Abstract
Two dimensional (2D) MoS2 nanosheets are firstly exfoliated by high shear mixing technique and then incorporated into PAA precursors to form the MoS2/PI nanocomposite films, and the preparation can be accomplished via in-situ polymerization, tape casting and thermalimidization processes. As a result, the mechanical and thermal properties of the prepared MoS2/PI nanocomposite films are significantly enhanced by incorporation of a small amount of MoS2 nanosheets without any surface modification. Especially, 43% and 47% increases in tensile strength and Young’smodulus can be respectively achieved upon adding certainsmall amountof MoS2 (0.75wt% or so). Meanwhile, the glass transition temperature (Tg) can be effectively improved by 11°C by taking advantages of unique superior thermal stability of MoS2 nanosheets. This desirablefabrication of MoS2/PI nanocomposite films is expectedto offer a new avenue on the development of high strength PI-based nanocomposites with comprehensive performances.
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