Effects of dielectric barrier discharge plasma modification on surface properties of tropical hardwoods at low pressure.

ACDAMN, DEVERA EE, CABANGON RJ, PABELINA KG & RAMOS HJ. 2012. Effects of dielectric barrier discharge plasma modification on sin-face properties of tropical hardwoods at low pressure. The study investigated the use of dielectric barrier discharge (DBD) for surface modification of Shorea contorta (white lauan), Gmelina arborea (yemane) and Acacia mangium. Wood specimens were exposed to oxygen plasma at various intensities ranging from 5.8 to 46.5 kW-min m'2. Surface free energy was calculated based on contact angle measurements to determine thermodynamic changes on plasma modified wood. Surface characteristics were evaluated using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy and atomic force microscopy (AFM). Results of the study showed that plasma modification resulted in significant increase in surface free energy of the three wood species investigated. ATR-FTIR indicated that plasma treated wood had higher surface polarity compared with untreated controls. AFM 3D image showed that oxygen plasma was capable of cleaning and etching wood surface resulting in the degradation of primary and secondary cell walls.

[1]  C. Frihart.  Wood Adhesion and Adhesives , 2012 .

[2]  Lieng-Huang Lee,et al.  Adhesion Science and Technology , 2012 .

[3]  R. J. Cabangon,et al.  Effects of plasma modification on adhesion properties of wood , 2011 .

[4]  A. Jamali,et al.  Etching of wood surfaces by glow discharge plasma , 2011, Wood Science and Technology.

[5]  Amelia Carolina Sparavigna,et al.  Role of Plasma Surface Treatments on Wetting and Adhesion , 2010 .

[6]  P. Blanchet,et al.  Surface energy modification by radiofrequency inductive and capacitive plasmas at low pressures on sugar maple: an exploratory study. , 2009 .

[7]  A. Hutchinson,et al.  A Review of Adhesion Promotion Techniques for Solid Timber Substrates , 2008 .

[8]  H. Militz,et al.  Increased PVA-Glue Adhesion on Particle Board and Fibre Board by Plasma Treatment , 2008, Holz als Roh- und Werkstoff.

[9]  M. Colombini,et al.  Wood coated with plasma-polymer for water repellence , 2008, Wood Science and Technology.

[10]  A. Ragauskas,et al.  Analysis of the topochemical effects of dielectric-barrier discharge on cellulosic fibers , 2005 .

[11]  S. Stanzl-Tschegg,et al.  Effects of surface ageing on wettability, surface chemistry, and adhesion of wood , 2004, Holz als Roh- und Werkstoff.

[12]  W. Viöl,et al.  Wood surface modification in dielectric barrier discharges at atmospheric pressure , 2003 .

[13]  U. Kogelschatz.  Dielectric-Barrier Discharges: Their History, Discharge Physics, and Industrial Applications , 2003 .

[14]  K. Neoh,et al.  Plasma polymerization of aniline on different surface functionalized substrates. , 2002, Journal of colloid and interface science.

[15]  T. Rials,et al.  Characterizing the Surface Roughness of Thermomechanical Pulp Fibers with Atomic Force Microscopy , 2001 .

[16]  Christophe Leys,et al.  Application of atmospheric pressure dielectric barrier discharges in deposition, cleaning and activation. , 2001 .

[17]  Shalom Eliezer,et al.  The Fourth State of Matter: An Introduction to Plasma Science, 2nd Edition , 2001 .

[18]  H. Militz,et al.  Surface Energy Determinations of Wood: Comparison of Methods and Wood Species , 2000 .

[19]  André Merlin,et al.  Modification of wood wettability by plasma and corona treatments , 2000 .

[20]  Roger M. Rowell,et al.  Hexamethyldisiloxane-Plasma Coating of Wood Surfaces for Creating Water Repellent Characteristics , 1999 .

[21]  K. Pandey.  A study of chemical structure of soft and hardwood and wood polymers by FTIR spectroscopy , 1999 .

[22]  D. H. Kaelble,et al.  Dispersion-Polar Surface Tension Properties of Organic Solids , 1970 .

[23]  D. K. Owens,et al.  Estimation of the surface free energy of polymers , 1969 .

[24]  A. V. Pocius,et al.  Adhesion and Adhesives Technology , 2002, Adhesion and Adhesives Technology.

[25]  K. Setoyama.  Surface Modification of Wood by Plasma Treatment and Plasma Polymerization. , 1996 .

[26]  W. M. Haynes.  CRC Handbook of Chemistry and Physics , 1990 .

[27]  D. Flamm,et al.  1 – Plasma Etching Technology—An Overview , 1989 .

[28]  E. Sjöström,et al.  Wood Chemistry: Fundamentals and Applications , 1981 .