CAJ | 학술논문

在298、 303和313 K下对浓度为0.82 和2.59 mmol/L的癸基萘磺酸钠的重水溶液中质子的自旋-自旋弛豫(T2)时间进行了测量. 浓度为0.82 mmol/L 的溶液(临界胶束浓度CMC以下)中的所有质子的T2值均随温度上升而增长,说明整个分子运动变的更自由.然而,浓度在CMC以上(2.59 mmol/L)时,分子中一部分参与形成栅栏层的质子的T2值却表现出相反的效应,它们的运动随温度上升而变慢,说明在高温下为防止水分子进入疏水胶束壳内,这些栅栏层的质子堆积的更紧密. 同时分子中其他质子的T2值随温度上升而增长,表现出正常的分子运动的温度效应.
재298、 303화313 K하대농도위0.82 화2.59 mmol/L적계기내광산납적중수용액중질자적자선-자선이예(T2)시간진행료측량. 농도위0.82 mmol/L 적용액(림계효속농도CMC이하)중적소유질자적T2치균수온도상승이증장,설명정개분자운동변적경자유.연이,농도재CMC이상(2.59 mmol/L)시,분자중일부분삼여형성책란층적질자적T2치각표현출상반적효응,타문적운동수온도상승이변만,설명재고온하위방지수분자진입소수효속각내,저사책란층적질자퇴적적경긴밀. 동시분자중기타질자적T2치수온도상승이증장,표현출정상적분자운동적온도효응.
1H spin spin (T2) relaxation times of sodium 4 decyl naphthalene sulfonate (SDNS) protons at different concentrations of 0.82 and 2.59 mmol/L were measured at 298, 303 and 313 K. These T2 values give the information about the dynamic characteristic of SDNS molecules in their monomeric and micellar states. The decrease in the T2 values of a part of SDNS micellar protons, which participate in the formation of the palisade layer, with the increase in temperature suggests that the palisade layer becomes more tightly compact with the increase in temperature in order to prevent water penetration into the hydrophobic micellar core. While the reverse effect of the other protons in the T2 values with the temperature up to 313 K shows that their motion of those protons is enhanced.