Cov tshuaj txhuam hniav yog ib yam khoom siv kho qhov ncauj uas tseem ceeb hauv peb lub neej txhua hnub. Txhawm rau kom ntseeg tau tias cov tshuaj txhuam hniav tuaj yeem ntxuav cov hniav zoo thaum siv thaum tswj cov neeg siv khoom zoo, cov tuam txhab tau ntxiv ntau cov khoom xyaw sib txawv rau cov tshuaj txhuam hniav. Sodium Carboxymethyl Cellulose (CMC) yog ib qho ntawm lawv.
1. Lub luag hauj lwm ntawm thickener
Ua ntej ntawm tag nrho cov, lub luag hauj lwm tseem ceeb ntawm CMC nyob rau hauv cov tshuaj txhuam hniav yog raws li ib tug thickener. Cov tshuaj txhuam hniav yuav tsum muaj qhov tsim nyog sib xws kom nws yooj yim nyem tawm thiab sib npaug rau cov txhuam hniav. Yog tias cov tshuaj txhuam hniav nyias dhau, nws yuav yooj yim plam tawm ntawm cov txhuam hniav thiab cuam tshuam rau nws txoj kev siv; yog tias nws tuab heev, nws yuav nyuaj rau nyem tawm thiab yuav tsis xis nyob thaum siv lub qhov ncauj. CMC tuaj yeem muab cov tshuaj txhuam hniav kom zoo viscosity los ntawm nws cov khoom thickening zoo heev, ua kom yooj yim rau kev khiav lag luam thaum siv, thiab tuaj yeem nyob ntawm qhov chaw ntawm cov hniav thaum txhuam hniav kom ntseeg tau cov nyhuv tu.
2. Lub luag haujlwm ntawm stabilizer
Qhov thib ob, CMC kuj muaj lub luag haujlwm ntawm kev ruaj ntseg. Cov khoom xyaw hauv cov tshuaj txhuam hniav feem ntau muaj xws li dej, abrasives, detergents, wetting agents, thiab lwm yam. Yog hais tias cov khoom xyaw no tsis ruaj tsis khov, lawv yuav stratify los yog precipitate, ua rau cov tshuaj txhuam hniav poob uniformity, yog li cuam tshuam rau kev siv thiab cov khoom zoo. CMC tuaj yeem tswj xyuas qhov sib txawv ntawm cov khoom xyaw tshuaj txhuam hniav, tiv thaiv kev sib cais thiab kev sib cais ntawm cov khoom xyaw, thiab ua kom zoo nkauj thiab kev ua tau zoo ntawm cov tshuaj txhuam hniav zoo ib yam nyob rau lub sijhawm ntev.
3. Txhim kho kev ntxhib los mos thiab saj
CMC kuj tseem tuaj yeem txhim kho qhov kev ntxhib los mos thiab saj ntawm cov tshuaj txhuam hniav. Thaum txhuam hniav, cov tshuaj txhuam hniav sib xyaw nrog cov qaub ncaug hauv lub qhov ncauj los tsim cov tshuaj txhuam hniav uas npog cov hniav thiab pab tshem tawm cov stains thiab cov khoom seem ntawm cov hniav. Kev siv CMC ua rau qhov muab tshuaj txhuam no smoother thiab zoo ib yam, txhim kho kev nplij siab thiab tu cov nyhuv ntawm txhuam. Tsis tas li ntawd, CMC kuj tseem tuaj yeem pab txo qis qhov qhuav thaum siv cov tshuaj txhuam hniav, ua rau cov neeg siv tau txais kev zoo siab thiab zoo siab.
4. cuam tshuam rau biocompatibility
CMC yog cov khoom siv nrog biocompatibility zoo thiab yuav tsis ua rau cov ntaub so ntswg ntawm qhov ncauj, yog li nws muaj kev nyab xeeb rau kev siv tshuaj txhuam hniav. CMC muaj cov qauv molecular zoo ib yam li cov nroj tsuag cellulose thiab tuaj yeem ua rau qee qhov degraded hauv cov hnyuv, tab sis nws tsis yog absorbed los ntawm tib neeg lub cev, uas txhais tau hais tias nws tsis muaj teeb meem rau tib neeg lub cev. Tsis tas li ntawd, tus nqi ntawm CMC siv yog tsawg, feem ntau tsuas yog 1-2% ntawm tag nrho qhov hnyav ntawm cov tshuaj txhuam hniav, yog li qhov cuam tshuam rau kev noj qab haus huv yog negligible.
5. Synergy nrog lwm cov khoom xyaw
Nyob rau hauv cov tshuaj txhuam hniav formulations, CMC feem ntau ua hauj lwm nyob rau hauv synergy nrog rau lwm cov khoom xyaw los txhim kho nws cov hauj lwm. Piv txwv li, CMC tuaj yeem siv nrog cov khoom ntub dej (xws li glycerin lossis propylene glycol) los tiv thaiv cov tshuaj txhuam hniav kom qhuav, thaum tseem txhim kho lubricity thiab dispersibility ntawm cov tshuaj txhuam hniav. Tsis tas li ntawd, CMC tseem tuaj yeem ua haujlwm nrog cov surfactants (xws li sodium lauryl sulfate) los pab tsim ua npuas ncauj zoo dua, ua kom yooj yim rau cov tshuaj txhuam hniav los npog cov hniav thaum txhuam hniav thiab txhim kho cov nyhuv tu.
6. Kev hloov pauv thiab kev tiv thaiv ib puag ncig
Txawm hais tias CMC yog siv dav siv cov thickener thiab stabilizer hauv cov tshuaj txhuam hniav, nyob rau xyoo tas los no, nrog kev txhim kho ntawm ib puag ncig kev paub thiab kev nrhiav cov khoom xyaw ntuj, qee cov tuam txhab tau pib tshawb nrhiav kev siv cov khoom siv los hloov CMC. Piv txwv li, qee cov pos hniav ntuj (xws li cov pos hniav guar) kuj muaj cov nyhuv thickening thiab stabilizing zoo sib xws, thiab qhov chaw muaj kev ruaj ntseg dua. Txawm li cas los xij, CMC tseem tseem tuav txoj haujlwm tseem ceeb hauv kev tsim cov tshuaj txhuam hniav vim nws qhov kev ua haujlwm ruaj khov, tus nqi qis thiab siv dav.
Kev siv CMC hauv tshuaj txhuam hniav yog ntau yam. Nws tuaj yeem tsis tsuas yog kho qhov sib xws thiab ruaj khov ntawm cov tshuaj txhuam hniav, tab sis kuj txhim kho kev ntxhib los mos thiab siv cov kev paub ntawm cov tshuaj txhuam hniav. Txawm hais tias lwm yam khoom siv tau tshwm sim, CMC tseem ua lub luag haujlwm tseem ceeb hauv kev tsim cov tshuaj txhuam hniav nrog nws cov khoom tshwj xeeb thiab qhov zoo. Txawm hais tias nyob rau hauv cov qauv tshuaj los yog hauv kev tshawb fawb thiab kev tsim cov tshuaj txhuam hniav niaj hnub ib puag ncig, CMC muab kev lees paub tseem ceeb rau qhov zoo thiab cov neeg siv kev paub ntawm cov tshuaj txhuam hniav.
Post lub sij hawm: Aug-13-2024