摘要
Gemini型表面活性剂分子是由2条疏水链、2个亲水基和1个间隔基组成,间隔基在靠近极性基团的部位将2个疏水基连接起来[1].亲水基可以是阴离子型(如磺酸、羧酸基等),也可以是阳离子型(如季铵盐等).
A novel Gemini surfactant bis[N,N′-(dodecanoylamino)ethyl]triethylenediamine bromide( BDEDE) was synthesized from ethyl bromide and bis(2-dodecanoylaminoethyl) ethylene diamine(BDEE), the latter was prepared from lauric acid and N,N′-bis(2-aminoethyl) ethylenediamine. The structure of the Gemini surfactant was characterized by elemental analysis, IR, ~1H NMR and ~13C NMR. Its critical micelle concentration( 0.105 mmol/L) and γ_cmc(31.0 mN/m) were determined. The cmc value of Gemini surfactant decreased by appoximately two orders of magnitude than cmc of dodecyltrimethylammonium bromide.
出处
《应用化学》
CAS
CSCD
北大核心
2004年第5期538-540,共3页
Chinese Journal of Applied Chemistry
基金
油气藏地质及开发工程国家重点实验室开放基金 (PLN0 12 0 )
四川省重点学科建设基金资助项目