Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Advanced Materials and Chemical Engineering, Jami'ar Kimiyya da Fasaha (UST), Daejeon, 34113 Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Advanced Materials and Chemical Engineering, Jami'ar Kimiyya da Fasaha (UST), Daejeon, 34113 Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Advanced Materials and Chemical Engineering, Jami'ar Kimiyya da Fasaha (UST), Daejeon, 34113 Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Advanced Materials and Chemical Engineering, Jami'ar Kimiyya da Fasaha (UST), Daejeon, 34113 Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Advanced Materials and Chemical Engineering, Jami'ar Kimiyya da Fasaha (UST), Daejeon, 34113 Jamhuriyar Koriya
Cibiyar Fasahar Kimiyya ta Koriya (KRICT) Cibiyar Nazarin Kimiyya ta Biobased, Ulsan, 44429, Jamhuriyar Koriya
Advanced Materials and Chemical Engineering, Jami'ar Kimiyya da Fasaha (UST), Daejeon, 34113 Jamhuriyar Koriya
Yi amfani da hanyar haɗin da ke ƙasa don raba cikakken sigar wannan labarin tare da abokanka da abokan aiki.kara koyo.
Sakamakon cutar amai da gudawa na coronavirus da kuma batutuwan da suka shafi ƙwayoyin cuta (PM) a cikin iska, buƙatun abin rufe fuska ya ƙaru sosai.Koyaya, matattarar abin rufe fuska na gargajiya bisa tushen wutar lantarki da nano sieve duk abin zubar da su ne, ba za a iya lalacewa ba ko kuma za a iya sake yin amfani da su, wanda zai haifar da babbar matsalar sharar gida.Bugu da ƙari, tsohon zai rasa aikinsa a ƙarƙashin yanayi mai laushi, yayin da na ƙarshe zai yi aiki tare da raguwa mai mahimmanci na iska kuma in mun gwada da sauri toshe pore zai faru.Anan, an ɓullo da abin da ba za a iya lalata shi ba, mai tabbatar da danshi, mai saurin numfashi, babban aikin tace mashin fiber.A taƙaice, zaɓuɓɓukan ultrafine guda biyu masu ɓoyayyen halitta da nanofiber mats ana haɗa su cikin matatar janus membrane, sannan an lulluɓe su da caja na chitosan nanowhiskers.Wannan tacewa yana da inganci kamar tace N95 na kasuwanci kuma yana iya cire kashi 98.3% na 2.5µm PM.Nanofibers a zahiri suna kallon barbashi masu kyau, kuma filaye na ultrafine suna ba da ƙarancin matsa lamba na 59 Pa, wanda ya dace da numfashin ɗan adam.Sabanin kaifi mai kaifi a cikin ayyukan matatun N95 na kasuwanci lokacin da aka fallasa ga danshi, asarar aikin wannan tacewa ba ta da kyau, don haka ana iya amfani da shi sau da yawa saboda madaidaicin dipole na chitosan adsorbs ultrafine PM (misali, nitrogen).Kuma sulfur oxides).Yana da mahimmanci cewa wannan tacewa ta rushe gaba ɗaya a cikin ƙasa mai takin cikin makonni 4.
Cutar amai da gudawa na coronavirus da ba a taɓa ganin irinta ba a halin yanzu (COVID-19) tana haifar da babbar buƙatar abin rufe fuska.[1] Hukumar Lafiya ta Duniya (WHO) ta kiyasta cewa ana bukatar abin rufe fuska miliyan 89 a duk wata a wannan shekara.[1] Ba wai kawai kwararrun likitocin kiwon lafiya suna buƙatar babban abin rufe fuska na N95 ba, amma abin rufe fuska na gaba ɗaya ga duk mutane kuma sun zama kayan aikin yau da kullun don rigakafin wannan cutar ta numfashi.[1] Bugu da ƙari, ma'aikatun da suka dace suna ba da shawarar yin amfani da abin rufe fuska a kowace rana, [1] wannan ya haifar da matsalolin muhalli da ke da alaƙa da yawan adadin abin rufe fuska.
