Plasma Processes and Polymers

Cover image for Vol. 11 Issue 3

March 2014

Volume 11, Issue 3

Pages 197–299

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      Cover Picture: Plasma Process. Polym. 3∕2014 (page 197)

      Luisa Stella Dolci, Santiago David Quiroga, Matteo Gherardi, Romolo Laurita, Anna Liguori, Paolo Sanibondi, Andrea Fiorani, Laura Calzà, Vittorio Colombo and Maria Letizia Focarete

      Version of Record online: 18 MAR 2014 | DOI: 10.1002/ppap.201470010

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      Front Cover: Non-thermal atmospheric pressure plasma allowed surface properties modification of electrospun poly(L-lactic acid) scaffold. Mouse embryonic fibroblast cells cultured on treated scaffolds showed a more elongated and “dendritic” morphology than cells cultured on the untreated ones. Further details can be found in the article by Maria Letizia Focarete et. al. on page 203.

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      Back Cover: Plasma Process. Polym. 3∕2014 (page 300)

      Antonia Terriza, Manuel Macías-Montero, Maria C. López-Santos, Francisco Yubero, José Cotrino and Agustín R. González-Elipe

      Version of Record online: 18 MAR 2014 | DOI: 10.1002/ppap.201470013

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      Back Cover: The characteristics of fluorinated carbon films plasma deposited by using c-C4F8 as precursor have been correlated with the plasma parameters and properties. The self-bias voltage at the substrate and the type of intermediate species in the plasma control the composition and structure of the films from polymeric CFx to fluorinated DLC compositions. Further details can be found in the article by Agustín R. González-Elipe et. al. on page 290.

  3. Masthead

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Full Papers
    1. Masthead: Plasma Process. Polym. 3∕2014 (page 198)

      Version of Record online: 18 MAR 2014 | DOI: 10.1002/ppap.201470011

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Full Papers
    1. You have free access to this content
  5. Full Papers

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    2. Cover Picture
    3. Back Cover
    4. Masthead
    5. Contents
    6. Full Papers
    1. Carboxyl Surface Functionalization of Poly(L-lactic acid) Electrospun Nanofibers through Atmospheric Non-Thermal Plasma Affects Fibroblast Morphology (pages 203–213)

      Luisa Stella Dolci, Santiago David Quiroga, Matteo Gherardi, Romolo Laurita, Anna Liguori, Paolo Sanibondi, Andrea Fiorani, Laura Calzà, Vittorio Colombo and Maria Letizia Focarete

      Version of Record online: 27 DEC 2013 | DOI: 10.1002/ppap.201300104

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      Non-thermal atmospheric pressure plasma is applied for surface modification of nanofibrous electrospun PLLA scaffolds. The plasma treatment causes a notable increase of scaffold hydrophilicity and wettability and the introduction of carboxylic functional groups. Mouse embryonic fibroblast cells cultured on plasma treated scaffolds show a more elongated and “dendritic” morphology and a higher vitality than cells cultured on pristine scaffolds.

    2. Pulsed Electrical Discharges in Silicone Emulsion (pages 214–221)

      Camelia Miron, Mihaela Balan, Lucia Pricop, Valeria Harabagiu, Ionut Jepu, Corneliu Porosnicu and Cristian Petrica Lungu

      Version of Record online: 7 JAN 2014 | DOI: 10.1002/ppap.201300048

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      Pulsed electrical discharges were initiated in silicone emulsion between tungsten electrodes arranged in a rod-to-rod configuration. The reactive species formed in the discharge determined the separation of the emulsion into two phases of different density. These phases did not emulsify again to regenerate the initial emulsion.

    3. Carbon Nanotube-Polypyrrole Composite Electrode Materials Produced In Situ by Electron Bombardment in Radio-Frequency Plasma Afterglows (pages 222–231)

      Leron Vandsburger, Sylvain Coulombe and Jean-Luc Meunier

      Version of Record online: 27 DEC 2013 | DOI: 10.1002/ppap.201300114

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      Complex interactions between carbon nanotubes (CNTs) and plasmas are described. Gas-phase plasma synthesis of poly-cyclic aromatic hydrocarbons results from initial degradation of CNTs by electron bombardment. This leads to a secondary redeposition process to form a metal substrate-bound MWNT-plasma polymer composite electrode material. The plasma polymer is composed of polypyrrole and other PAHs.

    4. OH Density Measurements by Time-Resolved Broad Band Absorption Spectroscopy in a He–H2O Dielectric Barrier Discharge with Small O2 Addition (pages 232–238)

      Luca Matteo Martini, Giorgio Dilecce, Mario Scotoni, Paolo Tosi and Santolo De Benedictis

      Version of Record online: 27 DEC 2013 | DOI: 10.1002/ppap.201300116

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      An improved version of time-resolved broad-band absorption spectroscopy is applied as a stand-alone technique to OH concentration measurements in a He–H2O–O2 dielectric barrier discharge, to investigate the effect of water and oxygen addition on OH production. OH concentration is found to depend weakly on water and, especially, oxygen, in contrast to literature data that show a stronger dependence.

