Cotton-based raw paper, made of 100% cellulose, is used
to make
humidity-sensing, cottonid for bio-architecture applications. Despite
its renewability and excellent mechanical properties, it is inherently
flammable. In an effort to reduce its flammability, thin films of
fully renewable and environmentally benign polyelectrolytes, chitosan
(CH) and phytic acid (PA), were deposited on raw paper via layer-by-layer
(LbL) assembly. Only four bilayers (BL) of the CH/PA coating are required
to achieve self-extinguishing behavior, with a 69% reduction in peak
heat release rate measured by microscale combustion calorimetry. These
results demonstrate that this renewable intumescent LbL-assembled
film provides an effective flame-retardant treatment for these environmentally
friendly, climate-adaptive construction materials and could potentially
be used to protect many cellulosic materials.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.