Focus on Cellulose ethers

Polyanionic Cellulose (PAC) kunye neSodium Carboxymethyl Cellulose (CMC)

Polyanionic Cellulose (PAC) kunye neSodium Carboxymethyl Cellulose (CMC)

I-Polyanionic cellulose (PAC) kunye ne-sodium carboxymethyl cellulose (CMC) zimbini iintlobo ze-cellulose ethers ezinezakhiwo zeekhemikhali ezifanayo kunye neempawu, kodwa zihluke kwezinye iinkalo eziphambili.

I-PAC i-ether ye-cellulose e-soluble yamanzi enezinga eliphezulu lokutshintshwa, oku kuthetha ukuba inani elikhulu lamaqela e-carboxymethyl afakwe kwi-backbone ye-cellulose. I-PAC iqhele ukusetyenziswa njenge-viscosifier kunye nokunciphisa ilahleko yolwelo kulwelo lwe-oyile yokomba ngenxa yogcino lwamanzi olugqwesileyo, uzinzo, kunye neempawu zokujiya.

I-CMC, kwelinye icala, yi-ether eselulosi enyibilikayo emanzini esetyenziswa ngokubanzi njenge-thickener, i-binder, kunye nokuzinzisa kumashishini ahlukeneyo, kubandakanya ukutya, amayeza, izinto zokuthambisa, kunye nemveliso yephepha. I-CMC iveliswa kukusabela kwe-cellulose nge-monochloroacetic acid ukwazisa amaqela e-carboxymethyl kumqolo we-cellulose. Iqondo lokutshintshwa kwe-CMC lisezantsi kunelo le-PAC, kodwa isabonelela ngogcino lwamanzi olulungileyo, uzinzo, kunye neepropati ezityebileyo.

Nangona zombini i-PAC kunye ne-CMC zi-ether ze-cellulose ezineepropati ezifanayo, ziyahluka kwezinye iinkalo eziphambili. Umzekelo, iPAC idla ngokusetyenziswa kushishino lokomba ioyile ngenxa yenqanaba eliphezulu lokutshintsha kunye neempawu ezibalaseleyo zokunciphisa ilahleko yolwelo, ngelixa iCMC isetyenziswa kuluhlu olubanzi lwamashishini ngenxa yenqanaba elisezantsi lokutshintsha kunye nokuguquguquka kwizicelo ezahlukeneyo.

Ngokubanzi, i-PAC kunye ne-CMC zombini zi-ethers ze-cellulose ezibalulekileyo ezineempawu ezizodwa kunye nokusetyenziswa. Ngelixa iPAC isetyenziswa ikakhulu kushishino lokomba ioyile, iCMC inoluhlu olubanzi lwezicelo kumashishini ahlukeneyo ngenxa yokuguquguquka kwayo kunye nenqanaba elisezantsi lokutshintsha.


Ixesha lokuposa: Mar-21-2023
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