posted on 2021-02-16, 14:39authored byZuocai Zhang, Dan Yang, Hongfen Yang, Yuqi Li, Shaorong Lu, Ren Cai, Weihong Tan
At
present, environmentally friendly biobased flexible films are
of particular interest as next-generation fireproof packaging and
sensor materials. To reduce the moisture uptake and fire risks induced
by hygroscopic and flammable biobased films, we report a simple and
green approach to develop a hydrophobic, flame-retardant composite
film with synergetic benefit from soy protein isolate (SPI), sisal
cellulose microcrystals (MSF-g-COOH), graphene nanosheets
(GN), and citric acid (CA). Compared with SPI/MSF-g-COOH composite films, the as-prepared SPI/MSF-g-COOH/CA/GN composite films have significantly improved water resistance
and can maintain excellent physical structure and good electrical
conductivity in an ethanol flame. This work opens a pathway for the
development of novel fire-retardant fire alarm biosensors.