I-HydroxyPOpyl Methylcelceltulose (HPMC), njengezinto zePolymer, ihlala isetyenziswa kwiindawo ezahlukeneyo zezahlulo-ndlu, kubandakanya nolwakhiwo, ukutya, amayeza kunye namanye amachiza. Kwiminyaka yakutshanje, i-HPMC ikwabonisile amandla amakhulu kulungiselelo kunye nokusetyenziswa kwe-membrane ye-ceramic. I-ceramic membranes isetyenziswa ngokubanzi kunyango lwamanzi, amachiza, amayeza kunye namanye amashishini ngenxa yamandla abo aphezulu, ukumelana nobushushu obuphezulu, i-AID kunye nezinye iimpawu. I-HPMC icothise ngokuthe ngcembe iarhente yokuncedisa kwi-meramic membranes ngokuphucula ubume be-ceramic, ukuphucula ukusebenza kwabo nokulungiselela ukulungiselela kwabo.
1. Iimpawu ezisisiseko ze-HPMC kunye nentshayelelo kwi-memramic membranes
I-HPMC yi-ionic se-i-ionic sether i-ertubase ye-ertubility ye-solubiday elungileyo, ukungcwatywa kwe-thermal, ukwenza ifilimu kunye neepropathi ezinkulu. Ezi mpawu ze-HPMC zivumela ukuba zikwazi ukubonelela ngentsebenzo esebenzayo kunye nokusebenza kwemveliso kwiinkqubo ezininzi zokulungiselela. Kumingeni le-membrane ye-ceramic, i-HPMC ikakhulu idlala iindima ezininzi ezinjengezodwa, iibhedi, kunye neemodyuli.
I-ceramic membranes izakhiwo ze-membrane zinezakhiwo ezinamandla ezenziwe ngokuthi zenzo ze-ceramic e-ceramic (i-zirconsium oxide, i-titanium dioxide, amandla aphezulu kunye namandla aphezulu emichiza. I-ceramic membranes isetyenziswa ngokubanzi kunyango lwamanzi, ukutya kunye nokusindisa isiselo, ukwahlukana kwamayeza kunye namanye amasimi. Nangona kunjalo, inkqubo yokulungiselela i-ceramic membranes inzima, ngakumbi ekumiselweni kwesakhiwo se-pore, ukuxinana kwezixhobo ze-membrane kunye nokufana komgangatho we-membrane. Ke ngoko, ukongeza izongezo ezinjenge-HPMC kunokuphucula ngokufanelekileyo ulwakhiwo kunye nokusebenza kwee-membraic membranes.
2. Indima ye-HPMC kwilungiselelo le-ceramic membranes
Indima ye-pore formers
Ngexesha lokulungiswa kwe-membranes ye-ceramic, izixhobo ze-membrane kufuneka zibe ne-Porosity efanelekileyo kunye nobukhulu becala ngokusasazwayo ukuqinisekisa ukwenziwa kwazo. I-HPMC, njenge-porea yangaphambili, inokubutyhe umzimba ngexesha lenkqubo ye-ceramic ye-membrane yezakhiwo zeyunifomu. I-HPMC iya kubola kwaye iguqukele kumaqondo obushushu aphezulu, kwaye ayiyi kuhlala kwi-meramic membrane, ngaloo ndlela ivelisa ubungakanani be-Poreeble olawulwa kunye nokusasazwa. Oku kwenza i-HPMC i-HPMC i-Aprive ebaluleke kakhulu kulungiselelo lwee-ceramil cerams kunye ne-ceramic.
Ukuphucula iipropathi zoomatshini bezixhobo ze-membrane
I-HPMC inepropathi egqwesileyo yefilimu kwaye inokuphucula iipropathi zoomatshini bezixhobo ze-membrane ngexesha lokulungiswa kwe-membrane. Kwinqanaba lokuqala le-ceramic membrane, i-HPMC inokusetyenziswa njenge-binder yezinto ze-memnene ukomeleza intsebenzo phakathi kwamasuntswana, elenza njalo ukuphucula ii-membranes ze-ceramic. Ingakumbi kwinkqubo yokuqulunqa i-membrane ye-ceramic, i-HPMC inokuthintela ukuqhekeka kwaye ixhase i-membrane fanks kwaye iqinisekise amandla omatshini we-ceramic emva kokufumana isono.
Ukuphucula ukuxinana kunye nokufana kwee-memramic membranes
I-HPMC inokuphucula ukuxinana kunye nokufana kwe-membrane ye-ceramic. Kwinkqubo yokulungiselela ye-ceramic membranes, ukusasazwa kwe-mempram yezixhobo ze-membrane kubalulekile ekwenzeni i-membrane. I-HPMC inobungozi obugqwesileyo kwaye inokunceda i-ceramic powders ukuba isasazwe ngokulinganayo kwisisombululo, ngaloo ndlela sithintele iziphene okanye ukungalingani kwendawo kwi-memrane. Ukongeza, i-vickosity ye-HPMC kwisisombululo inokulawula inqanaba le-sedication yee-ceramic iipowders, ezenza ukuba izinto ze-membrane zincinci kwaye zigudileyo ngexesha lokwenza.
