Plasma Processes and Polymers

Cover image for Vol. 10 Issue 2

February 2013

Volume 10, Issue 2

Pages 97–188

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    1. You have free access to this content
      Plasma Process. Polym. 2/2013 (page 97)

      Zhigang Ke, Zengliang Yu and Qing Huang

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ppap.201370004

      Thumbnail image of graphical abstract

      Cover: Application of discharge plasma caused convertible reaction between the reduced and oxidized form of glutathione, one intrinsic antioxidant in cell which prevents damage to important cellular components caused by reactive oxygen species. Raman spectroscopy was employed to probe the process in a non-invasive way by monitoring the 508 cm-1 and 2567 cm-1 Raman bands corresponding to ([BOND]SH) and ([BOND]S[BOND]S[BOND]) vibrations, respectively. This study sets up an example to quantitatively investigate the oxidative stress effect on the sulfhydryl active center in proteins and the antioxidant system of biological organisms. Further details can be found in the article by Q. Huang et.al. on page 181.

  2. Masthead

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    1. Plasma Process. Polym. 2/2013 (page 98)

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ppap.201370005

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    1. Plasma Process. Polym. 2/2013 (pages 99–101)

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ppap.201370006

  4. Full Papers

    1. Top of page
    2. Cover Picture
    3. Masthead
    4. Contents
    5. Full Papers
    1. PE-CVD of Hydrophilic-COOH Functionalized Coatings on Electrolyte Gated Field-Effect Transistor Electronic Layers (pages 102–109)

      Maria Magliulo, Bianca Rita Pistillo, Mohammad Yusuf Mulla, Serafina Cotrone, Nicoletta Ditaranto, Nicola Cioffi, Pietro Favia and Luisa Torsi

      Article first published online: 28 SEP 2012 | DOI: 10.1002/ppap.201200080

      Thumbnail image of graphical abstract

      A plasma enhanced chemical vapor deposition process was proposed to functionalize the P3HT organic semiconductor surface of electrolyte gated organic field effect transistors with hydrophilic coatings bearing COOH groups. Results demonstrate that the developed plasma process allows to functionalize the P3HT surfaces with carboxyl groups with negligible adverse effect on the bulk properties of P3HT as well as on EGOFET performances.

    2. Plasma Functionalization of Carbon Nanotubes for the Synthesis of Stable Aqueous Nanofluids and Poly(vinyl alcohol) Nanocomposites (pages 110–118)

      Nathan Hordy, Sylvain Coulombe and Jean-Luc Meunier

      Article first published online: 11 SEP 2012 | DOI: 10.1002/ppap.201200075

      Thumbnail image of graphical abstract

      This work presents an inexpensive and scalable method to grow CNTs directly from stainless steel meshes and plasma functionalize them to produce stable aqueous nanofluids, which are subsequently used to produce homogeneous CNT/PVA nanocomposites with improved mechanical properties.

    3. Understanding the Synthesis of Ethylene Glycol Pulsed Plasma Discharges (pages 119–135)

      Gabriel Padron Wells, Isabel Cristina Estrada-Raygoza, P. L. Stephan Thamban, Caleb T. Nelson, Chin-Wook Chung, Lawrence J. Overzet and Matthew J. Goeckner

      Article first published online: 28 SEP 2012 | DOI: 10.1002/ppap.201200066

      Thumbnail image of graphical abstract

      Monomer fragmentation in an ethylene glycol discharge as shown in the figure can be studied using FTIR spectroscopy. Along with optical emission spectroscopy and plasma measurements with a floating probe, we discuss the pulsed EG discharge – gas phase, surface interactions, and plasma physics. Information on possible dissociation pathways and polyethylene glycol film deposition characteristics are reported in this paper.

    4. Effect of Pulse Rising Time of Pulse dc Voltage on Atmospheric Pressure Non-Equilibrium Plasma (pages 136–140)

      S. Wu, H. Xu, X. Lu and Y. Pan

      Article first published online: 5 OCT 2012 | DOI: 10.1002/ppap.201200071

      Thumbnail image of graphical abstract

      The effect of pulse rising time variable from 4 µs to 100 ns on plasma characteristics is investigated. The experimental results show that, when the trise is reduced from 4 µs to 140 ns, the length of the plasma plume increases from less than 20 mm to about 70 mm, the peak value of the discharge current increases from about 0.2 A to 1.3 A. The corresponding breakdown voltage increase from less than 4 kV to about 6 kV and the electron temperature increase from 1.25 eV to 1.55 eV.

