期刊
ADVANCED MATERIALS INTERFACES
卷 7, 期 15, 页码 -出版社
WILEY
DOI: 10.1002/admi.202000521
关键词
layer-by-layer depositions; nanoemulsions; spinodal decompositions; thermoset curing
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [NRF-2019R1H1A2079811]
Herein, a temperature-responsive nanoemulsion film (NEF) system is 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, show approximate to 32% increase in Young's modulus compared with those fabricated with polyelectrolytes only. It is determined that such reinforcement stemmed from the presence of BCFs that form fibrillary layers in the NEF matrix. The BCF-reinforced NEFs show 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 behavior confirms that NEFs layered with epoxy resin nanoemulsions are materials with promising temperature-responsive in situ thermoset curing performance.
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