Kodi katundu wosunga madzi wa cellulose ether ndi chiyani?

Nthawi zambiri, mamasukidwe akayendedwe ahydroxypropyl methylcellulosendizokwera, koma zimatengeranso kuchuluka kwa kulowetsa m'malo komanso kuchuluka kwa kulowetsa m'malo. Hydroxypropyl methylcellulosendi non-ionic mapadi efa ndi maonekedwe woyera ufa ndipo palibe Odorless ndi zoipa, sungunuka m'madzi ndi zambiri polar zosungunulira organic ndi milingo yoyenera ya Mowa/madzi, propanol/madzi, dichloroethane, etc., insoluble mu acetone ndi Mowa mtheradi, imafufuma kukhala colloid yowoneka bwino kapena yamtambo pang'ono 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 matenthedwe a 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 opangira mafilimu, kukana kwa ma enzyme, dispersibility ndi kugwirizana.

Thekusunga madziZinthu za hydroxypropyl methylcellulose nthawi zambiri zimakhudzidwa 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, m'munsimu madzi posungira mlingo.

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 asamasungidwe 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, kuwonjezeka kwa chiwerengero cha madzi osungira madzi kumachepa.