Izakhiwo ezisebenzayo ze-CMC (Carboxymethyl Cellulose)

I-Carboxymethyl cellulose (i-sodium carboxyme thyl cellulose, i-CMC) iphuma ku-carboxymethylated ku-cellulose, eyaziwa nangokuthi i-cellulose gum, futhi iyinhlaka ye-ionic cellulose ebaluleke kakhulu.

I-CMC imvamisa iyinhlanganisela ye-anionic polymer elungiswa ngokusabela i-cellulose yemvelo nge-caustic alkali ne-monochloroacetic acid.Isisindo samangqamuzana ale nhlanganisela siyahlukahluka kusukela ezinkulungwaneni ezimbalwa kuya esigidini esisodwa.

I-CMC ingeyokushintshwa kwe-cellulose yemvelo, futhi Inhlangano Yezokudla Nezolimo yeNhlangano Yezizwe Ezihlangene (i-FAO) kanye neNhlangano Yezempilo Yomhlaba (i-WHO) bayibize ngokusemthethweni ngokuthi “i-cellulose eguquliwe”.Indlela yokuhlanganisa ye-sodium carboxymethyl cellulose yasungulwa ngu-German E. Jansen ngo-1918, futhi yanikezwa ilungelo lobunikazi ngo-1921 futhi yaziwa emhlabeni wonke, yabe isithengiswa eYurophu.

I-CMC isetshenziswa kabanzi ku-petroleum, geological , amakhemikhali ansuku zonke, ukudla, imithi kanye nezinye izimboni, ezaziwa ngokuthi "i-industrial monosodium glutamate".

※Izakhiwo zesakhiwo se-CMC

I-CMC iyimpushana emhlophe noma ekhanyayo ephuzi, eyimbudumbudu noma eqinile.Kuyikhemikhali eyi-macromolecular ekwazi ukumunca amanzi futhi ivuvuke.Uma ikhukhumala emanzini, ingakha ingcina ye-viscous ebonakalayo.I-pH ye-aqueous suspension yi-6.5-8.5.I-substance ayincibiliki kuzincibilikisi zemvelo ezifana ne-ethanol, i-ether, i-acetone ne-chloroform.

I-Solid CMC izinzile ekukhanyeni nasegumbini lokushisa, futhi ingagcinwa isikhathi eside endaweni eyomile.I-CMC iwuhlobo lwe-cellulose ether, evame ukwenziwa ngamalitha kakotini amafushane (okuqukethwe kwe-cellulose kufika ku-98%) noma i-pulp yokhuni, ephathwa nge-sodium hydroxide bese isabela nge-sodium monochloroacetate, isisindo samangqamuzana enhlanganisela singama-6400 (± 1000).Ngokuvamile kunezindlela ezimbili zokulungiselela: indlela yamanzi namalahle kanye nendlela yokuncibilikisa.Kukhona neminye imicu yezitshalo esetshenziselwa ukulungisa i-CMC.

※Izici kanye nezicelo

I-CMC ayiyona nje kuphela i-emulsification stabilizer ne-thickener ezinhle ekufakweni kokudla, kodwa futhi inokuqina okuhle kakhulu kokuqandisa nokuncibilika, futhi ingathuthukisa ukunambitheka komkhiqizo futhi yandise isikhathi sokugcina.

Ngo-1974, iNhlangano Yezokudla Nezolimo yeNhlangano Yezizwe Ezihlangene (i-FAO) kanye neNhlangano Yezempilo Yomhlaba (i-WHO) yagunyaza ukusetshenziswa kwe-CMC emsulwa ekudleni ngemva kocwaningo nokuhlolwa okuqinile kwezinto eziphilayo kanye nobuthi.Ukudla okuphephile (ADI) kwezinga lamazwe ngamazwe kungu-25mg/kg isisindo somzimba/ngosuku.

