Hypromellose, tseem hu ua HydroxyPropyyl Metylcellulose (HPMC), yog ib qho hluavtaws hluavtaws (HPMC) Vim nws cov khoom lag luam thiab cov khoom siv lub cev, HPMC feem ntau siv los ua cov tuab, stabilizer thiab adcesive hauv cov khoom noj thiab kev lag luam ntawm tus kheej. Hauv tsab xov xwm no, peb sib tham txog cov chulistry of HPMC thiab lawv cov ntawv thov tseem ceeb.
1. Solubility
Ib qho ntawm cov tshuaj lom neeg tseem ceeb tshaj plaws ntawm HPMC yog nws solubility. HPMC yog soluble hauv dej thiab ntau cov kuab tshuaj organic, ua rau nws muaj feem zoo rau kev siv tshuaj yeeb thiab lwm yam kev siv cov kev siv cov kev siv. Txawm li cas los xij, lub solubility ntawm HPMC yog txiav txim siab ntau los ntawm nws cov qib ntawm kev hloov pauv (DS), uas txiav txim siab tus naj npawb ntawm hydroxypropyl thiab methyl pab pawg tam sim no nyob rau hauv cov saw polymer. HPMCs nrog cov DS ntau dua tau qis solubility vim muaj kev sib txuam sib xyaw.
2. Rheology
Lwm cov khoom siv tshuaj lom neeg tseem ceeb ntawm HPMC yog nws lub ntsej muag rheological. HPMC lub peev xwm los tsim cov gel-zoo li cov network raws li kev siv dej tuaj yeem siv los tswj lub viscosity thiab ntws yam ntawm cov qauv. HPMC tseem ua pov thawj tsis yog-Newtonian ntws tus cwj pwm, lub ntsiab lus uas nws viscosity hloov raws li cov ntawv thov shear tus nqi. Cov cuab yeej no tuaj yeem tswj hwm ntxiv los ntawm kev hloov kho cov concentration ntawm HPMC thiab DS hauv kev tsim qauv.
3. Zaj duab xis tsim
HPMC tseem muaj dav siv raws li zaj duab xis yav tas los vim tias nws muaj peev xwm los ua cov yeeb yaj kiab niaj hnub thaum thov rau substrate. Cov yeeb yaj kiab ua yeeb yam ntawm HPMC vam khom nws DS, viscosity thiab muaj cov tshuab yas, uas tuaj yeem txhim kho elasticity thiab yooj ntawm zaj duab xis. Cov yeeb yaj kiab ua los ntawm HPMC feem ntau yog siv hauv kev siv tshuaj vim tias lawv tso cai tswj kev tso cov khoom xyaw nquag.
4. Kev sib raug zoo
HPMC yog qhov kev zam tau ntau tshaj thiab tuaj yeem siv ntau yam qauv. Nws yog sib xws nrog cov khoom xyaw feem ntau, suav nrog cov khoom xyaw tshuaj xyaw (APIs) thiab lwm yam kev zam tshwj xeeb siv hauv cov tshuaj uas siv tau. HPMC kuj tau tshaj yog ntau cov zaub mov noj, ua rau nws xaiv cov khoom lag luam zoo rau cov zaub mov.
5. Tshuaj Muaj Peev Xwm
HPMC yog lub polymer ruaj khov uas tiv thaiv hydrolysis thiab lwm cov tshuaj lom neeg. Qhov kev ruaj khov no ua rau nws muaj cov khoom siv zoo tagnrho rau cov tshuaj siv tshuaj yeeb thaum nws tiv thaiv cov khoom siv nquag los ntawm kev ua tsis taus thiab nce nws cov khoom siv. Txawm li cas los xij, cov tshuaj ruaj khov ntawm HPMC tuaj yeem cuam tshuam los ntawm cov cua sov siab, thiab qee yam av noo, uas tuaj yeem ua rau cov polymer, uas tuaj yeem ua rau cov ua haujlwm ua rau nws tau txais txiaj ntsig.
6. Biocompatibility
Thaum kawg, HPMC yog cov biocomple heev uas muaj kev nyab xeeb rau siv hauv cov tshuaj thiab cov khoom lag luam saib xyuas tus kheej. Nws tsis yog-lom, tsis-immunogenic thiab biodegrable, ua rau nws zoo tagnrho rau cov qauv kev xav tau tsawg kawg thiab qhov kev nyab xeeb tsawg tshaj plaws.
In summary, HPMC hypromellose is a multifunctional polymer with a range of important chemical properties, including solubility, rheology, film-forming properties, compatibility, chemical stability, and biocompatibility. Cov khoom no ua rau nws muaj qhov zoo tshaj plaws rau kev siv tshuaj yeeb thiab lwm yam kev siv hauv cov khoom noj thiab kev lag luam zoo. Raws li kev tshawb fawb txuas ntxiv nthuav peb txoj kev nkag siab ntawm HPMCs, lawv cov khoom muaj qee zaum yuav pom cov ntawv thov dav dav hauv lub neej yav tom ntej.
Lub Sijhawm Post: Jul-28-2023