Kev tsom xam thiab kev sim ntawm hydroxypropyl methyl cellulose (HPMC)

HydroxyPropylropropy cellulose (HPMC) yog cov khoom siv polymer ntau yam hauv kev lag luam, suav nrog cov tshuaj, kev tsim kho, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce. Daim ntawv no muab cov kev tsom xam ntawm HPMC, npog nws cov qauv tshuaj, cov khoom, tsim cov txheej txheem, thiab cov qauv kev sim.

1. spornroduction:
HydroxyPropy cellulose (HPMC) yog lub cellulose derivative tau los ntawm kev kho cellulose nrog cov tshuaj pleev roj pleev thiab methyl chloride. Nws yog dav siv nyob rau hauv ntau yam kev lag luam vim nws cov khoom tshwj xeeb, suav nrog cov thickening, zaj duab xis, kev ua kom muaj dej, thiab kev sib tw ua kom muaj peev xwm.

2. Diemical qauv thiab cov yam ntxwv ntawm HPMC:
HPMC yog qhov tsis-ionic cellulose ether nrog tshuaj lom neeg ntawm (C6h7o2 (Oh) 3-x (OC3 sawv cev rau qib kawm. Cov qib ntawm cov hloov chaw HPMC cov khoom siv, suav nrog viscosity, solubility, thiab thermal stability. HPMC yog soluble hauv dej thiab qee cov kuab tshuaj organic, ua cov kev daws teeb meem meej.

3.Muaj kev ua ntawm HPMC:
Kev tsim qauv ntawm HPMC cuam tshuam nrog Ericelification ntawm cellulose siv cov eplene oxide thiab methyl chloride. Cov degree ntawm kev hloov pauv tuaj yeem tswj hwm los ntawm kev kho cov tshuaj tiv thaiv kab mob, xws li cov tshuaj kub, pH, thiab lub sijhawm tiv thaiv pH, pH, thiab lub sijhawm. Lub txiaj ntsig HPM los ua kom huv si huv si thiab cov txheej txheem kom qhuav kom tau txais cov kev xav tau.

4. npog ntawm HPMC:
HPMC nrhiav tau cov ntawv thov uas dav hauv ntau yam kev lag luam, suav nrog cov tshuaj, cov khoom noj, kev tsim kho, tshuaj pleev ib ce, thiab cov khoom tu tus kheej. Hauv cov chaw kuaj tshuaj, HPMC yog siv los ua cov tuab dua, cov phau ntawv, thiab tus neeg sawv cev tso tawm hauv cov ntsiav tshuaj tsim qauv. Hauv kev lag luam khoom noj khoom haus, nws tau siv raws li lub thickening thiab ruaj khov tus neeg sawv cev hauv cov kua ntxwv, hnav khaub ncaws, thiab khoom noj siv mis. Hauv kev tsim kho, HPMC ntxiv rau mortars, plasters, thiab vuas cov nplaum nplaum los txhim kho kev ua haujlwm thiab adhesion. Ib qho ntxiv, HPMC yog siv hauv cov tshuaj pleev ib ce rau nws zaj duab xis-tsim thiab moisturizing tej yam.

5.Testing txoj kev rau HPMC:
a. Kev tsom xam spectroscopic: Fim Transform Infrared (Ftir) Resonance & Nuclear Sib Nqus Qauv Ntawm HPMC thiab paub meej tias nws cov qib hloov chaw.

b. Kev tsom xam Rheological: Rheatort soj ntsuam kev kuaj HPMC lub viscosity, thiab shear-thinning khoom, uas yog qhov tseem ceeb rau nws cov ntawv thov.

c. Thermal tsom xam: kev ntsuas calorimetry (DSC sib txawv (TGArravetric kev ntsuas (TGA) tau ua haujlwm kub thiab ntsuas qhov ntsuas kom haum rau cov ntawv thov tshwj xeeb.

d. Cov ntsiab lus noo noo tsom xam: Karl Fischer lub tsev pheeb suab yog siv los txiav txim siab txog cov ntsiab lus noo noo ntawm HPMC, uas yog qhov tseem ceeb rau kev tswj hwm nws lub neej ruaj khov thiab lub txee.

e. Kev txheeb xyuas me me: Laser txawv thiab cov duab me me tau faib cov particle loj ntawm HPMC hmoov, ua kom muaj txiaj ntsig zoo hauv cov qauv.

6.Txoj kev tswj hwm HPMC:
Kev ntsuas kev tswj hwm zoo rau HPMC suav nrog kev sim nruj ntawm cov khoom siv raw, thiab cov khoom lag luam ua tiav los ua kom ua tiav nrog cov qauv kev qhia thiab kev tswj xyuas. Qhov no cuam tshuam nrog kev sib txuas-rau-batch-batch muaj kev ntsuas, kev tshawb nrhiav kev ua haujlwm ruaj khov, GMP).

HydroxyPropylropyl cellulose (HPMC) yog cov polymer ntau yam nrog cov ntawv thov sib txawv thoob plaws ntau yam kev lag luam. Los ntawm kev tsom xam dav thiab kev sim tshuaj thiab kev kuaj, cov yam ntxwv ntawm HPMC tuaj yeem txiav txim siab, kom lawv muaj cov kev siv rau cov txheej txheem kev lag luam.