Browse > Article
http://dx.doi.org/10.12925/jkocs.2011.28.2.3

Anti-Foaming Properties of Polypropylene Glycol Oleates  

Li, Hai-Yan (Department of Industrial Engineering Chemistry, College of Engineering Chungbuk National University Chemistry)
Choi, Hyoung-Chul (Department of Industrial Engineering Chemistry, College of Engineering Chungbuk National University Chemistry)
Jeong, Noh-Hee (Department of Industrial Engineering Chemistry, College of Engineering Chungbuk National University Chemistry)
Publication Information
Journal of the Korean Applied Science and Technology / v.28, no.2, 2011 , pp. 146-151 More about this Journal
Abstract
In this study, by using oleic acid and polypropylene glycol, good natured antifoaming agent for suitable electronics process under the alkaline conditions were synthesized. For the synthesized mono and diesters, acid value, hydroxyl value was measured, and identified by FT-IR and $^1H-NMR$ spectroscopy. Surface properties such as surface tension, critical micelle concentration(cmc) for diluted aqueous solution was measured, and tested the antifoaming properties according to the difference of alkyl chain length, various concentration, temperature and pH. The surface tension of synthesized antifoaming agent, PPMO(Polypropylene glycol monooleate) was 24.3 dyne/cm, PPDO(Polypropylene glycol dioleate) was 23.7 dyne/cm. By increasing of the alkyl chain length, surface tension was decreased slightly, and showed good antifoaming properties at 0.06 wt% concentration and $50^{\circ}C$, pH 11. These synthesized compounds are expected to apply as a suitable antifoaming agents in the semiconductor and the PCB(Printed Circuit Board) manufacturing process.
Keywords
Anti-foaming agent; Polypropylene glycol-2000; Oleic acid; Anti-foaming power;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. Y. Wei, M. Lu and S. F. Bai, Preparation of Dehydrated Xylitol Monooleate, Journal of Nanjing Univ. of Science and Technology, 2, 95 (1994).
2 S. T. Li, G. W. Zhou and J. M. Han, The Preparation and Influencing Factors of Defoamer, China Pulp and Paper Ind., 27(6), 62, (2006).
3 J. H. Liu, L. T. Feng, Preparation of Used in Papermaking and Its Performance Evaluation, Paper Chem., 20(3), 10 (2008).
4 S. Z. Li, J. Xu, C. X. Chi and C. P. Wei, Synthesis and Properties of Modified Polysiloxanes Defoaming Agents, Journal of Changchun University of Science and Technology, 29(2), 91 (2006).
5 T. Wang, G. Zheng and Y. J. liu, Process of Solid Superacid Catalytic Synthesis PEG-600 Glycol Oleic Acid Ester, J. Tianjin Polytec. Univ., 27(6), 27 (2008).
6 K. Koczo, J. K. Koczone, D. T. Wasan, Mechanisms for Antifoaming Action in Aqueous Systems by Hydrophobic Particles and Insoluble Liquids, Colloid Interface Sci, 166(1), 225 (1994).   DOI   ScienceOn
7 N. D. Denkov, P. Cooper, J. Y. Martin, Mechanisms of Action of Mixed Solid-Liquid Antifoamers, Dynamics of foam film rupture, 15(24), 8514 (1999).
8 Y. W. Kim, Antifoaming Theory and Antifoamer Application, Lubricating Oil Ind. Asso., 111, 8 (2004).
9 Hermann Luhmann, Foam Symposium, (1997).
10 N. H. Zeong, G. S. Park, J. S. Park and K. D. Nam, Antifoaming Properties for Aliphatic Antifoamer Formula, J. Ko. Oil Chem.' Soc., 16(2), 147 (1999).
11 D. H. Wu, The Latest Technology of Antifoamer, Oil field Chem., 1, 65 (1992).
12 Y. W. Kim, Antifoaming Agent The Latest Technological Applications, Lubricating Oil Ind. Asso., 112, 9 (2004).
13 Q. F. Yang, C. X. Huang, X. N. Huang, S. F. Wang, The Studies on OS Antifoaming Agent and Its Application, Guangxi Light Ind., 3, 17 (2000).
14 H. Bai, C. B. Li, X. T. Cheng, S. F. Wu, X. J. Liu, Preparation of High Efficient Emulsion Antifoaming Agent, Applied Chem. Ind., 37(8), 967 (2008).