Monitoring Oxygen Plasma Treatment of Polypropylene With Optical Emission Spectroscopy

Optical emission spectroscopy was used to monitor the evolution of chemical reactions taking place on the surface of semicrystalline polypropylene during oxygen plasma treatment. The optical spectra were continuously acquired during treatment at different pressures (20-140 Pa). The time evolution of different excited radicals (O, H, CO, OH, and CH) allowed for the estimation of the chemical reactions. The oxidation of the material started as soon as the plasma was ignited and slowly intensified until the evaporation of the material was indicated by the appearance of the CH band. As the CH band appeared, a rapid increase in CO and OH was observed, together with a drop in O and a maximum in H. A well-defined minimum in the time needed for the appearance of the CH band was found versus the pressure. The results were explained by heating the polymer due to exothermic physical and chemical reactions and cooling by the surrounding gas.

[1]  S. Mathur,et al.  Plasma-Modified SnO2 Nanowires for Enhanced Gas Sensing , 2010 .

[2]  P. Nascente,et al.  Superficial modification in recycled PET by plasma etching for food packaging , 2010 .

[3]  P. Sáha,et al.  Analysis and Characterization of Printed Plasma-Treated Polyvinyl Chloride , 2009 .

[4]  P. Erra,et al.  Topographical and Wettability Effects of Post‐Discharge Plasma Treatments on Macroporous Polystyrene‐Divinylbenzene Solid Foams , 2009 .

[5]  M. Mozetič,et al.  The Role of Crystallinity on Polymer Interaction with Oxygen Plasma , 2009 .

[6]  S. Milošević,et al.  Space and time resolved optical emission spectroscopy characterization of inductively coupled RF water vapour plasma , 2009 .

[7]  Igor Levchenko,et al.  Kinetics of the initial stage of silicon surface oxidation : Deal–Grove or surface nucleation? , 2009 .

[8]  I. Levchenko,et al.  Control of morphology and nucleation density of iron oxide nanostructures by electric conditions on iron surfaces exposed to reactive oxygen plasmas , 2009 .

[9]  Davide Mariotti,et al.  Tailoring microplasma nanofabrication: from nanostructures to nanoarchitectures , 2009 .

[10]  Changyou Gao,et al.  Modification of surface properties of polypropylene (PP) film using DC glow discharge air plasma , 2009 .

[11]  P. Boubert,et al.  Spectroscopic measurements of nonequilibrium CO2 plasma in RF torch , 2008 .

[12]  B. Fox,et al.  Surface properties of polypropylene following a novel industrial surface‐treatment process , 2008 .

[13]  M. Mozetič,et al.  Inductively Coupled RF Oxygen Plasma Studied by Spatially Resolved Optical Emission Spectroscopy , 2008, IEEE Transactions on Plasma Science.

[14]  M. Mozetič,et al.  Long-Range Ordering of Oxygen-Vacancy Planes in α-Fe2O3 Nanowires and Nanobelts , 2008 .

[15]  R. Morent,et al.  Comparison between XPS‐ and FTIR‐analysis of plasma‐treated polypropylene film surfaces , 2008 .

[16]  P. Erra,et al.  Regulation of Surface Hydrophilicity of Plasma Treated Wool Fabrics , 2007 .

[17]  M. Mozetič,et al.  Rapid surface functionalization of poly(ethersulphone) foils using a highly reactive oxygen‐plasma treatment , 2007 .

[18]  Alenka Vesel,et al.  Neutral oxygen atom density in the MESOX air plasma solar furnace facility , 2006 .

[19]  R. Baxter,et al.  Surgical Instrument Decontamination: Efficacy of Introducing an Argon:Oxygen RF Gas-Plasma Cleaning Step as Part of the Cleaning Cycle for Stainless Steel Instruments , 2006, IEEE Transactions on Plasma Science.

[20]  L. Vaeck,et al.  Static secondary ion mass spectrometry (S-SIMS) analysis of atmospheric plasma treated polypropylene films , 2006 .

[21]  M. Mozetič,et al.  Cleaning of Porous Aluminium Titanate by Oxygen Plasma , 2006 .

[22]  T. Belmonte,et al.  Oxygen plasma surface interaction in treatments of polyolefines , 2005 .

[23]  Fabienne Poncin-Epaillard,et al.  Acid and basic functionalities of nitrogen and carbon dioxide plasma‐treated polystyrene , 2005 .

[24]  A. Ricard,et al.  Characterization of oxygen plasma with a fiber optic catalytic probe and determination of recombination coefficients , 2004, IEEE Transactions on Plasma Science.

[25]  M. Mozetič,et al.  Selective plasma etching of powder coatings , 2004 .

[26]  P. Bertrand,et al.  Characterization of Polypropylene Surface Treated in a CO2 Plasma , 2003 .

[27]  M. Kunaver The degree of dispersion of pigments in powder coatings , 2003 .

[28]  M. Mozetič,et al.  Improvement of electrical conductivity of Cu/Ag glue joints by discharge cleaning , 2003 .

[29]  T. Belmonte,et al.  Role of active species in surface cleaning by an Ar-N2 atmospheric pressure post-discharge , 2002 .

[30]  P. Pelicon,et al.  Microstructure analysis of metal-effect coatings , 2002 .

[31]  F. Poncin‐Epaillard,et al.  CO2, H2O, and CO2/H2O Plasma Chemistry for Polyethylene Surface Modification , 2002 .

[32]  M. Mozetič,et al.  Comparison of fiber optics and standard nickel catalytic probes for determination of neutral oxygen atoms concentration , 2002 .

[33]  J. Friedrich,et al.  Surface cleaning by plasma-enhanced desorption of contaminants (PEDC) , 1999 .

[34]  F. Poncin‐Epaillard,et al.  New surfaces with hydrophilic/hydrophobic characteristics in relation to (no)bioadhesion. , 2006, The International journal of artificial organs.

[35]  M. Mozetič,et al.  A Method for the Rapid Synthesis of Large Quantities of Metal Oxide Nanowires at Low Temperatures , 2022 .