※Ti-hickening kanye nokuzinza kwe-emulsion

Ukudla i-CMC kungahlanganisa futhi kuzinzise iziphuzo eziqukethe amafutha namaprotheni.Lokhu kungenxa yokuthi i-CMC iba i-colloid ezinzile esobala ngemva kokuncibilika emanzini, futhi izinhlayiya zamaprotheni ziba yizinhlayiya ezineshaji efanayo ngaphansi kokuvikelwa kolwelwesi lwe-colloidal, olungenza izinhlayiya zephrotheni zibe esimweni esizinzile.Inomphumela othile we-emulsifying, ngakho-ke inganciphisa ukungezwani kwendawo phakathi kwamafutha namanzi ngesikhathi esifanayo, ukuze amafutha afakwe ngokugcwele.

I-CMC ingathuthukisa ukuzinza komkhiqizo, ngoba lapho inani le-pH lomkhiqizo lichezuka endaweni ye-isoelectric yeprotheni, i-sodium carboxymethyl cellulose ingakha isakhiwo esiyinhlanganisela nephrotheni, engathuthukisa ukuzinza komkhiqizo.

※Khulisa inqwaba

Ukusetshenziswa kwe-CMC ku-ayisikhilimu kungakhuphula izinga lokunwetshwa kuka-ayisikhilimu, kuthuthukise isivinini sokuncibilika, kunikeze isimo esihle nokunambitha, futhi kulawule usayizi nokukhula kwamakristalu eqhwa ngesikhathi sokuthutha nokugcinwa.Inani elisetshenzisiwe lingu-0.5% wesamba esihlanganisiwe Esilinganiselwe.

Lokhu kungenxa yokuthi i-CMC inokugcinwa kahle kwamanzi kanye nokuhlakazeka, futhi ihlanganisa izinhlayiya zamaprotheni, ama-fat globules, nama-molecule amanzi ku-colloid ukuze kwakheke uhlelo olufanayo noluzinzile.

※I-Hydrophilicity kanye nokubuyiselwa kwamanzi emanzini

Lesi sakhiwo esisebenzayo se-CMC sivame ukusetshenziswa ekukhiqizeni isinkwa, okungenza iyunifomu yekhekhe lezinyosi, ikhulise ivolumu, inciphise ama-drags, futhi ibe nomthelela wokulondoloza ukushisa nokusha;ama-noodle angezwe nge-CMC anomthamo omuhle wokubamba amanzi, ukumelana nokupheka, nokunambitheka okuhle.

Lokhu kunqunywa ukwakheka kwamangqamuzana e-CMC, okuphuma ku-cellulose futhi inenani elikhulu lamaqembu e-hydrophilic ochungechungeni lwamangqamuzana: -OH iqembu, iqembu le-COONa, ngakho-ke i-CMC ine-hydrophilicity engcono kune-cellulose namandla okubamba amanzi.

※ I-Gelation

Thixotropic CMC isho ukuthi amaketanga e-macromolecular anenani elithile lokusebenzisana futhi ajwayele ukwakha isakhiwo esinezinhlangothi ezintathu.Ngemva kokwakhiwa kwesakhiwo esinezinhlangothi ezintathu, i-viscosity yesisombululo iyanda, futhi ngemva kokuphulwa kwesakhiwo se-three-dimensional, i-viscosity iyancipha.I-thixotropy phenomenon ukuthi ushintsho olubonakalayo lwe-viscosity luncike esikhathini.

Thixotropic CMC idlala indima ebalulekile ohlelweni lwe-gelling futhi ingasetshenziswa ukwenza i-jelly, ujamu nokunye ukudla.

Ingasetshenziswa njenge-clarifier, i-foam stabilizer, ukwandisa ukuzwakala komlomo

I-CMC ingasetshenziswa ekukhiqizweni kwewayini ukwenza ukunambitheka kube lula futhi kucebile ngokunambitha okude;ingasetshenziswa njenge-foam stabilizer ekukhiqizeni ubhiya ukwenza igwebu licebile futhi lihlale isikhathi eside futhi lithuthukise ukunambitheka.

I-CMC iwuhlobo lwe-polyelectrolyte, olungase lubandakanyeke ekuphenduleni okuhlukahlukene ewayinini ukuze kugcinwe ibhalansi yomzimba wewayini.Ngesikhathi esifanayo, iphinde ihlanganise namakristalu akhiwe, ukushintsha ukwakheka kwamakristalu, ukuguqula izimo zokuba khona kwamakristalu ewayini, futhi kubangele imvula.Ukuhlanganiswa kwezinto.