mafai ona fa'aleagaina, fa'asusu, e mānava, maualuga fa'atinoga.I se faapuupuuga, e lua alava biodegradable ultrafine ma nanofiber fala o loʻo tuʻufaʻatasia i totonu o le faamama membrane Janus, ona faʻapipiʻiina lea i le chitosan nanowhiskers ua molia.O lenei faamama e sili ona lelei e pei o le N95 fa'atau pisinisi ma e mafai ona aveese le 98.3% o le 2.5 µm PM.Nanofibers su'esu'eina fa'aletino vaega laiti, ma alava ultrafine e maua ai se eseesega maualalo o le mamafa o le 59 Pa, lea e talafeagai mo le manava o le tagata.E ese mai i le faʻaitiitia o le faʻatinoina o faʻasalalauga N95 faʻatau pe a faʻaalia i le susu, o le gau o lenei faamama e faʻatauvaʻa, o lea e mafai ona faʻaaogaina i le tele o taimi ona o le dipole tumau o le chitosan adsorbs ultrafine PM (mo se faʻataʻitaʻiga, nitrogen).Ma sulfur oxides).E taua le fa'apala atoatoa o lenei faamama i le palapala fa'apala i totonu ole 4 vaiaso.
Ole faʻamaʻi o le coronavirus e leʻi tupu muamua (COVID-19) o loʻo faʻaosoina ai le tele o manaʻoga mo matapulepule.[1] Ua fuafuaina e le Faalapotopotoga o le Soifua Maloloina a le Lalolagi (WHO) e 89 miliona matapulepule faafomai e manaomia i masina uma i lenei tausaga.[1] E le gata e manaʻomia e fomaʻi faʻapolofesa ni matapulepule N95 maualuga, ae o ufimata lautele mo tagata taʻitoʻatasi ua avea foʻi ma mea taua i aso uma mo le puipuia o lenei faʻamaʻi pipisi.[1] E le gata i lea, o loʻo fautuaina malosi e matagaluega talafeagai le faʻaogaina o matapulepule lafoai i aso uma, [1] ua mafua ai faʻafitauli tau le siosiomaga e fesoʻotaʻi ma le tele o lapisi lapisi.
Talu ai ona o mea fa'apitoa (PM) o lo'o avea nei ma fa'afitauli sili ona fa'afitauli o le filogia o le ea, ua avea ufimata ma tali sili ona aoga e avanoa mo tagata ta'ito'atasi.O le PM ua vaevaeina i le PM2.5 ma le PM10 e tusa ai ma le lapopo'a (2.5 ma le 10μm ta'itasi), lea e matua a'afia ai le si'osi'omaga fa'anatura [2] ma le lelei o le olaga o le tagata i auala eseese.[2] O tausaga taʻitasi, PM e mafua ai le 4.2 miliona maliu ma le 103.1 miliona le atoatoa le malosi fetuutuunai tausaga o le olaga.[2] O le PM2.5 o lo'o fa'atupuina ai se fa'amata'u tu'utia tele i le soifua maloloina ma ua fa'aigoaina aloa'ia o se vaega I fa'ama'i.[2] O le mea lea, ua talafeagai ma taua le suʻesuʻeina ma le atinaʻeina o se faʻamalama matapulepule lelei e tusa ai ma le faʻaogaina o le ea ma le aveeseina o le PM.[3]
I le tulaga masani, o filiga alava masani e pu'eina le PM i ni auala eseese se lua: e ala i le sieving faaletino e faavae i nanofibers ma le electrostatic adsorption e faavae i microfibers (Ata 1a).O le faʻaogaina o le faʻaogaina o le nanofiber, aemaise lava le electrospun nanofiber mats, ua faʻamaonia o se fuafuaga lelei e aveese ai le PM, o le taunuuga lea o le tele o mea e maua ma le faʻatulagaina o oloa.[3] O le fala nanofiber e mafai ona aveese vaega o le lapoʻa faʻatatau, lea e mafua mai i le tele o le eseesega i le va o vaega ma pores.[3] Peitaʻi, e manaʻomia ona faʻapipiʻi mafiafia alava nano-scale e fausia ai ni pores laiti, e afaina ai le manava lelei o le tagata ona o le eseesega maualuga o le mamafa.E le gata i lea, o pu laiti o le a mautinoa lava le poloka vave.
