Zomwe Zimakhudza Kusunga Madzi a Cellulose

Nthawi zambiri, kukhuthala kwa hydroxypropyl methylcellulose ndikokwera. Komabe, zimatengeranso kuchuluka kwa kulowetsa m'malo komanso kuchuluka kwa kuchuluka kwa m'malo. Hydroxypropyl methyl cellulose ndi wa non-ionic cellulose ether, mawonekedwe ake ndi ufa woyera, wopanda fungo komanso wopanda kukoma, wosungunuka m'madzi ndi zosungunulira za polar organic ndi gawo loyenera la ethanol / madzi, propanol / madzi, dichlorethylene Ndiwosungunuka mu alkanes, acetone, ndi ethanol mtheradi, ndipo amafufuma kukhala omveka bwino kapena pang'ono turbid colloidal njira m'madzi ozizira. Njira yamadzimadzi imakhala ndi zochitika zapamtunda, imapanga filimu yopyapyala itatha kuyanika, imasintha kuchokera ku sol kupita ku gel motsatizana potentha ndi kuziziritsa. Kuwonekera kwapamwamba komanso magwiridwe antchito okhazikika.

Hydroxypropyl methylcellulose ali ndi katundu wa kutentha kwa gelation. Pambuyo pa njira yamadzimadzi ya mankhwalawo itatenthedwa, imapanga gel osakaniza ndi mpweya, ndipo imasungunuka pambuyo pozizira. Kutentha kwa gelation kwazinthu zosiyanasiyana kumasiyana. Kusungunuka kumasiyanasiyana ndi kukhuthala. M'munsi mamasukidwe akayendedwe, kwambiri solubility. Makhalidwe a hydroxypropyl methylcellulose okhala ndi mawonekedwe osiyanasiyana amasiyana. Kusungunuka kwa hydroxypropyl methylcellulose m'madzi sikukhudzidwa ndi mtengo wa pH.

Mawonekedwe: Ili ndi mawonekedwe a kukhuthala, kutulutsa mchere, kukhazikika kwa PH, kusunga madzi, kukhazikika kwa mawonekedwe, mawonekedwe abwino kwambiri opanga mafilimu, kukana kwa ma enzyme osiyanasiyana, dispersibility ndi kugwirizana.

Kusungidwa kwa madzi kwa zinthu za hydroxypropyl methylcellulose nthawi zambiri kumakhudzidwa ndi izi:
1. Kufanana kwa hydroxypropyl methylcellulose
Ma hydroxypropyl methylcellulose, methoxyl ndi hydroxypropoxyl amagawidwa mofanana, ndipo kuchuluka kwa madzi kumakhala kwakukulu.
2. Hydroxypropyl methylcellulose kutentha kwa gel osakaniza
Kutentha kwa gel osakaniza kumapangitsa kuti madzi asapitirire; apo ayi, kutsika kwa madzi osungira madzi.
3. Viscosity ya hydroxypropyl methylcellulose
Pamene mamasukidwe akayendedwe a hydroxypropyl methylcellulose akuwonjezeka, kuchuluka kwa madzi osungirako kumawonjezekanso; pamene mamasukidwe akayendedwe akufika pamlingo wina, kuwonjezeka kwa madzi osungira madzi kumakhala kofatsa.
4. Kuchuluka kwa hydroxypropyl methylcellulose anawonjezera
Kuchuluka kwa hydroxypropyl methylcellulose kumapangitsa kuti madzi asungidwe komanso kuti madzi asungidwe bwino. Pakati pa 0.25-0.6% yowonjezera, kuchuluka kwa madzi osungira madzi kumawonjezeka mofulumira ndi kuwonjezeka kwa ndalama zowonjezera; pamene kuchuluka kwa madzi kumawonjezeka, kuchuluka kwa madzi kumachepetsedwa.