Zoo tau hloov hydroxyprropyl cellulose (HSHPC) yog ib qho tseem ceeb ntawm cellulose, ib txwm muaj nyob hauv cov phab ntsa ntawm tes ntawm cov nroj tsuag. Nws yog kev hloov kho ntau dhau los ntawm kev siv tshuaj lom neeg los txhim kho nws cov solubility, viscosity, thiab lwm yam khoom rau ntau yam kev lag luam thiab chaw tshuaj noj khoom haus.
1. Taw qhia rau cellulose thiab derivatives:
Cellulose: Cellulose yog ib polysaccharide muaj cov chav dej qab zib rov ua dua los ntawm β (1 → 4) glycosidic bonds. Nws yog ib qho ntawm cov muaj ntau heev biopolymers hauv ntiaj teb, feem ntau yog los ntawm cov khoom cog ntoo xws li cov ntoo ntoo, paj rwb, thiab lwm yam nroj tsuag.
Cellulose derivatives: Tshuaj hloov cellulose cellulose verivatives nrog cov khoom tshwj xeeb. Cov kev hloov kho no suav nrog cov pab pawg hydroxyl ntawm cov pab pawg cellulose zoo li methylatives, hydroxyethyl cellulose, thiab hydroxyproyl cellulose.
2. Khoom cua ntawm qhov hloov tau zoo heev hydroxyprropyl cellulose:
Tshuaj Kho Mob Tshuaj Siv: Yooj yim hloov hydroxyprropyl cellulose yog synthesized los ntawm reacylene oxide nyob rau hauv lub xub ntiag ntawm catalyst. Cov txheej txheem no ua rau cov pab pawg hauv hydroxyl nrog Hydroxypropylropyl.
Qib ntawm hloov chaw: Cov qib hloov pauv (DS) yog hais txog cov pab pawg hydroxyproprodloplo hauv lub cellulose chart. Cov txiaj ntsig DS muaj ntau dua kis tau ntau yam hloov chaw, ua rau muaj kev hloov kho hydroxyprropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylropylroplose cellulose.
3. Cov khoom ntawm qhov hloov tau hydroxyprropyl cellulose:
Solubility: HSHPC yog feem ntau soluble hauv dej, ethanol, thiab lwm yam kuab tshuaj polar. Cov qib ntawm cov hloov pauv cuam tshuam nws solubility thiab viscosity.
Viscosity: Yooj yim hloov hydropropyl cellulose cov tshuaj vwm khees siab viscosity hauv kev daws teeb meem siab thiab ruaj khov nyob rau hauv ntau yam kev lag luam.
Thermal Stability: HSHPC qhia tau zoo thermal ruaj khov, tswj nws cov khoom dhau ntau yam ntawm ntau qhov kub.
Kev sib txuam: Nws tau tshaj ntau lwm cov polymers thiab ntxiv siv hauv cov tshuaj thiab cov qauv kev lag luam.
4. Kev siv cov kev siv ntawm hydroxyprropyl cellulose:
Kws Tshuaj: HSHPC tau siv dav hauv cov ntaub ntawv ntawm cov kws tshuaj zoo li lub ntsej muag, duab dhos ua yeeb yam, thiab stabilizos nyob rau hauv cov ntsiav tshuaj, tsiav tshuaj, thiab cov qauv zoo nkauj, thiab cov qauv zoo nkauj, thiab cov qauv zoo nkauj, thiab cov txuj ci tseem ceeb.
Cov khoom siv saib xyuas tus kheej: Nws yog ua haujlwm hauv ntau yam khoom siv saib xyuas tus kheej xws li cream, tshuaj, thiab cov txiv hmab kom muaj viscosity thiab txhim kho kev ntxhibosity thiab txhim kho kev ntxhibtaws.
Kev Lag Luam Khoom Noj: Yooj yim hloov hydropropyl cellulose yog siv nyob rau hauv cov khoom tuab, thiab lwm yam kev hnav ris tsho.
Txheej Txheem Txheej Txheem thiab cov nplaum: Vim nws cov yeeb yaj kiab ua yeeb yam, HSHPC pom cov ntawv thov, cov nplaum thiab pleev xim rau txhim kho adhesion thiab coating kev ncaj ncees.
Kev siv cov ntaub ntawv: Nws tau ua haujlwm hauv ntau cov ntawv thov xws li ntawv raug xws li ntawv tsim khoom, cov ntawv nyeem, thiab cov khoom siv ua kom tuab thiab khi.
5. Yav tom ntej kev nkag siab thiab cov nyom:
Cov ntawv thov biomedical: nrog kev tshawb fawb tsis tu ncua, HSHPC yuav pom cov ntawv thov tshiab hauv cov ntaub ntawv tshiab, suav nrog cov tshuaj siv tshuaj yeeb, ntaub so ntswg, thiab cov kiav txhab kho kom zoo.
Kev cuam tshuam ib puag ncig: Raws li nrog cov tshuaj lom neeg muaj feem, ib puag ncig yuav tsum ua tib zoo txiav txim siab, thiab kev siv zog yuav tsum tsim kho cov txheej txheem ntau lawm thiab cov txheej txheem ua dua tshiab.
Kev txiav txim siab tswj hwm: Cov kev tswj hwm lub cev xws li FDA (Chaw Tswj Khoom Noj) thiab EMA tshuaj noj cov tshuaj noj hauv cov tshuaj thiab cov qauv hauv nroog, tsim nyog ua raws li kev nyab xeeb thiab cov qauv kev nyab xeeb.
Zoo hloov hydroxyprropyl cellulose yog ib qho polymer ntau yam los ntawm cov cellulose los ntawm kev hloov tshuaj ntau ntxiv. Nws cov khoom tshwj xeeb ua rau nws muaj txiaj ntsig zoo nyob rau hauv ntau yam kev lag luam, suav nrog cov tshuaj, kev saib xyuas tus kheej, khoom noj khoom haus, khoom noj khoom nplaum. Kev tshawb fawb txuas ntxiv mus tshawb nrhiav rau hauv nws cov kev cog lus synthesis, thiab cov ntawv thov cog lus kom qhib cov cellule cellule derivative hauv ntau thaj teb. Txawm li cas los xij, nws yog qhov tseem ceeb rau kev daws cov kev sib tw xws li cuam tshuam ib puag ncig thiab kev tswj hwm kev ua raws li nws lub luag haujlwm nyob rau yav tom ntej.
Lub Sijhawm Post: Feb-18-2025