I le isi itu, o le fala fala fa'ato'a fa'afefeteina e fa'afefeteina e se eletise eletise malosi, ma o vaega laiti lava e pu'eina e le fa'aogaina o le electrostatic.[4] E fai ma fa'ata'ita'iga fa'atusa, o le N95 respirator o se fa'amama fa'amama fa'amama foliga e fetaui ma mana'oga a le National Institute of Occupational Safety and Health aua e mafai ona fa'amama a itiiti ifo i le 95% o vaega o le ea.O lenei ituaiga o faamama e mitiia le ultrafine PM, lea e masani ona faia i mea e iai anionic e pei ole SO42− ma le NO3−, e ala i le malosi o le eletise eletise.Ae ui i lea, o le tau faʻamau i luga o le fala fiber e faigofie ona faʻaumatia i se siosiomaga susu, e pei o le maua i le manava susu o le tagata, [4] e mafua ai le faʻaitiitia o le malosi o le adsorption.
Ina ia faʻaleleia atili le faʻaogaina o le faʻaogaina poʻo le foia o fefaʻatauaʻiga i le va o le aveeseina o le lelei ma le pa'ū o le mamafa, o filiga e faʻavae i luga o nanofibers ma microfibers e tuʻufaʻatasia ma mea maualuga-k, e pei o mea kaponi, faʻapipiʻi uʻamea uʻamea, ma PTFE nanoparticles.[4] Ae ui i lea, o le le mautinoa o le oona o meaola ma le faʻaumatiaina o tau o nei faʻaopoopoga o ni faʻafitauli e le mafai ona alofia.[4] Aemaise lava, o nei ituaiga e lua o faamama masani e masani lava e le mafai ona faʻaleagaina, o lea o le a iu lava ina tanumia i lapisi pe susunuina pe a uma ona faʻaaogaina.O le mea lea, o le atinaʻeina o faʻalelei faʻalelei faʻalelei e foia ai nei faʻafitauli otaota ma i le taimi lava e tasi e puʻeina le PM i se tulaga faʻamalieina ma mamana o se manaʻoga taua i le taimi nei.
Ina ia foia faʻafitauli o loʻo taʻua i luga, ua matou gaosia se faamama o Janus membrane ua tuʻufaʻatasia ma poly(butylene succinate) -faʻavae (PBS-faʻavae) [5] microfiber ma nanofiber fala.O le faamama o Janus membrane ua ufiufi i chitosan nano whiskers (CsWs) [5] (Ata 1b).E pei ona tatou iloa uma, o le PBS o se sui o le biodegradable polymer, lea e mafai ona gaosia ultrafine fiber ma nanofiber nonwovens e ala i le electrospinning.O alava nano-fuala'au mailei faaletino PM, a'o nano-fibers micro-scale fa'aitiitia le pa'u o le mamafa ma galue o se fa'avae CsW.O le Chitosan o se mea faʻavae faʻaola ua faʻamaonia e iai ni mea ola lelei, e aofia ai le biocompatibility, biodegradability ma le maualalo o le oona, [5] lea e mafai ona faʻaitiitia ai le popole e fesoʻotaʻi ma le faʻalavelave faʻafuaseʻi o tagata faʻaoga.[5] E le gata i lea, o le chitosan o loʻo i ai nofoaga cationic ma vaega polar amide.[5] E oo lava i lalo o tulaga susū, e mafai ona tosina mai vaega polar ultrafine (pei o SO42- ma NO3-).
