Plasma Processes and Polymers

Cover image for Vol. 11 Issue 12

Online ISSN: 1612-8869

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Recently Published Articles

  1. Gliding Arc Plasma Synthesis of Visible-Light Active C-Doped Titania Photocatalysts

    Shi-Xin Liu, Jing-Lin Liu, Xiao-Song Li, Xiaobing Zhu and Ai-Min Zhu

    Article first published online: 17 DEC 2014 | DOI: 10.1002/ppap.201400158

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    A novelty method for one-step, fast and facile synthesis of C-doped TiO2 visible-light photocatalysts using gliding arc plasma is reported. A simple strategy in the gliding arc plasma synthesis is applied, only via tuning the O2/TTIP ratio. The C-doped TiO2 photocatalysts synthesized at the O2/TTIP ratios in the range from 18 to 36 show a greatly enhanced visible-light absorption and high visible-light activity.

  2. Microplasma-Assisted Synthesis of Colloidal Gold Nanoparticles and Their Use in the Detection of Cardiac Troponin I (cTn-I)

    Ruixue Wang, Shasha Zuo, Dong Wu, Jue Zhang, Weidong Zhu, Kurt H. Becker and Jing Fang

    Article first published online: 11 DEC 2014 | DOI: 10.1002/ppap.201400127

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    Gold Nano Particles (AuNPs) were synthesized via the interaction of an atmospheric pressure non-thermal argon microplasma at various process parameters (stirring mode, discharge power, concentration of sodium citrate. AuNPs were used to prepare test strips for the detection of cardiac troponin I (cTn-I) based on lateral flow immune-chromatography assays (LFIA). Test strips prepared by microplasma-generated AuNPs showed an increased sensitivity compared to strips prepared by conventional AuNPs. This might be attributed to an increased negative charge density on the surfaces of the microplasma-generated AuNPs.

  3. Experimental and Theoretical Study of the Plasma Chemistry of Ethyl Lactate Plasma Polymerization Discharges

    Sylvie Ligot, Maxime Guillaume, Patrice Raynaud, Damien Thiry, Vincent Lemaur, Tiago Silva, Nikolay Britun, Jérôme Cornil, Philippe Dubois and Rony Snyders

    Article first published online: 9 DEC 2014 | DOI: 10.1002/ppap.201400123

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    A new and original combination of two experimental (in situ FTIR spectroscopy and mass spectrometry) and one theoretical (DFT calculations) tools are used to thoroughly study the chemical composition of an ethyl lactate plasma phase. This work shows that mass spectrometry, as a unique diagnostic technique, does not allow to fully understand the plasma phase chemistry. Also, DFT has proved to be a powerful tool, generating synthetic IR spectra by using mass spectrometry data. On the other hand, plasma and film chemistry, in terms of ester content, are correlated.

  4. Plasma-Etching for Controlled Modification of Structural and Mechanical Properties of Electrospun PET Scaffolds

    Houman Savoji, Sophie Lerouge, Abdellah Ajji and Michael R. Wertheimer

    Article first published online: 20 NOV 2014 | DOI: 10.1002/ppap.201400147

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    Aligned electrospun poly(ethylene terephthalate) nanofiber scaffolds that mimic the media layer of arteries have been fabricated. We used three different plasma etching techniques to bring their mechanical and surface properties in line with those of natural blood vessels. Substantial reduction in Young's modulus was attained after as little as 5 min treatment. We also report changes in surface composition, wettability and growth of smooth muscle cells (SMCs).

  5. Plasma Stimulation of Migration of Macrophages (pages 1193–1197)

    Vandana Miller, Abraham Lin, Gregory Fridman, Danil Dobrynin and Alexander Fridman

    Article first published online: 20 NOV 2014 | DOI: 10.1002/ppap.201400168

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    We present first evidence of in vitro stimulation of immune responses in a macrophage cell line using non-thermal plasma. Nanosecond pulsed DBD is effective in stimulating migration of macrophages in a 2D wound-healing assay. This is an important early step in generation of innate and adaptive immune responses in vivo.