Polyanionic Cellulose (PAC) thiab Sodium Carboxymethyl Cellulose (CMC)

Polyanionic cellulose (PAC) thiab sodium carboxymethyl cellulose (CMC) yog ob qho tib si cellulose derivatives siv dav hauv ntau yam lag luam rau lawv cov khoom thickening, stabilizing, thiab rheological. Txawm hais tias lawv muaj qee qhov zoo sib xws, lawv kuj muaj qhov sib txawv ntawm cov qauv tshuaj lom neeg, cov khoom, thiab kev siv. Nov yog kev sib piv ntawm PAC thiab CMC:

1. Cov Qauv Tshuaj:
   • PAC: Polyanionic cellulose yog cov polymer yaj hauv dej uas tau los ntawm cellulose los ntawm kev qhia txog carboxymethyl thiab lwm cov pab pawg anionic rau ntawm cellulose backbone. Nws muaj ntau pawg carboxyl (-COO-) raws cov saw cellulose, ua rau nws muaj anionic heev.
   • CMC: Sodium carboxymethyl cellulose kuj yog ib qho polymer uas yaj tau hauv dej los ntawm cellulose, tab sis nws dhau los ntawm cov txheej txheem carboxymethylation tshwj xeeb, ua rau muaj kev hloov pauv ntawm cov pab pawg hydroxyl (-OH) nrog cov pab pawg carboxymethyl (-CH2COONa). CMC feem ntau muaj cov pab pawg carboxyl tsawg dua piv rau PAC.
2. Xwm txheej Ionic:
   • PAC: Polyanionic cellulose yog anionic heev vim muaj ntau pawg carboxyl raws cov saw cellulose. Nws muaj cov khoom pauv ion muaj zog thiab feem ntau siv ua tus neeg sawv cev tswj kev lim dej thiab rheology modifier hauv cov kua dej drilling.
   • CMC: Sodium carboxymethyl cellulose kuj yog anionic, tab sis nws qib ntawm anionicity nyob ntawm qib ntawm kev hloov pauv (DS) ntawm carboxymethyl pawg. CMC feem ntau yog siv ua cov khoom siv tuab, stabilizer, thiab viscosity modifier hauv ntau yam kev siv, suav nrog zaub mov, tshuaj, thiab cov khoom siv tu tus kheej.
3. Viscosity thiab Rheology:
   • PAC: Polyanionic cellulose qhia txog kev ua haujlwm siab thiab kev ua kom nyias nyias hauv cov kua, ua rau nws ua haujlwm tau zoo ua tus thickener thiab rheology modifier hauv cov kua drilling thiab lwm yam kev siv hauv kev lag luam. PAC tuaj yeem tiv taus qhov kub siab thiab cov dej ntsev uas ntsib hauv kev ua haujlwm hauv cov roj av.
   • CMC: Sodium carboxymethyl cellulose kuj qhia txog viscosity thiab rheology modification properties, tab sis nws cov viscosity feem ntau qis dua piv rau PAC. CMC tsim cov kev daws teeb meem ruaj khov thiab pseudoplastic, ua rau nws haum rau ntau yam kev siv, suav nrog zaub mov, tshuaj pleev ib ce, thiab tshuaj.
4. Cov ntawv thov:
   • PAC: Polyanionic cellulose feem ntau yog siv rau hauv kev lag luam roj thiab roj av ua tus neeg sawv cev tswj kev lim dej, rheology modifier, thiab txo cov kua dej poob hauv cov kua drilling. Nws kuj tseem siv rau hauv lwm yam kev siv hauv kev lag luam xws li cov ntaub ntawv tsim kho thiab kev kho ib puag ncig.
   • CMC: Sodium carboxymethyl cellulose muaj ntau yam kev siv hauv ntau yam lag luam, suav nrog cov khoom noj thiab dej haus (ua ib qho thickener thiab stabilizer), tshuaj (ua ib qho binder thiab disintegrant), cov khoom siv tu tus kheej (ua ib qho rheology modifier), textiles (ua ib tug sizing agent), thiab daim ntawv manufacturing (ua ib daim ntawv additive).

thaum ob qho tib si polyanionic cellulose (PAC) thiab sodium carboxymethyl cellulose (CMC) yog cellulose derivatives nrog anionic cov khoom thiab cov ntawv thov zoo sib xws hauv qee qhov kev lag luam, lawv muaj qhov sib txawv ntawm cov qauv tshuaj lom neeg, cov khoom, thiab cov ntawv thov tshwj xeeb. PAC feem ntau yog siv hauv kev lag luam roj thiab roj, thaum CMC pom cov ntawv thov dav hauv zaub mov, tshuaj, kev saib xyuas tus kheej, textiles, thiab lwm yam kev lag luam.