HPMC (Hydroxypropyl Methylcellulose) yog cov dej-soluble polymer uas tau siv dav hauv kev lag luam tshuaj pleev ib ce rau nws ntau yam thiab kev nyab xeeb. Raws li cov khoom tsis muaj tshuaj lom, tsis ua rau khaus, tsis yog-ionic, HPMC muab ntau yam txiaj ntsig rau cov tshuaj pleev ib ce, txhim kho kev ntxhib los mos, kev ua tau zoo thiab cov neeg siv kev paub ntawm cov khoom.
1. Thickening thiab gelling nyhuv
Ib qho kev siv tseem ceeb ntawm HPMC yog ua cov thickener thiab gelling tus neeg sawv cev. Hauv cov tshuaj pleev ib ce, qhov sib xws thiab kev ntxhib los mos yog qhov tseem ceeb uas cuam tshuam rau cov neeg siv kev paub. HPMC tuaj yeem ua kom cov viscosity ntawm cov khoom, ua kom nws smoother, elastic dua thiab yooj yim rau kev thov. Cov nyhuv no tsis txwv rau cov qauv dej, tab sis kuj suav nrog cov qauv roj los yog cov tshuaj pleev xim. Nyob rau hauv daim tawv nqaij cream, lub ntsej muag lub ntsej muag, lub ntsej muag cleansers thiab lwm yam khoom, HPMC feem ntau yog siv los txhim kho nws cov kev ntxhib los mos, xyuas kom meej tias nws yog sib npaug zos rau ntawm daim tawv nqaij nto, thiab tsim ib tug mos mos thiab du zaj duab xis ntawm daim tawv nqaij.
Cov khoom gelling ntawm HPMC yog tshwj xeeb tshaj yog haum rau gel-hom khoom tu tawv nqaij, xws li lub ntsej muag lub ntsej muag thiab lub qhov muag gels. Cov khoom no yuav tsum tau ua ib zaj duab xis nyias ntawm daim tawv nqaij tom qab daim ntawv thov, thiab HPMC tuaj yeem ua tiav qhov no nyob rau hauv nws cov dej thaum tuav cov khoom ruaj khov thiab tiv thaiv dej.
2. Moisturizing nyhuv
Moisturizing yog ib qho kev thov nyob rau hauv cov tshuaj pleev ib ce, tshwj xeeb tshaj yog nyob rau hauv kev tu tawv nqaij thiab plaub hau khoom. Raws li cov khoom khaws cov dej noo zoo, HPMC tuaj yeem tsim cov yeeb yaj kiab tiv thaiv ntawm daim tawv nqaij lossis plaub hau, ua kom cov dej noo zoo thiab tiv thaiv nws los ntawm evaporating. Nws cov qauv hydrophilic molecular tso cai rau nws nqus thiab khaws qee qhov dej noo, yog li ua kom cov tawv nqaij moisturized ntev tom qab siv cov khoom.
Hauv cov khoom tu tawv nqaij qhuav, cov nyhuv moisturizing ntawm HPMC yog qhov tshwj xeeb. Nws tuaj yeem nqus dej noo sai sai, ua kom cov tawv nqaij mos thiab noo, thiab txo cov dryness thiab tev tawm los ntawm cov tawv nqaij tsis txaus. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem kho cov dej-roj sib npaug kom cov khoom yuav tsis muaj roj lossis qhuav dhau thaum siv, thiab tsim nyog rau cov neeg siv khoom nrog ntau hom tawv nqaij.
3. Stabilizer nyhuv
Ntau cov qauv tshuaj pleev ib ce muaj ntau yam khoom xyaw, tshwj xeeb tshaj yog cov dej-roj sib tov, thiab feem ntau yuav tsum muaj cov khoom xyaw los xyuas kom meej qhov ruaj khov ntawm cov mis. Raws li cov polymer uas tsis yog-ionic, HPMC tuaj yeem ua lub luag haujlwm zoo emulsifying thiab ruaj khov los tiv thaiv kev sib cais ntawm cov roj thiab dej hauv cov mis. Nws tuaj yeem ua kom ruaj khov emulsions thiab tshem tawm, tiv thaiv cov nag lossis daus ntawm cov khoom xyaw, yog li txhim kho lub txee lub neej thiab siv kev paub ntawm cov khoom.
HPMC tseem tuaj yeem siv los ua tus neeg saib xyuas kev daws teeb meem hauv cov tshuaj pleev ib ce xws li tshuaj pleev ib ce, tshuaj pleev, tshuaj zawv plaub hau thiab tshuaj pleev thaiv hnub kom tiv thaiv cov khoom tsis zoo (xws li titanium dioxide lossis zinc oxide hauv cov tshuaj pleev thaiv hnub) los ntawm kev sib tsoo, ua kom cov khoom sib xws thiab kev ua tau zoo ntawm cov khoom.
4. Zaj duab xis-tsim thiab txhim khu ductility
HPMC muaj cov khoom ua yeeb yaj kiab zoo heev, uas ua rau nws muaj cov khoom zoo tshaj plaws hauv cov tshuaj pleev ib ce, tshwj xeeb tshaj yog nyob rau hauv cov xim pleev xim. Tom qab siv cov khoom uas muaj HPMC, nws muaj peev xwm tsim ib tug nyias thiab breathable zaj duab xis nyob rau saum npoo ntawm daim tawv nqaij, txhim khu lub durability ntawm cov khoom. Piv txwv li, hauv cov kua hauv paus, qhov muag duab ntxoov ntxoo thiab daim di ncauj, HPMC tuaj yeem txhim kho nws qhov adhesion, ua rau cov pleev kom ruaj khov thiab tsis tshua muaj kev poob.
