Izinyibilikisi zidlala indima ebalulekile ekwakhiweni nasekucutshungulweni kwama-polymer njenge-ethyl cellulose (EC). I-ethyl cellulose iyi-polymer eguquguqukayo etholakala ku-cellulose, i-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo. Ivame ukusetshenziswa ezimbonini ezahlukahlukene njengezemithi, izimbozo, izinamathiseli, kanye nokudla.
Lapho ukhetha izinyibilikisi ze-ethyl cellulose, kunezinto eziningana okudingeka zicatshangelwe, okuhlanganisa ukuncibilika, ukujiya, ukuguquguquka, ubuthi, kanye nomthelela emvelweni. Ukukhetha isinyibilikisi kungathinta kakhulu izakhiwo zomkhiqizo wokugcina.
I-Ethanol: I-Ethanol ingenye yezinyibilikisi ezisetshenziswa kakhulu ze-ethyl cellulose. Itholakala kalula, ayibizi kakhulu, futhi ikhombisa ukuncibilika okuhle kwe-ethyl cellulose. I-Ethanol isetshenziswa kabanzi ekusetshenzisweni kwemithi yokulungisa izembozo, amafilimu, kanye nama-matrices.
I-Isopropanol (IPA): I-Isopropanol ingenye i-solvent ethandwayo ye-ethyl cellulose. Inikeza izinzuzo ezifanayo ne-ethanol kodwa inganikeza izakhiwo ezingcono zokwakha ifilimu kanye nokuguquguquka okuphezulu, okwenza ifaneleke ukusetshenziswa okudinga izikhathi zokomisa ngokushesha.
I-Methanol: I-Methanol iyi-solvent e-polar engancibilikisa i-ethyl cellulose ngempumelelo. Kodwa-ke, ayisetshenziswa kakhulu ngenxa yobuthi bayo obuphezulu uma kuqhathaniswa ne-ethanol ne-isopropanol. I-Methanol isetshenziswa kakhulu ezicelweni ezikhethekile lapho kudingeka khona izakhiwo zayo ezithile.
I-Acetone: I-Acetone iyisinyibilikisi esiguquguqukayo esinokuncibilika okuhle kwe-ethyl cellulose. Ivame ukusetshenziswa ezinhlotsheni zezimboni zokwenza izembozo, izinamathiseli, kanye noyinki. Kodwa-ke, i-acetone ingasha kakhulu futhi ingaba yingozi yokuphepha uma ingaphathwanga kahle.
I-Toluene: I-Toluene iyi-solvent engeyona i-polar ekhombisa ukuncibilika okuhle kakhulu kwe-ethyl cellulose. Ivame ukusetshenziswa embonini yezingubo zokumboza kanye nezinamathiselo ngenxa yekhono layo lokuncibilikisa uhla olubanzi lwama-polymer, kufaka phakathi i-ethyl cellulose. Kodwa-ke, i-toluene inezinkinga zempilo kanye nezemvelo ezihlobene nokusetshenziswa kwayo, kufaka phakathi ubuthi kanye nokuguquguquka.
I-Xylene: I-Xylene ingenye i-solvent engeyona i-polar engancibilikisa i-ethyl cellulose ngempumelelo. Ivame ukusetshenziswa kanye nezinye i-solvent ukulungisa ukuncibilika kanye nokuthamba kwesisombululo. Njenge-toluene, i-xylene ibeka izingozi empilweni nasemvelweni futhi idinga ukuphathwa ngokucophelela.
Izinyibilikisi Ezine-Chloride (isib. I-Chloroform, i-Dichloromethane): Izinyibilikisi ezine-chloroform njenge-chloroform ne-dichloromethane zisebenza kahle kakhulu ekuncibilikiseni i-ethyl cellulose. Kodwa-ke, zihlotshaniswa nezingozi ezinkulu zempilo nezemvelo, okuhlanganisa ubuthi kanye nokuqhubeka kwemvelo. Ngenxa yalezi zinkinga, ukusetshenziswa kwazo kuye kwehla ngenxa yezinye izindlela eziphephile.
I-Ethyl Acetate: I-Ethyl acetate iyi-solvent e-polar engancibilikisa i-ethyl cellulose ngezinga elithile. Ivame ukusetshenziswa ezicelweni ezikhethekile lapho izici zayo ezithile zifunwa khona, njengasekwenziweni kwezinhlobo ezithile zemithi kanye nezingubo ezikhethekile.
I-Propylene Glycol Monomethyl Ether (PGME): I-PGME iyi-solvent e-polar ebonisa ukuncibilika okulinganiselwe kwe-ethyl cellulose. Ivame ukusetshenziswa ngokuhlanganiswa nezinye izincibilikisi ukuthuthukisa ukuncibilika kanye nezakhiwo zokwakha ifilimu. I-PGME ivame ukusetshenziswa ekwakhiweni kwezimbozo, uyinki, kanye nezinamathiseli.
