Izinto Ezithonya Ukuziphatha Kwe-Carboxymethyl Cellulose (CMC) Solutions

I-Carboxymethyl cellulose (CMC) iyi-polymer encibilika emanzini etholakala ku-cellulose enohlu olubanzi lwezinhlelo zokusebenza ezimbonini ezahlukahlukene, okubandakanya ukudla, ezemithi, izimonyo nephepha. Ukuziphatha kwezixazululo ze-CMC kungathonywa izinto ezimbalwa, okuhlanganisa ukugxilisa ingqondo, isisindo samangqamuzana, izinga lokushintshwa, i-pH, izinga lokushisa, nezimo zokuxutshwa. Ukuqonda lezi zici kubalulekile ekuthuthukiseni ukusebenza kwe-CMC ezinhlelweni ezihlukahlukene. Kulesi sihloko, sizoxoxa ngezinto ezibalulekile ezithonya ukuziphatha kwezixazululo ze-CMC.

Ukugxila

Ukugxila kwe-CMC kusixazululo kungathinta kakhulu ukuziphatha kwayo. Njengoba ukugxila kwe-CMC kukhula, i-viscosity yesisombululo nayo iyanda, iyenze ibe ne-viscous futhi igeleze kancane. Lesi sakhiwo senza izixazululo ze-CMC zokugxila okuphezulu zilungele izinhlelo zokusebenza ezidinga umphumela wokujiya noma we-gelling, njengokudla nezimonyo.

Isisindo samangqamuzana

Isisindo samangqamuzana e-CMC singesinye isici esibalulekile esingathinta ukuziphatha kwayo. Isisindo samangqamuzana aphezulu i-CMC ijwayele ukuba nezakhiwo ezingcono zokwenza ifilimu futhi iphumelela kakhulu ekuthuthukiseni izakhiwo ze-rheological zesisombululo. Iphinde inikeze amandla okugcina amanzi angcono futhi ithuthukise izici ezibophayo zesisombululo. Kodwa-ke, i-CMC enesisindo esiphezulu se-molecular ingase ibe nzima ukuyincibilikisa, iyenze ingafaneleki kwezinye izinhlelo zokusebenza.

Izinga Lokushintsha

I-degree of substitution (DS) ye-CMC isho izinga le-carboxymethylation yomgogodla we-cellulose. Kungaba nomthelela omkhulu ekuziphatheni kwezixazululo ze-CMC. I-DS ephezulu iphumela ekuncibilikeni okuphezulu kanye namandla angcono okugcina amanzi esixazululo, okuyenza ifaneleke kakhulu izinhlelo zokusebenza ezidinga umthamo omkhulu wokubamba amanzi, njengokudla nemithi. Nokho, i-DS CMC ephezulu ingase futhi ibangele i-viscosity eyengeziwe, engakhawulela ukusetshenziswa kwayo ezinqubweni ezithile.

pH

I-pH yesisombululo se-CMC nayo ingathinta ukuziphatha kwayo. I-CMC ivamise ukuzinza ku-pH engathathi hlangothi ukuya kwe-alkaline, futhi i-viscosity yesisombululo iphakeme kakhulu ku-pH engu-7-10. Nge-pH ephansi, ukuncibilika kwe-CMC kuncipha, futhi i-viscosity yesisombululo nayo iyancipha. Ukuziphatha kwezixazululo ze-CMC nakho kuyazwela ezinguqukweni ze-pH, ezingathinta ukuncibilika, i-viscosity, kanye nezakhiwo ze-gelation zesixazululo.

Izinga lokushisa

Izinga lokushisa lesisombululo se-CMC lingaphinda libe nomthelela ekuziphatheni kwaso. I-solubility ye-CMC ikhuphuka ngezinga lokushisa, futhi amazinga okushisa aphezulu angabangela i-viscosity ephezulu kanye namandla angcono okugcina amanzi. Kodwa-ke, amazinga okushisa aphezulu angabangela nesisombululo sejeli, okwenza kube nzima ukusebenza. Izinga lokushisa le-gelation ye-CMC lincike ezintweni ezimbalwa, okuhlanganisa ukugxila, isisindo samangqamuzana, kanye nezinga lokushintshwa.

Izimo Zokuxuba

Izimo zokuxutshwa kwesixazululo se-CMC nazo zingathinta ukuziphatha kwayo. Ijubane, ubude besikhathi, kanye nezinga lokushisa lokuxutshwa kungathonya ukuncibilika, i-viscosity, kanye nezakhiwo ze-gelation zesisombululo. Izivinini eziphakeme zokuhlanganisa namazinga okushisa angabangela i-viscosity ephezulu namandla okugcina amanzi angcono, kuyilapho ubude besikhathi sokuxuba bungabangela ukuhlakazeka okungcono kanye nokufana kwesixazululo. Kodwa-ke, ukuxuba ngokweqile kungabangela isisombululo se-gel, okwenza kube nzima ukusebenza.

Isiphetho

Ukuziphatha kwezixazululo ze-CMC kuthonywa izici ezimbalwa, okuhlanganisa ukugxilisa ingqondo, isisindo samangqamuzana, izinga lokushintshwa, i-pH, izinga lokushisa, nezimo zokuxutshwa. Ukuqonda lezi zici kubalulekile ekuthuthukiseni ukusebenza kwe-CMC ezinhlelweni ezihlukahlukene. Ngokulawula lezi zici, kungenzeka ukulungisa ukuziphatha kwezixazululo ze-CMC ukuze kuhlangatshezwane nezidingo ezithile zezinhlelo zokusebenza ezihlukene, njengokujiya, ukugawula, ukubopha, noma ukugcinwa kwamanzi.