Umphumela wokuqina we-cellulose ether kuya ngokuthi: izinga le-polymerization ye-cellulose ether, ukugxila kwesixazululo, izinga lokushisa kanye nezinye izimo. Impahla ecebile yesisombululo ihlukile ku-ALKYL Cellulose kanye nama-derivatives alo aguquliwe. Izakhiwo ze-gelation zihlobene nezinga lokufaka esikhundleni, ukugxilisa izixazululo kanye nezithasiselo. Nge-Hydroxyalkyl Decivatives eguquliwe, izakhiwo ze-gel nazo zihlobene neziqu zokuguqulwa kwe-hydroxyalkyl. Ukuze uthole ukubonakala okuphansi kwe-MC ne-HPMC, isixazululo esingu-10% -15% singalungiswa, i-Medium Viscusity MC ne-HPMC singalungiswa isisombululo esingu-5% -10%, futhi kwesinye isikhathi ukuhlukaniswa kwesisombululo se-cellulose ethethekile.
I-ether ephakeme ye-cellulose ye-molecular-molecular-molecular-cellulose isebenza kahle kakhulu, kanye nama-polymers anezinsimbi ezihlukile zamangqamuzana ane-viscosities ehlukile kusixazululo esifanayo sokuhlushwa. I-Viscosity Target ingatholakala kuphela ngokungeza inani elikhulu le-molecular isisindo se-cellulose ether. I-viscocity yayo inokuncika okuncane kwezinga le-shear, futhi i-viscosity ephezulu ifinyelela ekuboniseni okuqondiwe, idinga ukwengezwa okuncane, futhi i-viscosity incike ekusebenzeni kahle. Ngakho-ke, ukufeza ukungaguquguquki okuthile, inani elithile le-cellulose ether (ukugxila kwesixazululo) nesixazululo kufanele kuqinisekiswe. Izinga lokushisa le-gel lesixazululo libuye linciphise ngokuqondile ngokwanda kokuqoqwa kwesixazululo, nama-gel ama-gels ekushiseni kwekamelo ngemuva kokufinyelela kokuhlushwa okuthile. Ukuhlushwa kwama-gelling kwe-HPMC kuphakeme kakhulu emazingeni okushisa asekamelweni.
Ukuguquguquka kungashintshwa futhi ngokukhetha usayizi wezinhlayiyana nokukhetha izithambiso ze-cellulose ezinamazinga ahlukene wokuguqulwa. Ukubizwa okubizwa ngokuthi ukuguqulwa kwethula izinga elithile lokufaka esikhundleni samaqembu ama-hydroxyalkyl ngesakhiwo se-Skeleton se-MC. Ngokushintsha amanani wokufakwa esikhundleni salezi zinto ezimbili, okungukuthi, ama-DS kanye nama-MS ahlobene namagugu amaqembu e-methoxy ne-hydroxyalkyly esivame ukusho. Izidingo ezihlukene zokusebenza kwe-cellulose ether zingatholakala ngokushintsha amanani wokufakwa esikhundleni salezi zinto ezimbili.
Isixazululo esiphakeme se-cellule Izisombululo zamanzi ezinamanzi ze-MC POLYMERS zivame ukuba ne-pseudoplastic ne-non-twixotropic ephansi ngaphansi kwezinga lokushisa le-gel, kodwa izakhiwo ze-Newtonia ezigeleza ngamanani aphansi. I-Pseudoplaltity inyuka ngesisindo se-molecular noma ukugxila kwe-cellulose ether, kungakhathalekile ukuthi uhlobo lokungena esikhundleni kanye nesilinganiso sokufaka esikhundleni. Ngakho-ke, i-cellulose i-Teshers yebanga elifanayo lokubonana, noma ngabe i-MC, i-HPMC, i-hemc, izohlala ikhombisa izakhiwo ezifanayo zembongo inqobo nje uma ukugxila nokushisa kugcinwa njalo. Ama-Gels ahlelekile akhiwa lapho izinga lokushisa liphakama, futhi ukuhamba kakhulu kwe-thixotropic kwenzeka. Ukuhlushwa okuphezulu nokuvulekezwa okuphansi kuselula Le mpahla inzuzo enkulu kulungiswa kokulinganisa nokugcoba ekwakhiweni kokwakhiwa kodaka.
Kudinga ukuchazwa lapha ukuthi ukukhuphuka kwendlela kaCellulose Ether, kungcono ukugcinwa kwamanzi, kepha kukhuphuka isisindo esilinganiselwe se-moleculaty, kanye nokwehla okuhambisanayo kokusebenza kwayo kokuhlaselwa kwayo nokwakha. Lapho kukhuphuka khona i-viscosity, kusobala kakhulu umphumela wokuqina kudaka, kepha alufani ngokuphelele. Ukubonakaliswa okuphakathi nendawo okuphansi, kepha i-ether eguqulwe ngokuguqulwa inokusebenza okungcono ekuthuthukiseni amandla wesakhiwo sodaka lwamanzi. Ngokwanda kwe-viscosity, ukugcinwa kwamanzi kwe-cellulose ether kuyathuthuka.
Isikhathi sePosi: Meyi-30-2023