Inogona HPMC uye CMC kusanganisa
Methyl cellulose yakachena kana chena sefibrous kana granular powder;Haina hwema, isinganakidze.Ichi chigadzirwa mumvura kuzvimba mune yakajeka kana zvishoma turbid colloidal mhinduro;Insoluble mu absolute ethanol, chloroform kana diethyl ether.Inokurumidza kuparadzirwa uye kuzvimba mumvura inopisa pa80-90 ℃, uye inokurumidza kunyungudika mushure mekutonhora.Iyo aqueous solution yakanyatsogadzikana pakupisa kwekamuri, uye inogona gel pakupisa kwepamusoro, uye gel inogona kuchinja nemhinduro nekushisa.
Iyo ine yakanakisa kunyorova, kupararira, kunamatira, kukora, emulsification, kuchengetedza mvura uye kugadzira firimu, pamwe nekusapinda kwemafuta.Iyo firimu ine yakanakisa kuoma, kuchinjika uye pachena.Nemhaka yokuti isiri-ionic, inogona kuwirirana nemamwe emulsifiers, asi iri nyore kuisa munyu kunze, uye mhinduro yacho yakagadzikana muhuwandu hwePH2 - 12. Sodium carboxymethyl cellulose Ichi chigadzirwa ndicho sodium munyu we cellulose carboxymethyl ether, ndeyeanionic cellulose ether, ichena kana mukaka chena fibrous poda kana chidimbu, density 0.5-0.7 g/cubic centimita, inenge isinganhuhwi, isinganakidze, hygroscopic.Zviri nyore kuparadzira mumvura mune yakajeka gelatinous mhinduro, isingagadzirike mu ethanol uye mamwe organic solvents.
Kana iyo pH yemushonga wemvura iri 6.5 - 8.5, viscosity ye slurry inoderera zvakanyanya kana pH iri> 10 kana <5, uye kushanda kwakanakisisa kana pH iri 7. Nokuda kwekugadzikana kwekushisa, viscosity inokwira nokukurumidza pasi. 20 ℃, inoshanduka zvishoma nezvishoma pa45 ℃, uye colloid denaturation uye viscosity uye zvivakwa zvinodzikira zvakanyanya kana kudziirwa kwenguva yakareba pamusoro pe80 ℃.Zviri nyore soluble mumvura, transparent solution;Iyo yakanyanya kugadzikana mune alkaline mhinduro, uye iri nyore kuita hydrolyze mune iyo asidhi.Kana iyo pH kukosha iri 2-3, kunaya kuchaitika, uye kunaya kunozoitikawo kana iri multivalent metal salts.Hydroxypropyl methyl cellulose, inozivikanwawo se hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether, ndiko kusarudzwa kwekotoni cellulose yakanyanya kuchena seyakagadzirwa, pasi pemamiriro ealkaline nekukosha etherification uye kugadzirira.
Inonyungudika mumvura uye yakawanda polar C uye chikamu chakakodzera che ethanol / mvura, propanol / mvura, dichloroethane, nezvimwewo, isinganyunguriki mu diethyl ether, acetone, absolute ethanol, kuzvimba mumvura inotonhora kuva yakajeka kana zvishoma turbidized colloidal solution.Mushonga wemvura une basa repamusoro, kujeka kwepamusoro uye kushanda kwakagadzikana.HPMC ine pfuma yejeri rinopisa.Mushure mekupisa, chigadzirwa chine aqueous solution inoumba gel precipitation, uye inonyunguduka mushure mekutonhora.Iyo tembiricha yegel yezvakasiyana zvakasiyana zvakasiyana.
Nguva yekutumira: Sep-09-2022