Nanocellulose is an interesting material with unique properties and chemistry. We have worked to exploit these characteristics to develop new functional thin films and aerogels. To enhance the comfort and protection of warfighters in the battlefield and during operations in diverse climates, new technologies and material assemblies are required for the fabrication of advanced multifunctional garments that allow high water vapor transport rates (breathability) while blocking toxic chemicals and biothreats. In particular, for in-the-field military-personnel protection from chemical and biological (CB) agents, smart dynamic biological-agent-blocking materials are highly desirable that exhibit a reversible, CWA-triggered, rapid transition from a breathable state to a protective state. Cellulose materials, cellulose nanocrystals and microfibulated cellulose (CNC and MFC, respectively) were functionalized with both oxime and pyridine aldoxime (PAM) nucleophilic units. New films based on MFC-PAM, PEI, and crosslinker were prepared. Studies of the neutralization of a CWA simulant, DFP, by various solid films were performed. Surface-enhanced Raman spectroscopy (SERS) has also been explored as a method to allow visualization of CWA diffusion through the films.

Bioproduct derived protective layers: Self-exfoliating reactive layers

255th National Meeting (2018)

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