Nezve tembiricha yegel yehydroxypropyl methyl celluloseHPMC, vashandisi vazhinji havawanzo tarisa tembiricha yegel yehydroxypropyl methyl cellulose. Iye zvino hydroxypropyl methyl cellulose inowanzo zivikanwa zvichienderana nekusimba kwayo, asi kune dzimwe nzvimbo dzakasarudzika nemaindasitiri akakosha, hazvina kukwana kungoratidza kusimba kwechigadzirwa chete. Zvinotevera zvinotsanangura muchidimbu tembiricha yegel yehydroxypropyl methylcellulose.
Zviri mumapoka emethoxy zvine chekuita zvakananga nehuwandu hwedialysis ye cellulose, uye huwandu hwemapoka emethoxy hunogona kugadziriswa nekudzora fomura, tembiricha ye reaction uye nguva ye reaction. Panguva imwe chete, huwandu hwecarboxylation hunokanganisa huwandu hwekutsiva hydroxyethyl kana hydroxypropyl. Saka, kuchengetwa kwemvura kwe cellulose ethers nekupisa kwakanyanya kwegel kazhinji kwakaipa zvishoma. Maitiro aya ekugadzira anoda kuongororwa, saka hazvisi zvekuti huwandu hwe methoxy group hwakaderera, mutengo wekugadzira cellulose ether wakaderera, pane kudaro, mutengo wayo uchave wakakwira.
Tembiricha yegel inotemerwa neboka remethoxy, uye kuchengetwa kwemvura kunotemerwa neboka rehydroxypropoxy. Kune mapoka matatu chete anotsiva cellulose. Tsvaga tembiricha yako yakakodzera yekushandisa, kuchengetwa kwemvura kwakakodzera, wobva waona muenzaniso we cellulose iyi.
Kupisa kwegel chinhu chakakosha pakushandisaether ye celluloseKana tembiricha yemhepo yadarika tembiricha yegel, cellulose ether inoparadzana nemvura uye inorasikirwa nekuchengetwa kwemvura. Tembiricha yegel yecellulose ether iri pamusika inogona kusangana nezvinodiwa nenzvimbo inoshandiswa mortar (kunze kwenzvimbo dzakakosha). Vagadziri vanofanira kufunga nezveizvi.
Nguva yekutumira: Kubvumbi-26-2024