Hydrophobic-Hydrophilic 분체의 계면활성제에 의한 Wettability 연구

노승백; 임미애

Journal of the Korean Industrial and Engineering Chemistry, Vol.9, No.2, 177-184, April, 1998

Export Citation

Hydrophobic-Hydrophilic 분체의 계면활성제에 의한 Wettability 연구

A Study on the Wettability by Surfactant of Hydrophobic-Hydrophilic Powders

노승백, 임미애

초록

분체 형태의 소수성 고분자 polymethylmethacrylate(PMMA), poly vinyl chloride(PVC)와 친수성 금속 aluminium에 대한 water, glycerol, formamide, diiodomethane, 1,1,2,2-tetrabromoethane, 1-bromonaphthalene, acetone, chloroform, benzene, ethanol과 methanol과의 접촉각을 Washburn식을 기본으로 한 wicking법으로 측정하였다. 또한, 농도에 따른 음이온 계면활성제 SDS(sodium dodecyl sulfate)와 양이온 계면활성제 CTAB(cetyl trimethylamouium bromide) 수용액과의 접촉각을 측정하였다. 유기액체들과의 측정된 접촉각으로부터 Zisman plot을 사용하여 임계표면장력, γc를 예측하였으며, 농도에 따른 계면활성제 SDS와 CTAB수웅액과의 접촉각으로부터 adhesion tension plot을 사용하여 γc를 예측하였다. 유기액체, 계면활성제 SDS와 CTAB수용액에 대해서 분체 PMMA의 γc는 각각 43.5, 28.3,과 36.2mNm^-1이며, 분체 PVC의 γc는 각각 44.2, 28.0과 34.8mNm^-1값을 얻었다. 이로부터, 고체 표면의 적심성과 성질이 계면활성제의 첨가에 의해 변화됨을 알 수 있었다. 또한, 측정된 접촉각으로부터 조화평균식을 사용하여 각 고체의 표면자유에너지. γs와 그 성분 값들을 결정하였다.

The contact angle on powder hydrophobic polymer PMMA(polymethylmethacrylate), PVC(poly vinyl chloride) and hydrophilic metal aluminium was measured by wicking method on the base of Washburn equation for water, glycerol, formamide, diiodomethane, 1,1,2,2-tetrabromoethane, 1-bromonaphthalene, acetone, chloroform, benzene, ethanol, methanol, and for anionic surfactant SDS(sodium dodecyl sulfate) and cationic surfactant CATB(cetyl trimethylamonium bromide) aqueous solution with concentrations. The valuse of γc estimated by Zisman plot and adhesion tension plot for contact angle with organic liquids, SDS, and CTAS aqueous solutions were 43.5, 28.3, and 36.2 mNm^-1 for PMMA and 44.2, 25.0, and 34.8 mNm^-1 for PVC, respectively. From the results, it was considered that wettability and characteristics of solid surface were transformed by adding surfactant. The surface free energy, γs and its components of PMMA, PVC, and aluminium were determined using harmonic equation.

[References]

Pyter RA, Zografi G, Mukerjee P, J. Colloid Interface Sci., 89, 144 (1982)
Janczuk B, Gonzalezmartin ML, Bruque JM, J. Colloid Interface Sci., 170(2), 383 (1995)
Luner PE, Babu SR, Mehta SC, Int. J. Pharm., 128, 29 (1996)
Adamson AW, "Physical Chemistry of Surface," Wiley (1982)
Washburn EW, Phys. Rev., 17, 273 (1921)
Wu S, "Polymer Interface and Adhesion," p. 148, Dekker, NY (1982)
"K-12 User Manual," ch. 7, KRUSS GmbH, Hamburg (1993)
van Oss CJ, "Interfacial Forces in Aqueous Media," Dekker, NY (1994)
Rosen MJ, "Surfactants and Interfacial Phenomena," p. 240, Wiley (1989)
Attwood D, Florence AT, "Surfactant Systems," Chapman and Hall (1983)
Lucassen-Reynders EH, J. Phys. Chem., 67, 969 (1962)
Elworthy PH, Mysels KJ, J. Colloid Interface Sci., 21, 337 (1961)
국윤환, 이정민, 조형채, 여수동, "콜로이드와 계면활성제," p. 35, 대광서림, 서울 (1995)
Bruil HG, Van Aartsen JJ, Colloid Polym. Sci., 252, 32 (1974)
Wu W, Giese RF, Vanoss CJ, Powder Technol., 89(2), 129 (1996)
Gau CS, Zografi G, J. Colloid Interface Sci., 140, 1 (1990)
Imoto M, "For Understanding the Surface Tension," p. 163, Kobunshi Kankokai (1993)
Matis KA, "Flotation Science and Engineering," Dekker, NY (1995)

[Referenced By]

[1] Pyter RA, Zografi G, Mukerjee P, J. Colloid Interface Sci., 89, 144 (1982)

[2] Janczuk B, Gonzalezmartin ML, Bruque JM, J. Colloid Interface Sci., 170(2), 383 (1995)

[3] Luner PE, Babu SR, Mehta SC, Int. J. Pharm., 128, 29 (1996)

[4] Adamson AW, "Physical Chemistry of Surface," Wiley (1982)

[5] Washburn EW, Phys. Rev., 17, 273 (1921)

[6] Wu S, "Polymer Interface and Adhesion," p. 148, Dekker, NY (1982)

[7] "K-12 User Manual," ch. 7, KRUSS GmbH, Hamburg (1993)

[8] van Oss CJ, "Interfacial Forces in Aqueous Media," Dekker, NY (1994)

[9] Rosen MJ, "Surfactants and Interfacial Phenomena," p. 240, Wiley (1989)

[10] Attwood D, Florence AT, "Surfactant Systems," Chapman and Hall (1983)

[11] Lucassen-Reynders EH, J. Phys. Chem., 67, 969 (1962)

[12] Elworthy PH, Mysels KJ, J. Colloid Interface Sci., 21, 337 (1961)

[13] 국윤환, 이정민, 조형채, 여수동, "콜로이드와 계면활성제," p. 35, 대광서림, 서울 (1995)

[14] Bruil HG, Van Aartsen JJ, Colloid Polym. Sci., 252, 32 (1974)

[15] Wu W, Giese RF, Vanoss CJ, Powder Technol., 89(2), 129 (1996)

[16] Gau CS, Zografi G, J. Colloid Interface Sci., 140, 1 (1990)

[17] Imoto M, "For Understanding the Surface Tension," p. 163, Kobunshi Kankokai (1993)

[18] Matis KA, "Flotation Science and Engineering," Dekker, NY (1995)