Carboxymethyl cellulose (CMC) yog cov khoom siv ntau yam polymer uas siv dav hauv cov khoom noj, tshuaj, tshuaj pleev ib ce, roj av, papermaking, textiles thiab lwm yam lag luam. Nws lub ntsiab zoo muaj xws li thickening, stabilization, ncua kev kawm ntawv, emulsification, dej tuav thiab lwm yam dej num, yog li nws yog dav siv nyob rau hauv ntau lub teb. Txawm li cas los xij, txawm hais tias nws ua tau zoo heev hauv ntau daim ntawv thov, CMC kuj muaj qee qhov tsis zoo thiab kev txwv, uas yuav txwv tsis pub siv qee lub sijhawm lossis xav tau kev ntsuas tshwj xeeb los daws cov kev tsis zoo no.
1. Txwv solubility
Lub solubility ntawm CMC nyob rau hauv dej yog ib tug yam ntxwv tseem ceeb, tab sis nyob rau hauv tej yam kev mob, lub solubility yuav raug txwv. Piv txwv li, CMC muaj cov dej solubility tsis zoo nyob rau hauv qhov chaw muaj ntsev ntau lossis cov dej hardness siab. Nyob rau hauv ib puag ncig muaj ntsev, cov electrostatic repulsion ntawm CMC molecular chains raug txo, uas ua rau muaj kev sib cuam tshuam intermolecular, uas cuam tshuam rau nws cov solubility. Qhov no yog qhov tshwj xeeb tshaj yog thaum siv hauv dej hiav txwv lossis dej uas muaj cov zaub mov loj. Tsis tas li ntawd, CMC dissolves maj mam nyob rau hauv cov dej uas tsis kub thiab tej zaum yuav siv sij hawm ntev kom yaj tag, uas yuav ua rau kom txo efficiency nyob rau hauv industrial ntau lawm.
2. Tsis zoo viscosity stability
Lub viscosity ntawm CMC yuav cuam tshuam los ntawm pH, kub, thiab ionic zog thaum siv. Nyob rau hauv acidic los yog alkaline tej yam kev mob, lub viscosity ntawm CMC tej zaum yuav txo qis heev, cuam tshuam nws thickening nyhuv. Qhov no yuav ua rau muaj kev cuam tshuam tsis zoo rau qee cov ntawv thov uas yuav tsum tau muaj viscosity ruaj khov, xws li kev ua zaub mov thiab kev npaj tshuaj. Tsis tas li ntawd, nyob rau hauv qhov kub thiab txias, qhov viscosity ntawm CMC tuaj yeem poob sai, ua rau muaj kev ua haujlwm tsawg hauv qee qhov kev siv kub.
3. Biodegradability tsis zoo
CMC yog hloov kho cellulose uas muaj qhov degradation qeeb, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig ntuj. Yog li, CMC muaj qhov tsis zoo ntawm biodegradability thiab tej zaum yuav ua rau muaj teeb meem rau ib puag ncig. Txawm hais tias CMC zoo dua ntawm biodegradation dua li qee cov khoom siv hluavtaws, nws cov txheej txheem degradation tseem siv sijhawm ntev. Hauv qee qhov kev thov rau ib puag ncig, qhov no yuav dhau los ua qhov tseem ceeb, ua rau tib neeg nrhiav lwm cov ntaub ntawv zoo ib puag ncig.
4. Tshuaj stability teeb meem
CMC tej zaum yuav tsis ruaj tsis khov nyob rau hauv tej yam tshuaj ib puag ncig, xws li muaj zog acid, muaj zog puag los yog oxidative tej yam kev mob. Kev degradation lossis tshuaj lom neeg tuaj yeem tshwm sim. Qhov kev tsis ruaj tsis khov no tuaj yeem txwv nws txoj kev siv hauv qee qhov chaw tshuaj lom neeg. Nyob rau hauv ib puag ncig oxidizing heev, CMC yuav raug oxidative degradation, yog li poob nws functionality. Tsis tas li ntawd, hauv qee qhov kev daws teeb meem uas muaj hlau ions, CMC tuaj yeem koom tes nrog cov hlau ions, cuam tshuam rau nws cov solubility thiab stability.
