Inqubo yokukhiqiza ye-sodium carboxymethylcellellulose

Inqubo yokukhiqiza ye-sodium carboxymethylcellellellellellose (CMC) ifaka izinyathelo eziningana, kufaka phakathi ukulungiswa kwe-cellulose, ukusheshisa, ukuhlanzwa, nokumiswa. Nasi isibukezo senqubo ejwayelekile yokukhiqiza:

1. Ukulungiselela i-cellulose: Inqubo iqala ngokulungiswa kwe-cellulose, okuvame ukutholwa kusuka kuma-pulp okhalweninzi noma ekotini. I-cellulose ihlanjululwa okokuqala futhi yahlanjululwa ukususa ukungcola okufana ne-lignin, i-hemishellulose, nezinye izinto ezingcolile. Le mbumbulu ehlanziwe isebenza njengokuqala kokukhiqizwa kwe-CMC.
2. I-Alkalization: I-cellulose ehlanziwe isushwe ngesisombululo se-alkali, imvamisa i-soodium hydroxide (uNaoh), ukwandisa ukuvumelanisa kwayo futhi yenza lula ukusabela okulandelayo kokuthezeka. I-Alkalization ibuye isize ekuvuleni futhi ivule imicu ye-cellulose, ibenze bafinyeleleke kalula ekuguqulweni kwamakhemikhali.
3. Ukusabela kwe-Etherification: I-alkalised cellulose yaphendulwa nge-monochlorose acid (MCA) noma usawoti wayo we-sodium, i-sodium monochlororetate (i-SMCA), phambi kwesimo esilawulwayo ngaphansi kwezimo ezilawulwayo. Lokhu kuphendula okuthekezele kufaka ukufakwa esikhundleni samaqembu ama-hydroxyl emaqenjini we-cellulose enamaqembu e-carboxymethyl (-ch2ona). Izinga lokufaka esikhundleni (DS), elimele inani eliphakathi lamaqembu e-carboxymethyl ngeyunithi ye-glucose ye-cellulose, ingalawulwa ngokulungisa amapharamitha wokuphendula anjengezinga lokushisa, isikhathi sokuphendula, kanye nokugxila okusebenzayo.
4. Ukungathathi hlangothi: Ngemuva kokuphendula ukusheshisa, umkhiqizo ophumelelayo awuthathi hlangothi ukuze uguqule noma yimaphi amaqembu asele acidical eforium yabo (i-carboxymethylcellulose sodium). Lokhu kuvame ukutholwa ngokungeza isixazululo se-alkaline, njenge-sodium hydroxide (NAOH), kwingxube yokusabela. Ukungathathi hlangothi kuyasiza ukuguqula i-pH yesisombululo futhi uzinze umkhiqizo we-CMC.
5. Ukuhlanzwa: I-Crude Sodium Carboxyboxylselcellellulose kuhlanzwa ukususa ukungcola, ama-reagents angavuleleki, nemikhiqizo evela kwinhlanganisela yokusabela. Izindlela zokuhlanza zingafaka ukugeza, ukufombula, centrifugation, nokomisa. I-CMC ehlanziwe ngokuvamile igezwa ngamanzi ukususa ama-alkali anensana kanye nosawoti, elandelwa ukulungiswa noma i-centrifugation ukuhlukanisa umkhiqizo oqinile we-CMC kusuka esigabeni se-CMC esiqinile.
6. Ukomisa: I-sodium carbox lylethylcellose ekugcineni yomisiwe ukususa umswakama owengeziwe futhi uthole okuqukethwe umswakama oyifunayo ukuze kugcinwe ukugcinwa nokuqhubeka. Izindlela zokomisa zingafaka ukomiswa komoya, ukomisa uwomisa, noma owomile wesigubhu, ngokuya ngezimpawu zomkhiqizo ozifunayo kanye nokukhiqiza isilinganiselo.

Umkhiqizo we-carboxboxylcellellose ophumelele umhlophe owumhlophe kuya ku-powder emhlophe noma ebonakalayo enezinto ezinhle kakhulu ze-solubelity yamanzi nezinto ze-rheological. Kusetshenziswa kabanzi njenge-ejenti ekhuthele, i-stabilizer, kanye nokushintsha kwe-Rheology emikhakheni ehlukahlukene, kubandakanya nokudla, amakhamishini, izimonyo, izindwangu kanye nezicelo zezimboni.