Formation of Highly Releasing PET Surfaces by Atmospheric Pressure Glow Plasma Fluorination and Surface Roughening

Masutani, Yasushi; Nagai, Nodoka; Fujita, Shiro; Hayashi, Masushi; Kogoma, Masuhiro; Tanaka, Kunihito

doi:10.1002/ppap.200600072

Cited by 7 publications

(1 citation statement)

References 13 publications

(17 reference statements)

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“…Atmospheric pressure plasma has been utilized for a variety of applications, such as surface treatments [1,2], gas decomposition [3,4], ozone generation [5], and medicine [6,7]. Streamer discharge is fundamental for atmospheric pressure plasma Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of stable, high-electron-density atmospheric pressure argon plasma under pin-to-plane electrode geometry: effects of applied voltage polarity

Sato

Ishikawa

Tsutsumi

et al. 2020

J. Phys. D: Appl. Phys.

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When applying high-voltage direct current to a pin-to-plane electrode geometry with a distance of 2 mm under atmospheric pressure in argon gas, electrical breakdown forms primary then secondary streamers. The polarity of the applied voltage affects this streamer-propagating phenomenon. Properties such as propagation speed, streamer head size, and plasma generation are parameterized at nanosecond scales by computational simulations of a self-consistent, multi-species, multi-temperature plasma fluid modeling approach. For positive polarity on the pin electrode, streamer-head propagation speeds up and streamer head size increases with increasing applied voltages. However, local electron density at the head decreases. For negative polarity, corona-like discharges form around the pin electrode under low applied voltages, and diffusive steamers form under high applied voltages. Secondary streamers re-propagate from the pin after primary streamer propagation, forming a plasma with a high electron density of 1021 m−3 for the positive polarity. We show that low-voltage operations with positive polarity are useful for stable high-electron-density discharges under atmospheric pressure argon.

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Section: Introductionmentioning

confidence: 99%

Numerical simulations of stable, high-electron-density atmospheric pressure argon plasma under pin-to-plane electrode geometry: effects of applied voltage polarity

Sato

Ishikawa

Tsutsumi

et al. 2020

J. Phys. D: Appl. Phys.

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The Role of Crystallinity on Polymer Interaction with Oxygen Plasma

Junkar

Cvelbar

Vesel

et al. 2009

Plasma Processes & Polymers

103

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In order to study the role of polymer crystallinity, we performed oxygen plasma treatment experiments on amorphous and semicrystalline poly(ethylene terephthalate) (PET) polymers. The samples were treated in weakly ionized, highly dissociated RF oxygen plasma in glow region for different exposure times. We found that the degree of polymer crystallinity has an influence on the recombination probability of neutral atoms which interact with the surface. For amorphous polymers the recombination coefficient is in the range from 8.3 × 10−4 to 2.1 × 10−4 and for semicrystalline from 4 × 10−4 to 2.5 × 10−5. The degree of crystallinity in plasma processing also has influences on surface topography, formation of new functional groups, etching and hydrophobic recovery (ageing). Therefore, the polymer crystallinity should be taken into consideration when optimizing plasma treatment processes for industry as well as for accounting neutral atom recombination on polymer surfaces.

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Silicone Polymer Thin Films Fabricated by Ion‐Assisted Deposition Methods

Yano

Usui

2023

Physica Status Solidi (a)

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The ion‐assisted vapor deposition (IAD) method is utilized to prepare silicone polymer thin films with low surface energy. Methacryl‐modified silicone oligomer is deposited under irradiation of argon ions with various ion energies and currents. Fourier transform infrared analysis and solvent durability test reveal that the polymerization reaction is enhanced with increasing ion energy. Smooth and insoluble films are obtained under ion irradiation at the energy of 1 kV. The films have surface free energy of about 26 mJ m−2, and the peeling strength of an adhesive tape on their surface can be controlled by the ion current of IAD. X‐ray photoelectron spectroscopy analysis shows that the ion irradiation induces dissociation of methyl side groups and cross‐linking by Si–O network formation, leading to an increase in the peeling strength and improvement in film robustness. The silicone films deposited by IAD have potential applicability to the anti‐adhesive surfaces.

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Formation of Highly Releasing PET Surfaces by Atmospheric Pressure Glow Plasma Fluorination and Surface Roughening

Cited by 7 publications

References 13 publications

Numerical simulations of stable, high-electron-density atmospheric pressure argon plasma under pin-to-plane electrode geometry: effects of applied voltage polarity

Numerical simulations of stable, high-electron-density atmospheric pressure argon plasma under pin-to-plane electrode geometry: effects of applied voltage polarity

The Role of Crystallinity on Polymer Interaction with Oxygen Plasma

Silicone Polymer Thin Films Fabricated by Ion‐Assisted Deposition Methods

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