Tshuaj txhuam hniav yog ib yam khoom siv kho hniav uas tseem ceeb heev hauv peb lub neej txhua hnub. Yuav kom paub tseeb tias cov tshuaj txhuam hniav tuaj yeem ntxuav cov hniav tau zoo thaum siv thiab tseem ua kom muaj kev paub zoo rau tus neeg siv, cov chaw tsim khoom tau ntxiv ntau yam khoom xyaw sib txawv rau hauv cov mis ntawm cov tshuaj txhuam hniav. Sodium Carboxymethyl Cellulose (CMC) yog ib qho ntawm lawv.
1. Lub luag haujlwm ntawm cov khoom ua kom tuab
Ua ntej tshaj plaws, lub luag haujlwm tseem ceeb ntawm CMC hauv cov tshuaj txhuam hniav yog ua kom tuab. Cov tshuaj txhuam hniav yuav tsum muaj qhov sib xws kom yooj yim rau nws kom yooj yim nias tawm thiab siv rau ntawm txhuam hniav. Yog tias cov tshuaj txhuam hniav nyias dhau, nws yuav yooj yim plam tawm ntawm txhuam hniav thiab cuam tshuam rau nws siv; yog tias nws tuab dhau, nws yuav nyuaj rau nias tawm thiab yuav tsis xis nyob thaum siv hauv qhov ncauj. CMC tuaj yeem muab cov tshuaj txhuam hniav kom raug los ntawm nws cov khoom zoo heev uas ua rau tuab, ua rau nws yooj yim rau kev siv thaum siv, thiab tuaj yeem nyob ntawm qhov chaw ntawm cov hniav thaum txhuam hniav kom ntseeg tau tias muaj txiaj ntsig ntxuav.
2. Lub luag haujlwm ntawm stabilizer
Qhov thib ob, CMC kuj muaj lub luag haujlwm ua tus stabilizer. Cov khoom xyaw hauv cov tshuaj txhuam hniav feem ntau muaj dej, cov khoom siv abrasives, cov tshuaj ntxuav tes, cov neeg ua kom ntub, thiab lwm yam. Yog tias cov khoom xyaw no tsis ruaj khov, lawv yuav tawg ua tej daim me me lossis ua rau cov tshuaj txhuam hniav poob qhov sib xws, yog li cuam tshuam rau kev siv thiab qhov zoo ntawm cov khoom. CMC tuaj yeem tswj tau qhov sib faib ntawm cov khoom xyaw tshuaj txhuam hniav, tiv thaiv kev sib cais thiab kev sib xyaw ntawm cov khoom xyaw, thiab khaws cov qauv thiab kev ua haujlwm ntawm cov tshuaj txhuam hniav kom sib xws thaum lub sijhawm khaws cia ntev.
3. Txhim kho cov qauv thiab saj
CMC kuj tseem tuaj yeem txhim kho qhov saj thiab cov qauv ntawm cov tshuaj txhuam hniav. Thaum txhuam hniav, cov tshuaj txhuam hniav sib xyaw nrog cov qaub ncaug hauv qhov ncauj kom ua cov nplaum mos mos uas npog cov hniav thiab pab tshem tawm cov xim av thiab cov khoom noj seem ntawm cov hniav. Kev siv CMC ua rau cov nplaum no du thiab sib npaug dua, txhim kho qhov xis nyob thiab ntxuav ntawm kev txhuam hniav. Tsis tas li ntawd, CMC kuj tseem tuaj yeem pab txo qhov qhuav thaum siv cov tshuaj txhuam hniav, ua rau cov neeg siv xav tias tshiab dua thiab zoo siab dua.
4. Kev cuam tshuam rau biocompatibility
CMC yog ib yam khoom uas muaj kev sib haum xeeb zoo thiab yuav tsis ua rau cov nqaij hauv qhov ncauj khaus, yog li nws muaj kev nyab xeeb siv rau hauv cov tshuaj txhuam hniav. CMC muaj cov qauv molecular zoo ib yam li cov nroj tsuag cellulose thiab tuaj yeem lwj ib feem hauv txoj hnyuv, tab sis nws tsis raug nqus tag nrho los ntawm lub cev tib neeg, uas txhais tau tias nws tsis muaj teeb meem rau tib neeg lub cev. Tsis tas li ntawd, qhov ntau 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 qhov tsis tseem ceeb.
5. Kev sib koom tes nrog lwm cov khoom xyaw
Hauv cov tshuaj txhuam hniav, CMC feem ntau ua haujlwm ua ke nrog lwm cov khoom xyaw los txhim kho nws txoj haujlwm. Piv txwv li, CMC tuaj yeem siv nrog cov neeg sawv cev ntub (xws li glycerin lossis propylene glycol) los tiv thaiv cov tshuaj txhuam hniav kom tsis txhob qhuav, thaum tseem txhim kho qhov lubricity thiab dispersibility ntawm cov tshuaj txhuam hniav. Tsis tas li ntawd, CMC kuj tseem tuaj yeem ua haujlwm ua ke nrog surfactants (xws li sodium lauryl sulfate) los pab tsim cov ua npuas ncauj zoo dua, ua rau nws yooj yim dua rau cov tshuaj txhuam hniav los npog cov hniav thaum txhuam thiab txhim kho cov nyhuv ntxuav.
6. Kev hloov pauv tau thiab kev tiv thaiv ib puag ncig
Txawm hais tias CMC yog ib qho khoom siv thickener thiab stabilizer hauv cov tshuaj txhuam hniav uas siv dav dav, nyob rau xyoo tas los no, nrog kev txhim kho ntawm kev paub txog ib puag ncig thiab kev nrhiav cov khoom xyaw ntuj, qee cov chaw tsim khoom tau pib tshawb nrhiav kev siv cov khoom siv lwm yam los hloov CMC. Piv txwv li, qee cov pos hniav ntuj (xws li guar gum) kuj muaj cov teebmeem thickening thiab stabilizing zoo sib xws, thiab qhov chaw muaj kev ruaj khov dua. Txawm li cas los xij, CMC tseem txuas ntxiv mus nyob hauv txoj haujlwm tseem ceeb hauv kev tsim cov tshuaj txhuam hniav vim nws qhov kev ua tau zoo ruaj khov, tus nqi qis thiab kev siv dav.
Kev siv CMC hauv cov tshuaj txhuam hniav muaj ntau yam. Nws tsis yog tsuas yog kho qhov sib xws thiab ruaj khov ntawm cov tshuaj txhuam hniav xwb, tab sis kuj txhim kho cov qauv thiab kev siv ntawm cov tshuaj txhuam hniav. Txawm hais tias muaj lwm cov ntaub ntawv hloov pauv 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 cov txiaj ntsig. Txawm hais tias nyob rau hauv cov mis ib txwm muaj lossis hauv kev tshawb fawb thiab kev txhim kho cov tshuaj txhuam hniav niaj hnub uas tsis muaj kuab paug, CMC muab cov lus lees paub tseem ceeb rau qhov zoo thiab kev paub ntawm cov tshuaj txhuam hniav.
Lub sijhawm tshaj tawm: Lub Yim Hli-13-2024