Iinei, matou te lipoti atu ai se fa'amama ufimata e mafai ona fa'aleagaina, maualuga le lelei, fa'amaufa'ailoga ma le maualalo o le mamafa e fa'atatau i mea e mafai ona maua.Ona o le tuufaatasiga o le sieving faaletino ma le electrostatic adsorption, o le CsW-coated microfiber / nanofiber integrated filter o loʻo i ai se maualuga maualuga o le aveeseina o le PM2.5 (e oʻo atu i le 98%), ma i le taimi lava e tasi, o le maualuga o le mamafa o le pa'ū i luga o le faamama mafiafia o le na o le 59 Pa, e talafeagai mo le manava o le tagata.Pe a faʻatusatusa i le faʻaleagaina tele o faʻatinoga o loʻo faʻaalia e le N95 faʻatau pisinisi, o lenei faamama e faʻaalia ai le leiloa o le faʻaogaina o le PM (<1%) e tusa lava pe susu atoa, ona o le totogi tumau CsW.E le gata i lea, oa matou faamama e mafai ona fa'apalapala i le palapala i totonu ole 4 vaiaso.Fa'atusatusa i isi su'esu'ega fa'atasi ai ma manatu fa'apena, lea o lo'o iai le vaega fa'amama o mea e mafai ona fa'aleagaina, po'o fa'aalia le fa'atapula'aina o fa'atinoga i fa'aoga e le'i lalagaina, [6] o lenei faamama o lo'o fa'aalia sa'o mai ai le Biodegradability o foliga maualuluga (tiea S1, fa'amatalaga lagolago).
I le avea ai ma se vaega o le faamama membrane Janus, nanofiber ma superfine fiber PBS fala na muamua saunia.O le mea lea, 11% ma le 12% PBS solutions na fa'aeletonika e maua ai le nanometer ma micrometer fibers, i le faasologa, ona o lo latou eseesega i le viscosity.[7] O faʻamatalaga auiliili o uiga fofo ma tulaga sili ona lelei electrospinning o loʻo lisiina i luga ole Laulau S1 ma S2, ile faʻamatalaga lagolago.Talu ai ona o lo'o i ai pea i le alava fa'a-spun le solu o totoe, o se ta'ele fa'aopoopo vai fa'aopoopo e fa'aopoopo i se masini fa'aeletise masani, e pei ona fa'aalia i le Ata 2a.E le gata i lea, e mafai foi e le vai taele ona faʻaogaina le faʻavaa e aoina ai le fala faʻapalapala PBS mama, lea e ese mai le matrix malo i le tulaga masani (Ata 2b).[7] O le averesi o alava lautele o le microfiber ma nanofiber fala e 2.25 ma le 0.51 µm, i le faasologa, ma o le averesi pore diameters o 13.1 ma 3.5 µm, faasologa (Ata 2c, d).A o le 9: 1 chloroform / ethanol solvent e faʻavave vave pe a uma ona faʻasaʻoloto mai le nozzle, o le eseesega viscosity i le va o le 11 ma le 12 wt% solutions e faʻateleina vave (Ata S1, faʻamatalaga lagolago).[7] O le mea lea, o le eseesega o le faʻaogaina o le naʻo le 1 wt% e mafai ona mafua ai se suiga tele i le lautele fiber.
