Bipolar surfactants ni surfactants zifite amatsinda ya hydrophilique anionic na cationic.

Muri rusange, amphoteric surfactants ni ibice bifite amatsinda abiri ya hydrophilique muri molekile imwe, harimo anionic, cationic, na nonionic hydrophilique. Ubusanzwe amphoteric surfactants ni amatsinda ya hydrophilique afite ammonium cyangwa umunyu wa ammonium wa kane mu gice cya cationic na carboxylate, sulfonate, na fosifate mubice bya anionic. Kurugero, aminide acide amphoteric surfactants hamwe na amino hamwe nitsinda ryamatsinda muri molekile imwe ni betaine amphoteric surfactants ikozwe mumunyu wimbere urimo amonium ya quaternary na carboxyl, hamwe nubwoko butandukanye.

Iyerekana rya amphiphilic surfactants iratandukanye nagaciro ka pH kubisubizo byabo.

Kwerekana imiterere ya cactic surfactants mubitangazamakuru bya aside; Kugaragaza imiterere ya anionic surfactants mubitangazamakuru bya alkaline; Erekana imiterere ya surfactants itari ionic mubitangazamakuru bitabogamye. Ingingo aho ibintu bya cationic na anionic biringaniye neza byitwa isoelectric point.

Mugihe cya isoelectric, aminide acide amphoteric surfactants rimwe na rimwe iragwa, mugihe imiti yo mu bwoko bwa betaine ntabwo igwa byoroshye ndetse no kuri isoelectric.

Ubwoko bwa Betainesurfactants yabanje gushyirwa mubyiciro byumunyu wa kane wa amonium, ariko bitandukanye numunyu wa amonium wa kane, ntabwo bafite anion.
Betaine ikomeza imbaraga za molekile nziza hamwe na cationic itangazamakuru rya acide na alkaline. Ubu bwoko bwa surfactant ntibushobora kubona amafaranga meza cyangwa mabi. Ukurikije agaciro ka pH k'umuti w'amazi w'ubu bwoko bw'imvange, birakwiye ko ubishyira mubikorwa nka amphoteric surfactant itari yo.

Ukurikije iyi ngingo, ubwoko bwa betaine bugomba gushyirwa mubikorwa nka cationic surfactants. Nubwo hari impaka, abakoresha betaine benshi bakomeje kubashyira mubikorwa nka amphoteric compound. Mu rwego rwa heteroelectricity, hariho imiterere ya biphasic mubikorwa byo hejuru: R-N + (CH3) 2-CH2-COO -.

Urugero rusanzwe rwubwoko bwa betaine ni alkylbetaine, n'ibicuruzwa bihagarariye ni N-dodecyl-N, N-dimethyl-N-carboxyl betaine [BS-12, Cl2H25-N + (CH3) 2-CH2COO -]. Betaine hamwe na amide amatsinda [Cl2H25 muburyo yasimbuwe na R-CONH - (CH2) 3-] ifite imikorere myiza.

Gukomera kwamazi ntabwo bigira ingaruka kuribetainesurfactant. Itanga ifuro nziza kandi ituje mumazi yoroshye kandi akomeye. Usibye kuba wongeyeho hamwe na anionic compound ku giciro gito cya pH, irashobora no gukoreshwa ifatanije na anionic na cationic surfactants. Muguhuza betaine na anionic surfactants, viscosity nziza irashobora kugerwaho.