I-sodium carboxymethylcellulose(SCMC) yimveliso ye-cellulose enyibilikayo emanzini esetyenziswa ngokuqhelekileyo kumashishini ahlukeneyo, njengokutya, amayeza, kunye nezithambiso, njenge-thickener, stabilizer, kunye ne-emulsifier. Inkqubo yokwenziwa kwe-SCMC ibandakanya amanyathelo aliqela, kuquka ialkalization, i-etherification, ukucocwa, kunye nokomisa.

1. I-alkalization

Inyathelo lokuqala kwinkqubo yokwenziwa kwe-SCMC kukwenziwa kwe-alkalization ye-cellulose. I-Cellulose iphuma kwi-pulp yomthi okanye i-cotton fibers, ehlulwe ibe ngamancinci amancinci ngoluhlu lwezonyango zoomatshini kunye neekhemikhali. I-cellulose ebangelwayo iphathwa nge-alkali, njenge-sodium hydroxide (NaOH) okanye i-potassium hydroxide (KOH), ukwandisa ukusebenza kwayo kunye nokunyibilika.

Inkqubo ye-alkalization ibandakanya ukuxuba i-cellulose kunye nesisombululo esigxininisiweyo se-NaOH okanye i-KOH kumaqondo aphezulu kunye noxinzelelo. Ukusabela phakathi kwe-cellulose kunye ne-alkali kubangela ukubunjwa kwe-sodium okanye i-potassium cellulose, esebenza kakhulu kwaye inokuguqulwa ngokulula.

2. I-Etherification

Isinyathelo esilandelayo kwinkqubo yokuvelisa ye-SCMC yi-etherification ye-sodium okanye i-potassium cellulose. Le nkqubo ibandakanya ukuqaliswa kwamaqela e-carboxymethyl (-CH2-COOH) kwi-backbone ye-cellulose ngokuphendula nge-chloroacetic acid (ClCH2COOH) okanye ityuwa ye-sodium okanye i-potassium.

Ukusabela kwe-etherification ngokuqhelekileyo kuqhutyelwa kumxube wamanzi-ethanol kumaqondo obushushu aphakamileyo kunye noxinzelelo, kunye nokongezwa kwe-catalyst, njenge-sodium hydroxide okanye i-sodium methylate. I-reaction i-exothermic kakhulu kwaye ifuna ulawulo olunyamekileyo lweemeko zokusabela ukunqanda ukushisa okugqithisileyo kunye nokuhla kwemveliso.

Iqondo le-etherification, okanye inani lamaqela e-carboxymethyl nge-cellulose molekyuli, inokulawulwa ngokulungelelanisa iimeko zokusabela, ezifana nokuxinwa kwe-chloroacetic acid kunye nexesha lokuphendula. Iqondo eliphezulu lokuxutywa kwe-etherification likhokelela ekunyibilikeni okuphezulu kwamanzi kunye ne-viscosity engqindilili yesiphumo se-SCMC.

3. Ukusulungekiswa

Emva kokusabela kwe-etherification, iziphumo ze-SCMC zihlala zingcolisekile, njengeselulosi engaphendulwanga, ialkali, kunye ne-chloroacetic acid. Inyathelo lokucoca libandakanya ukususwa kobu kungcola ukufumana imveliso yeSCMC esulungekileyo nekumgangatho ophezulu.

Inkqubo yokucoca ibandakanya amanyathelo amaninzi okuhlamba kunye nokuhluza usebenzisa amanzi okanye izisombululo ezinamanzi ze-ethanol okanye i-methanol. Isiphumo se-SCMC ke singathathi hlangothi nge-asidi, efana ne-hydrochloric acid okanye i-acetic acid, ukususa nayiphi na i-alkali eseleyo kunye nokulungelelanisa i-pH kuluhlu olufunwayo.

4. Ukomisa

Inyathelo lokugqibela kwinkqubo yokwenziwa kwe-SCMC kukomiswa kwemveliso esulungekileyo. I-SCMC eyomileyo ihlala ikwimo yomgubo omhlophe okanye igranule kwaye inokuqhubekekiswa ngakumbi kwiindlela ezahlukeneyo, ezinjengezisombululo, iijeli, okanye iifilimu.

Inkqubo yokomisa inokwenziwa kusetyenziswa iindlela ezahlukeneyo, njengokumisa isitshizi, ukomisa igubu, okanye ukomisa ngevacuum, kuxhomekeke kwiipropati ezifunwayo zemveliso kunye nesikali sokuvelisa. Inkqubo yokomisa kufuneka ilawulwe ngononophelo ukuphepha ubushushu obugqithisileyo, obunokubangela ukuthotywa kwemveliso okanye ukuguquka kombala.

Ukusetyenziswa kweSodium Carboxymethylcellulose

I-sodium carboxymethylcellulose (SCMC) isetyenziswa kakhulu kumashishini ahlukeneyo, njengokutya, amayeza, izinto zokuthambisa, kunye nokhathalelo lomntu, ngenxa yokunyibilika kwayo okugqwesileyo kwamanzi, ukutyeba, ukuzinzisa, kunye neempawu zokuthambisa.

Ishishini lokutya

Kwishishini lokutya, i-SCMC iqhele ukusetyenziswa njenge-thickener, stabilizer, kunye ne-emulsifier kuluhlu olubanzi lweemveliso zokutya, ezifana neempahla ezibhakiweyo, iimveliso zobisi, iisosi, izinxibo kunye neziselo. I-SCMC ikwasetyenziswa njenge-fat replacer ku-fat-low-fat and reduce-calorie foods.