Aʻo leʻi siakiina le faʻatinoga o le faamama (Ata S2, faʻamatalaga lagolago), ina ia mafai ona faʻatusatusaina le tele o filiga talafeagai, na gaosia ai le eletise e le faʻafefeteina o le mafiafia masani, aua o le mafiafia o se mea taua e aʻafia ai le eseesega o le mamafa ma le faʻamamaina lelei o le faʻatinoga o le faamama.Talu ai o mea e le'i lalagaina e malu ma porous, e faigata ona iloa sa'o le mafiafia o mea e le'i lalaga eletise.O le mafiafia o le ie e masani ona fa'atusatusa i le maualuga o le luga (mamafa i le iunite, mamafa faavae).O le mea lea, i lenei suʻesuʻega, matou te faʻaaogaina le mamafa faavae (gm-2) e fai ma fua lelei o le mafiafia.[8] O le mafiafia e pulea e ala i le suia o le taimi eletise, e pei ona faʻaalia i le Ata 2e.A'o fa'atupula'ia le taimi taamilo mai le 1 minute i le 10 minute, o le mafiafia o le fala microfiber e fa'atupula'ia i le 0.2, 2.0, 5.2, ma le 9.1 gm-2.I le auala lava e tasi, o le mafiafia o le nanofiber fala na faʻateleina i le 0.2, 1.0, 2.5, ma le 4.8 gm-2, i le faasologa.Microfiber ma nanofiber fala o lo'o fa'ailogaina i latou mafiafia taua (gm-2) e pei o: M0.2, M2.0, M5.2 ma M9.1, ma N0.2, N1.0, N2.5 ma N4. 8.
O le eseesega o le mamafa o le ea (ΔP) o le faʻataʻitaʻiga atoa o se faʻailoga taua o le faʻatinoina o le faamama.[9] O le manava e ala i se faamama ma se pa'ū maualuga maualuga e le lelei mo le tagata faʻaoga.E masani lava, o loʻo matauina le faʻatupuina o le paʻu o le mamafa pe a faʻateleina le mafiafia o le faamama, e pei ona faʻaalia i le Ata S3, faʻamatalaga lagolago.O le fala nanofiber (N4.8) o loʻo faʻaalia ai le maualuga o le pa'ū o le mamafa nai lo le microfiber (M5.2) fala i se mafiafia faʻatusatusa ona o le nanofiber fala e laiti pores.A o alu le ea i totonu o le faamama i le saoasaoa i le va o le 0.5 ma le 13.2 ms-1, o le pa'ū o le mamafa o ituaiga eseese e lua o filiga e faasolosolo malie lava ona faateleina mai le 101 Pa i le 102 Pa. lelei;ole saosaoa ole ea ole 1.0 ms-1 e talafeagai ona ole taimi e manava ai tagata ile gutu e tusa ole 1.3 ms-1.[10] I lenei tulaga, o le pa'u o le mamafa o le M5.2 ma le N4.8 e talia i le saoasaoa o le ea o le 1.0 ms-1 (itiiti ifo i le 50 Pa) (Ata S4, faʻamatalaga lagolago).Faamolemole ia matau o le pa'u o le mamafa o le N95 ma foliga tutusa Korean filter standard (KF94) masks e 50 i le 70 Pa, i le faasologa.O le fa'aogaina atili o le CsW ma le tu'ufa'atasiga mama/nano e mafai ona fa'ateleina le tete'e o le ea;o le mea lea, ina ia mafai ona tuʻuina atu le pa'ū o le mamafa, matou te suʻesuʻeina le N2.5 ma le M2.0 aʻo leʻi suʻesuʻeina le M5.2 ma le N4.8.
