Ma-surfactant eBipolar ma-surfactant ane mapoka e-anionic ne-cationic hydrophilic.

Muchidimbu, amphoteric surfactants imakemikari ane mapoka maviri ehydrophilic mukati memorekuru imwe chete, kusanganisira mapoka eanionic, cationic, uye nonionic hydrophilic. Ma amphoteric surfactants anoshandiswa kazhinji mapoka ehydrophilic ane ammonium kana quaternary ammonium salts muchikamu checationic uye marudzi ecarboxylate, sulfonate, uye phosphate muchikamu cheanionic. Semuenzaniso, amino acid amphoteric surfactants ane mapoka eamino uye zvikamu mumorekuru imwe chete i betaine amphoteric surfactants yakagadzirwa kubva mumunyu wemukati une mapoka equaternary ammonium necarboxyl, ane marudzi akasiyana-siyana.

Kuratidzwa kweamphiphilic surfactants kunosiyana zvichienderana nehuwandu hwepH hwemushonga wavo.

Kuratidza hunhu hwema "cationic surfactants" mu "acidic media"; Kuratidza hunhu hwema "anionic surfactants" mu "alkaline media"; Kuratidza hunhu hwema "non-ionic surfactants" mu "neutral media". Nzvimbo iyo hunhu hwe "cationic" ne "anionic" hwakanyatsoenzana inonzi "isoelectric point".

Panzvimbo ye isoelectric, ma amino acid type amphoteric surfactants dzimwe nguva anodonha, nepo ma betaine type surfactants asingakurumidzi kudonha kunyangwe panzvimbo ye isoelectric.

Rudzi rweBetainePakutanga, zvinhu zvinogadzira mvura zvakaiswa muchikamu che quaternary ammonium salt compounds, asi kusiyana ne quaternary ammonium salts, hazvina maanion.
Betaine inochengetedza molecular positive charge yayo uye hunhu hwecationic mune acidic uye alkaline media. Rudzi urwu rwesurfactant harugone kuwana positive kana negative charges. Zvichienderana nehuwandu hwepH hwemvura yemhando iyi yekombuta, zvine musoro kuiisa muchikamu chisina kunaka seamphoteric surfactant.

Zvichienderana nepfungwa iyi, macompounds emhando ye betaine anofanira kurongwa se cationic surfactants. Pasinei nepfungwa idzi, vazhinji vanoshandisa macompound e betaine vanoramba vachiaronga se amphoteric compounds. Muhuwandu hwe heteroelectricity, pane chimiro che biphasic mu surface activity: R-N+(CH3) 2-CH2-COO -.

Muenzaniso unonyanya kuzivikanwa we betaine type surfactants ialkylbetaine, uye chigadzirwa chayo chinomiririra iN-dodecyl-N, N-dimethyl-N-carboxyl betaine [BS-12, Cl2H25-N+(CH3) 2-CH2COO -]. Betaine ine mapoka emaamide [Cl2H25 muchimiro inotsiviwa neR-CONH - (CH2) 3-] ine mashandiro ari nani.

Kuomarara kwemvura hakukanganisibetainesurfactant. Inogadzira furo rakanaka uye kugadzikana kwakanaka mumvura yakapfava neyakaoma. Pamusoro pekusanganiswa nemakemikari eanionic ane pH yakaderera, inogonawo kushandiswa pamwe chete neanionic necationic surfactants. Nekubatanidza betaine neanionic surfactants, viscosity yakakwana inogona kuwanikwa.