Ukuphucula iipropathi zomhlaba ze-ceramic membranes
Enye indima enkulu ye-HPMC kukuphucula iipropathi zomhlaba ze-ceramic membranes, ngakumbi ngokwemigangatho ye-hydrophicicity kunye ne-anti-folting ye-membrane. I-HPMC inokuhlengahlengisa iipropathi zekhemikhali zomphezulu we-memrane ngexesha lokulungiswa kwe-membrane ye-ceramic, esenza ukuba ibe yi-hydrophilic, ngaloo ndlela ukuphuculwa amandla abuhlungu. Kwezinye izicelo, umphezulu we-membrane ye-ceramic ivunyelwe ngokulula yingcoliseko kwaye iyasilela. Ubukho be-HPMC bunokunciphisa ngokufanelekileyo ukuvela kwento yento kwaye kwandise ubomi benkonzo ye-ceramic.
I-3. Isiphumo se-hpmgristististion ye-HPMC kunye nezinye izongezelelo
Kumingeni le-membranes ye-ceramic, i-HPMC ihlala isebenza kwi-synegy kunye nezinye iisayina (njengabaphangi, abasasazi, ukuzinza, njl.) Ukwenza umsebenzi we-membrane. Umzekelo, ukusetyenziswa okuhlanganisiweyo kunye neephatherithi kunokwenza i-shrinkage ye-membrane ye-ceramic ngakumbi ngexesha lokuqalisa nokuthintela ukuveliswa kwemifuno. Ukongeza, isiphumo esilinganayo se-HPMC kunye nokusasazeka kunceda ekusasazeni ngokulinganayo ii-ceramic powders, ukuphucula ukufana kwezixhobo ze-membrane kunye nokulawulwa kwesakhiwo se-pore.
I-HPMC ikwasetyenziswa kwakhona ngokudibeneyo nezinye izinto zePolymer ezinje nge-polythylene glycol (i-peg) kunye nePolyvinyl Pylolidone (PVP). Ezi zinto zepolymer zinokulungelelanisa ngakumbi ubungakanani be-poreramic kunye nokusasazwa kwe-membranes ye-ceramic, emva koko ukufezekisa uyilo oluhlengahlengisiweyo kwiimfuno ezahlukeneyo zokufa. Umzekelo, i-PEG inefuthe lokwakha elihle. Xa isetyenziswa kunye ne-HPMC, isakhiwo samantshontsho e-ceramic membranes sinokulawulwa ngokuchanekileyo, ngaloo nto iphucule impumelelo yokufezekisa i-membrane.
4. Inkqubo yokuhamba kwe-HPMC yokudityaniswa kwe-ceramic membrane
Inkqubo yokudibanisa i-HPMC ibe yi-memramic membrane ihlala ibandakanya la manyathelo alandelayo:
Ukulungiswa kwe-ceramic slidery
Okokuqala, i-ceramic powder (efana ne-aluminii okanye i-ziirconsium oxide) ixutywe ne-HPMC kunye nezinye ezongezelelo ukulungiselela i-ceramic inolwelo. Ukongezwa kwe-HPMC kunokuba kulungelelanisa i-viscofity kunye nokungabi nampumelelo kokutyibilika kunye nokuqinisekisa ukusasazwa kwe-ceramic powder kwi-slirry.
Ukwenza i-membrane
Isilayidi se-ceramic senziwa kwi-membrane efunekayo engenanto ngeendlela ezinjengokuphosa, ukuphuma okanye inaliti. Kule nkqubo, i-HPMC inokuthintela ngokufanelekileyo ukuqhekeka kwaye iscofation ye-membrane ingenanto kwaye iphucule ukufana kwe-membrane.
Ukomisa kwaye ukona
Emva kokuba i-membrane ingenanto yomile, iyonile kubushushu obuphezulu. Kule nkqubo, i-HPMC iyazixhasa kubushushu obuphakamileyo, ishiya isakhiwo se-pore, kwaye ekugqibeleni senza i-ceramic membrane ngobukhulu obufunayo kunye nokukhathazeka.
Ukunyanga kwakhona kwe-membrane
Emva kokuqina, i-membrane ye-ceramic inokuba inyangwa njengeemfuno zesicelo, ezinjengokuguqulwa komphezulu, ukungqubana okanye ezinye iindlela zokusebenza, ukuqhubela phambili ukusebenza kwayo.
I-5. Amathemba kunye nemiceli mngeni ye-HPMC kwii-meramic membrane izicelo
I-HPMC inamathuba okusebenzisa isicelo se-ceramic membranes, ngakumbi kwizicelo eziphezulu ezinje ngonyango lwamanzi kunye nokwahlula igesi, apho kuphucula khona ukusebenza kwe-membrane. Nangona kunjalo, intsalela ye-HPMC ngexesha lokuqina kobushushu obuphakathi kunye nefuthe layo kwiindlela zokuhlala kwexesha elide kwi-membrane kusafuneka ukuba ifundwe ngakumbi. Ukongeza, indlela yokuphuhlisa indima yayo kwi-ceramic membranes ngoyilo lwe-molecular ye-HPMC ikwalizwi elibalulekileyo kuphando lwexesha elizayo.
Njengearhente ebalulekileyo ebalulekileyo kulungiselelo lwe-ceramic membranes, i-HPMC ihamba ngokuthe ngcembe zezona zinto ziphambili kumalungiselelo e-ceramic iziphumo, eziphuculweyo zonxibelelwano, eziphuculweyo zepropathi. Kwixa elizayo, ngokuphuhliswa okuqhubekayo kwetekhnoloji ye-ceramic ye-ceramic, i-HPMC iza kudlala indima ebalulekileyo kuluhlu olubanzi lwamacandelo, ukukhuthaza ukuphuculwa kwendlela yokusebenza kunye nokwandiswa kwe-membrane.
IXESHA LOKUQALA: NgoFebruwari-17-2025