Preliminary Investigation of the Interfacial and Dielectric Properties of Polyhedral Oligomeric Silsesquioxane Polymer Blends

摘要

The interfacial tension and dielectric properties of Polyhedral Oligomeric Silsesquioxane (POSS) have been investigated. POSS end-capping of a semiflexible liquid crystalline polymer lowers the interfacial tension between the parent liquid crystalline polymer (LCP) and poly(dimethyl siloxane) PDMS. The interfacial tension lowered with time, most likely because of POSS segragation to the LCP/PDMS interface. The dielectric properties of POSS compounds in the X-band region were measured. POSS appears to generally raise the dielectric constant while not impacting the loss tangent. POSS compounds were also seen to have higher hardness than the non-POSS resin.