Nezve tembiricha yegel yehydroxypropyl methyl celluloseHPMC, vashandisi vazhinji havawanzo teerera kune tembiricha yegel yehydroxypropyl methyl cellulose. Iye zvino hydroxypropyl methyl cellulose inowanzosiyaniswa maererano ne viscosity yayo, asi kune dzimwe nzvimbo dzakakosha uye maindasitiri akakosha, hazvina kukwana kungoratidzira viscosity yechigadzirwa. Izvi zvinotevera zvinounza muchidimbu tembiricha yegel yehydroxypropyl methylcellulose.
Zviri mukati memethoxy mapoka zvakanangana nechiyero che dialysis ye cellulose, uye zviri mukati methoxy mapoka zvinogona kugadziridzwa nekudzora fomula, kuita tembiricha uye nguva yekuita. Panguva imwecheteyo, dhigirii yecarboxylation inokanganisa dhigirii yekutsiviwa kwehydroxyethyl kana hydroxypropyl. Naizvozvo, kuchengetwa kwemvura kwe cellulose ethers ine tembiricha yegel yakakwira kunowanzo kuderera. Iyi nzira yekugadzira inoda kuongororwa, saka hazvisi izvo zvinyorwa zvemethoxy boka zvakaderera, mari yekugadzirwa kwe cellulose ether yakaderera, pane zvinopesana, mutengo wayo uchava wakakwirira.
Iyo tembiricha yegel inotarwa neboka remethoxy, uye kuchengetwa kwemvura kunotsanangurwa neboka rehydroxypropoxy. Pane mapoka matatu chete anotsiviwa pa cellulose. Tsvaga tembiricha yako yekushandisa yakakodzera, kuchengetwa kwemvura kwakakodzera, uye wobva waona modhi yeiyi cellulose.
Iyo tembiricha yegel chinhu chakakosha pakushandiswa kwecellulose ether. Kana tembiricha yepakati ikapfuura tembiricha yegel, cellulose ether inoparadzana kubva mumvura uye kurasikirwa nekuchengetedza mvura. Iyo tembiricha yegel ye cellulose ether pamusika inogona kuzadzisa zvinodiwa nenharaunda umo dhaka rinoshandiswa (kunze kwenzvimbo dzakakosha). Vagadziri vanofanira kufunga izvi.
Nguva yekutumira: Kubvumbi-26-2024