Viscosity High-viscosity hydroxypropyl methylcellulose kuma soo saari karo cellulose aad u sarreeya oo keliya iyada oo faaruqinta iyo beddelka nitrogen ee wax soo saarka.Guud ahaan, wax-soo-saarka cellulose-ka-jilicsan ee Shiinaha lama xakamayn karo.Si kastaba ha ahaatee, haddii qalabka cabbiraadda ogsijiinta lagu rakibi karo kiliga, wax-soo-saarka viscosity-kiisa si macmal ah ayaa loo xakameyn karaa.Intaa waxaa dheer, iyadoo la tixgelinayo xawaaraha beddelka ee nitrogen, way sahlan tahay in la soo saaro alaabooyin badan oo viscosity ah iyada oo aan loo eegin sida hawo-mareenka nidaamka.Dabcan, heerka polymerization ee suufka la safeeyey ayaa sidoo kale muhiim ah.Haddii taasi shaqayn waydo, ka dibna ku samee ururka hydrophobic.Dalka Shiinaha waxaa ka jira wakiilo ururo.Nooca wakiilka ururka ee la dooranayo ayaa saameyn weyn ku leh waxqabadka badeecada ugu dambeysa.
Gudbinta iftiinka hydroxypropyl methylcellulose waxaa inta badan saameeya qodobada soo socda:
1. Tayada alaabta ceeriin.
2. Saamaynta alkalization.
3. Saamiga habka.
4. Saamiga dareerayaasha.
5. Saamaynta dhexdhexaadinta.
Ogsajiinta hadhaaga ah ee ku jirta kuleyliyaha waxay sababi doontaa hoos u dhaca unugyada unugyada iyo dhimista miisaanka kelli, laakiin oksijiinta hadhaaga ah ayaa xaddidan, haddii kaliya lagu xiro molecules dhaawacan, taasoo ka dhigaysa mid aad u sarreeya.Si kastaba ha ahaatee, heerka biyaha saturated ayaa sidoo kale leh xiriir xooggan oo la leh heerka hydroxyproline.Warshadaha qaarkood waxay rabaan oo kaliya inay dhimaan qiimaha iyo qiimaha, mana rabaan inay kordhiyaan nuxurka hydroxyproline si tayada aysan uga badneyn heerka alaabada dibedda laga soo saaro.Heerka ilaalinta ee badeecada waxay la xiriirtaa phenol biyaha, laakiin guud ahaan, habka falcelinta ayaa sidoo kale go'aamisa heerka ilaalinta, saamiga alkali, chloride methyl iyo propylene oxide, xoojinta alkali iyo saamiga biyaha iyo suufka ayaa go'aamiya waxqabadkeeda. .
Waqtiga boostada: Abriil-23-2023