Umphumela wokuqina weI-Cellulose EtherKuya ngokuthi: Izinga le-polymerization ye-cellulose ether, ukugxila kwesixazululo, izinga lokushisa, 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. Okokuvunywa okuphansi kwe-MC ne-HPMC, i-10% -1115% Solution ingalungiswa, i-medium viveluation MC ne-HPMC ingalungiswa isixazululo esingu-5% -10%, futhi i-HPMC ilungiselela kuphela isixazululo esingu-2% -3%, futhi imvamisa Ukuhlukaniswa kwe-viscosity ye-cellulose ether nakho kufakwa ngesisombululo esingu-1% -2%.
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 yeI-Cellulose Ether, okungcono ukugcinwa kwamanzi, kepha kukhuphuka kakhulu isisindo se-viscosity, kukhuphuka isisindo se-molecular ether ye-cellulose, kanye nokuncipha okuhambisanayo kwe-solubility yayo, okunomthelela ongemuhle ekusebenzeni kokuhlushwa kodaka nasekwakhekeni. 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: APR-28-2024