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Polyurethane nano-composite with functionalized silica particle

Nano-size silica particles were functionalized with vinyl isocyanate and subsequently UV cured to synthesize polyurethane–silica nano-composites which were tested for mechanical, dynamic mechanical, cross-link density, contact angle and XPS. The modified silica provides composites with cross-links that are pinned at the surfaces and which effectively reinforce the materials mechanically as well as thermally.