Optimal designing of polyurethane‐based nanocomposite system for aerostat envelope

This article reports an optimal designing of thermoplastic polyurethane (TPU) nanocomposite formulation, particularly targeting aerostat envelope for enhanced weathering and gas barrier properties. The synergistic effect of conventional UV protective additive with advanced nano materials (i.e. nanoclay and graphene) on TPU‐based formulations was explored. A series of formulations were prepared in accordance with a mixture design for three components additives (UV stabilizer, nanoclay, and graphene) and coated on to a woven polyester (PET) fabric. The coated systems were evaluated for resistance to UV radiation, resistance to helium gas permeability, and loss in both the properties against accelerated artificial weathering. The composition of the additive mixture was simultaneously optimized by desirability function approach with a view to maximize UV radiation protection and minimize helium gas permeability. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43529.