Tunda ƙwayoyin cuta (PM) a halin yanzu shine mafi matsala matsalar gurɓacewar iska, abin rufe fuska ya zama mafi ingancin matakan da ake samu ga daidaikun mutane.PM ya kasu zuwa PM2.5 da PM10 bisa ga girman barbashi (2.5 da 10μm bi da bi), wanda ke matukar shafar yanayin halitta [2] da ingancin rayuwar dan adam ta hanyoyi daban-daban.[2] Kowace shekara, PM yana haifar da mutuwar mutane miliyan 4.2 da kuma nakasassu miliyan 103.1 da aka daidaita shekarun rayuwa.[2] PM2.5 yana haifar da babbar barazana ga lafiya kuma an sanya shi a hukumance azaman ƙungiyar I carcinogen.[2] Saboda haka, yana da lokaci kuma yana da mahimmanci don bincike da haɓaka ingantaccen tacewa ta fuskar fuska dangane da iska da kuma cire PM.[3]
Gabaɗaya magana, matatun fiber na gargajiya suna kama PM ta hanyoyi daban-daban guda biyu: ta hanyar sieving ta jiki bisa nanofibers da adsorption na electrostatic dangane da microfibers (Hoto 1a).Yin amfani da matattarar nanofiber, musamman mats na nanofiber na electrospun, ya tabbatar da zama dabarun da za a iya cire PM, wanda shine sakamakon yawan samuwa na kayan aiki da tsarin samfurin sarrafawa.[3] Tabarmar nanofiber na iya cire ɓangarorin girman da aka yi niyya, wanda ke haifar da bambancin girman tsakanin barbashi da pores.[3] Duk da haka, filaye masu girman nano suna buƙatar a tara su sosai don samar da ƙananan pores, waɗanda ke da lahani ga jin daɗin numfashin ɗan adam saboda bambancin matsa lamba mai alaƙa.Bugu da ƙari, ƙananan ramukan ba makawa za a toshe su cikin sauri.
A gefe guda kuma, matin fiber ɗin da ke narkewa mai ƙarfi yana cajin lantarki ta hanyar lantarki mai ƙarfi, kuma ƙananan ƙwayoyin cuta suna kama su ta hanyar tallan lantarki.[4] A matsayin misali na wakilci, na'urar numfashi na N95 wani nau'i ne mai tace fuska-mask na numfashi wanda ya dace da bukatun Cibiyar Tsaro da Lafiya ta Kasa saboda yana iya tace akalla kashi 95 na iska.Wannan nau'in tacewa yana ɗaukar ultrafine PM, wanda yawanci ya ƙunshi abubuwan anionic kamar SO42- da NO3-, ta hanyar jan hankali mai ƙarfi na electrostatic.Koyaya, cajin a tsaye a saman katifar fiber ɗin yana cikin sauƙi a tarwatsewa a cikin yanayi mai ɗanɗano, kamar wanda aka samu a cikin ɗan adam numfashi mai ɗanɗano, [4] yana haifar da raguwar ƙarfin talla.
Don ƙara haɓaka aikin tacewa ko warware cinikin tsakanin haɓakar cirewa da raguwar matsa lamba, ana haɗa matattarar da ke kan nanofibers da microfibers tare da manyan-k kayan, irin su kayan carbon, ƙirar ƙwayoyin ƙarfe, da PTFE nanoparticles.[4] Duk da haka, rashin tabbas mai guba na ilimin halitta da rarrabuwar cajin waɗannan abubuwan ƙari har yanzu matsalolin da ba za a iya kaucewa ba.[4] Musamman, waɗannan nau'ikan matatun gargajiya guda biyu galibi ba sa lalacewa, don haka a ƙarshe za a binne su a wuraren da ake zubar da ƙasa ko kuma a ƙone su bayan amfani.Sabili da haka, haɓaka ingantattun matatun abin rufe fuska don magance waɗannan matsalolin sharar gida kuma a lokaci guda kama PM cikin gamsarwa da ƙarfi hanya ce mai mahimmanci a halin yanzu.
