I-Carboxymethyl cellulose (CMC) iyi-polymer enenani elibalulekile lezimboni. I-anionic cellulose ether encibilika emanzini etholakala ku-cellulose yemvelo. I-Cellulose ingenye yama-polymers e-organic amaningi kakhulu emvelweni futhi iyingxenye eyinhloko yezindonga zamaseli ezitshalo. I-Cellulose ngokwayo inokuncibilika okungekuhle emanzini, kodwa ngokuguqulwa kwamakhemikhali, i-cellulose ingashintshwa ibe okuphuma kokunye nokuncibilika okuhle kwamanzi, futhi i-CMC ingenye yazo.
Isakhiwo samangqamuzana e-CMC sitholwa ngokufaka i-hydroxyl (—OH) ingxenye ye-cellulose nge-chloroacetic acid (ClCH2COOH) ukuze kukhiqizwe i-carboxymethyl substituent (—CH2COOH). Isakhiwo se-CMC sigcina ukwakheka kweketango le-β-1,4-glucose ye-cellulose, kodwa amanye amaqembu e-hydroxyl kuwo athathelwa indawo amaqembu e-carboxymethyl. Ngakho-ke, i-CMC igcina izici ze-polymer chain of cellulose futhi inokusebenza kweqembu le-carboxymethyl.
Izakhiwo zamakhemikhali ze-CMC
I-CMC iyi-polymer anionic. Njengoba iqembu le-carboxyl (—CH2COOH) esakhiweni salo likwazi ukwenza i-ionize ukuze likhiqize amashaji angalungile esixazululweni esinamanzi, i-CMC ingenza isixazululo se-colloidal esizinzile ngemva kokuncibilika emanzini. Ukunyibilika kwamanzi kanye nokuncibilika kwe-CMC kuthintwa yi-degree of substitution (DS) kanye nezinga le-polymerization (DP). Izinga lokushintsha lisho inani lamaqembu e-hydroxyl athathelwa indawo amaqembu e-carboxyl kuyunithi ngayinye ye-glucose. Ngokuvamile, ukuphakama kwezinga lokushintsha, kungcono ukuncibilika kwamanzi. Ngaphezu kwalokho, ukuncibilika kanye ne-viscosity ye-CMC kumanani ahlukene we-pH nakho kuhlukile. Ngokuvamile, ibonisa ukuncibilika okungcono nokuzinza ngaphansi kwezimo ezingathathi hlangothi noma ezine-alkali, kuyilapho ngaphansi kwezimo ezine-acidic, ukuncibilika kwe-CMC kuzokwehla futhi kungase kudume.
Izakhiwo ezibonakalayo ze-CMC
I-viscosity yesisombululo se-CMC ingenye yezakhiwo zayo ezibaluleke kakhulu zomzimba. I-viscosity yayo ihlobene nezici eziningi, okuhlanganisa ukugxila kwesixazululo, izinga lokushintshwa, izinga le-polymerization, izinga lokushisa kanye nenani le-pH. Lesi sici se-viscosity se-CMC siyenza ikwazi ukukhombisa ukujiya, ukugawula kanye nokusimamisa imiphumela ezinhlelweni eziningi. I-viscosity ye-CMC nayo inezici zokunciphisa i-shear, okungukuthi, i-viscosity izokwehla ngaphansi kwamandla aphezulu okugunda, okwenza kube nenzuzo ezinhlelweni ezithile ezidinga uketshezi oluphezulu.
Izindawo zokufaka izicelo ze-CMC
Ngenxa yezakhiwo zayo ezihlukile zomzimba namakhemikhali, i-CMC isetshenziswa kabanzi emikhakheni eminingi. Nazi ezinye zezindawo eziyinhloko zokufaka isicelo:
Imboni yokudla: I-CMC isetshenziswa njenge-thickener, stabilizer kanye ne-emulsifier embonini yokudla. Kungathuthukisa ukuthungwa nokuzinza kokudla, njengezicelo ezivamile ku-ayisikhilimu, iyogathi, ijeli nesoso.
Imboni yezokwenziwa kwemithi: I-CMC isetshenziswa njengesamukeli sezidakamizwa kanye nesinamathiselo samaphilisi emkhakheni wezokwelapha. Ibuye isetshenziswe njenge-moisturizer kanye ne-ejenti eyenza ifilimu ekugqokeni amanxeba.
Amakhemikhali ansuku zonke: Emikhiqizweni yansuku zonke enjengomuthi wokuxubha, ishampoo, okokugeza, njll., i-CMC isetshenziswa njenge-thickener, i-ejenti elengayo kanye nesiqinisi ukusiza umkhiqizo ugcine ukubukeka nokusebenza okuhle.
Ukumba uwoyela: I-CMC isetshenziswa njengesithuthukisi se-viscosity kanye ne-ejenti yokuhlunga kuketshezi lokumba uwoyela, olungathuthukisa izici ze-rheological zoketshezi lokumba futhi luvimbele ukungena ngokweqile koketshezi lokumba.
Izimboni zendwangu nephepha: Embonini yendwangu, i-CMC isetshenziselwa i-textile pulp kanye nama-ejenti wokuqeda, kuyilapho embonini yokwenza iphepha, isetshenziswa njenge-ejenti eqinisayo kanye ne-ejenti yokulinganisa iphepha ukuze kuthuthukiswe amandla nokushelela kwephepha.
Ukuvikelwa kwemvelo nokuphepha
I-CMC iyinto evumelana nemvelo engacekelwa phansi ama-microorganisms emvelweni, ngakho-ke ngeke ibangele ukungcola kwesikhathi eside emvelweni. Ngaphezu kwalokho, i-CMC inobuthi obuphansi nokuphepha okuphezulu, futhi inomlando omuhle wokuphepha ekudleni nasezinhlelweni zemithi. Noma kunjalo, ngenxa yokukhiqizwa nokusetshenziswa kwayo ngezinga elikhulu, kusafanele kuqashelwe ekwelashweni kwemfucuza yamakhemikhali engase yenziwe phakathi nenqubo yokukhiqiza.
I-Carboxymethyl cellulose (CMC) iyi-polymer anionic encibilikayo esebenzayo ehlukahlukene. I-CMC etholwe ngokuguqulwa kwamakhemikhali igcina izici ezinhle kakhulu ze-cellulose yemvelo ngenkathi inokuncibilika okuhle kwamanzi kanye nezakhiwo eziyingqayizivele zomzimba namakhemikhali. Ngokuqiniswa kwayo, i-gelling, ukuqiniswa kanye neminye imisebenzi, i-CMC isetshenziswe kabanzi ezimbonini eziningi ezifana nokudla, imithi, amakhemikhali ansuku zonke, ukumba uwoyela, izindwangu kanye nokwenza amaphepha. Ukuvikelwa kwemvelo nokuphepha kwayo kuyenza ibe isengezo esithandwayo emikhiqizweni eminingi.
Isikhathi sokuthumela: Aug-23-2024