Polyanionic Cellulose (PAC) uye Sodium Carboxymethyl cellulose (CMC)

Polyanionic cellulose (PAC) uye sodium carboxymethyl cellulose (CMC) ese ari maviri anobva ku cellulose anoshandiswa zvakanyanya mumaindasitiri akasiyana ekukora, kudzikamisa, uye rheological zvimiro. Nepo vachigovana zvimwe zvakafanana, ivo zvakare vane misiyano yakasiyana maererano nemakemikari chimiro, zvivakwa, uye mashandisirwo. Heino kuenzanisa pakati pePAC neCMC:

1. Chemical Structure:
   • PAC: Polyanionic cellulose ipolmer inonyungudika nemvura inotorwa kubva muselulosi nekuunzwa kwecarboxymethyl nemamwe mapoka eanionic pamusana we cellulose. Iyo ine akawanda carboxyl mapoka (-COO-) pamwe chete neketani ye cellulose, zvichiita kuti ive yakanyanya anionic.
   • CMC: Sodium carboxymethyl cellulose zvakare ipolmer inonyungudika nemvura inotorwa kubva muselulosi, asi inosangana neiyo carboxymethylation process, zvichikonzera kutsiviwa kwemapoka ehydroxyl (-OH) nemapoka ecarboxymethyl (-CH2COONa). CMC kazhinji ine mashoma emacarboxyl mapoka achienzaniswa nePAC.
2. Ionic Nature:
   • PAC: Polyanionic cellulose yakanyanya anionic nekuda kwekuvapo kweakawanda macarboxyl mapoka pamwe chete neketani ye cellulose. Inoratidza yakasimba ion-exchange properties uye inowanzoshandiswa sefiltration control agent uye rheology modifier mumvura-based drilling fluids.
   • CMC: Sodium carboxymethyl cellulose zvakare anionic, asi dhigirii rayo reanionicity rinoenderana nedhigirii rekutsiva (DS) yemapoka ecarboxymethyl. CMC inowanzoshandiswa seyakakora, inosimbisa, uye viscosity modifier mumashandisirwo akasiyana siyana, kusanganisira chikafu, mishonga, uye zvigadzirwa zvekuchengeta munhu.
3. Viscosity uye Rheology:
   • PAC: Polyanionic cellulose inoratidzira yakakwira viscosity uye shear-kutetepa maitiro mumhinduro, ichiita kuti ishande seyakakora uye rheology modifier mumvura yekuchera uye mamwe maindasitiri ekushandisa. PAC inogona kumira tembiricha yakakwira uye mazinga emunyu anosangana mukuita kweoiri.
   • CMC: Sodium carboxymethyl cellulose inoratidzawo viscosity uye rheology modification properties, asi viscosity yayo inowanzodzikira kana ichienzaniswa nePAC. CMC inoumba yakagadzikana uye pseudoplastic mhinduro, ichiita kuti ive yakakodzera kune dzakasiyana siyana dzekushandisa, kusanganisira chikafu, zvekuzora, uye mishonga.
4. Applications:
   • PAC: Polyanionic cellulose inonyanya kushandiswa muindasitiri yemafuta uye gasi sefiltration control agent, rheology modifier, uye fluid kurasikirwa inoderedza mumvura yekuchera. Inoshandiswawo mune mamwe maindasitiri ekushandisa senge zvekuvaka uye kugadzirisa kwezvakatipoteredza.
   • CMC: Sodium carboxymethyl cellulose ine akasiyana mashandisirwo mumaindasitiri akasiyana, kusanganisira chikafu uye zvinwiwa (seyakakora uye inodzikamisa), mishonga yemishonga (sebhainda uye disintegrant), zvigadzirwa zvekuchengeta munhu (seye rheology modifier), machira (seye saizi agent) , uye kugadzira mapepa (sekuwedzera kwepepa).

nepo ese ari maviri polyanionic cellulose (PAC) uye sodium carboxymethyl cellulose (CMC) ari serulosi anobva kune anionic zvimiro uye zvakafanana maapplication mune mamwe maindasitiri, ane mutsauko wakasiyana maererano nechimiro chemakemikari, zvivakwa, uye chaiwo mashandisiro. PAC inonyanya kushandiswa muindasitiri yeoiri negasi, nepo CMC ichiwana mashandisirwo akafara muchikafu, mishonga, kutarisirwa kwevanhu, machira, uye mamwe maindasitiri.