Jeremiah Johnson

Department of Chemistry
Massachusetts Institute of Technology
Tuesday, Sep. 11, 2018 4:30pm
Edward C. Taylor Auditorium, Frick B02
Todd Hyster
Add to Calendar2018-09-11 16:30:002018-09-11 16:30:00Todd HysterEdward C. Taylor Auditorium, Frick B0215YYYY-MM-DD

Using organic chemistry to understand polymer networks

All polymer networks have cyclic molecular topologies that critically impact material properties. Nevertheless, these cyclic topologies have historically been difficult to quantify and control. Informed by classical crossover experiments, we have developed experimental methods for the precise counting of cyclic topologies (loops) of various order in polymer networks. These studies have enabled new theoretical advances pertaining to elasticity and the gel point, and have inspired new designs for stimuli-responsive materials.