Methylcellulose (MC) uye Hydroxypropyl Methylcellulose (HPMC) ose ari maviri anowanzo shandiswa mvura-soluble cellulose derivatives, anoshandiswa zvakanyanya muchikafu, mishonga, kuvaka uye kutarisira munhu.
1. Kusiyana kwemaitiro
Methylcellulose (MC):
Methylcellulose inogadzirwa neselulosi inowanikwa nekutsiva chikamu chemapoka ehydroxyl e cellulose nemethyl (-OCH3).
Chimiro chayo chemakemikari chiri nyore, kunyanya chinoumbwa ne cellulose skeleton uye methyl substituent.
Hydroxypropyl Methylcellulose (HPMC):
HPMC inoumbwa nekuwedzera kuunza hydroxypropyl (-C3H7O) inotsiva pahwaro hwemethylcellulose.
Iyi shanduko yemaitiro inoita kuti zvive zvakanyanya kubatsira maererano nekunyungudika uye viscosity maitiro mumvura.
2. Solubility
Methylcellulose inonyungudika nyore mumvura inotonhora, asi isinganyungudika nyore mumvura inopisa, uye kazhinji inoratidza colloidal hunhu. Izvi zvinoita kuti zvimiro zveMC zvishanduke kana tembiricha yakwira.
Hydroxypropyl Methylcellulose inogona kunyatsonyungudika mumvura inotonhora uye inopisa, uye kunyungudika kwayo kuri nani pane iyo yemethylcellulose. HPMC inogona kuramba ichichengetedza kunyungudika kwayo kwemvura pakupisa kwakanyanya uye yakakodzera maapplication anoda kurapwa kupisa.
3. Viscosity maitiro
Methylcellulose ine viscosity yakaderera uye inokodzera maumbirwo ayo asingade yakakwira viscosity.
Hydroxypropyl methylcellulose ine viscosity yakakwirira uye inogona kugadziriswa nekuchinja mamolecular uremu uye dhigirii rekutsiva. Izvi zvinoita kuti HPMC iwedzere kuchinjika mumhando dzakasiyana dzekushandisa, kunyanya mumaindasitiri ekuvaka uye emishonga.
4. Nzvimbo dzekushandisa
Methylcellulose inowanzoshandiswa muindasitiri yechikafu seyakakora, emulsifier uye stabilizer, uye inoshandiswawo mune zvimwe zvigadzirwa zvemishonga sechinhu chekuputira chemishonga.
Hydroxypropyl methylcellulose ine yakafara application. Pamusoro pechikafu nemishonga, inoshandiswawo zvakanyanya mukuvaka (senge dhaka rakaoma) uye zvigadzirwa zvekuchengeta munhu (semafuta eganda uye shampoos) nekuda kweiyo yakanaka yekugadzira firimu uye yekunamatira zvinhu.
5. Maitiro ekuita
Methylcellulose ine yakanakisa kuchengetedza mvura uye firimu-inogadzira zvivakwa uye inowanzoshandiswa mune zvigadzirwa zvinoda kuchengetedza unyoro.
Hydroxypropyl methylcellulose ine yakanaka yekudzivirira kupisa uye yakanakisa firimu-kuumba zvimiro mukuwedzera pakuchengetedza mvura, saka inoita zvirinani mumashandisirwo ane yakanyanya tembiricha kurapwa.
6. Kuchengetedza uye kugadzikana
Ose ari maviri asiri echikafu ekuwedzera uye anowanzoonekwa akachengeteka. Nekudaro, HPMC inogona kufarirwa mune mamwe maapplication nekuda kwekugadzikana kwayo uye kuenderana.
Methylcellulose uye hydroxypropyl methylcellulose inosiyana zvakanyanya mumakemikari chimiro, solubility, viscosity maitiro uye nzvimbo dzekushandisa. Kusarudzwa kwezvinhu zvakakodzera kunowanzoenderana nezvinodiwa zveimwe application. MC inokodzera kureruka kukora uye kudzikamisa maapplication, nepo HPMC inonyanya kukodzera kune yakaoma maindasitiri uye zvekutengesa zvikumbiro nekuda kwekunyanya kunyungudika uye viscosity kugadzirisa kugona.
Nguva yekutumira: Oct-21-2024