Domin magance matsalolin da ke sama, mun ƙera matatar janus membrane hadedde tare da poly(butylene succinate) tushen (PBS-based) [5] microfiber da nanofiber mats.An lulluɓe matatun membrane na Janus da chitosan nano whiskers (CsWs) [5] (Hoto 1b).Kamar yadda muka sani, PBS wakili ne na polymer mai lalacewa, wanda zai iya samar da ultrafine fiber da nanofiber nonwovens ta hanyar electrospinning.Nano-sikelin zaruruwa jiki tarko PM, yayin da micro-sikelin nano-fibers rage matsa lamba da kuma aiki a matsayin CsW tsarin.Chitosan abu ne na tushen halittu wanda aka tabbatar yana da kyawawan kaddarorin halittu, gami da haɓakar halittu, haɓakar halittu da ƙarancin guba, [5] wanda zai iya rage damuwa da ke tattare da shakar masu amfani da haɗari.[5] Bugu da ƙari, chitosan yana da rukunin cationic da ƙungiyoyin amide na polar.[5] Ko da a ƙarƙashin yanayi mai ɗanɗano, yana iya jawo hankalin barbashi na ultrafine na polar (kamar SO42- da NO3-).
Anan, muna ba da rahoton abin da ba za a iya lalata shi ba, inganci mai inganci, mai tabbatar da danshi da matattarar ɗigon matsi mai ƙarancin ƙarfi dangane da abubuwan da za a iya gyara su.Saboda haɗuwa da sieving na jiki da kuma adsorption na electrostatic, CsW mai rufi microfiber / nanofiber hadedde filter yana da babban aikin cirewa na PM2.5 (har zuwa 98%), kuma a lokaci guda, matsakaicin matsa lamba akan mafi yawan tacewa shine. kawai Yana da 59 Pa, dace da numfashin ɗan adam.Idan aka kwatanta da gagarumin lalacewar aikin da tacewar kasuwanci ta N95 ta nuna, wannan tacewa tana nuna hasarar ƙarancin aikin cire PM (<1%) ko da cikakken jika, saboda cajin CsW na dindindin.Bugu da kari, matattarar mu gaba daya ba za a iya lalata su ba a cikin kasa mai takin cikin makonni 4.Idan aka kwatanta da sauran nazarin da ke da irin wannan ra'ayi, wanda ɓangaren tacewa ya ƙunshi kayan da ba za a iya lalacewa ba, ko kuma yana nuna iyakacin aiki a cikin yuwuwar aikace-aikacen da ba a saka ba, [6] wannan tacewa kai tsaye yana nuna Biodegradability na abubuwan ci-gaba (fim ɗin S1, bayanan tallafi).
A matsayin ɓangaren tacewa na Janus membrane, nanofiber da superfine fiber PBS mats an fara shirya su.Saboda haka, 11% da 12% PBS mafita sune electrospun don samar da nanometer da micrometer fibers, bi da bi, saboda bambancinsu a cikin danko.[7] An jera cikakkun bayanai game da halayen mafita da mafi kyawun yanayin electrospinning a cikin Tables S1 da S2, a cikin bayanan tallafi.Tun da har yanzu fiber as-spun yana ƙunshe da sauran sauran ƙarfi, ana ƙara ƙarin wankan coagulation na ruwa zuwa na'urar lantarki na yau da kullun, kamar yadda aka nuna a hoto 2a.Bugu da ƙari, wanka na ruwa na iya amfani da firam don tattara matin fiber na PBS mai tsabta, wanda ya bambanta da matrix mai ƙarfi a cikin al'ada (Hoto 2b).[7] Matsakaicin diamita na fiber na microfiber da nanofiber mats sune 2.25 da 0.51 µm, bi da bi, kuma matsakaicin diamita na pore sune 13.1 da 3.5 µm, bi da bi (Hoto 2c, d).Kamar yadda 9: 1 chloroform / ethanol sauran ƙarfi ke ƙafe da sauri bayan an sake shi daga bututun ƙarfe, bambancin danko tsakanin 11 da 12 wt% mafita yana ƙaruwa da sauri (Hoto S1, bayanan tallafi).[7] Saboda haka, bambancin maida hankali na kawai 1 wt% na iya haifar da gagarumin canji a diamita na fiber.
