HydroxyPropyyl Metylcellulose (HPMC) yog ib qho ntau yam ntxiv siv thoob plaws ntau yam kev lag luam vim nws cov khoom tshwj xeeb. Tsab ntawv no rho tawm rau hauv cov intricacies ntawm HPMC, tshawb txog nws cov khoom siv tshuaj lom, cov khoom, muaj zog, thiab cov ntawv thov sib txawv. Los ntawm cov tshuaj yuav khoom siv, cov khoom lag luam khoom noj rau cov khoom ntiag tug ntawm tus kheej, HPMC ua si lub luag haujlwm tseem ceeb, ua rau pom qhov tseem ceeb hauv kev tsim khoom niaj hnub thiab khoom tsim khoom.
HydroxyPropyyl methylcellose (HPMC) yog kev siv tshuaj cellule hloov kho uas pom ntau yam kev lag luam los ntawm cov kws tshuaj los tsim kho, khoom noj khoom haus, thiab tu tus kheej. Nws cov khoom tshwj xeeb ua rau nws tsis tseem ceeb hauv ntau cov kev siv, ua rau muaj kev ruaj ntseg, viscosity, thiab kev ua tau zoo ntawm ntau cov khoom.
1. DiCemical qauv thiab cov yam ntxwv
HPMC yog synthesized los ntawm cov tshuaj tiv thaiv ntawm alkali cellulose nrog antyl chloride thiab propylene oxide hauv cov pawg hydroxyprropyl thiab methoxy pawg. Qhov kev hloov kho no uas cuam tshuam cov khoom HPMC, suav nrog cov dej solubility, thermal gelation, zaj duab xis-formal tswj.
Cov degree ntawm kev hloov pauv (DS) thiab lub cev hnyav heev tau cuam tshuam cov khoom ntawm HPMC. Ntau dua DS txhim kho cov dej solubility thiab txo cov gelation kub, thaum lub sij hawm molecular hnyav cuam tshuam cov viscosity thiab cov yeeb yaj kiab-ua yeeb yaj kiab. Cov khoom lag luam no ua rau HPMC hloov tau rau ntau cov ntawv thov.
2.functions ntawm hpmc
Thickening thiab rhuaology tswj: HPMC ua raws li tus neeg sawv cev tuab hauv cov kev daws teeb meem aqueous, imparing viscosity thiab txhim kho kev ruaj ntseg ntawm cov qauv. Nws tus cwj pwm pseudoplastic tus cwj pwm tso cai rau kev kho raws li cov khoom lag luam ntau lawm, saib xyuas cov khoom lag luam nrog cov khoom ntws.
Zaj duab xis tsim: Vim tias nws muaj peev xwm ua cov pob tshab thiab hloov cov yeeb yaj kiab hloov pauv, cov tshuaj kho mob, thiab cov khoom tu tus kheej. Cov yeeb yaj kiab no muab cov khoom siv tsis sib xws, noo noo khaws cia, thiab tswj cov khoom xyaw nquag.
Dej khaws cia: hauv cov khoom siv tsim khoom xws li Mortars, plasters, thiab cov nplaum txhim kho kev ua haujlwm tau thiab tiv thaiv kom tsis txhob muaj dej ceev. Qhov no txhim kho adhesion, txo kev tawg, thiab ua kom muaj kev sib tsoo ntawm cov xis ntxias kev sib xyaw.
Binder thiab disintNordrant: hauv cov tshuaj yeeb yaj kiab, HPMC pabcuam ua cov ntawv sib xyaw, tuav cov khoom xyaw nquag ua ke hauv cov ntsiav tshuaj, tsiav tshuaj, thiab cov granules. Tsis tas li ntawd, nws lub peev xwm mus rau swell thiab disintegrate nyob rau aqueous in aouse media AIDS hauv kev tswj hwm cov tshuaj yeeb.
