I-Polyanionic Cellulose (PAC) kunye ne-Sodium Carboxymethyl Cellulose (CMC)

I-Polyanionic cellulose (PAC) kunye ne-sodium carboxymethyl cellulose (CMC) zombini zizinto ezisetyenziswa kakhulu kwimizi-mveliso eyahlukeneyo ukuze ziqine, zizinze, kwaye zibe neempawu ze-rheological. Nangona zifana, zikwanomahluko owahlukileyo ngokwesakhiwo seekhemikhali, iimpawu kunye nokusetyenziswa kwazo. Nantsi intelekelelo phakathi kwe-PAC kunye ne-CMC:

1. Ulwakhiwo lweKhemikhali:
   • I-PAC: I-polyanionic cellulose yi-polymer enyibilikayo emanzini ephuma kwi-cellulose ngokungenisa i-carboxymethyl kunye namanye amaqela e-anionic kwi-cellulose backbone. Iqulethe amaqela amaninzi e-carboxyl (-COO-) ecaleni kwe-cellulose chain, nto leyo eyenza ukuba ibe yi-anionic kakhulu.
   • I-CMC: I-sodium carboxymethyl cellulose ikwayi-polymer enyibilikayo emanzini ephuma kwi-cellulose, kodwa idlula kwinkqubo ethile ye-carboxymethylation, nto leyo ebangela ukuba amaqela e-hydroxyl (-OH) atshintshwe ngamaqela e-carboxymethyl (-CH2COONa). I-CMC idla ngokuba namaqela e-carboxyl ambalwa xa kuthelekiswa ne-PAC.
2. Indalo ye-Ionic:
   • I-PAC: I-polyanionic cellulose i-anionic kakhulu ngenxa yokubakho kwamaqela amaninzi e-carboxyl ecaleni kwe-cellulose chain. Ibonisa iipropati ezinamandla zokutshintshiselana nge-ion kwaye isetyenziswa rhoqo njenge-arhente yokulawula ukucoca kunye nokuguqula i-rheology kulwelo lokubhola olusekelwe emanzini.
   • I-CMC: I-sodium carboxymethyl cellulose nayo i-anionic, kodwa inqanaba layo le-anionicity lixhomekeke kwinqanaba lokutshintshwa (DS) kwamaqela e-carboxymethyl. I-CMC isetyenziswa rhoqo njengesithambisi-zinzisi, isizinzisi, kunye nesiguquli se-viscosity kwizicelo ezahlukeneyo, kubandakanya ukutya, amayeza, kunye neemveliso zokhathalelo lomntu.
3. Ukuqina kunye neRheology:
   • I-PAC: I-polyanionic cellulose ibonisa i-viscosity ephezulu kunye nokuziphatha kokunciphisa ukucheba kwisisombululo, okwenza ukuba isebenze njengesithambisi-mafutha kunye nokuguqula i-rheology kwi-drilling fluids nakwezinye iindawo zoshishino. I-PAC inokumelana namaqondo obushushu aphezulu kunye namanqanaba etyuwa afunyanwa kwimisebenzi ye-oyile.
   • I-CMC: I-Sodium carboxymethyl cellulose ikwabonisa iimpawu zokuguqula i-viscosity kunye ne-rheology, kodwa i-viscosity yayo idla ngokuba phantsi xa ithelekiswa ne-PAC. I-CMC yenza izisombululo ezizinzileyo nezingabonakaliyo, nto leyo eyenza ukuba ifaneleke kwiintlobo ngeentlobo zezicelo, kuquka ukutya, izinto zokuthambisa, kunye namayeza.
4. Izicelo:
   • I-PAC: I-polyanionic cellulose isetyenziswa kakhulu kwishishini leoyile negesi njenge-arhente yokulawula ukucoca, i-rheology modifier, kunye ne-fluid loss reducer kwi-drilling fluids. Ikwasetyenziswa nakwezinye iinkqubo zoshishino ezifana nezixhobo zokwakha kunye nokulungiswa kokusingqongileyo.
   • I-CMC: I-Sodium carboxymethyl cellulose inezicelo ezahlukeneyo kumashishini ahlukeneyo, kuquka ukutya neziselo (njengesithambisi kunye nesiqinisi), amayeza (njengesithambisi kunye nesinyibilikisi), iimveliso zokhathalelo lomntu (njengesilungisi se-rheology), amalaphu (njenge-agent yokulinganisa ubungakanani), kunye nokwenziwa kwephepha (njengesithambisi sephepha).

ngelixa zombini i-polyanionic cellulose (PAC) kunye ne-sodium carboxymethyl cellulose (CMC) zizinto ezivela kwi-cellulose ezineempawu ze-anionic kunye nokusetyenziswa okufanayo kwamanye amashishini, zinomahluko owahlukileyo ngokwesakhiwo seekhemikhali, iimpawu, kunye nokusetyenziswa okuthile. I-PAC isetyenziswa kakhulu kushishino lweoyile negesi, ngelixa i-CMC ifumana ukusetyenziswa okubanzi ekutyeni, kumayeza, kukhathalelo lomntu, kwimpahla, nakwamanye amashishini.