DOI: 10.1002/sia.2923. Surface modification of polyester by oxygen‐ and nitrogen‐plasma treatment

Surface modification of polyester by oxygen‐ and nitrogen‐plasma treatment

10.1002/sia.2923

Crossref journal-article

Wiley

Surface and Interface Analysis (311)

Abstract

AbstractIn this paper, we present a study on the surface modification of polyethyleneterephthalate (PET) polymer by plasma treatment. The samples were treated by nitrogen and oxygen plasma for different time periods between 3 and 90 s. The plasma was created by a radio frequency (RF) generator. The gas pressure was fixed at 75 Pa and the discharge power was set to 200 W. The samples were treated in the glow region, where the electrons temperature was about 4 eV, the positive ions density was about 2 × 1015 m−3, and the neutral atom density was about 4 × 1021 m−3 for oxygen and 1 × 1021 m−3 for nitrogen. The changes in surface morphology were observed by using atomic force microscopy (AFM). Surface wettability was determined by water contact angle measurements while the chemical composition of the surface was analyzed using XPS. The stability of functional groups on the polymer surface treated with plasma was monitored by XPS and wettability measurements in different time intervals. The oxygen‐plasma‐treated samples showed much more pronounced changes in the surface topography compared to those treated by nitrogen plasma. The contact angle of a water drop decreased from 75° for the untreated sample to 20° for oxygen and 25° for nitrogen‐plasma‐treated samples for 3 s. It kept decreasing with treatment time for both plasmas and reached about 10° for nitrogen plasma after 1 min of plasma treatment. For oxygen plasma, however, the contact angle kept decreasing even after a minute of plasma treatment and eventually fell below a few degrees. We found that the water contact angle increased linearly with the O/C ratio or N/C ratio in the case of oxygen or nitrogen plasma, respectively. Ageing effects of the plasma‐treated surface were more pronounced in the first 3 days; however, the surface hydrophilicity was rather stable later. Copyright © 2008 John Wiley & Sons, Ltd.

Bibliography

Vesel, A., Junkar, I., Cvelbar, U., Kovac, J., & Mozetic, M. (2008). Surface modification of polyester by oxygenâ and nitrogenâplasma treatment. Surface and Interface Analysis, 40(11), 1444â1453. Portico.

Authors 5

Alenka Vesel (first)
Ita Junkar (additional)
Uros Cvelbar (additional)
Janez Kovac (additional)
Miran Mozetic (additional)

References 50 Referenced 250

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Dates

Type	When
Created	16 years, 10 months ago (Oct. 11, 2008, 1:08 p.m.)
Deposited	1 year, 9 months ago (Nov. 15, 2023, 2:39 a.m.)
Indexed	2 weeks, 6 days ago (Aug. 3, 2025, 12:29 a.m.)
Issued	16 years, 10 months ago (Oct. 10, 2008)
Published	16 years, 10 months ago (Oct. 10, 2008)
Published Online	16 years, 10 months ago (Oct. 10, 2008)
Published Print	16 years, 9 months ago (Nov. 1, 2008)

Funders 0

None

BibTeX

@article{Vesel_2008, title={Surface modification of polyester by oxygen‐ and nitrogen‐plasma treatment}, volume={40}, ISSN={1096-9918}, url={http://dx.doi.org/10.1002/sia.2923}, DOI={10.1002/sia.2923}, number={11}, journal={Surface and Interface Analysis}, publisher={Wiley}, author={Vesel, Alenka and Junkar, Ita and Cvelbar, Uros and Kovac, Janez and Mozetic, Miran}, year={2008}, month=oct, pages={1444–1453} }

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