Izakhiwo ze-Sodium Carboxymethyl cellulose kanye Nezici Ezithonyayo ku-CMC Viscosity

I-Sodium Carboxymethyl cellulose (CMC) iyi-polymer esetshenziswa kakhulu ezinhlelweni ezahlukahlukene zezimboni, okubandakanya ukudla, imithi, imikhiqizo yokunakekela abantu, kanye nezinto zokuhlanza. Kuyi-derivative encibilika emanzini ye-cellulose ekhiqizwa ukusabela kwe-cellulose nge-chloroacetic acid ne-sodium hydroxide. I-CMC iguquguquka kakhulu futhi inezinhlobonhlobo zezakhiwo eziyenza ilungele izinhlelo zokusebenza ezahlukahlukene. Kulesi sihloko, sizoxoxa ngezakhiwo ze-CMC nezici ezithonya i-viscosity yayo.

Izakhiwo ze-CMC:

1. Ukunyibilika: I-CMC incibilika kakhulu emanzini, okwenza kube lula ukuyiphatha nokuyisebenzisa ezinhlelweni ezahlukene. Ingaphinda incibilike kwezinye izinyibilikisi zemvelo, njenge-ethanol ne-glycerol, kuye ngezinga layo lokushintsha.
2. I-Viscosity: I-CMC iyi-polymer ebukeka kakhulu engakha amajeli ekugxilweni okuphezulu. I-viscosity ye-CMC ithonywa izici ezihlukahlukene, njengezinga lokushintsha, ukugxilisa ingqondo, i-pH, izinga lokushisa, nokugxila kwe-electrolyte.
3. I-Rheology: I-CMC ikhombisa ukuziphatha kwe-pseudoplastic, okusho ukuthi i-viscosity yayo iyancipha ngokunyuka kwezinga lokugunda. Lesi sakhiwo siwusizo ekusetshenzisweni lapho i-viscosity ephezulu iyadingeka ngesikhathi sokucubungula, kodwa i-viscosity ephansi iyadingeka ngesikhathi sokufaka isicelo.
4. Ukuzinza: I-CMC izinzile phezu kwebanga elibanzi le-pH nezimo zezinga lokushisa. Iphinde imelane nokuwohloka kwe-microbial, okuyenza ifanelekele ukusetshenziswa ekudleni nasezinhlelweni zemithi.
5. Izakhiwo zokwakha ifilimu: I-CMC ingenza amafilimu amancanyana, aguqukayo uma omisiwe. Lawa mafilimu anezindawo ezinhle zokuthibela futhi angasetshenziswa njengezingubo zokufaka izicelo ezihlukahlukene.

Izinto ezithonya i-CMC viscosity:

1. I-Degree of substitution (DS): Izinga lokushintsha inombolo eyisilinganiso yamaqembu e-carboxymethyl ngeyunithi ngayinye ye-anhydroglucose ku-molecule ye-cellulose. I-CMC ene-DS ephakeme inezinga eliphezulu lokushintshwa, okuholela ekubonakaleni okuphezulu. Lokhu kungenxa yokuthi i-DS ephakeme iholela emaqenjini e-carboxymethyl engeziwe, okwandisa inani lama-molecule amanzi aboshwe ku-polymer.
2. Ukugxila: I-viscosity ye-CMC iyanda ngokugxila okukhulayo. Lokhu kungenxa yokuthi ekugxilweni okuphezulu, kukhona amaketanga e-polymer amaningi, okuholela ezingeni eliphakeme lokubanjwa kanye nokwanda kwe-viscosity.
3. I-pH: I-viscosity ye-CMC ithintwa i-pH yesisombululo. Nge-pH ephansi, i-CMC ine-viscosity ephakeme ngoba amaqembu e-carboxyl asesimweni sawo se-protonated futhi angasebenzisana ngokuqinile nama-molecule amanzi. Emazingeni aphezulu e-pH, i-CMC ine-viscosity ephansi ngenxa yokuthi amaqembu e-carboxyl asesimweni sawo esisusiwe futhi anokusebenzelana okuncane nama-molecule amanzi.
4. Izinga lokushisa: I-viscosity ye-CMC yehla ngokukhuphuka kwezinga lokushisa. Lokhu kungenxa yokuthi emazingeni okushisa aphakeme, amaketanga e-polymer anamandla amaningi okushisa, okuholela ezingeni eliphakeme lokuhamba kanye nokuncipha kwe-viscosity.
5. I-electrolyte concentration: I-viscosity ye-CMC ithintwa ukuba khona kwama-electrolyte esixazululweni. Emazingeni aphezulu e-electrolyte, i-viscosity ye-CMC iyehla ngoba ama-ion asesisombululo angasebenzisana namaqembu e-carboxyl e-polymer futhi anciphise ukusebenzisana kwawo nama-molecule amanzi.

Sengiphetha, i-Sodium Carboxymethyl cellulose (CMC) iyi-polymer eguquguquka kakhulu ekhombisa izinhlobonhlobo zezakhiwo, kufaka phakathi ukunyibilika, i-viscosity, i-rheology, ukuqina, kanye nezakhiwo zokwakha amafilimu. I-viscosity ye-CMC ithonywa izici ezihlukahlukene, njengezinga lokushintsha, ukugxilisa ingqondo, i-pH, izinga lokushisa, nokugxila kwe-electrolyte. Ukuqonda lezi zici kubalulekile ekuthuthukiseni ukusebenza kwe-CMC ezinhlelweni ezihlukahlukene.