CAJ | 학술논문

利用共振光散射技术在不引入探针的条件下,建立了室温下直接测定十二烷基苯磺酸钠(SDBS)的临界胶束浓度(CMC)的方法.研究发现:在室温下,SDBS水溶液的共振光散射强度(RLS)随SDBS浓度的增加而增强;且当SDBS接近其临界胶束浓度时,RLS强度增强显著,共振光散射峰分别位于330和396 nm.396 nm处的RLS强度与SDBS浓度关系曲线呈S型曲线,本文将曲线突升起点处两条切线的交点对应的SDBS浓度,确定为SDBS的临界胶束浓度(CMC),这与荧光芘探针和电导率等方法测定结果基本一致.并利用此方法分别研究了Ca2+浓度对SDBS及其SDBS-聚乙二醇辛基苯基醚(OP)复配体系聚集行为的影响.结果表明,SDBS与OP以1∶ 3复配时,增强了体系的抗钙能力.
이용공진광산사기술재불인입탐침적조건하,건립료실온하직접측정십이완기분광산납(SDBS)적림계효속농도(CMC)적방법.연구발현:재실온하,SDBS수용액적공진광산사강도(RLS)수SDBS농도적증가이증강;차당SDBS접근기림계효속농도시,RLS강도증강현저,공진광산사봉분별위우330화396 nm.396 nm처적RLS강도여SDBS농도관계곡선정S형곡선,본문장곡선돌승기점처량조절선적교점대응적SDBS농도,학정위SDBS적림계효속농도(CMC),저여형광비탐침화전도솔등방법측정결과기본일치.병이용차방법분별연구료Ca2+농도대SDBS급기SDBS-취을이순신기분기미(OP)복배체계취집행위적영향.결과표명,SDBS여OP이1∶ 3복배시,증강료체계적항개능력.
A resonance light scattering(RLS) method for the determination of critical micelle concentration(CMC) of sodium dodecyl benzene sulfonate(SDBS) was proposed. Under room temperature, the RLS intensity of the SDBS system increased with increasing SDBS concentration. And when the concentration of SDBS approached CMC, the RLS intensity had increased sharply. The RLS peaks were appeared at 330 nm and 396 nm, respectively. The plot of the RLS intensity at 396 nm versus SDBS concentration was S-Curve. The concentration of SDBS at the intersection point of two tangents to S-curve was considered as SBDS CMC. This result was consistent with the results of the pyrene probe fluorescence spectrometry and electrical conductivity method. The influences of the concentration of Ca2+ on the aggregation behave of SDBS and SDBS-emulsion OP(OP) systems were studied by the RLS method. The results indicated that the mixed