    5. The Role of Argon Metastables in an Inductively Coupled Plasma for Treatment of PET (pages 239–246)

      Sandra Schröter, Hendrik Bahre, Marc Böke and Jörg Winter

      Version of Record online: 7 JAN 2014 | DOI: 10.1002/ppap.201300138

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      Absolute argon metastable (Arm) densities, lifetimes, and fluxes to surfaces (ions/Arm) are determined in an ICP-PECVD reactor used for the deposition of barrier films on PET. Even at high acetylene admixtures Arm density is still high enough to play an important role for the plasma dynamics. A large area PET sample has no significant influence on Arm densities and lifetimes.

    6. Atmospheric Pressure Non-Equilibrium Plasma Treatment to Improve the Electrospinnability of Poly(L-Lactic Acid) Polymeric Solution (pages 247–255)

      Vittorio Colombo, Davide Fabiani, Maria Letizia Focarete, Matteo Gherardi, Chiara Gualandi, Romolo Laurita and Marco Zaccaria

      Version of Record online: 14 JAN 2014 | DOI: 10.1002/ppap.201300141

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      Atmospheric pressure non-thermal plasma was successfully combined with the electrospinning process to improve the spinnability of PLLA, minimizing the use of toxic and high boiling point solvents. Plasma parameters (peak voltage and pulse repetition frequency), treatment time and treated volume were found to substantially affect the resulting nanofiber morphology. High quality solvent free scaffolds for biomedical applications were obtained.

    7. Combined In Situ XPS and UHV-Chemical Force Microscopy (CFM) Studies of the Plasma Induced Surface Oxidation of Polypropylene (pages 256–262)

      Berkem Ozkaya, Simon Grosse-Kreul, Carles Corbella, Achim von Keudell and Guido Grundmeier

      Version of Record online: 14 JAN 2014 | DOI: 10.1002/ppap.201300105

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      An in situ ultra-high-vacuum (UHV)-analytical approach is used to study the surface oxidation of poly(propylene) (PP) and correlated adhesive properties. Spin-coated PP films are modified with oxygen ion beam and resulting chemical changes are monitored with X-ray photoelectron spectroscopy, valence band spectroscopy, and UHV-based chemical force microscopy. An increase in adhesion is observed only for very low fluences.

    8. Protein Patterning on Microplasma-Activated PEO-Like Coatings (pages 263–268)

      Sameer A. Al-Bataineh and Robert D. Short

      Version of Record online: 14 JAN 2014 | DOI: 10.1002/ppap.201300140

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      A straightforward and robust method for producing protein arrays on antifouling PEO-like coatings has been developed using a “non-contact” atmospheric pressure helium microplasma array. The potential for this patterning method is in the fabrication of low-density protein microarrays on chips for applications in biosensing and diagnostics.

    9. Deposition of Water Stable Plasma Polymerized Acrylic Acid/MBA Organic Coatings by Atmospheric Pressure Air Plasma Jet (pages 269–278)

      Dhia Ben Salem, Olivier Carton, Houssam Fakhouri, Jérôme Pulpytel and Farzaneh Arefi-Khonsari

      Version of Record online: 7 FEB 2014 | DOI: 10.1002/ppap.201300064

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      An atmospheric pressure air plasma jet has been used to deposit water stable plasma polymerized acrylic acid thin films with the help of a cross-linking agent. The chemical properties and the stability of the coatings are strongly related to the deposition parameters, i.e., the jet speed and the frequency of the DC pulsed discharge.

    10. Surface Coating of Bonded PDMS Microchannels by Atmospheric Pressure Microplasma (pages 279–288)

      Muhammad Bashir, Shazia Bashir, Julia M. Rees and William. B. Zimmerman

      Version of Record online: 23 JAN 2014 | DOI: 10.1002/ppap.201300123

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      A novel technique for surface coating of sealed PDMS microchannels using atmospheric pressure microplasma is presented in this study. Two different types of plasma were generated in the microchannel and their effects on the surface of PDMS were investigated. The complex shaped microfluidic channels could be flexibly treated using this technique. Oil-in-water emulsions were formed in the hydrophilically modified microchannels to verify the deposited films and their durability.

    11. c-C4F8 Plasmas for the Deposition of Fluorinated Carbon Films (pages 289–299)

      Antonia Terriza, Manuel Macías-Montero, Maria C. López-Santos, Francisco Yubero, José Cotrino and Agustín R. González-Elipe

      Version of Record online: 12 FEB 2014 | DOI: 10.1002/ppap.201300129

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      This work addresses the use of c-C4F8 as plasma precursor for the synthesis of fluorinated carbon films, from fluorinated DLC to polymeric-like CFx, with different compositions and properties. A clue for their tailored synthesis in a RF parallel plate reactor is the plasma formation of CxFy (x > 2) fragments and their dependence on the self-bias potential and plasma gas composition.

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