CAJ | 학술논문

以表面张力法测定了系列Gemini表面活性剂m-6-m以及对应单体表面活性剂CmTABr的临界胶束浓度(cmc)和降低水表面张力20 mN·m-1需要的浓度(pC20).比较这些参数表明m-6-m胶束化和在界面吸附的能力均强于CmTABr,这被归结为Gemini表面活性剂烷烃尾链间的疏水协同效应.与不对称Gemini表面活性剂12-6-m比较,对称的Gemini结构更有利于表面活性剂的聚集和吸附.
이표면장역법측정료계렬Gemini표면활성제m-6-m이급대응단체표면활성제CmTABr적림계효속농도(cmc)화강저수표면장력20 mN·m-1수요적농도(pC20).비교저사삼수표명m-6-m효속화화재계면흡부적능력균강우CmTABr,저피귀결위Gemini표면활성제완경미련간적소수협동효응.여불대칭Gemini표면활성제12-6-m비교,대칭적Gemini결구경유리우표면활성제적취집화흡부.
The critical micelle concentration (cmc) and the concentration reducing 20 mN·m-1 of water surface tension (pC20) by the Gemini surfactant series (m-6-m) and the corresponding monomers (CmTABr) were determined using surface tension measurements. Comparison between the active parameters indicates that the Gemini surfactants have a stronger micellization and adsorption ability than CmTABr, which is attributed to the hydrophobic synergism between the alkyl tails of the Gemini surfactants. The effects of dissymmetry in the Gemini surfactants (12-6-m) on the micellization and adsorption were also discussed. The results showed that the Gemini surfactant with a symmetric structure is more effective in association and adsorption than that with a dissymmetric structure.