Electrical and mechanical properties of polyimide films treated by plasma formed in water and isopropanol

Ion Sava; Mihai Asandulesa; Katja Zocher; Angela Kruth; Juergen F. Kolb; Wiktor Bodnar; Kerstin Witte; Takahiro Ishizaki; Camelia Miron

doi:10.1016/j.reactfunctpolym.2018.11.005

Electrical and mechanical properties of polyimide films treated by plasma formed in water and isopropanol

Ion Sava, Mihai Asandulesa, Katja Zocher, Angela Kruth, Juergen F. Kolb, Wiktor Bodnar, Kerstin Witte, Takahiro Ishizaki, Camelia Miron

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Fluorinated aromatic polyimide films were treated by pulse electrical discharges formed in water or isopropanol. The relative permittivity, measured in large domains of frequencies and temperatures by broadband dielectric spectroscopy, slightly decreased after plasma discharge in both types of liquids. The dipolar relaxation calculated by Arrhenius equation showed that the liquid plasma treatment decreases the rotational potential energy barrier for non-cooperative motions of dipoles, as a consequence of an increased free volume of plasma exposed films. Higher values of hardness, Young's modulus, and an improved elongation were also measured for the plasma treated samples, indicating molecular rearrangements that occur after plasma treatment.

Original language	English
Pages (from-to)	22-30
Number of pages	9
Journal	Reactive and Functional Polymers
Volume	134
DOIs	https://doi.org/10.1016/j.reactfunctpolym.2018.11.005
Publication status	Published - 2019 Jan 1

Keywords

Dielectric constant
Plasma in liquids
Polyimides
Tensile strength

ASJC Scopus subject areas

Chemistry(all)
Environmental Chemistry
Biochemistry
Chemical Engineering(all)
Polymers and Plastics
Materials Chemistry

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10.1016/j.reactfunctpolym.2018.11.005

Cite this

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title = "Electrical and mechanical properties of polyimide films treated by plasma formed in water and isopropanol",

abstract = "Fluorinated aromatic polyimide films were treated by pulse electrical discharges formed in water or isopropanol. The relative permittivity, measured in large domains of frequencies and temperatures by broadband dielectric spectroscopy, slightly decreased after plasma discharge in both types of liquids. The dipolar relaxation calculated by Arrhenius equation showed that the liquid plasma treatment decreases the rotational potential energy barrier for non-cooperative motions of dipoles, as a consequence of an increased free volume of plasma exposed films. Higher values of hardness, Young's modulus, and an improved elongation were also measured for the plasma treated samples, indicating molecular rearrangements that occur after plasma treatment.",

keywords = "Dielectric constant, Plasma in liquids, Polyimides, Tensile strength",

author = "Ion Sava and Mihai Asandulesa and Katja Zocher and Angela Kruth and Kolb, {Juergen F.} and Wiktor Bodnar and Kerstin Witte and Takahiro Ishizaki and Camelia Miron",

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doi = "10.1016/j.reactfunctpolym.2018.11.005",

language = "English",

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journal = "Reactive and Functional Polymers",

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TY - JOUR

T1 - Electrical and mechanical properties of polyimide films treated by plasma formed in water and isopropanol

AU - Sava, Ion

AU - Asandulesa, Mihai

AU - Zocher, Katja

AU - Kruth, Angela

AU - Kolb, Juergen F.

AU - Bodnar, Wiktor

AU - Witte, Kerstin

AU - Ishizaki, Takahiro

AU - Miron, Camelia

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Fluorinated aromatic polyimide films were treated by pulse electrical discharges formed in water or isopropanol. The relative permittivity, measured in large domains of frequencies and temperatures by broadband dielectric spectroscopy, slightly decreased after plasma discharge in both types of liquids. The dipolar relaxation calculated by Arrhenius equation showed that the liquid plasma treatment decreases the rotational potential energy barrier for non-cooperative motions of dipoles, as a consequence of an increased free volume of plasma exposed films. Higher values of hardness, Young's modulus, and an improved elongation were also measured for the plasma treated samples, indicating molecular rearrangements that occur after plasma treatment.

AB - Fluorinated aromatic polyimide films were treated by pulse electrical discharges formed in water or isopropanol. The relative permittivity, measured in large domains of frequencies and temperatures by broadband dielectric spectroscopy, slightly decreased after plasma discharge in both types of liquids. The dipolar relaxation calculated by Arrhenius equation showed that the liquid plasma treatment decreases the rotational potential energy barrier for non-cooperative motions of dipoles, as a consequence of an increased free volume of plasma exposed films. Higher values of hardness, Young's modulus, and an improved elongation were also measured for the plasma treated samples, indicating molecular rearrangements that occur after plasma treatment.

KW - Dielectric constant

KW - Plasma in liquids

KW - Polyimides

KW - Tensile strength

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DO - 10.1016/j.reactfunctpolym.2018.11.005

M3 - Article

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SN - 1381-5148

VL - 134

SP - 22

EP - 30

JO - Reactive and Functional Polymers

JF - Reactive and Functional Polymers

ER -

Electrical and mechanical properties of polyimide films treated by plasma formed in water and isopropanol

Abstract

Keywords

ASJC Scopus subject areas

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