Kafin a duba aikin tacewa (Hoto S2, bayanan tallafi), don kwatanta matattara daban-daban da kyau, an ƙera su na lantarki marasa kauri na daidaitattun kauri, saboda kauri muhimmin abu ne wanda ke shafar bambancin matsa lamba da ingancin tacewa na aikin tacewa.Tun da nonwovens suna da laushi kuma suna da ƙuri'a, yana da wuya a iya ƙayyade kauri na electrospun nonwoven kai tsaye.Kauri na masana'anta gabaɗaya daidai yake da ƙarancin ƙasa (nauyin kowane yanki, nauyin tushe).Don haka, a cikin wannan binciken, muna amfani da ma'aunin tushe (gm-2) azaman ma'aunin kauri mai inganci.[8] Ana sarrafa kauri ta hanyar canza lokacin wutar lantarki, kamar yadda aka nuna a Hoto 2e.Yayin da lokacin jujjuyawar ke ƙaruwa daga minti 1 zuwa mintuna 10, kauri na mat ɗin microfiber yana ƙaruwa zuwa 0.2, 2.0, 5.2, da 9.1 gm-2, bi da bi.Hakazalika, an ƙara kauri na matin nanofiber zuwa 0.2, 1.0, 2.5, da 4.8 gm-2, bi da bi.Microfiber da nanofiber mats an tsara su ta hanyar kauri dabi'u (gm-2) kamar: M0.2, M2.0, M5.2 da M9.1, da N0.2, N1.0, N2.5 da N4. 8.
Bambancin matsa lamba na iska (ΔP) na duk samfurin shine muhimmiyar alamar aikin tacewa.[9] Numfashi ta hanyar tacewa tare da raguwar matsa lamba ba shi da daɗi ga mai amfani.A dabi'a, an lura cewa raguwar matsa lamba yana ƙaruwa yayin da kauri na tace yana ƙaruwa, kamar yadda aka nuna a cikin Hoto S3, bayanan tallafi.Matin nanofiber (N4.8) yana nuna matsi mafi girma fiye da microfiber (M5.2) mat a wani kauri mai kama da nanofiber saboda nanofiber mat yana da ƙananan pores.Yayin da iska ke wucewa ta cikin tacewa a cikin sauri tsakanin 0.5 da 13.2 ms-1, matsa lamba na nau'in tacewa iri-iri guda biyu yana karuwa a hankali daga 101 Pa zuwa 102 Pa. Ya kamata a inganta kauri don daidaita matsa lamba da cire PM. inganci;Gudun iskar 1.0 ms-1 yana da ma'ana saboda lokacin da mutane suke ɗauka don shaƙa ta baki kusan 1.3 ms-1 ne.[10] A wannan batun, raguwar matsa lamba na M5.2 da N4.8 an yarda da su a saurin iska na 1.0 ms-1 (kasa da 50 Pa) (Hoto S4, bayanan tallafi).Da fatan za a lura cewa raguwar matsin lamba na N95 da makamantan matattarar matatun Koriya (KF94) shine 50 zuwa 70 Pa, bi da bi.Ƙarin aiki na CsW da haɗin haɗin micro / nano na iya kara yawan juriya na iska;don haka, don samar da raguwar matsa lamba, mun yi nazarin N2.5 da M2.0 kafin nazarin M5.2 da N4.8.
