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

I-Polyanionic cellulose (PAC) kunye ne-sodium carboxymethyl cellulose (CMC) zombini ziphuma kwi-cellulose ezisetyenziswa ngokubanzi kumashishini awohlukeneyo ukutyeba, ukuzinzisa, kunye neempawu zerheological. Ngelixa babelana ngokufana okuthile, bakwanazo umahluko ocacileyo malunga nokwakheka kweekhemikhali, iipropathi, kunye nokusetyenziswa. Nalu uthelekiso phakathi kwePAC kunye neCMC:

1. Ulwakhiwo lweMichiza:
   • I-PAC: I-Polyanionic cellulose i-polymer e-soluble yamanzi ephuma kwi-cellulose ngokusungulwa kwe-carboxymethyl kunye namanye amaqela e-anionic kwi-backbone ye-cellulose. Iqulethe amaqela amaninzi e-carboxyl (-COO-) ecaleni kwekhonkco le-cellulose, iyenza ibe yi-anionic kakhulu.
   • I-CMC: I-Sodium carboxymethyl cellulose nayo i-polymer e-soluble yamanzi ephuma kwi-cellulose, kodwa idlula inkqubo ethile ye-carboxymethylation, ebangela ukutshintshwa kwamaqela e-hydroxyl (-OH) kunye namaqela e-carboxymethyl (-CH2COONa). I-CMC ihlala inamaqela ambalwa e-carboxyl xa kuthelekiswa nePAC.
2. Ubume be-Ionic:
   • I-PAC: I-Polyanionic cellulose ine-anionic kakhulu ngenxa yobukho bamaqela amaninzi e-carboxyl ecaleni kwekhonkco leselulosi. Ibonisa iipropati eziqinileyo ze-ion-exchange kwaye zihlala zisetyenziswa njenge-arhente yokulawula ukuhluza kunye ne-rheology modifier kumanzi okugaya asekelwe emanzini.
   • I-CMC: I-sodium carboxymethyl cellulose ikwayi-anionic, kodwa iqondo layo le-anionicity lixhomekeke kwiqondo lokutshintshwa (DS) kwamaqela e-carboxymethyl. I-CMC iqhele ukusetyenziswa njenge-thickener, stabilizer, kunye ne-viscosity modifier kwizicelo ezahlukeneyo, kubandakanya ukutya, amayeza, kunye neemveliso zokhathalelo lomntu.
3. Viscosity kunye neRheology:
   • I-PAC: I-Polyanionic cellulose ibonisa i-viscosity ephezulu kunye nokuziphatha kwe-shear-thinning kwisisombululo, okwenza ukuba isebenze njenge-thickener kunye ne-rheology modifier kwi-drilling fluids kunye nezinye izicelo zoshishino. I-PAC inokumelana nobushushu obuphezulu kunye namanqanaba etyuwa adityaniswe nemisebenzi ye-oyile.
   • I-CMC: I-sodium carboxymethyl cellulose ikwabonisa i-viscosity kunye neempawu zokuguqulwa kwe-rheology, kodwa i-viscosity yayo isezantsi xa ithelekiswa ne-PAC. I-CMC yenza izisombululo ezizinzile kunye ne-pseudoplastic, iyenza ilungele uluhlu olubanzi lwezicelo, kubandakanya ukutya, izinto zokuthambisa, kunye namayeza.
4. Usetyenziso:
   • I-PAC: I-cellulose ye-Polyanionic isetyenziswe ngokuyinhloko kwi-oyile kunye negesi yegesi njenge-agent yokulawula ukuhluza, i-rheology modifier, kunye nokunciphisa ukulahleka kwamanzi kwi-drilling fluids. Ikwasetyenziswa kwezinye izicelo zoshishino ezifana nezixhobo zokwakha kunye nokulungiswa kokusingqongileyo.
   • I-CMC: I-sodium carboxymethyl cellulose inezicelo ezahlukeneyo kumashishini ahlukeneyo, kuquka ukutya kunye neziselo (njenge-thickener kunye ne-stabilizer), amayeza (njenge-binder kunye ne-disintegrant), iimveliso zokhathalelo lomntu (njenge-rheology modifier), amalaphu (njenge-arhente yokulinganisa) , kunye nokuveliswa kwephepha (njengesongezo sephepha).

ngelixa zombini i-polyanionic cellulose (PAC) kunye ne-sodium carboxymethyl cellulose (i-CMC) ziyi-derivatives ze-cellulose ezineempawu ze-anionic kunye nezicelo ezifanayo kwamanye amashishini, zineeyantlukwano ezicacileyo malunga nokwakheka kweekhemikhali, iipropati kunye nezicelo ezithile. I-PAC isetyenziswa ikakhulu kushishino lwe-oyile negesi, ngelixa i-CMC ifumana izicelo ezibanzi ekutyeni, kumayeza, kukhathalelo lomntu, amalaphu, nakwamanye amashishini.