Comparing the Bulk Modulus of Aerogels Obtained Through Different Formulas

Abstract

Aerogels are highly porous silica networks which lend themselves to several unique properties including low densities, small dielectric constants, and high impact absorption. While this list of attributes is impressive, these materials are extremely fragile. By using organic polymers as additives, researchers have discovered that gels can be made tougher while retaining many of their unique features. This paper compares the bulk moduli of pure silica aerogels to those containing collodion (nitro cellulose) by employing the novel technique of mercury porosimetry.