I-sodium carboxymethylcellulose(SCMC) iphuma ku-cellulose encibilika emanzini evame ukusetshenziswa ezimbonini ezahlukahlukene, njengokudla, ezemithi, nezimonyo, njenge-thickener, stabilizer, kanye ne-emulsifier. Inqubo yokukhiqiza ye-SCMC ibandakanya izinyathelo ezimbalwa, ezihlanganisa i-alkalization, i-etherification, ukuhlanzwa, nokomisa.

1. I-Alkalization

Isinyathelo sokuqala enqubweni yokukhiqiza ye-SCMC ukufakwa kwe-cellulose alkalization. I-Cellulose itholakala ku-pulp yokhuni noma kumafayibha kakotini, ahlukaniswa abe yizinhlayiya ezincane ngochungechunge lokwelashwa kwemishini namakhemikhali. I-cellulose ewumphumela ibe isiphathwa nge-alkali, njenge-sodium hydroxide (NaOH) noma i-potassium hydroxide (KOH), ukuze kwandiswe ukusebenza kwayo kabusha nokuncibilika.

Inqubo ye-alkalization ngokuvamile ihlanganisa ukuxuba i-cellulose nesisombululo esigxilile se-NaOH noma i-KOH emazingeni okushisa aphakeme nezingcindezi. Ukusabela phakathi kwe-cellulose ne-alkali kubangela ukwakheka kwe-sodium noma i-potassium cellulose, esebenza kakhulu futhi engashintshwa kalula.

2. I-Etherification

Isinyathelo esilandelayo enqubweni yokukhiqiza ye-SCMC i-etherification ye-sodium noma i-potassium cellulose. Le nqubo ihilela ukwethulwa kwamaqembu e-carboxymethyl (-CH2-COOH) kumgogodla we-cellulose ngokusabela nge-chloroacetic acid (ClCH2COOH) noma usawoti wayo we-sodium noma we-potassium.

Ukusabela kwe-etherification ngokuvamile kwenziwa ngengxube yamanzi-ethanol emazingeni okushisa aphakeme nezingcindezi, ngokungezwa kwe-catalyst, njenge-sodium hydroxide noma i-sodium methylate. Ukusabela kuyingozi kakhulu futhi kudinga ukulawula ngokucophelela izimo zokusabela ukuze kugwenywe ukushisa ngokweqile kanye nokonakala komkhiqizo.

Izinga le-etherification, noma inani lamaqembu e-carboxymethyl ngengqamuzana ngayinye ye-cellulose, lingalawulwa ngokulungisa izimo zokusabela, njengokuhlangana kwe-chloroacetic acid kanye nesikhathi sokusabela. Amazinga aphezulu e-etherification aphumela ekuncibilikeni okuphezulu kwamanzi kanye nokujiya kwe-viscosity ye-SCMC ewumphumela.

3. Ukuhlanzwa

Ngemuva kokusabela kwe-etherification, i-SCMC ewumphumela ngokuvamile ingcoliswa ukungcola, okufana ne-cellulose engaphenduliwe, i-alkali, ne-chloroacetic acid. Isinyathelo sokuhlanza sibandakanya ukususwa kwalokhu kungcola ukuze kutholwe umkhiqizo we-SCMC omsulwa nosezingeni eliphezulu.

Inqubo yokuhlanza ngokuvamile ihilela izinyathelo ezimbalwa zokugeza nokuhlunga kusetshenziswa amanzi noma izixazululo ezinamanzi ze-ethanol noma i-methanol. I-SCMC ewumphumela ibe isisetshenziswa i-asidi, efana ne-hydrochloric acid noma i-acetic acid, ukuze kususwe noma iyiphi i-alkali esele futhi kulungiswe i-pH kububanzi obufunekayo.

4. Ukomisa

Isinyathelo sokugcina senqubo yokukhiqiza ye-SCMC ukomiswa komkhiqizo ohlanziwe. I-SCMC eyomisiwe ngokuvamile isesimweni sempushana emhlophe noma imbudumbudu futhi ingaqhubeka icutshungulwa ibe yizinhlobo ezahlukahlukene, njengezisombululo, amajeli, noma amafilimu.

Inqubo yokomisa ingenziwa kusetshenziswa amasu ahlukahlukene, njengokumisa isifutho, ukomisa izigubhu, noma ukomiswa nge-vacuum, kuye ngezakhiwo zomkhiqizo oyifunayo kanye nesilinganiso sokukhiqiza. Inqubo yokomisa kufanele ilawulwe ngokucophelela ukuze kugwenywe ukushisa okudlulele, okungaholela ekuwohlokeni komkhiqizo noma ekushintsheni kombala.

Izicelo ze-Sodium Carboxymethylcellulose

I-sodium carboxymethylcellulose (SCMC) isetshenziswa kabanzi ezimbonini ezahlukahlukene, njengokudla, ezemithi, izimonyo, nokunakekelwa komuntu siqu, ngenxa yokuncibilika kwayo okuhle kwamanzi, ukujiya, ukuzinzisa, kanye nezakhiwo zokuqinisa.

Imboni Yokudla

Embonini yokudla, i-SCMC ivamise ukusetshenziswa njenge-thickener, stabilizer, kanye ne-emulsifier ezinhlobonhlobo zemikhiqizo yokudla, njengezimpahla ezibhakiwe, imikhiqizo yobisi, amasoso, okokugqoka kanye neziphuzo. I-SCMC iphinde isetshenziswe esikhundleni samafutha ekudleni okunamafutha aphansi nokudla okuncishisiwe.