Focus on Cellulose ethers

Ibanga lokudla le-sodium carboxymethyl cellulose (CMC)

I-sodium carboxymethyl cellulose ibonwa njengesengezo sokudla esiphephile. Yamukelwa ezweni lami ngeminyaka yawo-1970 futhi yasetshenziswa kakhulu ngeminyaka yawo-1990. Isetshenziswa kabanzi futhi iyinani elikhulu kakhulu le-cellulose emhlabeni namuhla.

Ukusetshenziswa okuyisisekelo

Isetshenziswa njenge-thickener embonini yokudla, njengomthwali wezidakamizwa embonini yezemithi, futhi njenge-binder kanye ne-anti-redeposition ejenti embonini yamakhemikhali yansuku zonke. Embonini yokunyathelisa nokudaya, isetshenziswa njenge-colloid evikelayo ye-ejenti yokulinganisa nokunamathisela okuphrinta, njll. Ingasetshenziswa njengengxenye yoketshezi lwe-oil fracturing embonini ye-petrochemical. Kuyabonakala ukuthi i-sodium carboxymethyl cellulose inezinhlobo eziningi zokusetshenziswa.

Ukusetshenziswa kwe-CMC ekudleni

Ukusetshenziswa kwe-CMC emsulwa ekudleni kuvunywe yi-FAO kanye ne-WHO. Igunyazwa ngemva kocwaningo nokuhlolwa okuqinile kwebhayoloji kanye nobuthi. Ukuthathwa okuphephile okujwayelekile kwamazwe ngamazwe (ADI) kungu-25mg/(kg·d) , okungukuthi, cishe u-1.5 g/d ngomuntu ngamunye. Kuye kwabikwa ukuthi akukho ukusabela okunobuthi lapho ukuhlolwa kufinyelela ku-10 kg. I-CMC ayiyona nje i-emulsion stabilizer enhle kanye ne-thickener ezinhlelweni zokudla, kodwa futhi inokuqina okuhle kakhulu kokuqandisa nokuncibilika, futhi ingathuthukisa ukunambitheka komkhiqizo futhi yandise isikhathi sokugcina. Umthamo obisini lwesoya, u-ayisikhilimu, u-ayisikhilimu, ijeli, isiphuzo nokudla okusemathinini cishe u-1% kuya ku-1.5%. I-CMC ingase futhi yakhe i-emulsion dispersion ezinzile ngoviniga, isoso yesoya, amafutha emifino, ijusi yezithelo, umhluzi, ijusi yemifino, njll. Umthamo ngu-0.2% kuya ku-0.5%. Ikakhulukazi, inezici ezinhle kakhulu zokumisa amafutha ezilwane nemifino, amaprotheni kanye nezixazululo ezinamanzi, okwenza kube ne-emulsion e-homogeneous enezakhiwo ezizinzile. Ngenxa yokuphepha nokuthembeka kwayo, umthamo wayo awukhawulelwe yi-ADI ejwayelekile yenhlanzeko yokudla. I-CMC iye yathuthukiswa ngokuqhubekayo emkhakheni wokudla, futhi eminyakeni yamuva nje, kwenziwa ucwaningo ngokusetshenziswa kwe-sodium carboxymethyl cellulose ekukhiqizeni iwayini.


Isikhathi sokuthumela: Nov-08-2022
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