(40c) Tunable and Responsive Polymer Nanocomposites Inspired By Nature

An examination of natural materials has offered a new perspective on the development of multi-functional materials with enhanced mechanical properties. One important lesson from nature is the utilization of composite structures to impart improved mechanical behavior and enhanced functionality using nanofillers. A relatively unexplored expansion of this bio-inspired, nanoscale filler approach to high performance materials is the incorporation of responsive, multi-functional reinforcing elements in polymeric composites with the goal of combining superior mechanical behavior that can be tuned with additional functionality, such as sensing and bioactivity. One approach is the use of self-assembling small molecules that form uniform, one-dimensional nanostructures as an emerging class of filler components.  Another pathway toward mechanical enhancement is the incorporation of stimuli-responsive and high-modulus electrospun nanofibers. Multilayer films are also an ideal platform for exploration of nanocomposite design and mechanical response.  In this talk, we will highlight the role of interfacial interactions, dispersed states, transport phenomena, and hierarchical organization in these bio-inspired approaches. Potential applications in barrier technology and drug delivery will be discussed as it relates to these nature-inspired composites.