Qhov sib txawv tseem ceeb ntawm cationic thiab anionic polyelectrolyte yog tias cationic polyelectrolytes tuaj yeem sib cais hauv cov tshuaj aqueous los tsim cov hom polymeric zoo, whereas anionic polyelectrolytes tuaj yeem sib cais hauv cov tshuaj aqueous kom muab cov tshuaj tsis zoo polymeric.
Polyelectrolytes yog cov polymers uas muaj cov khoom rov ua dua uas coj cov pawg electrolyte. Muaj ob hom: polycations lossis cationic polyelectrolytes thiab polyanions lossis anionic polyelectrolytes. Cov cationic thiab anionic pawg no tuaj yeem sib cais hauv cov kev daws teeb meem aqueous uas muaj dej thiab ua rau cov hom polymer them nyiaj. Yog li ntawd, cov khoom ntawm polyelectrolytes zoo ib yam li electrolytes xws li ntsev thiab polymers muaj qhov hnyav molecular. Yog li ntawd, peb tuaj yeem muab lawv lub npe polys alts.
YCationic Polyelectrolyte yog dab tsi?
Cationic polyelectrolytes yog cov polymers uas muaj qhov zoo them moieties thiab anionic counterions uas muaj nyob rau hauv txhua chav tsev rov qab los yog nyob rau hauv ib feem loj ntawm chav tsev. Cov pab pawg ua haujlwm tshaj plaws hauv cov cationic polyelectrolytes muaj xws li ammonium, phosphonium, thiab imidazolium pawg.
Feem ntau, peb tuaj yeem pom kev sib txuas ntawm lub cev hauv cov polymers uas tshwm sim los ntawm kev sib cuam tshuam electrostatic. Cov no feem ntau hu ua supramolecular kev sib cuam tshuam. Feem ntau, kev sib cuam tshuam electrostatic tsis muaj zog li covalent bonds. Txawm li cas los xij, cov kev sib cuam tshuam ntawm electrostatic tuaj yeem ua kom muaj kev hloov pauv thermal ntau dua thiab cov khoom siv kho tshuab kom zoo sib piv rau cov tsis-ionic polymers.
Tsis tas li ntawd, cationic polyelectrolytes muaj txiaj ntsig zoo hauv kev kho dej, tshuaj tiv thaiv kab mob, thiab kev xa cov noob tsis yog kab mob. Qhov no feem ntau yog vim qhov hnyav molecular tuning, zoo them moiety, anionic counterion, los yog nqi ceev uas cationic polyelectrolytes muaj peev xwm them taus, thiab lwm yam.
Anionic Polyelectrolyte yog dab tsi?
Anionic polyelectrolytes yog cov polymers uas muaj qhov tsis zoo ntawm cov moieties thiab anionic counterions uas muaj nyob rau hauv txhua chav tsev rov qab los yog hauv ib feem loj ntawm chav tsev. Nws tuaj yeem muaj ntau hom anionic polyelectrolytes; acrylamide-raws li polymers raws li feem ntau daim ntawv. Tsis tas li ntawd, qhov tshwm sim ntawm sulfonic pawg hauv cov tshuaj no tuaj yeem ua rau lawv nkag siab rau pH.
Daim duab 01: Sulfonate uas muaj Anionic Polyelectrolyte (sab laug) thiab Polyacrylic Acid (sab xis)
Anionic polyelectrolytes yog dav siv tau zoo li flocculants, rheology tswj cov neeg ua haujlwm, thiab cov nplaum. Ntxiv mus, cov ntaub ntawv polymeric no tseem ceeb hauv kev kho cov dej khib nyiab hauv nroog thiab cov dej ntws los ntawm kev lag luam, feem ntau suav nrog kev ua cov ntxhia. Tsis tas li ntawd, muaj ib co lwm yam kev siv thiab; roj rov qab, tshem tawm xim, ntawv ua, ntxhia ua, thiab lwm yam.
Qhov txawv ntawm Cationic thiab Anionic Polyelectrolyte yog dab tsi?
Cationic thiab anionic polyelectrolytes yog cov ntaub ntawv polymeric nrog cov nqi sib txawv. Cationic polyelectrolytes yog cov khoom siv polymer uas muaj qhov zoo ntawm moieties thiab anionic counterions uas twb muaj lawm nyob rau hauv txhua chav tsev rov qab los yog nyob rau hauv ib feem loj ntawm chav tsev. Anionic polyelectrolytes, ntawm qhov tod tes, yog cov khoom siv polymer uas muaj qhov cuam tshuam tsis zoo ntawm cov moieties thiab anionic counterions uas muaj nyob rau hauv txhua chav tsev rov qab los yog hauv ib feem loj ntawm chav nyob. Qhov sib txawv tseem ceeb ntawm cationic thiab anionic polyelectrolyte yog tias cationic polyelectrolytes tuaj yeem sib cais hauv cov tshuaj aqueous los tsim cov hom polymeric zoo, hos anionic polyelectrolytes tuaj yeem sib cais hauv cov tshuaj aqueous kom muab cov tshuaj tsis zoo polymeric.
Cov hauv qab no qhia txog qhov sib txawv ntawm cationic thiab anionic polyelectrolyte hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Cationic vs Anionic Polyelectrolyte
Polyelectrolytes yog cov khoom siv polymer uas muaj cov khoom siv rov ua dua uas coj cov pawg electrolyte. Muaj ob hom polyelectrolytes ua polycations lossis cationic polyelectrolytes thiab polyanions lossis anionic polyelectrolytes. Qhov sib txawv tseem ceeb ntawm cationic thiab anionic polyelectrolyte yog tias cationic polyelectrolytes tuaj yeem sib cais hauv cov tshuaj aqueous los tsim cov hom polymeric zoo, thaum anionic polyelectrolytes tuaj yeem sib cais hauv cov tshuaj aqueous kom muab cov tshuaj tsis zoo polymeric.