A maƙasudin saurin iska na 1.0 ms-1, an yi nazarin ingancin cire PM1.0, PM2.5, da PM10 na PBS microfiber da nanofiber mats ba tare da cajin baturi ba (Hoto S5, bayanan tallafi).An lura cewa aikin cire PM gabaɗaya yana ƙaruwa tare da haɓaka kauri da girman PM.Cire ingancin N2.5 ya fi M2.0 kyau saboda ƙananan ƙura.Abubuwan da aka cire na M2.0 na PM1.0, PM2.5 da PM10 sun kasance 55.5%, 64.6% da 78.8%, yayin da kwatankwacin darajar N2.5 ya kasance 71.9%, 80.1% da 89.6% (Hoto). 2 f).Mun lura cewa babban bambanci a cikin inganci tsakanin M2.0 da N2.5 shine PM1.0, wanda ke nuna cewa sieving jiki na ragar microfiber yana da tasiri ga ƙananan matakin PM, amma ba shi da tasiri ga nano-level PM (Figure). S6, bayanan tallafi)., M2.0 da N2.5 duk suna nuna ƙarancin ikon kama PM na ƙasa da 90%.Bugu da kari, N2.5 na iya zama mafi saukin kamuwa da kura fiye da M2.0, saboda barbashin kura na iya toshe kananan kofofin N2.5 cikin sauki.Idan babu tsayayyen caji, zazzagewar jiki yana da iyakancewa a cikin ikonsa don cimma matsi da ake buƙata da ingancin cirewa a lokaci guda saboda alaƙar ciniki tsakanin su.
Electrostatic adsorption ita ce hanyar da aka fi amfani da ita don kama PM cikin ingantacciyar hanya.[11] Gabaɗaya, ana amfani da cajin da ba a saka ba ta hanyar wutar lantarki mai ƙarfi;duk da haka, wannan madaidaicin cajin yana cikin sauƙi a watse a ƙarƙashin yanayi mai ɗanɗano, yana haifar da asarar ikon kama PM.[4] A matsayin abu na tushen halittu don tacewa electrostatic, mun gabatar da 200 nm tsawo da 40 nm fadi CsW;saboda ƙungiyoyin ammonium da ƙungiyoyin amide na polar, waɗannan nanowhiskers sun ƙunshi cajin cationic na dindindin.Ana samun ingantaccen cajin da ake samu akan saman CsW yana wakilta ta yuwuwar zeta (ZP);CsW yana tarwatsewa cikin ruwa tare da pH na 4.8, kuma ana samun ZP ɗin su +49.8 mV (Hoto S7, bayanan tallafi).
CsW-mai rufi PBS microfibers (ChMs) da nanofibers (ChNs) an shirya su ta hanyar tsoma mai sauƙi a cikin 0.2 wt% CsW watsawar ruwa, wanda shine ƙaddamar da ya dace don haɗa matsakaicin adadin CsWs zuwa saman filayen PBS, kamar yadda aka nuna a cikin Hoton da aka nuna a Hoto na 3a da Hoto S8, bayanai masu goyan baya.Hoton da ke watsewar makamashin Nitrogen na X-ray spectroscopy (EDS) ya nuna cewa saman PBS fiber ɗin an lulluɓe shi tare da barbashi na CsW, wanda kuma ya bayyana a cikin hoton microscope na lantarki (SEM) (Hoto 3b; Hoto S9, bayanan tallafi) .Bugu da kari, wannan hanyar shafi tana ba da damar cajin nanomaterials don nannade saman fiber ɗin da kyau, ta haka yana haɓaka ƙarfin cirewar wutar lantarki na PM (Hoto S10, bayanan tallafi).
