Vazhinji vashandisi havawanzo tarisa dambudziko rekupisa kwegel kwehydroxypropyl methylcellulose. Mazuva ano, hydroxypropyl methylcellulose inowanzo zivikanwa zvichienderana nekupenya, asi kune dzimwe nzvimbo dzakasarudzika uye maindasitiri akasarudzika, kupenya chete kwechigadzirwa ndiko kunoratidzwa. Hazvina kukwana, zvinotevera zvinotsanangura muchidimbu kupisa kwegel kwehydroxypropyl methylcellulose.
Hunhu hwe methyl acid hunoenderana zvakananga nehuwandu hwe cellulose ester hunogadzira ester, uye huwandu hwe methyl acid hunogadziriswa kuti hutonge kuumbwa, tembiricha ye reaction uye nguva ye reaction. Panguva imwe chete, huwandu hwe ether solution hunokanganisa huwandu hwe hydroxyethyl kana hydroxyapatite. Nokudaro, cellulose ethers patembiricha yakakwira ye gel haizonyorove zvakanyanya. Maitiro aya ekugadzira anofanira kunge ari echokwadi, saka pachinzvimbo chehuwandu hwakaderera hwe methoxides, cellulose ethers ichave yakakwira zvishoma pamutengo.
Tembiricha yejel yakaongororwa nemethoxide nehydroxyproazepam nehydroxyproxin. Mapoka matatu chete ndiwo anogona kutsiviwa necellulose. Tsvaga tembiricha yakakodzera, chengetedza hunyoro, uye sarudza patani yepulp. Tembiricha yejel ndiyo nzvimbo yakakosha pakushandisa cellulose ether. Kana tembiricha yemhepo yadarika tembiricha yejel, cellulose ether ichaburitswa mumvura. Tembiricha yepulp iri pamusika inonyanya kuzadzisa zvinodiwa nemushonga munzvimbo (kunze kwemamiriro chaiwo). Zvinotendwa kuti pakushandisa mushonga, hazvidikanwi kutarisisa zvakanyanya zviratidzo zvekushanda pakushandisa gel. Ehe, mugadziri we cellulose ether anofanira kufunga nezvechiratidzo ichi.
Nguva yekutumira: Kubvumbi-21-2023