IHydroxypropyl methylcellulose (HPMC) iyimpahla ebalulekile enezinhlobonhlobo zezicelo embonini yezemithi kanye nezinye izimboni ezifana nokudla, izimonyo nezokwakha.Isidingo se-HPMC besilokhu sikhula kancane eminyakeni edlule ngenxa yezakhiwo zayo ezihlukile njengokujiya, ukubopha, ukwenza ifilimu nokugcinwa kwamanzi.Kulesi sihloko, sizoxoxa ngendlela yokukhiqiza i-alkaline leaching ye-hydroxypropyl methylcellulose (HPMC).
Indlela yokukhiqiza i-alkali leaching ye-hydroxypropyl methylcellulose (HPMC) iyinqubo lapho i-cellulose isabela nge-propylene oxide ne-methyl chloride lapho kukhona i-alkali.Inqubo yenzeka ngaphansi kwezinga lokushisa, ingcindezi kanye nezimo ezilawulwa isikhathi ukukhiqiza imikhiqizo yekhwalithi ephezulu ye-HPMC.
Isinyathelo sokuqala sokukhiqiza i-HPMC kusetshenziswa indlela yokukhiqiza i-alkaline leaching ukulungiswa kwe-cellulose eluhlaza.I-Cellulose ihlanzwa kuqala ngokukhipha noma yikuphi ukungcola bese iguqulwa ibe yi-alkali cellulose ngokwelashwa nge-alkali efana ne-sodium hydroxide.Lesi sinyathelo sibalulekile ngoba sandisa ukusebenza kabusha kwe-cellulose ngama-reagents asetshenziswa ezinyathelweni ezilandelayo.
I-alkali cellulose iphathwa ngengxube ye-propylene oxide ne-methyl chloride ngaphansi kwezinga lokushisa elilawulwayo nokucindezela.Ukusabela phakathi kwe-alkali cellulose kanye ne-reagent kuholela ekwakhekeni komkhiqizo, okuyingxube ye-hydroxypropyl methylcellulose kanye neminye imikhiqizo.
Ingxube iyagezwa, ingathathi hlangothi futhi ihlungwe ukuze kukhishwe ukungcola okufana nama-reagents angaphenduliwe kanye nemikhiqizo.Isixazululo esiwumphumela sibe sesigxiliswa ukuhwamuka ukuze kutholwe umkhiqizo ohlanzekile we-HPMC.
Indlela yokukhiqiza i-alkali leaching ye-hydroxypropyl methylcellulose (HPMC) inezinzuzo eziningi uma iqhathaniswa nezinye izindlela zokukhiqiza ezifana ne-etherification.Enye yezinzuzo ukuthi kuyinqubo evumelana nemvelo.Ngokungafani nezinye izinqubo, indlela yokukhiqiza i-alkali leaching ayisebenzisi izinyibilikisi ezine-halogenated eziyingozi emvelweni nempilo yomuntu.
Enye inzuzo yale ndlela ukukhiqizwa kwemikhiqizo ehlanzekile ye-HPMC.Izimo zokusabela ezilawulwayo ziqinisekisa ukuthi umkhiqizo wokugcina uyikhwalithi engaguquki futhi ulungele ukusetshenziswa okuhlukahlukene.
Ukusetshenziswa kwe-HPMC embonini yezemithi kubalulekile ekukhiqizeni amaphilisi, amaphilisi kanye namanye amafomu omthamo.I-HPMC ingasetshenziswa njengesihlanganisi, i-disintegrant, i-ejenti yokunameka, njll. Ukusetshenziswa kwe-HPMC kulezi zinhlelo zokusebenza kuqinisekisa ukuthi ifomu lomthamo ngelekhwalithi ephezulu futhi lihlangabezana nezindinganiso ezidingekayo.
I-HPMC iphinde isetshenziswe njenge-thickener, emulsifier kanye ne-stabilizer embonini yokudla.Ukusetshenziswa kwe-HPMC emikhiqizweni yokudla kuqinisekisa ukuthungwa okungaguquki, i-viscosity kanye nekhwalithi.
Embonini yezokwakha, i-HPMC isetshenziswa njengesithako sikasimende ukuthuthukisa ukusebenza, ukugcinwa kwamanzi kanye nezakhiwo zokuhlanganisa zikasimende.Ukusetshenziswa kwe-HPMC kuqinisekisa ukuthi imikhiqizo yokwakha isezingeni eliphezulu futhi ihlangabezana namazinga adingekayo.
Kafushane, indlela yokukhiqiza i-alkali leaching ye-hydroxypropyl methylcellulose (HPMC) iyinqubo yokukhiqiza imikhiqizo yekhwalithi ephezulu ye-HPMC futhi isetshenziswa kabanzi ezimbonini ezahlukahlukene ezifana nezamakhemisi, ukudla, nezokwakha.Ukusetshenziswa kwe-HPMC kulezi zinhlelo zokusebenza kuqinisekisa ukuthi umkhiqizo usezingeni eliphezulu futhi uhlangabezana namazinga adingekayo.Le ndlela yokukhiqiza ibuye ihambisane nemvelo futhi ikhiqiza umkhiqizo ohlanzekile we-HPMC.
Isikhathi sokuthumela: Sep-15-2023