An yi nazarin ingancin cire PM na ChM da ChN (Hoto 3c).M2.0 da N2.5 an lullube su da CsW don samar da ChM2.0 da ChN2.5, bi da bi.Abubuwan da aka cire na ChM2.0 na PM1.0, PM2.5 da PM10 sun kasance 70.1%, 78.8% da 86.3%, bi da bi, yayin da kwatankwacin darajar ChN2.5 ya kasance 77.0%, 87.7% da 94.6% bi da bi.Rufin CsW yana haɓaka haɓakar cirewar M2.0 da N2.5, kuma tasirin da aka lura don ƙaramin ƙaramin PM ya fi mahimmanci.Musamman, chitosan nanowhiskers sun haɓaka aikin cire M2.0's PM0.5 da PM1.0 da 15% da 13%, bi da bi (Hoto S11, bayanin tallafi).Ko da yake M2.0 yana da wahala a ware ƙaramin PM1.0 saboda ƙarancin tazarar fibril ɗinsa (Hoto na 2c), ChM2.0 yana tallata PM1.0 saboda cations da amides a cikin CsWs suna wucewa ta hanyar ion-ion, haɗuwa da hulɗar Pole-ion. , da kuma hulɗar dipole-dipole tare da ƙura.Saboda ta CsW shafi, da PM cire yadda ya dace na ChM2.0 da ChN2.5 ne kamar yadda na m5.2 thicker da N4.8 (Table S3, goyon bayan bayanai).
Abin sha'awa, ko da yake aikin cire PM yana inganta sosai, murfin CsW yana da wuya yana rinjayar raguwar matsa lamba.Matsayin matsa lamba na ChM2.0 da ChN2.5 ya karu kadan zuwa 15 da 23 Pa, kusan rabin karuwar da aka samu don M5.2 da N4.8 (Hoto 3d; Table S3, bayanan tallafi).Sabili da haka, sutura tare da kayan da aka samo asali shine hanya mai dacewa don saduwa da buƙatun aiki na matatun asali guda biyu;wato, ingancin cire PM da bambancin matsa lamba na iska, wanda ke tsakanin juna.Koyaya, ingantaccen cire PM1.0 da PM2.5 na ChM2.0 da ChN2.5 duka sun yi ƙasa da 90%;a fili, wannan aikin yana buƙatar ingantawa.
Tsarin tacewa mai haɗaka wanda ya ƙunshi membranes da yawa tare da canza diamita na fiber a hankali da girman pore zai iya magance matsalolin da ke sama [12].Haɗaɗɗen matatar iska tana da fa'idodin nanofibers daban-daban guda biyu da tarun fiber superfine.Dangane da wannan, ChM da ChN ana tara su kawai don samar da abubuwan tacewa (Int-MNs).Misali, ana shirya Int-MN4.5 ta hanyar amfani da ChM2.0 da ChN2.5, kuma ana kwatanta aikinta da ChN4.8 da ChM5.2 wadanda ke da nau'ikan gefuna iri daya (watau kauri).A cikin gwajin ingancin cire PM, ɓangaren ultrafine fiber na Int-MN4.5 an fallasa shi a cikin ɗakin ƙura saboda ɓangaren fiber na ultrafine ya fi juriya ga toshewa fiye da gefen nanofiber.Kamar yadda aka nuna a cikin Hoto na 4a, Int-MN4.5 yana nuna mafi kyawun cirewar PM da bambancin matsa lamba fiye da nau'i-nau'i guda biyu, tare da matsa lamba na 37 Pa, wanda yayi kama da ChM5.2 da yawa fiye da ChM5.2 ChN4.8. Bugu da ƙari, ingantaccen cire PM1.0 na Int-MN4.5 shine 91% (Hoto 4b).A gefe guda, ChM5.2 bai nuna irin wannan babban aikin cirewar PM1.0 ba saboda pores ɗinsa sun fi na Int-MN4.5 girma.
Lokacin aikawa: Nuwamba-03-2021
