表面活性剂浓度与表面张力-稀释倍数积分值的关系研究

Study of the Relationship between the Integral Value of Surface Tension-dilute Times and the Surfactant Concentration

比较了三阶段Hermit插值和二次多项式的表面张力-稀释倍数拟合曲线及其求积方式,得出由三阶段Hermit插值所得n+1个离散数据点的拟合曲线,及对其前n个离散数据点所在区间上进行求积较佳。在三阶段Hermit插值拟合及求积方式下,分析了十二烷基硫酸钠、十六烷基三甲基溴化铵、茶皂素和去菌体前后含鼠李糖脂发酵液溶液浓度与表面张力-稀释倍数积分值之间的线性回归方程F值和r值,结果显示:F值大小受积分区间、(生物)表面活性剂种类、溶液浓度与临界胶团浓度的比值大小及溶液中杂质的影响,但F值均大于F0.005。

Two multinomials with three stages Hermit interpolations fitting were comparatively studied in this paper. It was found that the simulated curve of multiple-surface tension value of the n ＋ 1 discretization data point and the sector integral value of the first n discretization data point by using three stages Hermit interpolation fitting method was appropriate. By using three stages Hermit interpolation fitting and integral methods, the F value and r value of the linear regressive equation between the surfactant concentration and the integral value of their surface tension value-dilution times were analyzed for sodium dodecyl sulfate, cetyl trimethyl ammonium bromide, tea saporin and rhamnolipid fermentation solution with or without bacterial body. The results showed that the F value was influenced by integrating range, （bio）surfactant type, the ratio of concentration and the critical micelle concentration, as well as the impurities in the solution,but the F value was always higher than F0.005.