Ake sixoxe nge-hydroxypropyl methyl celluloseI-HPMCnokuthi ungalinganisa kanjani i-viscosity yayo. I-viscosity lapha ibhekisela ku-viscosity ebonakalayo, okuwukubhekisela okubalulekile ku-hydroxypropyl methyl cellulose.
Okujwayelekile. Izindlela ezijwayelekile zokulinganisa ukulinganisa i-viscosity ejikelezayo, ukulinganisa i-viscosity ye-capillary kanye nokulinganisa i-viscosity yokuwa. Indlela yokunquma i-hydroxypropyl methyl cellulose kwakuyi-capillary adhesion.
Indlela yokunquma izinga, kusetshenziswa i-Uchs viscometer. Ngokuvamile ukunqunywa kwesisombululo kuyisisombululo samanzi esingu-2%, ifomula ithi: V=Kdt. V iyi-viscosity ku-mpa. s kanti u-K uyi-viscometer constant.
U-D uwubuningi ekushiseni okungaguquki kanti u-T uwubude besikhathi kusukela phezulu kuya phansi nge-viscometer ngemizuzwana. Le ndlela yokusebenza inzima kakhulu, uma kukhona izinto ezinganyibiliki.
Amagama kulula ukuwadala amaphutha, kunzima ukubona ikhwalithi ye-hydroxypropyl methyl cellulose. Manje isetshenziswa kakhulu ukukala i-viscometer ejikelezayo, okuwukusetshenziswa okuvamile eShayina.
Ifomula ye-viscometer ye-NDJ-1 ithi η=Kα. η iyi-viscosity, futhi ku-mpa. s, u-K uyi-coefficient ye-viscometer, kanti u-α uwukufundwa kwesikhombisi se-viscometer.
Indlela yokuhlola i-Hydroxypropyl methyl cellulose 2% viscosity:
1, le ndlela ifanele ukunqunywa kwe-dynamic viscosity yama-non-Newtonian fluids (isixazululo se-polymer, i-suspension, i-emulsion dispersion liquid noma isixazululo se-surfactant, njll.).
2. Izinsimbi kanye nezinto zikagesi
2.1 I-viscometer ejikelezayo (i-NdJ-1 kanye ne-NDJ-4 ziyadingeka yi-Chinese Pharmacopoeia)
2.2 Ukushisa okuhlala njalo kwamanzi okugeza ukunemba kokushisa okuhlala njalo 0.10C
2.3 Izinga lokulinganisa izinga lokushisa lingu-0.20C, okuqinisekiswa njalo.
2.4 Ama-Viscometer asebenzisa izindlela zokuzinzisa imvamisa (njenge-NDJ-1 kanye ne-NDJ-4) kufanele agcinwe. Ukunemba okungu-1%.
8. Isampula ye-og ilinganiswe kahle yafakwa ebhodleleni elomile nelithambile elingama-400mL ubude. Engeza cishe ama-100mL wamanzi ashisayo angama-80-90 degrees bese uvuselela imizuzu eyi-10 ukuze ihlukaniswe.
Hlakaza ngokulinganayo, uvuselele bese ufaka amanzi abandayo ku-400mL iyonke. Okwamanje, vuselela njalo imizuzu engama-30 ukuze wenze isisombululo esingu-2% (W/W), bese usifaka esiqandisini ukuze ubhavu weqhwa uphole kuze kube yilapho ubumba iqhwa elincane phezu kwamanzi.
Khipha bese ufaka ethangini lokushisa elingaguquki ukuze ugcine izinga lokushisa eliphakathi lifinyelela ku-20 ℃ 0.1 ℃.
3.1 Ukufakwa nokusebenza kwethuluzi kufanele kwenziwe ngokuhambisana nemiyalelo yokusebenza kwethuluzi, futhi i-rotor kanye ne-rotor efanele kufanele kukhethwe ngokuya ngebanga le-viscosity lomkhiqizo ovivinyiwe kanye nezinhlinzeko ze-pharmacopoeia ngaphansi kombhalo womkhiqizo.
Isivinini sokujikeleza.
3.2 Lungisa izinga lokushisa lamanzi elingaguquki ngokwesilinganiso esingaphansi kwento ngayinye yomuthi.
3.3 Umkhiqizo wokuhlola wafakwa esitsheni esichazwe yithuluzi, kwathi i-Angle (a) yokuphambuka yalinganiswa ngokomthetho ngemva kwemizuzu engama-30 yokushisa okungaguquki. Cima imoto bese uyiqala kabusha ukuze kutholakale ukuthi ikhona yini futhi.
Umehluko phakathi kwamanani aphakathi akufanele udlule u-3%, ngaphandle kwalokho kufanele kwenziwe isilinganiso sesithathu.
3.4 Bala inani eliphakathi lezivivinyo ezimbili ngokwefomula ukuze uthole i-dynamic viscosity yomkhiqizo ovivinyiwe.
4. Qopha bese ubala
4.1 Qopha imodeli ye-viscometer ejikelezayo, inombolo ye-rotor kanye nesivinini esisetshenzisiwe, i-viscometer engaguquki (inani lika-K), izinga lokushisa elilinganisiwe, kanye nesilinganiso ngasinye. Inani.
Ifomula yokubala engu-4.2
I-Dynamic viscosity (MPa”s)=Ka lapho i-K iyi-viscometer constant elinganiswa ngoketshezi olujwayelekile lwe-viscosity eyaziwayo kanye ne-A iyi-Angle yokuphambuka
Isikhathi sokuthunyelwe: Ephreli-25-2024