Stabilizer thiab emulsifier: HPMC tso cai kom raug ncua, emulsions, thiab ua npuas ncauj hauv cov zaub mov, kom zoo nkauj, thiab kev siv tshuaj pleev ib ce. Nws tiv thaiv theem sib cais, tswj kev ntxhib los mos, thiab txhim kho kev loj hlob microbial thiab oxidation.
3. daim npog ntawm HPMC
Kws Tshuaj: HPMC yog qhov tseem ceeb hauv cov khoom siv cov khoom siv hluav taws xob xws li cov ntsiav tshuaj, tsiav tshuaj, thiab pellets. Nws lub luag haujlwm yog cov phau ntawv, ua tsis taus, thiab tswj-tso tawm tus neeg saib xyuas kom ua tau zoo, kev nyab xeeb, thiab tus neeg siab ntev ntawm cov khoom lag luam.
Kev tsim kho: Hauv kev tsim kho kev tsim kho, HPMC ntxiv rau cov ntaub ntawv tso cai ua kom txhim kho kev ua haujlwm, khaws dej, thiab cov khoom nplaum. Nws txhim kho cov kev ua yeeb yam ntawm cov neeg nplua nuj, plasters, gutsws, thiab ua kom muaj zog, ua rau cov qauv ruaj khov thiab ua kom zoo nkauj.
Cov khoom noj thiab dej haus: HPMC pom cov ntawv thov hauv cov khoom lag luam ua cov tuab, stabilizer, thiab emulsifier. Nws yog feem ntau siv nyob rau hauv cov kua qaub, kev xaiv cov khoom noj, thiab cov khoom bakery los txhim kho kev ntxhib los mos, cov ncauj lus pom kev ruaj ntseg, thiab tshem tawm ruaj khov.
Kev Kho Mob: Hauv cov tshuaj pleev ib ce thiab cov khoom siv saib xyuas tus kheej, HPMC ua haujlwm ua ib zaj duab xis yav tas los, thickener, thiab ncua tus neeg sawv cev. Nws yog tam sim no hauv cream, tshuaj, zawv plaub hau, thiab tshuaj txhuam hniav, thiab tshuaj txhuam hniav, muab tshuaj txhuam zoo nkauj thiab txhim kho cov khoom lag luam.
Cov xim tsev thiab txheej: HPMC yog siv hauv cov xim tha xim dej, pleev xim, thiab cov nplaum kom haum, txhim kho zaj duab xis tsis kam, thiab txhim kho zaj duab xis tsim. Nws txhawb nqa cov khoom siv tsis zoo, cov nplaum kom cov substrates, thiab cov kav ntev ntawm cov nplaim xim.
4.Future kev pom thiab cov nyom
Txawm tias nws siv thoob plaws thiab versalility, kev sib tw xws li batch-to-to-batch hloov pauv, thiab kev txhawj xeeb ib puag ncig, thiab siv HPMC. Kev tshawb nrhiav yav tom ntej ua kom daws cov kev cov nyom no thaum tshawb nrhiav cov ntawv thov tshiab thiab muaj kev txhawb nqa HPMC derivatives.
HydroxyPropyyl methylcellose (HPMC) yog kev sib xyaw ua ke nrog cov ntawv thov sib txawv thoob plaws, kev kho mob, thiab kev saib xyuas tus kheej. Nws tshwj xeeb ua ke ntawm cov khoom, suav nrog cov tuab yaj duab thickening, ua yeeb yaj kiab, ua kom muaj peev xwm ua yeeb yaj kiab, thiab muaj zog nyob hauv kev tsim kho niaj hnub thiab khoom tsim khoom. Los ntawm kev nkag siab txog cov qauv tshuaj, thiab cov haujlwm hauv HPMC, kev lag luam tuaj yeem tsim cov kev xav tau tshiab thiab kev ua haujlwm siab uas ua tau raws li cov neeg tau txais kev pab thiab kev lag luam.
Lub Sijhawm Post: Feb-29-2024