Cellulosic and Polyurethane Aerogels

International audienceThis chapter focuses on isocyanurate and cellulose-based aerogels. First, it presents the global sol-gel synthetic path by polycondensation. Then, it summarizes all the main results on these two families of organic aerogels. Finally, some of the recent advancements concerning their use for hybridization of silica aerogels are shortly presented. Through a brief description of the basics, together with a short overview of the main properties, this article highlights the huge potential of those two classes of urethane-based aerogels