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Modification of Polyethylene by VUV Irradiation in the Presence of Trimethylsilane and Oxygen

✍ Scribed by Ute Daschiel; Julia Spanring; Maria F. Ebel; Robert Svagera; Hartmuth Schröttner; Wolfgang Kern

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
209 KB
Volume
209
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

The photoassisted modification of LDPE by VUV irradiation in a reactive trimethylsilane/oxygen atmosphere was investigated. The modified LDPE surface was investigated by FT‐IR, XPS, contact‐angle measurements and electron microscopy. Attachment of alkylsilyl and Si–O units to LDPE was observed. Best results were obtained using an equimolar trimethylsilane/oxygen mixture. Low‐energy surfaces were obtained after a few minutes of irradiation at an intensity of 1.7 mW · cm^−2^. After prolonged irradiation, the thickness of the modified polyethylene layer is approximately 700 nm. Surface modifications of this type may be of interest to obtain protective and barrier layers on polyolefins.

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