I le saoasaoa o le saosaoa o le ea o le 1.0 ms-1, o le faʻaaogaina o le PM1.0, PM2.5, ma le PM10 o le PBS microfiber ma le nanofiber fala na suʻesuʻeina e aunoa ma se totogi faʻamau (Ata S5, faʻamatalaga lagolago).O lo'o maitauina e fa'atuputeleina le fa'agasologa o le aveesea o le PM i le fa'ateleina o le mafiafia ma le tele o le PM.O le faʻaaogaina o le N2.5 e sili atu nai lo le M2.0 ona o ona pores laiti.O le faʻaaogaina o le M2.0 mo le PM1.0, PM2.5 ma le PM10 e 55.5%, 64.6% ma le 78.8%, i le faasologa, ae o tau tutusa o N2.5 o 71.9%, 80.1% ma 89.6% (Ata. 2f).Na matou matauina o le eseesega tele i le lelei i le va o le M2.0 ma le N2.5 o le PM1.0, lea e faʻaalia ai o le sieving faaletino o le microfiber mesh e aoga mo micron-level PM, ae e le aoga mo nano-level PM (Ata. S6, faʻamatalaga lagolago)., M2.0 ma le N2.5 o loʻo faʻaalia uma le maualalo o le puʻeina o le PM e itiiti ifo i le 90%.E le gata i lea, o le N2.5 atonu e sili atu ona afaina i le pefu nai lo le M2.0, ona o mea efuefu e mafai ona faigofie ona poloka le pores laiti o le N2.5.I le leai o se totogi tumau, sieving faaletino faatapulaaina i lona gafatia e ausia le manaomia o le pa'u o le mamafa ma le aveesea lelei i le taimi lava e tasi ona o le fefaatauaiga-off sootaga i le va oi latou.
Electrostatic adsorption o le auala sili ona faʻaaogaina e puʻeina ai le PM i se auala lelei.[11] E masani lava, e faʻaaogaina faʻamalosi le tau faʻamalosi i le faamama e le o lalagaina e ala i se eletise eletise maualuga;ae ui i lea, o lenei tau faʻamautu e faigofie ona faʻaumatia i lalo o tulaga susū, e mafua ai le leiloa o le gafatia o le puʻeina o le PM.[4] I le avea ai o se mea e faʻatatau i meaola mo le faʻamamaina o le eletise, na matou faʻaalia le 200 nm umi ma le 40 nm lautele CsW;ona o latou vaega ammonium ma vaega polar amide, o nei nanowhiskers o loʻo i ai totogi tumau cationic.O le totogi lelei o lo'o maua i luga o le CsW o lo'o fa'atusalia e lona gafatia zeta (ZP);O le CsW o loʻo faʻasalalau i le vai ma le pH o le 4.8, ma o latou ZP e maua e +49.8 mV (Ata S7, faʻamatalaga lagolago).
CsW-coated PBS microfibers (ChMs) ma nanofibers (ChNs) na saunia e ala i le ufiufi faigofie i le 0.2 wt% CsW faʻasalalau vai, o le faʻatonuga talafeagai lea e faʻapipiʻi ai le aofaʻi maualuga o CsWs i luga o filo PBS, e pei ona faʻaalia i le ata Fa'aalia i le Ata 3a ma le Ata S8, fa'amatalaga lagolago.O le ata o le eletise X-ray dispersive spectroscopy (EDS) o loʻo faʻaalia ai o le pito i luga o le alava PBS o loʻo faʻapipiʻiina tutusa ma vaega o le CsW, lea e faʻaalia foi i le ata o le microscope electron (SEM) (Ata 3b; Ata S9, faʻamatalaga lagolago) .E le gata i lea, o lenei O lenei auala faʻapipiʻi e mafai ai ona faʻapipiʻi nanomaterials e afifiina lelei le alava, ma faʻateleina ai le gafatia e aveese ai le PM electrostatic (Ata S10, faʻamatalaga lagolago).
