摘要
借助描述胶团溶液相变过程的唯象理论，结合有关电解质作用的理论模型，分析了盐对C8-卵磷脂胶团溶液相分离的作用，导出了加盐后C8-卵磷脂胶团溶液的吉布斯自由能，并据此推导出该溶液相变临界温度随盐类型和离子强度变化的规律，以及溶液中盐离子与卵磷脂分子相互作用的机制．
According to the phenomenon theory of micellar solution, the Gibb's free energy of salt added C8-lecithin micellar solutions is deduced using Debye-Huckel's and Kirkwood's theories of electrolytes. The mechanism of ion-amphiphilic molecule interaction, and the variation of the critical temperature of phase separation in the solutions vs ionic strength are also described with the Gibb's free energy model. The model consists of a linear term of ionic strength, contributed from ion-dipole interaction, and a square root term of ionic strength, contributed from ion-ion interaction. A formula which describes the critical temperature of phase separation is also deduced from the Gibb's free energy model. The formula appears as, and agrees well with the experimental data of both monovalent and divalent salt added micellar solutions.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1997年第2期134-139,共6页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
国家教委优秀年轻教师基金
