Surface characterization of atomic oxygen beam-exposed polyimide films using contact angle measurements

K. Gotoh, M. Tagawa, N. Ohmae, H. Kinoshita, M. Tagawa

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Polyimide surfaces exposed to simulated low Earth orbit space environment, i.e., under hyperthermal atomic oxygen bombardment, were characterized by using atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. The surface analytical results showed that the roughness and the O/C ratio at the atomic oxygen-exposed polyimide surface increased with increasing atomic oxygen fluence. The advancing and receding contact angles decreased with increasing O/C ratios at the polyimide surfaces. The Lifshitz-van der Waals component, the acid and base parameters of the surface free energy of polyimide films were calculated from the contact angles. The base parameter increased with increasing O/C ratio, whereas the acid parameter and the Lifshitz-van der Waals component did not show a remarkable change. These analytical results agree with the in situ XPS data showing the formation of surface functional groups due to atomic oxygen exposure. It was demonstrated in this study that the polyimide surface in a low Earth orbit space environment may become hydrophilic due to the bombardment by atomic oxygen.

Original languageEnglish
Pages (from-to)214-220
Number of pages7
JournalColloid and Polymer Science
Volume279
Issue number3
DOIs
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

Angle measurement
polyimides
Polyimides
Contact angle
Oxygen
oxygen
aerospace environments
low Earth orbits
bombardment
Orbits
X ray photoelectron spectroscopy
Earth (planet)
acids
Acids
Functional groups
Free energy
Atomic force microscopy
fluence
roughness
Surface roughness

Keywords

  • Atomic force microscopy
  • Atomic oxygen
  • Contact angle
  • Polyimide
  • Surface free energy
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry
  • Colloid and Surface Chemistry

Cite this

Surface characterization of atomic oxygen beam-exposed polyimide films using contact angle measurements. / Gotoh, K.; Tagawa, M.; Ohmae, N.; Kinoshita, H.; Tagawa, M.

In: Colloid and Polymer Science, Vol. 279, No. 3, 2001, p. 214-220.

Research output: Contribution to journalArticle

Gotoh, K. ; Tagawa, M. ; Ohmae, N. ; Kinoshita, H. ; Tagawa, M. / Surface characterization of atomic oxygen beam-exposed polyimide films using contact angle measurements. In: Colloid and Polymer Science. 2001 ; Vol. 279, No. 3. pp. 214-220.
@article{93012b7151ac4b318dad7db3abe672b3,
title = "Surface characterization of atomic oxygen beam-exposed polyimide films using contact angle measurements",
abstract = "Polyimide surfaces exposed to simulated low Earth orbit space environment, i.e., under hyperthermal atomic oxygen bombardment, were characterized by using atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. The surface analytical results showed that the roughness and the O/C ratio at the atomic oxygen-exposed polyimide surface increased with increasing atomic oxygen fluence. The advancing and receding contact angles decreased with increasing O/C ratios at the polyimide surfaces. The Lifshitz-van der Waals component, the acid and base parameters of the surface free energy of polyimide films were calculated from the contact angles. The base parameter increased with increasing O/C ratio, whereas the acid parameter and the Lifshitz-van der Waals component did not show a remarkable change. These analytical results agree with the in situ XPS data showing the formation of surface functional groups due to atomic oxygen exposure. It was demonstrated in this study that the polyimide surface in a low Earth orbit space environment may become hydrophilic due to the bombardment by atomic oxygen.",
keywords = "Atomic force microscopy, Atomic oxygen, Contact angle, Polyimide, Surface free energy, X-ray photoelectron spectroscopy",
author = "K. Gotoh and M. Tagawa and N. Ohmae and H. Kinoshita and M. Tagawa",
year = "2001",
doi = "10.1007/s003960000414",
language = "English",
volume = "279",
pages = "214--220",
journal = "Colloid and Polymer Science",
issn = "0303-402X",
publisher = "Springer Verlag",
number = "3",

}

TY - JOUR

T1 - Surface characterization of atomic oxygen beam-exposed polyimide films using contact angle measurements

AU - Gotoh, K.

AU - Tagawa, M.

AU - Ohmae, N.

AU - Kinoshita, H.

AU - Tagawa, M.

PY - 2001

Y1 - 2001

N2 - Polyimide surfaces exposed to simulated low Earth orbit space environment, i.e., under hyperthermal atomic oxygen bombardment, were characterized by using atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. The surface analytical results showed that the roughness and the O/C ratio at the atomic oxygen-exposed polyimide surface increased with increasing atomic oxygen fluence. The advancing and receding contact angles decreased with increasing O/C ratios at the polyimide surfaces. The Lifshitz-van der Waals component, the acid and base parameters of the surface free energy of polyimide films were calculated from the contact angles. The base parameter increased with increasing O/C ratio, whereas the acid parameter and the Lifshitz-van der Waals component did not show a remarkable change. These analytical results agree with the in situ XPS data showing the formation of surface functional groups due to atomic oxygen exposure. It was demonstrated in this study that the polyimide surface in a low Earth orbit space environment may become hydrophilic due to the bombardment by atomic oxygen.

AB - Polyimide surfaces exposed to simulated low Earth orbit space environment, i.e., under hyperthermal atomic oxygen bombardment, were characterized by using atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. The surface analytical results showed that the roughness and the O/C ratio at the atomic oxygen-exposed polyimide surface increased with increasing atomic oxygen fluence. The advancing and receding contact angles decreased with increasing O/C ratios at the polyimide surfaces. The Lifshitz-van der Waals component, the acid and base parameters of the surface free energy of polyimide films were calculated from the contact angles. The base parameter increased with increasing O/C ratio, whereas the acid parameter and the Lifshitz-van der Waals component did not show a remarkable change. These analytical results agree with the in situ XPS data showing the formation of surface functional groups due to atomic oxygen exposure. It was demonstrated in this study that the polyimide surface in a low Earth orbit space environment may become hydrophilic due to the bombardment by atomic oxygen.

KW - Atomic force microscopy

KW - Atomic oxygen

KW - Contact angle

KW - Polyimide

KW - Surface free energy

KW - X-ray photoelectron spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=0035108493&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035108493&partnerID=8YFLogxK

U2 - 10.1007/s003960000414

DO - 10.1007/s003960000414

M3 - Article

VL - 279

SP - 214

EP - 220

JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

SN - 0303-402X

IS - 3

ER -