Mokhoa oa ho bapisa cellulose ether Hydroxypropyl Methyl Cellulose HPMC ka viscosity?

Ho bapisa Hydroxypropyl Methyl Cellulose (HPMC) ka viscosity ho kenyelletsa ho khetha sehlahisoa se nang le boemo ba viscosity se lumellanang le thepa e lakatsehang le litšobotsi tsa ts'ebetso bakeng sa ts'ebeliso e itseng. Viscosity ke paramethara ea bohlokoa e susumetsang phallo, ts'ebetso, le lisebelisoa tse ling tsa rheological tsa tharollo kapa li-dispersions tsa HPMC. Mona ke tataiso ea mohato ka mohato mabapi le mokhoa oa ho bapisa cellulose ether HPMC ka viscosity:

1. Hlalosa Litlhoko tsa Kopo:

Hlalosa litlhoko tse khethehileng tsa kopo ea hau. Nahana ka lintlha tse kang:

• Mosebetsi o lakatsehang le boiketlo ba tšebeliso.
• Thepa ea ramatiki e hlokahalang bakeng sa ts'ebeliso (mohlala, botenya, ho boloka metsi, joalo-joalo).
• Litlhaloso tsa ho khomarela, sebopeho sa filimi, kapa litšobotsi tse ling tsa ts'ebetso.

2. Utloisisa Kereiti ea Viscosity:

HPMC e fumaneha ka limaraka tse fapaneng tsa viscosity, hangata e lekantsoeng ka centipoise (cP) kapa mPa·s. Limaraka tse fapaneng li fana ka maemo a fapaneng a viscosity, 'me hangata baetsi ba tsona ba li arola ka mekhahlelo (mohlala, viscosity e tlase, viscosity e mahareng, viscosity e phahameng). Sehlopha se seng le se seng sa viscosity se na le lits'ebetso tse ikhethileng moo se sebetsang hantle.

3. Sheba Lintlha tsa Tekheniki tsa Moetsi:

Sheba maqephe a data a tekheniki a fanoeng ke baetsi ba HPMC. Litokomane tsena hangata li kenyelletsa lintlha tse mabapi le mefuta ea viscosity bakeng sa kereiti e 'ngoe le e' ngoe, hammoho le thepa e 'ngoe e amehang joalo ka degree of substitution, particle size, le solubility. Hangata bahlahisi ba khothaletsa limaraka tse ikhethileng bakeng sa lits'ebetso tse itseng.

4. Kopanya Viscosity ho Tšebeliso:

Khetha kereiti ea HPMC e nang le boemo ba viscosity e lumellanang le litlhoko tsa kopo ea hau. Ka mohlala:

• Bakeng sa lits'ebetso tse hlokang viscosity e tlase le ts'ebetso e ntlafalitsoeng (mohlala, ho lipola), nahana ka limaraka tsa HPMC tsa "viscosity" tse tlase.
• Bakeng sa lits'ebetso tse hlokang viscosity e phahameng le ho boloka metsi (mohlala, likhomaretsi tsa lithaele), khetha limaraka tsa HPMC tse nang le viscosity e phahameng.

5. Nahana ka Tlhahiso le litekanyetso:

Ela hloko tlhahiso ea sehlahisoa sa hau le litekanyetso tsa HPMC. The viscosity e hlokahalang hangata e ka finyelloa ka ho fetola litekanyetso tsa HPMC ha ho etsoa. Ho bohlokoa ho lula ka har'a mefuta e khothalletsoang ea litekanyetso e fanoeng ke moetsi ho netefatsa ts'ebetso e nepahetseng.

6. Etsa Liteko tsa Lab:

Pele ho tlhahiso e kholo, etsa liteko tsa laboratoring u sebelisa limaraka tse fapaneng tsa viscosity tsa HPMC ho lekola ts'ebetso ea bona sebopehong sa hau se ikhethileng. Mohato ona o u fa monyetla oa ho bona hore na kereiti ka 'ngoe e ama thepa e kang ho sebetsa, ho khomarela, le litlhoko tse ling tse ikhethileng tsa ts'ebeliso.

7. Ikopanye le Tšehetso ea Theknoloji:

Haeba u na le litlhoko tse tobileng kapa tse rarahaneng tsa kopo, nahana ka ho buisana le sehlopha sa tšehetso ea tekheniki sa moetsi oa HPMC. Ba ka fana ka tataiso mabapi le ho khetha kereiti ea viscosity e nepahetseng ho latela litlhoko tsa hau mme ba ka fana ka leseli le eketsehileng mabapi le litokiso tsa moralo.

8. Nahana ka Matlotlo a Tlatsetso:

Leha viscosity e le paramethara ea bohlokoa, nahana ka lisebelisoa tse ling tsa HPMC tse ka amang ts'ebetso ts'ebelisong ea hau. Sena se ka kenyelletsa lintlha tse kang mocheso oa gelation, boholo ba likaroloana, le ho lumellana le metsoako e meng mofuteng oa hau.

9. Tiisetso ea Boleng:

Khetha HPMC ho bahlahisi ba tsebahalang ba nang le rekoto ea ho hlahisa li-cellulose ethers tsa boleng bo holimo. Nahana ka lintlha tse kang ho tsitsa, ho hloeka, le ho khomarela litekanyetso tsa indasteri.

Qetello:

Ho tsamaellanacellulose ether HPMCka viscosity e kenyelletsa motsoako oa ho utloisisa litlhoko tsa kopo, ho shebana le data ea tekheniki, ho etsa liteko tsa lab, le ho nahana ka botsebi ba moetsi. Ho shebisisa lintlha tsena ka hloko ho tla u thusa ho khetha mophato o nepahetseng ka ho fetesisa oa HPMC ho fihlela litlhoko tse ikhethang tsa kopo ea hau.