Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 117, Issue -, Pages 417-427Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2015.07.010
Keywords
Hybrid composites; Interface; Mechanical properties; Dynamic mechanical analysis; Moisture diffusion
Categories
Funding
- DST [SR/S3/ChE/1326/2014-(G)]
- IUSSTF/JCERDC-SERIIUS
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Poly(vinyl butyral) - MMT clay nanocomposites were synthesized in situ with three different degrees of acetalization and with varying clay content for each vinyl butyral polymer ratio. The clay nano-platelet galleries were expanded, as determined by X-ray diffraction and TEM analysis. The glass transition temperature of the polymer nanocomposites were found to be similar to 56 degrees C and similar to 52 degrees C for the neat polymer and the 4% clay loaded samples, respectively. The 4 wt% clay loaded film showed higher strength and low strain to failure. The dynamic mechanical analysis also confirmed the improved stability of the matrix. The matrix with 0.5 butyral to alcohol ratio for 4 wt% clay exhibited good water vapor transmission compared to all other compositions. The encapsulated devices with 2.5 and 4 wt% clay loaded films increases the device life time and the efficiencies of these films were 50% higher than their encapsulated pristine polymer films. (C) 2015 Elsevier Ltd. All rights reserved.
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