    5. Non-Oxidative Conversion of 1,2-Dichloroethane in a Non-Thermal Plasma and Characterisation of the Polymer Formed (pages 141–149)

      Vaibhav Gaikwad, Eric Kennedy, John Mackie, Clovia Holdsworth, Scott Molloy, Sazal Kundu and Bogdan Dlugogorski

      Article first published online: 1 OCT 2012 | DOI: 10.1002/ppap.201200045

      Thumbnail image of graphical abstract

      Non-oxidative treatment of 1,2-dichloroethane (EDC) using non-thermal plasma at atmospheric pressure results in formation of vinyl chloride as the major gas phase product. Polymer formed during the reaction is analysed and it is determined that its structure resembles that of polyvinyl chloride albeit with some structural defects. Conversion of EDC in excess of 91% is achieved using this methodology. Reaction pathways for formation of gaseous products and the polymer are dealt with in this paper.

    6. Wood Protective Fungicidal Treatment: Quaternary Ammonium Molecules Grafting on Cellulose Assisted by Afterglows at Atmospheric Pressure (pages 150–160)

      Elodie Lecoq, Jacques Desbrieres, Franck Clement, Charlotte Leclaire and Bernard Held

      Article first published online: 28 SEP 2012 | DOI: 10.1002/ppap.201200026

      Thumbnail image of graphical abstract

      DBD afterglow treatments in N2 and N2/O2 are used to graft quaternary ammonium compounds (QACs) on cellulose and wood. Glycidyldimethyldodecylammonium (GDDAC) is useful to protect wood against fungi attack and its covalent binding allows avoiding leaching when wood is exposed to rainwater. We show that afterglow treatments are efficient to increase the fixation of QAC on cellulose and that a small amount of GDDAC grafted on wood is efficient to prevent fungi growth.

    7. Antimicrobial Efficacy of an Atmospheric Pressure Plasma Jet Against Biofilms of Pseudomonas aeruginosa and Staphylococcus epidermidis (pages 161–166)

      Rutger Matthes, Ina Koban, Claudia Bender, Kai Masur, Eckhard Kindel, Klaus-Dieter Weltmann, Thomas Kocher, Axel Kramer and Nils-Olaf Hübner

      Article first published online: 1 OCT 2012 | DOI: 10.1002/ppap.201100133

      Thumbnail image of graphical abstract

      With the purpose of finding new treatment options of biofilm infected wounds, an atmospheric pressure plasma jet is used. In vitro biofilms of two problematic pathogens, Pseudomonas aeruginosa and Staphylococcus epidermidis, are treated with argon plasma with and without admixture of 1% oxygen or the important biofilm antiseptic chlorhexidine digluconate.

    8. Plasma Deactivation of Endotoxic Biomolecules: Vacuum Ultraviolet Photon and Radical Beam Effects on Lipid A (pages 167–180)

      Ting-Ying Chung, Ning Ning, Jhih-Wei Chu, David B. Graves, Elliot Bartis, Joonil Seog and Gottlieb S. Oehrlein

      Article first published online: 1 OCT 2012 | DOI: 10.1002/ppap.201200087

      Thumbnail image of graphical abstract

      We chose lipid A as a model material to study plasma-generated species effects on deactivation of virulent biomolecules. In a vacuum beam system we demonstrate that VUV-induced photolysis causes bulk chemical change, while oxygen and deuterium radical-induced chemical etching results in strong surface modification. The decrease of lipid A endotoxic activity is attributed to the damage of characteristic molecular structure.

    9. Assessment of Damage of Glutathione by Glow Discharge Plasma at the Gas–Solution Interface through Raman Spectroscopy (pages 181–188)

      Zhigang Ke, Zengliang Yu and Qing Huang

      Article first published online: 5 NOV 2012 | DOI: 10.1002/ppap.201200047

      Thumbnail image of graphical abstract

      Both irreversible damage and reversible conversion of reduced glutathione to oxidized form induced by discharge plasma at the gas–solution interface is quantitatively detected by using Raman spectroscopy.

SEARCH

SEARCH BY CITATION