5. Tus nqi siab
Txawm hais tias CMC yog cov khoom siv nrog kev ua tau zoo, nws cov nqi tsim khoom kuj yog siab, tshwj xeeb tshaj yog CMC cov khoom uas muaj purity siab lossis cov haujlwm tshwj xeeb. Yog li ntawd, nyob rau hauv ib co nqi-sensitive daim ntawv thov, kev siv CMC tej zaum yuav tsis muaj kev lag luam. Qhov no yuav ua rau cov tuam txhab xav txog lwm yam kev siv nyiaj ntau dua thaum xaiv cov thickeners lossis stabilizers, txawm hais tias cov kev xaiv no yuav tsis zoo li CMC hauv kev ua haujlwm.
6. Tej zaum yuav muaj by-products nyob rau hauv cov txheej txheem ntau lawm
Cov txheej txheem tsim khoom ntawm CMC suav nrog kev hloov kho tshuaj ntawm cellulose, uas tuaj yeem tsim qee cov khoom lag luam, xws li sodium chloride, sodium carboxylic acid thiab lwm yam. Tsis tas li ntawd, cov tshuaj reagents siv nyob rau hauv cov txheej txheem tsim khoom yuav muaj kev cuam tshuam tsis zoo rau ib puag ncig yog tias lawv tsis ua haujlwm zoo. Yog li ntawd, txawm hais tias CMC nws tus kheej muaj ntau yam zoo heev, ib puag ncig thiab kev noj qab haus huv cuam tshuam ntawm nws cov txheej txheem tsim khoom kuj yog ib qho uas yuav tsum tau xav txog.
7. Tsawg biocompatibility
Txawm hais tias CMC tau siv dav hauv tshuaj thiab tshuaj pleev ib ce thiab muaj biocompatibility zoo, nws cov biocompatibility tseem yuav tsis txaus rau qee qhov kev siv. Piv txwv li, qee zaum, CMC tuaj yeem ua rau khaus khaus khaus khaus lossis ua xua, tshwj xeeb tshaj yog thaum siv cov khoom siv siab lossis lub sijhawm ntev. Tsis tas li ntawd, cov metabolism thiab tshem tawm CMC hauv lub cev yuav siv sij hawm ntev, uas tej zaum yuav tsis zoo rau qee qhov kev xa tshuaj.
8. Cov khoom siv tsis zoo
Raws li cov thickener thiab stabilizer, CMC muaj cov neeg kho tshuab tsis tshua muaj zog, uas tej zaum yuav yog ib qho kev txwv ntawm qee cov ntaub ntawv uas yuav tsum tau muaj zog los yog siab elasticity. Piv txwv li, nyob rau hauv ib co textiles los yog composite cov ntaub ntawv uas yuav tsum tau muaj zog, daim ntawv thov ntawm CMC tej zaum yuav raug txwv los yog nws yuav tsum tau siv nyob rau hauv ua ke nrog rau lwm cov ntaub ntawv los txhim kho nws cov khoom siv kho tshuab.
Raws li cov khoom siv dav siv ntau yam, carboxymethyl cellulose (CMC) muaj ntau yam zoo, tab sis nws qhov tsis zoo thiab kev txwv tsis tuaj yeem tsis quav ntsej. Thaum siv CMC, yam xws li nws cov solubility, viscosity stability, tshuaj stability, ib puag ncig tej yam kev mob thiab tus nqi yuav tsum tau ua tib zoo txiav txim siab raws li ib tug tshwj xeeb daim ntawv thov scenario. Tsis tas li ntawd, kev tshawb fawb thiab kev txhim kho yav tom ntej tuaj yeem txhim kho kev ua tau zoo ntawm CMC thiab kov yeej nws cov kev tsis txaus siab uas twb muaj lawm, yog li nthuav nws cov peev txheej hauv ntau qhov chaw.
Post lub sij hawm: Aug-23-2024