Hauv cov ntsia thawv polish, HPMC kuj tseem tuaj yeem muab cov teebmeem zoo sib xws, pab cov ntsia thawv polish kom ua raws li cov ntsia hlau ntsia hlau, thaum tsim cov yeeb yaj kiab du thiab ci, ua kom nws ci thiab khawb tsis kam. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem txhim kho cov ductility ntawm cov khoom tu plaub hau, pab ua kom nws sib npaug ntawm cov plaub hau, txo qhov roughness, thiab txhim kho cov luster thiab smoothness ntawm cov plaub hau.
5. Me me thiab tsis khaus
HPMC, raws li ib txwm muab los ntawm cellulose derivative, tsis ua rau tawv nqaij thiab yog li tsim nyog rau cov tawv nqaij rhiab heev. Ntau cov qauv tshuaj pleev ib ce muaj cov khoom xyaw nquag, xws li cov tshuaj tua kab mob antioxidant, cov tshuaj tiv thaiv kab mob los yog cov khoom siv tiv thaiv kev laus, uas yuav ua rau qee qhov tawv nqaij rhiab, thiab HPMC, raws li cov tshuaj tsis muaj zog, tuaj yeem txo qhov khaus ntawm cov khoom xyaw rau ntawm daim tawv nqaij. Tsis tas li ntawd, HPMC tsis muaj xim thiab tsis muaj ntxhiab thiab tsis cuam tshuam rau cov tsos thiab tsw ntawm cov khoom, ua rau nws nyiam stabilizer hauv ntau cov tshuaj pleev ib ce.
6. Txhim kho fluidity thiab dispersibility ntawm cov khoom
Nyob rau hauv ntau cov qauv tshuaj pleev ib ce, tshwj xeeb tshaj yog cov hmoov los yog granular cov khoom xws li nias hmoov, blush thiab xoob hmoov, HPMC tuaj yeem txhim kho cov dej ntws thiab dispersibility ntawm cov khoom. Nws pab cov khoom xyaw hmoov kom nyob twj ywm thaum sib tov, tiv thaiv agglomeration, thiab txhim kho cov fluidity ntawm cov hmoov, ua rau cov khoom zoo sib xws thiab du thaum siv thiab siv tau yooj yim.
HPMC tseem tuaj yeem txhim kho cov khoom rheological ntawm cov khoom ua kua, ua rau lawv yooj yim ntws hauv lub raj mis thaum tuav ib qho viscosity thaum extruded. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov khoom uas yuav tsum tau siv cov twj tso kua mis lossis cov khoom siv raj, uas tuaj yeem txhim kho cov neeg siv khoom.
7. Imparting gloss thiab pob tshab
Hauv cov khoom siv pob tshab, xws li lub ntsej muag pob tshab, pob tshab gels thiab tshuaj pleev plaub hau, kev siv HPMC tuaj yeem txhim kho qhov pom tseeb thiab ci ntawm cov khoom. Cov cuab yeej no ua rau nws nrov heev hauv cov khoom tu tawv nqaij thiab cov plaub hau zoo heev. HPMC tuaj yeem tsim cov zaj duab xis micro-glossy rau ntawm daim tawv nqaij, txhim kho qhov ci ntawm daim tawv nqaij thiab ua kom nws zoo dua thiab ci dua.
8. Biocompatibility thiab kev nyab xeeb
HPMC yog cov khoom siv nrog biocompatibility zoo heev. Nws yuav tsis nqus los ntawm daim tawv nqaij thiab yuav tsis ua rau tawv nqaij ua xua. Yog li ntawd, nws yog dav siv nyob rau hauv rhiab ntawm daim tawv nqaij thiab cov me nyuam cov khoom. Piv nrog rau lwm cov thickeners los yog gelling agents, HPMC yog non-toxic thiab non-irritating, haum rau txhua hom tawv nqaij. Tsis tas li ntawd, HPMC muaj ib puag ncig zoo degradability thiab yuav tsis ua phem rau ib puag ncig. Nws yog ib qho khoom siv rau ib puag ncig.
Kev siv dav ntawm HPMC hauv cov tshuaj pleev ib ce yog vim nws muaj ntau yam thiab kev nyab xeeb. Txawm hais tias yog cov thickener, moisturizer, zaj duab xis qub, los yog ua kom ruaj khov, ib qho khoom siv uas txhim kho ductility thiab txhim kho fluidity, HPMC tuaj yeem ua rau muaj txiaj ntsig zoo rau cov tshuaj pleev ib ce. Tsis tas li ntawd, nws qhov me me thiab biocompatibility ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov tawv nqaij rhiab thiab cov khoom zoo ib puag ncig. Hauv cov qauv tshuaj pleev ib ce niaj hnub, lub luag haujlwm ntawm HPMC tsis tuaj yeem tsis quav ntsej. Nws tsis tsuas yog txhim kho kev ua tau zoo ntawm cov khoom, tab sis kuj txhim kho cov neeg siv khoom.
Post lub sij hawm: Oct-11-2024