I-Propylene Carbonate: I-Propylene carbonate iyi-solvent e-polar enokuncibilika okuhle kwe-ethyl cellulose. Ivame ukusetshenziswa ezindaweni ezikhethekile lapho izakhiwo zayo ezithile, njengokuguquguquka okuphansi kanye nendawo ephezulu yokubilisa, zizuzisa khona.
I-Dimethyl Sulfoxide (DMSO): I-DMSO iyi-solvent ye-polar aprotic engancibilikisa i-ethyl cellulose ngezinga elithile. Ivame ukusetshenziswa ekusetshenzisweni kwemithi ngenxa yekhono layo lokuncibilikisa uhla olubanzi lwamakhemikhali. Kodwa-ke, i-DMSO ingabonisa ukuhambisana okulinganiselwe nezinto ezithile futhi ingaba nezimpawu zokucasuka kwesikhumba.
I-N-Methyl-2-pyrrolidone (NMP): I-NMP iyi-solvent e-polar enokuncibilika okuphezulu kwe-ethyl cellulose. Ivame ukusetshenziswa ezinhlotsheni ezikhethekile lapho kudingeka khona izici zayo ezithile, njengezinga lokubila eliphezulu kanye nobuthi obuphansi.
I-Tetrahydrofuran (THF): I-THF iyi-solvent e-polar ebonisa ukuncibilika okuhle kakhulu kwe-ethyl cellulose. Ivame ukusetshenziswa ezindaweni zelebhu zokuncibilikisa ama-polymers nanjenge-solvent yokusabela. Kodwa-ke, i-THF iyasha kakhulu futhi ibeka izingozi zokuphepha uma ingaphathwanga kahle.
I-Dioxane: I-Dioxane iyi-solvent e-polar engancibilikisa i-ethyl cellulose ngezinga elithile. Ivame ukusetshenziswa ezindaweni ezikhethekile lapho izakhiwo zayo ezithile, njengezinga eliphezulu lokubila kanye nobuthi obuphansi, zizuzisa khona.
I-Benzene: I-Benzene iyi-solvent engeyona i-polar ekhombisa ukuncibilika okuhle kwe-ethyl cellulose. Kodwa-ke, ngenxa yobuthi bayo obuphezulu kanye nokuba nomthelela emdlavuza, ukusetshenziswa kwayo kuyekiwe kakhulu ukuze kusetshenziswe ezinye izindlela eziphephile.
I-Methyl Ethyl Ketone (MEK): I-MEK iyi-solvent e-polar enokuncibilika okuhle kwe-ethyl cellulose. Ivame ukusetshenziswa ezinhlotsheni zezimboni zokwenza izembozo, izinamathiselo, kanye noyinki. Kodwa-ke, i-MEK ingavutha kakhulu futhi ingaba yingozi yokuphepha uma ingaphathwanga kahle.
I-Cyclohexanone: I-Cyclohexanone iyi-solvent e-polar engancibilikisa i-ethyl cellulose ngezinga elithile. Ivame ukusetshenziswa ezindaweni ezikhethekile lapho kudingeka khona izici zayo ezithile, njengezinga lokubila eliphezulu kanye nobuthi obuphansi.
I-Ethyl Lactate: I-Ethyl lactate iyi-solvent etholakala ezintweni ezivuselelekayo. Ibonisa ukuncibilika okulinganiselwe kwe-ethyl cellulose futhi ivame ukusetshenziswa ezinhlotsheni ezikhethekile lapho ubuthi bayo obuphansi kanye nokubola kwayo kunenzuzo.
I-Diethyl Ether: I-Diethyl ether iyi-solvent engeyona i-polar engancibilikisa i-ethyl cellulose ngezinga elithile. Kodwa-ke, iyashintshashintsha kakhulu futhi iyavutha, ibeka izingozi zokuphepha uma ingaphathwanga kahle. I-Diethyl ether ivame ukusetshenziswa ezindaweni zelebhu zokuncibilikisa ama-polymers kanye ne-reaction solvent.
I-Petroleum Ether: I-Petroleum ether iyi-solvent engeyona i-polar etholakala ezingxenyeni ze-petroleum. Ibonisa ukuncibilika okulinganiselwe kwe-ethyl cellulose futhi isetshenziswa kakhulu ezinhlotsheni ezikhethekile lapho kudingeka khona izakhiwo zayo ezithile.
kunezinhlobo eziningi zezixazululo ezitholakalayo zokuncibilikisa i-ethyl cellulose, ngayinye inezinzuzo zayo kanye nemikhawulo yayo. Ukukhetha i-solvent kuncike ezintweni ezahlukahlukene, kufaka phakathi izidingo zokuncibilika, izimo zokucubungula, izinto ezicatshangelwayo zokuphepha, kanye nezinkinga zemvelo. Kubalulekile ukuhlola ngokucophelela lezi zici bese ukhetha i-solvent efaneleke kakhulu ekusetshenzisweni ngakunye ukuze kutholakale imiphumela emihle ngenkathi kuqinisekiswa ukuphepha kanye nokusimama kwemvelo.
Isikhathi sokuthunyelwe: Mashi-06-2024