Microwave-assisted atmospheric pressure plasma polymerization of hexamethyldisiloxane

Matsubayashi, Toshiki; Hidaka, Hiroki; Muguruma, Hitoshi

doi:10.7567/jjap.55.076201

Cited by 4 publications

(7 citation statements)

References 24 publications

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“…It is probable that the hydrophilic nature of DHBA is suited to the nitrogen-rich film. In contrast, the hydrophobic nature of CHCA is more suited to hydrophobic hydrocarbon films. , The MALDI TOF-MS signal with sinapic acid was not observed. Sinapic acid, which is mostly used in protein analysis, is not suitable for analysis of plasma polymer.…”

Section: Resultsmentioning

confidence: 93%

“…The “re-entrant” cavity is an axi-symmetrical and cylindrical cavity which is an ideal geometry as an electromagnetic resonator researched by Hansen in the early 1940s . The detail of system is previously reported in our work . The allylamine and acetonitrile precursors were purchased from Kanto Chemical Co., Inc. (Tokyo, Japan).…”

Section: Methodsmentioning

confidence: 99%

“…Ellipsometry was performed with a standard imaging ellipsometer (λ = 532 nm, EP3-SW, Nanofilm Technology, Goettingen, Germany). The detail of system is previously reported in our work . XPS measurements were performed with an ESCA LAB200iXL spectrometer produced by Thermo Electron Corp. (Waltham, MA).…”

Section: Methodsmentioning

confidence: 99%

“…We have considered the use of microwave-assisted atmospheric-pressure plasma. However, those have addressed surface modification, − whereas there are few reports on its use for siloxane-base film deposition. , In those, we notice that a cylindrical re-entrant microwave cavity have a potent for film deposition. The cylindrical cavity, which acts as a resonator, can be separated from the generator and connected by a coaxial cable whereas the conventional system requires a plunger and bulky waveguide. − Therefore, it provides a simple design and a suitable environment for nitrogen-rich organic film deposition.…”

Section: Introductionmentioning

confidence: 99%

“…However, the application for plasma polymerization is not carried out except by our group. In fact, we have preliminarily reported atmospheric-pressure plasma polymerization of hydrophobic hexamethyldisiloxane (HMDS) polymer . The characteristic and condition of plasma polymerization is strongly dependent on the kinds of monomer.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Characterization of Nitrogen-Rich Coating Films with Atmospheric-Pressure Plasma Generated by Re-Entrant Microwave Cavity

Muguruma

Hikichi

Matsubayashi

2017

Ind. Eng. Chem. Res.

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The deposition and characterization of nitrogen-rich coating films using atmospheric-pressure plasma generated with a re-entrant cylindrical microwave cavity is presented. This system enables simple matching, stable plasma, and free space under the orifice of plasma steam. Allylamine and acetonitrile are employed as monomers, whereas argon is used as the carrier gas. The effective area of the hydrophilic coating film is 55 mm in diameter and the deposition rate is 10 nm min −1 . X-ray photoelectron spectroscopy measurements show that the surfaces of these films contain a high concentration of nitrogen atoms and primary amine groups. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry shows that the coating films have a large molecular weight (>200 kDa). The surface morphology is very flat (ca. 1 nm). The experimental results indicate that a highly cross-linked three-dimensional polymer matrix is formed and atmosphericpressure plasma deposition is successfully achieved.

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Section: Resultsmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of Nitrogen-Rich Coating Films with Atmospheric-Pressure Plasma Generated by Re-Entrant Microwave Cavity

Muguruma

Hikichi

Matsubayashi

2017

Ind. Eng. Chem. Res.

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Utilizing Radio Frequency Plasma Treatment to Modify Polymeric Materials for Biomedical Applications

Morelli

Hawker

2021

ACS Biomater. Sci. Eng.

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Studies that utilize radio frequency plasma modification as a strategy to tune the surface properties of polymeric constructs with the goal of enhancing their use as biomedical devices have grown considerably in number over the past decade. In this Review, we present the importance of plasma surface treatment to biomedical applications, including tissue engineering and wound healing. First, we introduce several key polymeric materials of interest for use as biomaterials, including those that are naturally derived and synthetic. We, then, provide an overview of possible outcomes of plasma modification, such as surface activation, etching, and deposition of a thin film, all of which can be used to alter the surface properties of a given polymer. Following this discussion, we review the methods used to characterize plasma-treated polymer surface properties, as well as the techniques used to evaluate their interactions with biological species of interest such as mammalian cells, bacteria, and blood components. To close, we provide a perspective on future outlooks of this exciting and rapidly evolving field.

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Characterization of a novel microwave plasma sheet source operated at atmospheric pressure

Nowakowska

Czylkowski

Hrycak

et al. 2018

Plasma Sources Sci. Technol.

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Typically, microwave plasma sources (MPSs) operated at atmospheric pressure deliver plasmas in the common form of flames or cylindrical columns. In contrast to that, in this paper, a novel MPS (recently patented by us) for generating a new type of plasma in the form of a plasma sheet, which is sustained within a dielectric flat cuboid box, is presented. It is waveguide based, operated at a frequency of 2.45 GHz and in argon at atmospheric pressure. The plasma sheet consists of many filaments, typical of a microwave argon plasma. The MPS is described and analyzed in terms of optical emission spectroscopy, simulation of the electric field distributions in the MPS and numerical modeling of the working gas flow. Depending on the argon flow rate and absorbed microwave power, the determined electron density and rotational temperatures of OH radicals ranged from 3.6×10 14 to 5.6×10 14 cm −3 and from 800-1250 K, respectively. Numerical simulations have confirmed that the dimensions of the box are chosen correctly to ensure a sufficiently homogeneous distribution of the gas flow velocity field. The calculated electromagnetic field distributions in the MPS with plasma have shown that the device is well matched to the feeding line. The relative simplicity of the presented plasma source and industrially convenient plasma shape make it attractive for practical applications in the surface treatment of various materials.

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Microwave-assisted atmospheric pressure plasma polymerization of hexamethyldisiloxane

Cited by 4 publications

References 24 publications

Characterization of Nitrogen-Rich Coating Films with Atmospheric-Pressure Plasma Generated by Re-Entrant Microwave Cavity

Characterization of Nitrogen-Rich Coating Films with Atmospheric-Pressure Plasma Generated by Re-Entrant Microwave Cavity

Utilizing Radio Frequency Plasma Treatment to Modify Polymeric Materials for Biomedical Applications

Characterization of a novel microwave plasma sheet source operated at atmospheric pressure

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