【摘 要】
:
采用芘为荧光探针、二苯甲酮为猝灭剂,以分子荧光探针法首次测定了由刚性基团联接的特殊双亲水基型阴离子表面活性剂--十六烷基二苯醚二磺酸钠(C16-MADS)的胶束聚集数(Nm),并
论文部分内容阅读
采用芘为荧光探针、二苯甲酮为猝灭剂,以分子荧光探针法首次测定了由刚性基团联接的特殊双亲水基型阴离子表面活性剂--十六烷基二苯醚二磺酸钠(C16-MADS)的胶束聚集数(Nm),并考察了表面活性剂浓度、无机盐浓度和温度对Nm的影响.结果表明,表面活性剂的浓度必须高于临界胶束浓度(cmc)一个数量级时,才能测定出较为合适的Nm;随着C16-MADS浓度的增大,Nm增大,胶束内核的微极性变小;而温度对Nm的影响极小.与传统的单亲水基阴离子表面活性剂相比,C16-MADS的有序聚集体表现出许多不同之处,如Nm仅为传统的单亲水基阴离子表面活性剂胶束聚集数的一半,无机盐浓度对Nm的影响极小,胶束内核的微极性明显增大.
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