I-viscosity ye-sodium carboxymelyl celtulose nayo ihlukaniswe amamaki amaningi ngokuya ngokusetshenziswa okuhlukile. Ukubonakala kohlobo lokugeza kungu-10 ~ 70 (ngezansi kwe-100), umkhawulo ophezulu wokubona kusuka ngo-200 ~ 1200 wokwakha amanani enziwa kanye nezinye izimboni, futhi i-viscosity yebanga lokudla liphakeme kakhulu. Zonke zingenhla kwe-1000, futhi ukubonwa kwezimboni ezahlukahlukene akufani.
Ngenxa yohlobo lwayo olubanzi lokusebenzisa.
I-viscosity ye-sodium carboxymelyl celtulose ithinteka isisindo sayo samangqamuzana, ukugxila, izinga lokushisa kanye ne-ph valule I-Pectin, i-gum arabic kanye nesitashi kanye nokutholwa kwayo kunokuvumelana okuhle (okungukuthi ie pernergistic umphumela).
Lapho inani le-PH lingu-7, i-viscosity ye-sodium carboxymelyl lungisa solution ephezulu kakhulu, futhi lapho inani le-PH lingu-4 ~ 11, lizinzile. I-Carboxymethylcelselcellellulose ngendlela ye-Alkali Metal ne-Amonmonium Salts incane emanzini. I-Ugapent Metal Ion Ca2 +, MG2 +, FE2 + ingakuthinta ukubonakala kwayo. Izinsimbi ezisindayo ezinjengesiliva, i-barium, i-chromium noma i-FE3 + zingenza zikhiphe ngaphandle kwesixazululo. Uma ukugcwala kwama-ion kulawulwa, njengokungezwa kwe-ejelati ye-ejelati ye-agent citric, kungakhiwa isixazululo esiningi se-viscous, okuholela ekutholeni okuthambile noma okunzima.
I-Sodium Carboxymethyl Cellulose uhlobo lwe-cellulose yemvelo, evame ukwenziwa ngokotini ukotini noma ukugawulwa kwezinkuni njengezinto ezivuthiwe futhi ngaphansi kokuthethelwa kwe-monochloropetic acid nge-alkaline izimo ngaphansi kwezimo ze-alkali.
Ngokusho kwemininingwane yezinto zokwakha ezivuthiwe kanye nokufakwa esikhundleni kwe-hydroxyl hydrogen kuyunithi ye-cellulose d-glucose yiqembu le-carboxymethyl, ama-polymer ancibilikina anamazinga ahlukile okufakwa esikhundleni kanye nokusatshalaliswa kwesisindo okuhlukile kwama-molecular atholakala.
Ngoba i-sodium carboxymelyl cellulose inezimpawu eziningi ezihlukile nezihle kakhulu, isetshenziswa kabanzi embonini yamakhemikhali yansuku zonke, ukudla nomuthi kanye nokunye ukukhiqizwa kwezimboni.
Enye yezinkomba ezibaluleke kakhulu zeSodium Carboxymethyl celtulose iyindlela yokubona i-sodium carboxylelyls. Inani le-viscosity lihlobene nezici ezahlukahlukene ezifana nokuhlushwa, izinga lokushisa kanye nezinga le-shear. Kodwa-ke, izici ezifana nokuhlushwa, izinga lokushisa kanye nezinga le-shear yizici zangaphandle ezithinta ukubonakala kwe-sodium carboxyllsyl.
Isisindo sayo samangqamuzana kanye nokusatshalaliswa kwama-molecular kuyizinto zangaphakathi ezithinta ukubonwa kwe-sodium carboxyylyl solution. Ukulawulwa kokukhiqizwa kanye nokuthuthukiswa komkhiqizo kwe-sodium carboxymethyl cellulose, kucwaninga isisindo sayo samangqamuzana kanye nokusatshalaliswa kwesisindo molecular kunenani elibaluleke kakhulu lereferensi, ngenkathi i-viscoty isibalo esingadlala indima ethile kuphela.
Imithetho kaNewton ku-Rheology, sicela ufunde okuqukethwe okufanele kwe- "Rheology" ku-chemistry engokwenyama, kunzima ukuchaza emshweni owodwa noma emibili. Uma kufanele ukusho: Ikhambi le-Culte of CMC eduze koketshezi lweNewtonia, ukucindezelwa kwe-shear kulingana nezinga lokusika, kanye ne-coefficient ehambelana nalo libizwa ngokuthi i-viscosity coefflity noma i-kinematic viscosity.
I-Viscosity isuselwa emabuthweni aphakathi kwamaketanga ama-cellulose molecular, kufaka phakathi amabutho ahlukile kanye nama-hydrogen bond. Ikakhulu, i-polymerization ye-cellulose derivatives akuyona isakhiwo se-linear kodwa isakhiwo esinamagatsha amaningi. Kwikhambi, iselviseli eminingi enamagatsha amaningi ahlanganiswe ukwakha isakhiwo senethiwekhi yendawo. Inhlanganisela lesakhiwo, likhulisa amabutho phakathi kwamaketanga amamolekyuli esixazululweni esidingekayo.
Ukukhipha ukugeleza kwesixazululo se-Cellulose Derivatives, amandla phakathi kwamaketanga ama-molefanelar kumele anqotshwe, ngakho-ke isixazululo esiphezulu se-polymerization sidinga amandla amakhulu ukukhiqiza ukugeleza. Ngokulinganiswa kwe-visoluty, amandla kwikhambi le-CMC amandla adonsela phansi. Ngaphansi kwesimo sokuqina okuqhubekayo, ukwakheka kwekhethini lesisombululo se-CMC esineziqu ezinkulu ze-polymerization kune-Force enkulu, futhi ukugeleza kuhamba kancane. Ukugeleza okuhamba kancane kukhombisa ukubonakala.
I-viscosity ye-sodium carboxyyl celtulose ihlobene kakhulu nesisindo se-molecular, futhi inokuncane esingakwenza ngezinga lokufakwa esikhundleni. Lapho likhudlwana izinga lokufaka esikhundleni, isisindo esikhulu esimaMoleksi
Usawoti we-sodium we-cellulose carboxylelyl ether, i-anionic cellulose ether, i-anionic cellulose ether, i-fibrous omhlophe emhlophe noma i-granule, enobunzima be-0.5-0.7 g / cm3, icishe ibe ne-odorcopic. Kulula ukuhlakazeka emanzini ukwakha ikhambi le-colloidal elibonakalayo, futhi kuyakhohlisa ku-organic solvents njenge-ethanol. Ikhambi le-1% elinamanzi angu-6.5 kuye ku-8.5. Lapho i-10 noma <5, i-viscosity ye-sodium carboxboxylethylcellellellulose incishiswa kakhulu, futhi ukusebenza kuhamba phambili lapho pH = 7.
Kuyaqina. I-viscosity ikhuphuka ngokushesha ngaphansi kwama-20 ℃, futhi izinguquko kancane ku-45 ℃. Ukushisa isikhathi eside ngenhla kwe-80 ℃ kungahle kuncishiswe i-colloid futhi kunciphise ukubonwa kanye nokusebenza kakhulu. Kuyancibilika kalula emanzini, futhi ikhambi lisobala; Kuzinzile kakhulu kusisombululo se-alkali, futhi kulula uku-hydrolyze phambi kwe-acid. Lapho inani le-PH lingu-2-3, lizolunga.
Isikhathi Sokuthumela: Nov-07-2022