Cov yam ntxwv cuam tshuam rau tus cwj pwm ntawm Carboxymethyl Cellulose (CMC) Solutions

Carboxymethyl cellulose (CMC) yog cov dej-soluble polymer muab los ntawm cellulose uas muaj ntau yam kev siv hauv ntau yam lag luam, suav nrog zaub mov, tshuaj, tshuaj pleev ib ce, thiab ntawv. Tus cwj pwm ntawm CMC cov kev daws teeb meem tuaj yeem cuam tshuam los ntawm ntau yam, suav nrog cov concentration, molecular hnyav, qib kev hloov pauv, pH, kub, thiab kev sib xyaw ua ke. Kev nkag siab txog cov xwm txheej no yog qhov tseem ceeb rau kev ua kom zoo dua ntawm CMC hauv ntau daim ntawv thov. Hauv tsab xov xwm no, peb yuav tham txog cov ntsiab lus tseem ceeb uas cuam tshuam rau tus cwj pwm ntawm CMC kev daws teeb meem.

Nco ntsoov

Qhov concentration ntawm CMC hauv kev daws teeb meem tuaj yeem cuam tshuam rau nws tus cwj pwm. Raws li qhov concentration ntawm CMC nce, lub viscosity ntawm cov tshuaj kuj nce, ua rau nws viscous ntau thiab tsawg flowable. Cov cuab yeej no ua rau cov ntsiab lus siab CMC tsim nyog rau cov ntawv thov uas xav tau cov nyhuv thickening lossis gelling, xws li hauv cov khoom noj thiab tshuaj pleev ib ce.

Molecular Luj

Qhov hnyav molecular ntawm CMC yog lwm qhov tseem ceeb uas tuaj yeem cuam tshuam rau nws tus cwj pwm. Qhov hnyav dua molecular CMC nyhav kom muaj cov yeeb yaj kiab zoo dua thiab ua haujlwm zoo dua ntawm kev txhim kho cov khoom rheological ntawm cov tshuaj. Nws kuj muab cov dej tuav tau zoo dua qub thiab txhim kho cov khoom sib khi ntawm cov tshuaj. Txawm li cas los xij, qhov hnyav molecular CMC yuav nyuaj rau yaj, ua rau nws tsis haum rau qee yam kev siv.

Degree ntawm Hloov

Qhov degree ntawm kev hloov pauv (DS) ntawm CMC yog hais txog qib ntawm carboxymethylation ntawm cellulose qaum. Nws tuaj yeem cuam tshuam rau tus cwj pwm ntawm CMC cov kev daws teeb meem. Ib qho DS siab dua ua rau muaj kev solubility ntau dua thiab muaj peev xwm khaws cov dej zoo dua ntawm cov tshuaj, ua rau nws tsim nyog rau cov ntawv thov uas yuav tsum tau muaj peev xwm tuav dej siab, xws li hauv cov khoom noj thiab tshuaj. Txawm li cas los xij, siab DS CMC kuj tuaj yeem ua rau muaj viscosity ntxiv, uas tuaj yeem txwv nws daim ntawv thov hauv qee cov txheej txheem.

pH

Cov pH ntawm cov tshuaj CMC kuj tuaj yeem cuam tshuam rau nws tus cwj pwm. CMC feem ntau ruaj khov nyob rau hauv nruab nrab rau alkaline pH ntau, thiab viscosity ntawm cov tshuaj yog siab tshaj ntawm pH ntawm 7-10. Thaum qis pH, cov solubility ntawm CMC txo, thiab cov viscosity ntawm cov tshuaj txo thiab. Tus cwj pwm ntawm CMC cov kev daws teeb meem kuj tseem ceeb rau cov kev hloov pauv hauv pH, uas tuaj yeem cuam tshuam rau solubility, viscosity, thiab gelation zog ntawm cov tshuaj.

Kub

Qhov kub ntawm cov tshuaj CMC kuj tuaj yeem cuam tshuam nws tus cwj pwm. Kev solubility ntawm CMC nce nrog qhov kub thiab txias, thiab qhov kub siab dua tuaj yeem ua rau muaj viscosity ntau dua thiab muaj peev xwm khaws dej zoo dua. Txawm li cas los xij, qhov kub thiab txias kuj tuaj yeem ua rau cov tshuaj gel, ua rau nws nyuaj rau kev ua haujlwm nrog. Lub gelation kub ntawm CMC nyob ntawm ntau yam, nrog rau cov concentration, molecular hnyav, thiab degree ntawm kev hloov.

Kev sib xyaw ua ke

Kev sib xyaw ntawm cov tshuaj CMC kuj tuaj yeem cuam tshuam rau nws tus cwj pwm. Qhov ceev, ntev, thiab kub ntawm qhov sib tov tuaj yeem cuam tshuam rau kev solubility, viscosity, thiab gelation zog ntawm cov tshuaj. Kev sib xyaw kom nrawm dua thiab qhov kub thiab txias tuaj yeem ua rau muaj viscosity ntau dua thiab muaj peev xwm tuav tau dej zoo dua, thaum lub sijhawm sib xyaw ua ke ntev tuaj yeem ua rau muaj kev sib cais zoo dua thiab sib xws ntawm cov tshuaj. Txawm li cas los xij, kev sib xyaw ntau dhau kuj tuaj yeem ua rau cov tshuaj gel, ua rau nws nyuaj rau kev ua haujlwm nrog.

Xaus

Tus cwj pwm ntawm CMC cov kev daws teeb meem yog cuam tshuam los ntawm ntau yam, suav nrog cov concentration, molecular hnyav, qib ntawm kev hloov pauv, pH, kub, thiab kev sib xyaw ua ke. Kev nkag siab txog cov xwm txheej no yog qhov tseem ceeb rau kev ua kom zoo dua ntawm CMC hauv ntau daim ntawv thov. Los ntawm kev tswj hwm cov xwm txheej no, nws tuaj yeem hloov kho tus cwj pwm ntawm CMC cov kev daws teeb meem kom ua tau raws li cov kev cai tshwj xeeb ntawm cov ntawv thov sib txawv, xws li thickening, gelling, khi, lossis dej tuav.