CAJ | 학술논문

具有起泡能力的表面活性剂的添加是气泡尺寸调控的一个重要手段。以甲基异丁基甲醇（MIBC）、仲辛醇、甲氧基聚丙烯乙二醇（DF250）、辛基酚聚氧乙烯醚（OP-10）4种具有起泡能力的表面活性剂为试验对象，测试了4种起泡剂溶液中表面张力随起泡剂浓度的变化规律及其对气泡尺寸的影响；并通过气泡直径的测量，得到4种起泡剂的临界兼并浓度。结果表明：随着起泡剂浓度的增大，4种起泡溶液的表面张力均逐渐减小并最终趋于不变；起泡剂的表面活性越强，其临界兼并浓度值（CCC）越小，三种醇类起泡剂的 CCC 值分别为 MIBC 22．6 mg／L，仲辛醇18．2 mg／L，DF25011．6 mg／L，而表面活性最强的醚类起泡剂OP-10的 CCC 值仅为5．3 mg／L。
구유기포능력적표면활성제적첨가시기포척촌조공적일개중요수단。이갑기이정기갑순（MIBC）、중신순、갑양기취병희을이순（DF250）、신기분취양을희미（OP-10）4충구유기포능력적표면활성제위시험대상，측시료4충기포제용액중표면장력수기포제농도적변화규률급기대기포척촌적영향；병통과기포직경적측량，득도4충기포제적림계겸병농도。결과표명：수착기포제농도적증대，4충기포용액적표면장력균축점감소병최종추우불변；기포제적표면활성월강，기림계겸병농도치（CCC）월소，삼충순류기포제적 CCC 치분별위 MIBC 22．6 mg／L，중신순18．2 mg／L，DF25011．6 mg／L，이표면활성최강적미류기포제OP-10적 CCC 치부위5．3 mg／L。
The addition of surfactant to solution is an important method to adjust bubble size.Four kinds of surfactant including methyl isobutyl carbinol (MIBC),octanol,methoxy polypropylene glycol (DF250)and octylphenolethoxylates (OP-10)were em-ployed to adjust surface tension of the solutions.Bubble size characterized by Sauter mean diameter formed in different frother so-lutions was measured by Charge-coupled Device (CCD)method.Critical coalescence concentration (CCC)of these frothers was also revealed based on the above measurements.The results show that the surface tension of frother solutions decreases with the increase of frother concentration,and finally reaches a balance value in a specific concentration.The stronger the frother surface activity is,the lower the CCC value is.The CCC values of MIBC,octanol,DF250 and OP-10 are 22.6 mg/L,18.2 mg/L,11.6 mg/L and 5.3 mg/L respectively.