Hydroxypropylencellulose (HPMC) yog kev hloov kho hluavtaws ntawm cellulose, lub ntuj muaj zog pom hauv tsob ntoo cell phab ntsa. Thaum HPMC nws tus kheej tsis nruj me ntsis biopolymer vim nws yog tshuaj series, nws yog feem ntau suav hais tias yog ib qho kev sib xws los yog hloov kho biopolymers.
A. Cov lus qhia rau hydroxypropyl methylcellose:
HydroxyPropyyl methylcellulose (HPMC):
Hydroxypropylraylencellulose (HPMC) yog ib qho tseem ceeb ntawm cellulose, ib txoj kab polymer muaj cov roj haruc. Cellulose yog cov txheej txheem tseem ceeb ntawm cov nroj tsuag cell. HPMC yog tsim los ntawm kev siv cellulation cellulose los ntawm kev ntxiv hydroxypropyl thiab methyl pawg.
B. Cov qauv thiab kev ua tau zoo:
1. Dememical qauv:
Tus qauv tshuaj ntawm HPMC muaj cov cellulose cellulose bear hydroxypropylropyl thiab methyl pawg. Qib ntawm kev hloov pauv (DS) yog hais txog tus naj npawb nruab nrab ntawm hydroxypropyl thiab methyl pawg ib chav dej qab zib hauv lub cellulose chav tsev. Qhov kev hloov kho no hloov lub cev nqaij daim tawv thiab tshuaj ntawm cellulose, ua rau muaj cov qhab nia HPMC nrog sib txawv vascosities, solubility thiab gel cov khoom.
2.Praysical yam ntxwv:
Solubility: HPMC tau ploj mus hauv dej thiab ua cov kev daws teeb meem, ua rau nws muaj txiaj ntsig zoo hauv ntau cov ntawv thov suav nrog cov tshuaj, khoom noj.
Viscosity: lub viscos ntawm HPMC kev daws teeb meem tuaj yeem tswj hwm los ntawm kev kho kom haum rau cov degree hloov chaw thiab hnyav hnyav ntawm cov polymer. Cov cuab yeej no yog qhov tseem ceeb rau kev thov xws li cov tshuaj ntsiav tshuaj thiab cov khoom siv tsim kho.
3. Muaj nuj nqi:
Thickeners: HPMC feem ntau siv los ua cov tuab hauv cov zaub mov, cov tshuaj, thiab cov khoom lag luam cov khoom ntiag tug.
Zaj duab xis tsim: Nws tuaj yeem tsim cov yeeb yaj kiab thiab tuaj yeem siv rau cov ntsiav tshuaj thiab cov ntsiav tshuaj, nrog rau cov ua yeeb yaj kiab rau ntau cov ntawv thov.
Dej khaws cia: HPMC yog paub rau nws cov dej khaws cia, pab txhim kho kev ua haujlwm thiab dej hauv tsev xws li cov khoom noj ua ke.
C. Daim Ntawv Thov HPMC:
1. Yeeb tshuaj:
Ntsiav tshuaj txheej: HPMC yog siv los tsim cov ntsiav tshuaj txheej txheem los tswj cov tshuaj tso tawm thiab txhim kho kev ruaj khov.
Qhov ncauj tshuaj tau: Lub biocompatibility thiab tswj cov khoom tso tawm ntawm HPMC ua rau nws haum rau qhov ncauj lub tshuab siv tshuaj.
2.Cov kev lag luam:
Tshuaj khib thiab cov khoom siv MAAs cov khoom: HPMC tau siv nyob rau hauv cov ntaub ntawv tsim kho kom txhim kho cov dej cia, cov haujlwm ua haujlwm thiab cov nplaum.
3. Kev lag luam khoom noj:
Thickeners thiab stabilizers: HPMC yog siv los ua cov tuab thiab muaj stabilizer nyob rau hauv cov zaub mov txhawm rau txhim kho kev ntxhib los mos thiab ruaj khov.
4. Cov Khoom Siv Saib Xyuas Tus Kheej:
Daim Ntawv Qhia Txog Kev Ua Kom Zoo: HPMC tau koom rau hauv Cov Tshuaj pleev kom zoo rau nws cov yeeb yaj kiab-ua thiab thickenies cov khoom.
5.Paints thiab txheej:
Cov txheej txheem dej ntawm cov dej ntws, HPMC yog siv nyob rau hauv cov dej uas tsim los txhim kho rhuaology thiab tiv thaiv cov xim rasment.
6. Kev txiav txim siab ib puag ncig:
Thaum HPMC nws tus kheej tsis yog cov neeg biodegradable tag nrho cov polymer, nws cov keeb kwm cellulosic ua rau nws cov hluav taws xob ib puag ncig piv rau cov hluavtaws hluavtaws zoo nkauj. HPMC tuaj yeem biodegrade nyob rau hauv qee qhov kev mob, thiab nws siv nyob rau hauv cov kev mob ruaj khov thiab biodegradable formulations yog thaj chaw ntawm kev tshawb fawb txuas ntxiv.
HydroxypropylropenCellulose (HPMC) yog cov khoom siv hluav taws xob ua ntu zus semi-hluavtaws polymer muab tau los ntawm cellulose. Nws cov khoom tshwj xeeb ua rau nws muaj txiaj ntsig zoo nyob rau ntau yam kev lag luam suav nrog cov kws tshuaj, kev tsim kho, zaub mov, kev saib xyuas tus kheej thiab pleev xim. Txawm hais tias nws tsis yog daim ntawv piopolymer, nws cov cellulose los thiab biodegradation peev xwm yog nyob rau hauv txoj kab nrog kev loj hlob cov ntaub ntawv nyob rau hauv cov ntawv thov sib txawv. Kev Tshawb Fawb Ntxiv mus ntxiv mus tshawb hauv cov hau kev los txhim kho lub ib puag ncig ntawm HPMC thiab nthuav nws cov kev siv hauv cov phooj ywg ib puag ncig.
Lub sijhawm Post: Feb-07-2024