Ageing and thermal degradation of plasma polymerised thin films derived from Lavandula angustifolia essential oil

Easton, C.D., and Jacob, M.V. (2009) Ageing and thermal degradation of plasma polymerised thin films derived from Lavandula angustifolia essential oil. Polymer Degradation and Stability, 94 (4). pp. 597-603.

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Abstract

The ageing and thermal degradation of polymer thin films derived from the essential oil of Lavandula angustifolia (LA) fabricated using plasma polymerisation were investigated. Spectroscopic ellipsometry and Fourier transform infrared (FTIR) spectroscopy were employed to monitor the optical parameters, thickness and chemical structure of the polyLA films fabricated at various RF powers over a period of 1400 h. The bulk of the degradation under ambient conditions was found to occur within the first 100 h after fabrication. The thermal degradation of the polyLA films was also investigated using the ellipsometry and FTIR. An increase in thermal stability was found for films fabricated at increased RF power levels. Between 200 and 300 °C, the properties indicate that a phase change occurs in the material. Samples annealed up to 405 °C demonstrated minimal residue, with retention ranging between 0.47 and 2.2%. A tuneable degradation onset temperature and minimal residue post-anneal demonstrate that the polyLA films are excellent candidates for sacrificial material in air gap fabrication.

Item ID: 11155
Item Type: Article (Refereed Research - C1)
Keywords: plasma polymer; ellipsometry; FTIR; oxidation; sacrificial material
ISSN: 1873-2321
Date Deposited: 24 May 2010 01:40
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091208 Organic Semiconductors @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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