I-sodium carboxymethyl cellulose (CMC) iwukuphuma kwe-cellulose esetshenziswa kabanzi ngezinhlelo zokusebenza ezahlukahlukene ezimbonini ezahlukahlukene.Ukuhlanzeka kwe-CMC kudlala indima ebalulekile ekunqumeni ukusebenza kahle nokusebenza kwayo ezinhlelweni ezahlukene.Leli phepha lihlose ukuhlinzeka ngemininingwane yezindlela ezahlukahlukene ezisetshenziswa ukwahlulela ubumsulwa be-sodium carboxymethyl cellulose.Amasu okuhlaziya afana nokuhlaziywa kwe-degree of substitution (DS), ukuhlolwa kwe-viscosity, ukuhlaziya okuyisisekelo, ukunqunywa kokuqukethwe komswakamo, nokuhlaziya ukungcola kuxoxwa ngakho ngokuningiliziwe.Ngokusebenzisa lezi zindlela, abakhiqizi, abacwaningi, kanye nabasebenzisi bangahlola ikhwalithi nokuthembeka kwemikhiqizo ye-CMC, okubenza bakwazi ukwenza izinqumo ezinolwazi ngokusekelwe kumazinga okuhlanzeka afiswayo.
I-Sodium carboxymethyl cellulose (CMC) iphuma ku-cellulose etholakala ngokuguqulwa kwamakhemikhali e-cellulose, ngokuyinhloko etholakala ku-pulp yokhuni noma ukotini.I-CMC ithola ukusetshenziswa okubanzi ezimbonini ezinjengokudla, ezemithi, izimonyo, izindwangu, kanye nokumba uwoyela ngenxa yezakhiwo zayo ezihlukile.Kodwa-ke, ukuhlanzeka kwe-CMC kuthonya kakhulu ukusebenza kwayo nokufaneleka kwezinhlelo ezithile zokusebenza.Ngakho-ke, izindlela ezihlukahlukene zokuhlaziya zenzelwe ukwahlulela ubumsulwa be-CMC ngokunembile.
Ukuhlaziywa kweDegree of Substitution (DS):
Izinga lokushintsha liyipharamitha ebalulekile esetshenziselwa ukuhlola ubumsulwa be-CMC.Imele inani elimaphakathi lamaqembu e-carboxymethyl ngeyunithi ngayinye ye-cellulose ku-molecule ye-CMC.Amasu afana ne-spectroscopy ye-nuclear magnetic resonance (NMR) kanye nezindlela ze-titration angasetshenziswa ukuze kunqunywe inani le-DS.Amanani aphezulu e-DS ngokuvamile abonisa ubumsulwa obuphakeme.Ukuqhathanisa inani le-DS lesampula le-CMC namazinga omkhakha noma imininingwane yomkhiqizi kuvumela ukuhlolwa kobumsulwa bayo.
Ukuhlolwa kwe-Viscosity:
Ukulinganisa kwe-viscosity kungenye indlela ebalulekile yokuhlola ubumsulwa be-CMC.I-Viscosity ihlobene eduze nokuqina nokuqiniswa kwezakhiwo ze-CMC.Amabanga ahlukene e-CMC anezigaba ezicacisiwe ze-viscosity, futhi ukuchezuka kusuka kulawa mabanga kungase kubonise ukungcola noma ukuhluka kwinqubo yokukhiqiza.Ama-viscometer noma ama-rheometer avame ukusetshenziswa ukukala i-viscosity yezixazululo ze-CMC, futhi amanani atholiwe angaqhathaniswa nobubanzi be-viscosity obucacisiwe ukuze kwahlulele ubumsulwa be-CMC.
Ukuhlaziya okuyisisekelo:
Ukuhlaziya okuyisisekelo kunikeza ulwazi olubalulekile mayelana nokwakheka kwe-CMC, okusiza ekuhlonzeni ukungcola noma ukungcoliswa.Amaqhinga afana ne-plasma optical emission spectrometry (ICP-OES) ehlanganisiwe ngokungenisa amandla noma i-X-ray spectroscopy (EDS) ehlakazeka amandla angasetshenziswa ukuze kunqunywe ukwakheka okuyisisekelo kwamasampuli e-CMC.Noma ikuphi ukuchezuka okubalulekile kusukela kuzilinganiso ze-elementi okulindelekile kungase kubonise ukungcola noma izinto zangaphandle, okuphakamisa ingozi engaba khona ebumsulwa.
Ukunqunywa Kokuqukethwe Komswakama:
Umswakamo we-CMC uyipharamitha ebalulekile okufanele icatshangelwe lapho kuhlolwa ubumsulwa bayo.Umswakama owedlulele ungaholela ekugoqeni, ekuncipheni kokuncibilika, nokusebenza kahle.Amasu afana ne-Karl Fischer titration noma ukuhlaziywa kwe-thermogravimetric (TGA) angasetshenziswa ukuze kutholwe okuqukethwe komswakama kwamasampuli e-CMC.Ukuqhathanisa umthamo womswakama okaliwe nemikhawulo ethile kuvumela ukwahlulelwa kobumsulwa nekhwalithi yomkhiqizo we-CMC.
Ukuhlaziya Ukungcola:
Ukuhlaziywa kokungcola kuhilela ukuhlola ukuba khona kokungcola, amakhemikhali ayinsalela, noma imikhiqizo engafunwa ku-CMC.Amasu afana ne-high-performance liquid chromatography (HPLC) noma i-gas chromatography-mass spectrometry (GC-MS) angasetshenziswa ukuze kuhlonzwe futhi kulinganise ukungcola.Ngokuqhathanisa amaphrofayili okungcola amasampula e-CMC anemikhawulo eyamukelekayo noma amazinga emboni, ubumsulwa be-CMC bungahlolwa.
Ukwahlulela ngokunembile ukuhlanzeka kwe-sodium carboxymethyl cellulose (CMC) kubalulekile ukuze kuqinisekiswe ukusebenza kwayo nokwethembeka ezinhlelweni ezihlukahlukene.Izindlela zokuhlaziya ezifana nezinga lokuhlaziywa kokufakwa esikhundleni, ukuhlolwa kwe-viscosity, ukuhlaziya okuyisisekelo, ukunqunywa kokuqukethwe komswakama, nokuhlaziya ukungcola kunikeza imininingwane ebalulekile ngobumsulwa be-CMC.Abakhiqizi, abacwaningi, nabasebenzisi bangasebenzisa lezi zindlela ukuze benze izinqumo ezinolwazi futhi bakhethe imikhiqizo yekhwalithi ephezulu ye-CMC ehlangabezana nezimfuneko zabo ezithile.Ukuthuthuka okwengeziwe kumasu okuhlaziya kuzoqhubeka nokuthuthukisa ikhono lethu lokuhlola nokuqinisekisa ubumsulwa be-CMC esikhathini esizayo.
