Abstract
The surface of HDPE polymer powder was fluorinated by CF4 plasma in a fluidized bed reactor. Plasma is generated by an inductively coupled electrode at 13.56 MHz (rf) frequency, connected to an auto matching network and an rf power generator. In plasma surface fluorination, the CF4 gas is diluted with He gas. The experimental variables are treatment time and rf power. The chemical property of the modified powder has been determined by using ESCA and FTIR. Plasma surface fluorination with the powder in a fluidized bed reactor results from the formation of CHF-CF2, CHF-CHF and CF2 groups. These fluorine functionalities and the fluorine atomic ratio on the surface increase with the treatment time and rf power. It has been found that the composite parameter is a good measure for determining the effect of total energy input on the plasma surface treatment of polymer powder in a fluidized bed reactor.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Anand, M., Cohen, R. E. and Baddour, R. F., “Surface Modification of Low Density Polyethylene in a Fluorine Gas Plasma,”Polymer,22, 361 (1981).
Boenig, H. V, “Plasma Science and Technology,” Cornell Univ. Press, Ithaca (1982).
Clark, D. T. and Dilks, A., “ESCA Applied to Polymers. XV. RF Glow Discharge Modification of Polymers, studied by Means of ESCA in Terms of a Direct and Radiative Energy-Transfer Model,”J. Polym. Sci.: Part A: Polym. Chem.,15, 2321 (1977).
Clark, D. T. and Dilks, A., “ESCA Applied to Polymers. XVIII. RF Glow Discharge Modification of Polymers in Helium, Neon, Argon, and Krypton,”J. Polym. Sci.: Part A: Polym. Chem.,16, 911 (1978).
Clark, D. T. and Feast, W. J., “Polymer Surfaces,” John Wiley & Sons (1978).
Corbin, G., Cohen, R. E. and Baddour, R. F., “Surface Fluorination of Polymers in a Glow Discharge Plasma: Photochemistry,”Macromol,18, 98 (1985).
Das, P. S., Adhikari, S. and Maiti, S., “Fluorination of Polymers by Sulfur Hexafluoride Gas under Electric Discharge,”J. Polym. Sci.: Part A: Polym. Chem.,32, 39 (1994).
Giegengack, H. and Hinze, D., “Investigations of the Structure of Thin Fluorocarbon Films by X-Ray Diffraction and Infrared Spectroscopy,”Phys. Stat. Sol. (A),8, 513(1971).
Hayes, L. J. and Dixon, D. D., “Solvent Barrier Property for Fluorinated Polyethylene,”J. Appl. Polym. Sci,23, 1907 (1979).
Inagaki, N., Tasaka, S. and Abe, H., “Surface Modification of Polyethylene Powder Using Plasma Reactor with Fluidized Bed,”J. Appl. Polym. Sci.,46, 595 (1992).
Inagaki, N., Tasaka, S. and Ishii, K., “Surface Modification of Polyethylene and Magnetite Powders by Combination of Fluidization and Plasma Polymerization,”J. Appl., Polym. Sci.,48, 1433 (1993).
Iriyama, Y, Yasuda, T., Cho, D. L. and Yasuda, H., “Plasma Surface Treatment on Nylon Fabrics by Fluorocarbon Compounds,”J. Appl. Polym. Sci.,39, 249 (1990).
Loh, I. H., Klausner, M., Baddour, R. F. and Cohen, R. E., “Surface Modifications of Polymers with Fluorine-Containing Plasmas: Deposition Versus Replacement Reactions,”Polym. Eng. And Sci.,27, 861 (1987).
Luongo, J. P., “Infrared Characterization of Structural Changes in Polymers,”Applied Polymer Symposia,10, 121 (1969).
Nielsen, J. R. and Holland, R. F., “Dichroism and Interpretation of the Infrared Bands of Oriented Crystalline Polyethylene,”J. Molecular Spectroscopy,6, 394 (1961).
Nihlstran, A., Hjertberg, T. and Johansson, K., “Plasma Treatment of PolyolefinsInfluence of Material Composition 1. Bulk and Surface Characterization,”Polymer,38, 3581 (1997).
Park, S. H. and Kim, S. D., “Oxygen Plasma Surface Modification of Polymer Powder in a Fluidized Bed Reactor-Functionalization of HDPE Powder Surface-,”HWAHAK KONGHAK,35, 243 (1997).
Park, S. H. and Kim, S. D., “Plasma Surface Treatment of HDPE Powder in a Fluidized Bed Reactor,”Polymer Bulletin,33, 249 (1994).
Park, S. H. and Kim, S. D., “Surface Treatment of HDPE Powder by Oxygen Plasma in a Fluidized Bed Reactor,”Colloids and Surfaces A: Physicochemical and Eng. Aspects,133, 33(1998).
Park, S. H., “Plasma Surface Modification of Polymer Powders in a Fluidized Bed Reactor,” Ph.D. Thesis, KAIST, Taejon, Korea (1995).
Poncin-Epaillard, F., Brosse, J. and Falher, T., “Cold Plasma Treatment: Surface or Bulk Modification of Polymer Film?,”Macromolecules,30, 4415 (1997).
Poncin-Epaillard, F, Pomepui, B. and Brosse, J., “Study of Polymer Treatment with Tetrafluoromethane Plasma: Reactivity of Fluorinated Species on Model Surfaces,”J. Polym. Sci.: Part A: Polym. Chem.,31, 2671 (1993).
Truesdale, E. A. and Smolinsky, G., “The Effect of Added Hydrogen on the rf Discharge Chemistry of CF4, CF3H, and C2F6,”J. Appl. Phys.,50, 6594 (1979).
Wagner, C. D..“Applied Surface Analysis,” ASTM STP 699, Barr, T. L. and Davis, L. E., eds., ASTM Philadelphia (1980).
Yagi, T., Pavlath, A. E. and Pitman, A. G., “Grafting Fluorocarbons to Polyethylene in Glow Discharge,”J. Appl. Polm. Sci.,27, 4019(1982).
Yasuda, T., Okuno, T., Yoshida, K. and Yasuda, H., “A Study of Surface Dynamics of Polymers. H Investigation by Plasma Surface Implantation of FluorineContaining Moieties,”J. Polym. Sci.: PartB: Polym. Physics,26, 1781 (1988).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Park, S.H., Kim, S.D. Functionalization of HDPE powder by CF4 plasma surface treatment in a fluidized bed reactor. Korean J. Chem. Eng. 16, 731–736 (1999). https://doi.org/10.1007/BF02698344
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02698344