Inqubo Yokukhiqiza ye-sodium carboxymethylcellulose

Inqubo yokukhiqiza i-sodium carboxymethylcellulose (CMC) ihilela izinyathelo eziningana, okuhlanganisa ukulungiswa kwe-cellulose, i-etherification, ukuhlanza, kanye nokomisa. Nasi isifinyezo senqubo yokukhiqiza evamile:

1. Ukulungiswa kwe-Cellulose: Inqubo iqala ngokulungiswa kwe-cellulose, evame ukutholakala ku-pulp yokhuni noma ku-cotton linters. I-cellulose iqale ihlanzwe futhi ihlungwe ukuze kususwe ukungcola okufana ne-lignin, i-hemicellulose, nezinye izinto ezingcolisayo. Le cellulose ehlanziwe isebenza njengezinto zokuqala zokukhiqizwa kwe-CMC.
2. I-Alkalization: I-cellulose ehlanziwe ibe isiphathwa ngesisombululo se-alkaline, ngokuvamile i-sodium hydroxide (NaOH), ukuze kwandiswe ukusabela kwayo futhi kube lula ukusabela kwe-etherification okulandelayo. I-Alkalization ibuye isize ekuvuvukeni nasekuvuleni imicu ye-cellulose, okwenza kube lula ukuyiguqula ngamakhemikhali.
3. Ukusabela Kwe-Etherification: I-cellulose e-alkalized isabela nge-monochloroacetic acid (MCA) noma usawoti wayo we-sodium, i-sodium monochloroacetate (SMCA), lapho kukhona i-catalyst ngaphansi kwezimo ezilawulwayo. Lokhu kusabela kwe-etherification kuhilela ukufaka amaqembu e-hydroxyl kumaketanga e-cellulose ngamaqembu e-carboxymethyl (-CH2COONa). Izinga lokufaka esikhundleni (DS), elimelela inani elimaphakathi lamaqembu e-carboxymethyl ngeyunithi ngayinye ye-glucose yeketanga le-cellulose, lingalawulwa ngokulungisa amapharamitha okusabela njengokushisa, isikhathi sokusabela, kanye nokuhlushwa kwe-reactant.
4. Ukungaguquguquki: Ngemva kokusabela kwe-etherification, umkhiqizo ophumayo uyaguquguquki ukuze kuguqulwe noma yimaphi amaqembu asele e-acidic abe yifomu lawo likasawoti we-sodium (i-carboxymethylcellulose sodium). Lokhu kuvame ukufezwa ngokungeza isisombululo se-alkaline, njenge-sodium hydroxide (NaOH), engxubeni yokusabela. Ukungaguquguquki kusiza futhi ukulungisa i-pH yesisombululo nokuqinisa umkhiqizo we-CMC.
5. Ukuhlanza: I-sodium carboxymethylcellulose eluhlaza iyahlanzwa ukuze kususwe ukungcola, ama-reagent angaphenduliwe, kanye nemikhiqizo ephuma engxubeni yokusabela. Izindlela zokuhlanza zingafaka phakathi ukuwasha, ukuhlunga, ukuhlanganisa i-centrifugation, kanye nokomisa. I-CMC ehlanziwe ivame ukugezwa ngamanzi ukuze kususwe i-alkali esele kanye nosawoti, kulandelwe ukuhlunga noma ukuhlanganisa i-centrifugation ukuze kuhlukaniswe umkhiqizo we-CMC oqinile esigabeni soketshezi.
6. Ukomisa: I-sodium carboxymethylcellulose ehlanziwe iyomiswa ekugcineni ukuze kususwe umswakama owedlulele futhi kutholakale okuqukethwe komswakama okufiselekayo kokugcinwa nokucutshungulwa okuqhubekayo. Izindlela zokomisa zingafaka ukomisa emoyeni, ukomisa ngokufutha, noma ukomisa ngemigqomo, kuye ngezici zomkhiqizo ofiselekayo kanye nesilinganiso sokukhiqiza.

Umkhiqizo we-sodium carboxymethylcellulose ophumayo uwuphawuda omhlophe noma oluhlaza okwesibhakabhaka onezinhlayiya ezinhle kakhulu zokuncibilika kwamanzi kanye nezakhiwo ze-rheological. Usetshenziswa kabanzi njenge-ejenti yokujiya, isiqinisekisi, i-binder, kanye ne-rheology modifier ezimbonini ezahlukahlukene, okuhlanganisa ukudla, imithi, izimonyo, izindwangu, kanye nezicelo zezimboni.