Focus on Cellulose ethers

Ukulungiswa kwe-carboxymethyl cellulose

I-Carboxymethyl Cellulose (isiNgisi: I-Carboxymethyl Cellulose, i-CMC ngamafuphi) iyisengezo sokudla esisetshenziswa kakhulu, futhi usawoti wayo we-sodium (sodium carboxymethyl cellulose) uvame ukusetshenziswa njenge-thickener nokunamathisela.

I-Carboxymethyl cellulose ibizwa nge-industrial monosodium glutamate, esetshenziswa kabanzi ekukhiqizeni izimboni futhi iletha inani elikhulu lokusetshenziswa emikhakheni ehlukahlukene yokukhiqiza. I-Carboxymethyl cellulose iyimpuphu, engenabuthi, kodwa kulula ukuyincibilika emanzini. Iyancibilika emanzini abandayo nasemanzini ashisayo, kodwa ayincibiliki ezihlangwini zemvelo. Izoba uketshezi lwe-viscous ngemuva kokuqedwa, kepha i-viscosity izohluka ngenxa yokukhuphuka nokwehla kwezinga lokushisa. Ngenxa yezakhiwo zayo ezikhethekile, kunezidingo eziningi ezikhethekile zokugcina nokuthutha.

Izakhiwo zomzimba namakhemikhali

I-Carboxymethyl cellulose yinto emhlophe noma ephuzi ekhanyayo, engenaphunga, ayinambitheki, ama-hygroscopic granules, impushana noma imicu emihle.

※Pukulungiswa

I-Carboxymethylcellulose ihlanganiswa ukusabela kwe-base-catalyzed ye-cellulose ne-chloroacetic acid. Amaqembu e-polar (organic acid) e-carboxyl enza i-cellulose inyibilike futhi isebenze ngamakhemikhali. Ngemva kokusabela kokuqala, ingxube ewumphumela yakhiqiza cishe u-60% CMC kanye no-40% kasawoti (i-sodium chloride ne-sodium glycolate). Umkhiqizo ubizwa ngokuthi i-CMC yezimboni yezihlanzi. Lawa masawoti asuswa kusetshenziswa inqubo eyengeziwe yokuhlanza ukuze kukhiqizwe i-CMC emsulwa ukuze isetshenziswe ekudleni, emithini yemithi kanye nakuma-dentfrices (i-toothpaste). Amabanga aphakathi nendawo “ahlanziwe semi-purified” nawo akhiqizwa, avame ukusetshenziswa ekufakweni kwephepha okufana nokubuyiselwa kwemibhalo egciniwe. Izakhiwo ezisebenzayo ze-CMC zincike ezingeni lokushintshwa kwesakhiwo se-cellulose (okungukuthi, mangaki amaqembu e-hydroxyl abamba iqhaza ekuphenduleni esikhundleni), kanye nobude beketanga lesakhiwo somgogodla we-cellulose kanye nezinga lokuhlanganisa komgogodla we-cellulose. . I-Carboxymethyl esikhundleni.

※Aisicelo

I-Carboxymethylcellulose isetshenziswa ekudleni njenge-viscosity modifier noma i-thickener ngaphansi kwenombolo E466 noma i-E469 (nge-enzymatic hydrolysis) kanye nokusimamisa ama-emulsion emikhiqizweni eyahlukene, kuhlanganise no-ayisikhilimu. Iphinde ibe yingxenye yemikhiqizo eminingi okungeyona eyokudla efana nokuxubha amazinyo, okokuthambisa, amaphilisi okudla, opende abasuselwe emanzini, okokuhlanza, izinto zokulinganisa izindwangu, ukupakishwa okuphinda kusetshenziswe okushisayo kanye nemikhiqizo yamaphepha eyahlukene. Isetshenziswa ngokuyinhloko ngoba i-viscosity ephezulu, ayinabo ubuthi futhi ngokuvamile ibhekwa njenge-hypoallergenic njengoba imicu yomthombo oyinhloko i-softwood wood pulp noma i-cotton linters. I-Carboxymethylcellulose isetshenziswa kakhulu ekudleni okungenayo i-gluten nokuncishisiwe okunamafutha. Ezihlahleni zokuwasha, isetshenziswa njengenhlabathi elenga i-polymer eklanyelwe ukufaka ukotini nezinye izindwangu ze-cellulosic, okudala umgoqo okhokhiswa kabi enhlabathini yotshwala bokugeza. I-Carboxymethylcellulose isetshenziswa njenge-lubricant ezinyembezini zokwenziwa. I-Carboxymethylcellulose iphinde isetshenziswe njenge-ejenti yokuqina, isibonelo, embonini yokumba uwoyela, lapho iyingxenye yodaka lokumba, lapho isetshenziswa khona njenge-modifier viscosity kanye ne-ejenti yokugcinwa kwamanzi. Isibonelo, i-sodium CMC (Na CMC) yasetshenziswa njengesilawuli esingalungile sokulahlekelwa izinwele konogwaja. Izindwangu ezinithiwe ezenziwe nge-cellulose, ezifana nekotini noma i-viscose rayon, zingaguqulwa zibe ama-CMC futhi zisetshenziswe emisebenzini yezokwelapha ehlukahlukene.


Isikhathi sokuthumela: Dec-03-2022
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