Abstract

In the present study, amino-silane modified layered organosilicates were used to reinforce cyclic olefin copolymer to enhance the thermal, mechanical and moisture impermeable barrier properties. The optimum clay loading (4%) in the nanocomposite increases the thermal stability of the film while further loading decreases film stability. Water absorption behavior at 62°C was carried out and compared with the behavior at room temperature and 48°C. The stiffness of the matrix increases with clay content and the recorded strain to failure for the composite films was lower than the neat film. Dynamic mechanical analysis show higher storage modulus and low loss modulus for 2.5–4wt% clay loading. Calcium degradation test and device encapsulation also show the evidence of optimum clay loading of 4wt% for improved low water vapor transmission rates compared to other nanocomposite films.

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