Fabrication of novel nanoparticle cellulose nanocrystal (CNC) optical coating with tunable, exfoliating (peel off) features

In-flight icing occurs mainly under certain weather conditions during the holding time before landing, when the aircraft exterior might be subjected to impact of supercooled water droplets present in the upper troposphere and cirrus clouds. ice accumulation on aircraft wings,helicopter blades and optical devices has been shown to be the primary cause of accidents.

Increased demand for high performance materials with tailored mechanical and physical properties, makes nanocellulose the most attractive renewable material for advanced application.

The main goal of this project is to develop a novel coating with anti – icing exfoliation (peel off) and intermediate infrared transparency (3-5 µm). This type of technology is highly relevant for heat-sensing applications, under extreme weather conditions.

The coating is based on CNCs (cellulose nanocrystal) embedded with silicon oil and MNP (magnetic nano particles). The oil plays a key role in this formulation,it disrupts the layered organization of CNCs and provides a mechanically weakened interface for exfoliation. The addition of the MNP is to achieve a high-rate warming of the coating while RF radiation is on.