Herein, a temperature-responsive nanoemulsion film (NEF) system was introduced with spinodal decomposition for in-situ thermoset curing. The NEFs, fabricated by alternate layering of nanoemulsion droplets with bacterial cellulose nanofibrils (BCFs) and polyelectrolytes through the layer-by-layer (LbL) deposition, showed approximately a 32% increase in Young’s modulus compared with those fabricated with polyelectrolytes only. It was determined that such reinforcement stemmed from the presence of BCFs that form fibrillary layers in the NEF matrix. The BCF-reinforced NEFs showed the unprecedented spinodal decomposition behavior; nanoemulsion droplets uniformly dispersed in the NEF network and readily interdiffused to produce microscale oil domains with controlled phase separation rate as well as oil domain size. The insight gained from the thin film-based microphase separation

Unveiling spinodal decomposition-driven phase separation of cellulose nanofibrils-reinforced nanoemulsion films for in-situ thermoset curing

ACS Spring Meeting 2021

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