Hydroxypropylmethylcellulose (HPMC) yog ib qho polymer ua los ntawm kev hloov kho cov cellulose ntuj. Nws muaj ntau yam kev siv hauv kev lag luam hauv kev lag luam tshuaj, khoom noj, tshuaj pleev ib ce, thiab kev tsim kho. HPMC yog ib qho cellulose ether nonionic uas yooj yim yaj hauv dej thiab tuaj yeem tsim cov kua pob tshab, viscous uas tseem ruaj khov ntawm ntau pH.
Cov yam ntxwv ntawm HPMC muaj xws li:
1. Muaj peev xwm khaws dej tau zoo: HPMC tuaj yeem nqus dej thiab tuav nws rau hauv qhov chaw, ua rau nws muaj txiaj ntsig zoo li cov khoom ua kom tuab, emulsifier, thiab stabilizer hauv ntau daim ntawv thov.
2. Cov yam ntxwv zoo ntawm kev tsim cov zaj duab xis: HPMC tuaj yeem tsim cov zaj duab xis pob tshab nrog lub zog zoo. Qhov no tso cai rau nws siv rau hauv kev tsim cov tshuaj ntsiav, cov tshuaj pleev xim thiab lwm yam khoom.
3. Kev ua haujlwm ntawm qhov chaw siab: HPMC muaj cov khoom ua haujlwm ntawm qhov chaw, uas tso cai rau nws siv ua tus neeg sawv cev ntub dej thiab cov khoom tawg.
4. Kev ruaj khov thermal zoo: HPMC ruaj khov ntawm qhov kub siab thiab tuaj yeem siv rau hauv cov ntawv thov uas xav tau qhov kev ua tau zoo no.
5. Kev nplaum zoo rau ntau qhov chaw: HPMC tuaj yeem sib txuas rau ntau qhov chaw, ua rau nws muaj txiaj ntsig zoo hauv kev tsim cov nplaum thiab cov txheej txheem.
Kev siv HPMC hauv ntau yam lag luam:
1. Tshuaj: HPMC siv dav hauv kev npaj tshuaj ua tus binder, disintegrant, thiab viscosity regulator. Nws muaj nyob rau hauv cov ntsiav tshuaj, capsules thiab kua formulations.
2. Khoom noj khoom haus: HPMC siv ua cov khoom ua kom tuab, ruaj khov thiab emulsifier hauv khoom noj. Nws tuaj yeem siv rau hauv cov khoom xws li ice cream, yogurt thiab salad dressings.
3. Tshuaj pleev ib ce: HPMC siv dav hauv tshuaj pleev ib ce ua cov khoom ua kom tuab, emulsifier, thiab zaj duab xis. Nws tuaj yeem siv rau hauv cov khoom xws li tshuaj pleev, tshuaj pleev thiab tshuaj zawv plaub hau.
4. Kev Tsim Kho: HPMC yog ib qho khoom xyaw tseem ceeb hauv ntau cov ntaub ntawv tsim kho xws li cov nplaum pobzeb, cov plasters uas ua los ntawm cement thiab cov mortars. Nws ua haujlwm ua tus neeg sawv cev khaws dej, txhim kho kev ua haujlwm, thiab muab kev nplaum zoo dua thiab kev tswj hwm kev ntswj.
HPMC kev lag luam piv txwv:
1. Kev khaws dej: Tus nqi khaws dej ntawm HPMC yog ib qho tseem ceeb uas txiav txim siab nws qhov ua tau zoo ua cov khoom ua kom tuab thiab nplaum. Cov cuab yeej muaj cov nqi siv hauv kev lag luam ntawm 80-100%.
2. Viscosity: Viscosity yog qhov tseem ceeb hauv kev xaiv HPMC rau ntau yam kev siv. Kev lag luam piv rau viscosity ntau ntawm 5,000 txog 150,000 mPa.s.
3. Cov ntsiab lus ntawm pawg Methoxyl: Cov ntsiab lus ntawm pawg methoxyl ntawm HPMC cuam tshuam rau nws qhov solubility, viscosity thiab bioavailability. Qhov piv txwv ntawm kev lag luam rau cov ntsiab lus methoxy yog ntawm 19% thiab 30%.
4. Cov ntsiab lus Hydroxypropyl: Cov ntsiab lus hydroxypropyl cuam tshuam rau qhov solubility thiab viscosity ntawm HPMC. Qhov piv txwv ntawm kev lag luam rau cov ntsiab lus hydroxypropyl yog nruab nrab ntawm 4% thiab 12%.
HPMC yog ib hom polymer uas siv tau ntau yam hauv kev lag luam. Nws cov yam ntxwv tshwj xeeb ua rau nws siv tau rau hauv kev lag luam tshuaj, khoom noj, tshuaj pleev ib ce thiab kev tsim kho. Cov piv txwv ntawm kev lag luam rau ntau yam kev ntsuas pab xaiv qib HPMC kom haum rau ib daim ntawv thov tshwj xeeb.
Lub sijhawm tshaj tawm: Cuaj hlis-14-2023