Bipolar surfactants waa surfactants oo leh labadaba kooxaha anionic iyo cationic hydrophilic.

Si guud loo hadlo, amphoteric surfactants waa iskudhisyo leh laba kooxood oo hydrophilic ah oo ku jira isla molecule-ka, oo ay ku jiraan kooxaha anionic, cationic, iyo nonionic hydrophilic. Amphoteric surfactants-ka badanaa la isticmaalo waa kooxo hydrophilic ah oo leh ammonium ama quaternary ammonium milix oo ku jira qaybta cationic iyo noocyada carboxylate, sulfonate, iyo phosphate ee qaybta anionic. Tusaale ahaan, amino acid surfactants oo leh amino iyo kooxo qaybo ah oo ku jira isla molecule-ka waa betaine amphoteric surfactants oo laga sameeyay cusbo gudaha ah oo ka kooban labada kooxood ee quaternary ammonium iyo carboxyl, oo leh noocyo kala duwan oo kala duwan.

Soo bandhigida surfactants-ka amphiphilic way kala duwan tahay iyadoo ku xiran qiimaha pH ee xalkooda.

Muujinta sifooyinka cationic surfactants ee warbaahinta aashitada leh; Muujinta sifooyinka anionic surfactants ee warbaahinta alkaline; Muuji sifooyinka non-ionic surfactants ee warbaahinta dhexdhexaadka ah. Meesha ay sifooyinka cationic iyo anionic si fiican isugu dheelitiran yihiin waxaa loo yaqaan barta isoelectric.

Barta isoelectric-ka, noocyada amino acid-ka amphoteric-ka mararka qaarkood way soo daadanayaan, halka noocyada betaine-ka aan si fudud loogu soo daadan xitaa barta isoelectric-ka.

Nooca BetaineSurfactants waxaa markii hore loo kala saaray inay yihiin iskudhisyo cusbo ah oo ammonium ah oo quaternary ah, laakiin si ka duwan cusbada ammonium ee quaternary, ma laha anions.
Betaine waxay ilaalisaa dallacaadda molecular-ka iyo sifooyinka cationic-ga ee warbaahinta aashitada iyo alkaline-ka. Noocan surfactant-ka ma heli karo dallacaadaha togan ama taban. Iyada oo lagu saleynayo qiimaha pH ee xalka biyaha ee noocan isku-dhafka ah, waa macquul in si khaldan loogu kala saaro inay tahay surfactant amphoteric ah.

Sida ku cad dooddan, isku-dhafka nooca betaine waa in loo kala saaraa sida cationic surfactants. Iyadoo ay jiraan doodahan, inta badan isticmaalayaasha isku-dhafka betaine waxay sii wadaan inay u kala saaraan inay yihiin isku-dhafan amphoteric ah. Kala duwanaanshaha heteroelectricity, waxaa jira qaab-dhismeed laba-geesood ah oo ku jira dhaqdhaqaaqa dusha sare: R-N+(CH3) 2-CH2-COO -.

Tusaalaha ugu badan ee nooca betaine waa alkyl.betaine, badeecadeeda matalaysana waa N-dodecyl-N, N-dimethyl-N-carboxyl betaine [BS-12, Cl2H25-N+(CH3) 2-CH2COO -]. Betaine oo leh kooxo amide ah [Cl2H25 oo ku jira qaab-dhismeedka waxaa lagu beddelay R-CONH - (CH2) 3-] waxay leedahay waxqabad ka wanaagsan.

Adkaanta biyuhu saameyn kuma yeelatobetaineSurfactant. Waxay soo saartaa xumbo wanaagsan iyo xasillooni wanaagsan biyaha jilicsan iyo kuwa adag labadaba. Marka laga soo tago isku-darka isku-dhafka anionic ee qiimaha pH-ga hooseeya, waxaa sidoo kale loo isticmaali karaa iyadoo lagu darayo surfactants anionic iyo cationic. Marka la isku daro betaine iyo surfactants anionic, waxaa la gaari karaa dheellitirka ugu habboon.