▲Cellulose-ka Hydroxypropyl methyl (HPMC)waa budo cad oo aan ur lahayn, dhadhan lahayn, oo aan sun ahayn. Marka si buuxda loogu milmo biyaha, hydroxypropyl methyl cellulose waxay samayn doontaa colloid hufan oo fiiqan.
▲ Alaabta ceeriin ee ugu muhiimsan ee hydroxypropyl methyl cellulose (HPMC): cudbi la safeeyey, methyl chloride, propylene oxide, iyo walxo kale oo ceeriin ah, soodhaha caustic, aashitada, toluene, isopropanol, iwm.
Isbarbardhigga faa'iidooyinka iyo khasaarooyinka hydroxypropyl methyl cellulose:
1. hydroxypropyl methyl cellulose HPMC saafi ah waa mid dabacsan oo muuqaal ahaan leh cufnaan yar, oo leh miisaan dhan 0.3–0.4/ml.
HPMC-ga la qalday wuxuu leeyahay dareere aad u wanaagsan wuxuuna dareemayaa culeys, taasoo si weyn uga duwan badeecada dhabta ah muuqaalka.
2. Xalka biyaha ee saafiga ah ee hydroxypropyl methyl cellulose HPMC waa mid cad, gudbin iftiin sare leh, heerka haynta biyaha > 97%.
Xalka biyaha ee la wasakheeyay ee HPMC waa mid wasakh ah, heerka haynta biyuhuna way adag tahay in la gaaro 80%.
3. HPMC saafi ah waa inaysan urin ammonia, istaarijka iyo alkoholka.
HPMC-ga la qalday badanaa wuxuu urin karaa nooc kasta oo dhadhan ah, xitaa haddii uusan dhadhan lahayn, wuxuu dareemi doonaa culeys.
4. Budada HPMC ee saafiga ah ee hydroxypropyl methyl cellulose waa mid fiiqan oo ku jirta mikroskoob ama muraayad weyneysa.
HPMC-ga la qalday waxaa lagu arki karaa sida adag ama kiristaalo yar yar oo lagu dhejiyo mikroskoob ama muraayad weyneysa.
Dhinacyo noocee ah ayaa lagu aqoonsan karaa faa'iidooyinka iyo khasaarooyinka hydroxypropyl methyl cellulose?
1. shahaadada cad
In kasta oo cadaanku aanu go'aamin karin in HPMC ay fududahay in la isticmaalo iyo in kale, haddii walxaha cadaynta lagu daro inta lagu jiro habka wax soo saarka, haddana waxay saamayn doontaa tayadiisa. Si kastaba ha ahaatee, inta badan alaabada wanaagsan waxay leeyihiin cadaan wanaagsan.
2. Fiicnaan
Hab-dhiska HPMC guud ahaan wuxuu leeyahay 80 mesh iyo 100 mesh, inta uu ka fiican yahay, guud ahaan, wuu ka fiican yahay.
3. Gudbinta
Dhigcellulose hydroxypropyl methyl (HPMC)biyaha geli si aad u sameyso colloid hufan, oo aad u hubiso gudbinta iftiinka. Inta uu le'eg yahay gudbinta iftiinka, way ka sii fiican tahay, taasoo muujinaysa in ay yar yihiin walxaha aan milmi karin ee ku jira. Gudbinta falgalayaasha toosan guud ahaan way fiican tahay, halka falgalayaasha toosan ay ka sii daran tahay.
4. Saamiga
Cufisjiidadka gaarka ah ayaa sii weyn, ayaa ka sii culus. Gaar ahaanshuhu waa weyn yahay, guud ahaan sababtoo ah waxa ku jira kooxda hydroxypropyl ee ku jirta ayaa sarreeya, waxa ku jira kooxda hydroxypropyl-na waa sarreeyaa, haysashada biyuhu way ka fiican tahay.
Waqtiga boostada: Abriil-25-2024