Na suʻesuʻeina le faʻaaogaina o le PM o ChM ma ChN (Ata 3c).M2.0 ma le N2.5 na ufiufi i le CsW e maua ai ChM2.0 ma ChN2.5, i le faasologa.O le faʻaaogaina o le ChM2.0 mo le PM1.0, PM2.5 ma le PM10 e 70.1%, 78.8% ma le 86.3%, i le faasologa, ae o tau tutusa o ChN2.5 e 77.0%, 87.7% ma le 94.6%.O le faʻapipiʻi CsW e faʻaleleia atili ai le faʻaogaina o le M2.0 ma le N2.5, ma o le aʻafiaga na matauina mo PM laʻititi laʻititi e sili atu ona taua.Aemaise lava, o chitosan nanowhiskers na faʻateleina le faʻaogaina o le M2.0's PM0.5 ma le PM1.0 e 15% ma le 13%, i le faasologa (Ata S11, faʻamatalaga lagolago).E ui lava e faigata le M2.0 ona faʻateʻaina le PM1.0 laʻititi ona o lona lautele lautele o le fibril spacing (Ata 2c), ChM2.0 adsorbs PM1.0 ona o cations ma amides i CsWs e ui atu i le ion-ion, faʻapipiʻi fesoʻotaʻiga Pole-ion. , ma fegalegaleaiga dipole-dipole ma le pefu.Ona o lona faʻapipiʻi CsW, o le PM e aveese ai le lelei o ChM2.0 ma ChN2.5 e maualuga e pei o le M5.2 ma le N4.8 mafiafia (Table S3, faʻamatalaga lagolago).
O le mea e mata'ina ai, e ui lava ina fa'aleleia atili le fa'aogaina o le PM, ae o le fa'apipi'i CsW e faigata ona afaina ai le pa'u o le mamafa.O le pa'ū mamafa o ChM2.0 ma ChN2.5 na faʻatupulaʻia laʻititi i le 15 ma le 23 Pa, toetoe o le afa o le faʻaopoopoga na matauina mo M5.2 ma N4.8 (Ata 3d; Laulau S3, faʻamatalaga lagolago).O le mea lea, o le faʻapipiʻiina o mea e faʻaogaina ai meaola o se auala talafeagai e faʻamalieina ai manaʻoga o faʻatinoga o filiga faavae e lua;o lona uiga, PM aveesea lelei ma le eseesega o le mamafa o le ea, lea e tutusa uma.Ae ui i lea, o le PM1.0 ma le PM2.5 le faʻaaogaina o le ChM2.0 ma le ChN2.5 e maualalo ifo i le 90%;e manino lava, e tatau ona faʻaleleia lenei faʻatinoga.
O se faiga faʻapipiʻi tuʻufaʻatasia e aofia ai le tele o membranes ma faʻasolosolo suiga o fiber diameters ma pore sizes e mafai ona foia ai faʻafitauli o loʻo i luga [12].O le fa'amama ea tu'ufa'atasi o lo'o i ai le lelei o nanofibers eseese e lua ma upega fa'alava sili.I lenei tulaga, ChM ma ChN ua na o le faaputuina e maua ai filiga tuufaatasia (Int-MNs).Mo se faʻataʻitaʻiga, ua saunia le Int-MN4.5 e faʻaaoga ai ChM2.0 ma ChN2.5, ma o lona faʻatinoga e faʻatusatusa i le ChN4.8 ma ChM5.2 o loʻo i ai le tutusa o le densities (ie mafiafia).I le PM removal efficiency experiment, o le ultrafine fiber itu o le Int-MN4.5 na faʻaalia i totonu o le potu pefu ona o le ultrafine fiber itu na sili atu ona faʻasaʻo i le pupuni nai lo le nanofiber itu.E pei ona faʻaalia i le Ata 4a, Int-MN4.5 o loʻo faʻaalia ai le sili atu o le faʻaaogaina o le PM ma le eseesega o le mamafa nai lo le lua faʻamaufaʻailoga e tasi, faʻatasi ai ma le paʻu o le mamafa o le 37 Pa, e tutusa ma ChM5.2 ma sili atu le maualalo nai lo ChM5.2 ChN4.8. E le gata i lea, o le PM1.0 le faʻaaogaina o le Int-MN4.5 o le 91% (Ata 4b).I le isi itu, e leʻi faʻaalia e ChM5.2 se maualuga maualuga o le aveeseina o le PM1.0 ona o ona pores e sili atu nai lo le Int-MN4.5.
Taimi meli: Nov-03-2021
