| 초록 |
The addition of polyhedral oligomeric silsesquioxane (POSS) derivatives into polymer matrices has received much interest recently because POSS nanoparticles (NPs) can enhance the thermal stability, decrease the flammability, lower the density, lower the thermal conductivity, increase the oxidation resistance, and lower the surface free energy.In many cases, the POSS NPs are positioned at a chain end or side chain using a mono-functionalized POSS compound. The addition of multi-functionalized POSS NPs into a polymer matrix usually results in insoluble cross-linked polymers; only a low content of POSS NPs is generally necessary when they present more than two functional units. As a result, the incorporation of main chain–type POSS units from bifunctionalized POSS NPs is an important procedure for developing new polymer/POSS nanocomposites. In this talk, we will describe the synthesis of bifunctional compound based on a double-decker silsesquioxane (DDSQ) and the related polymer nanocomposites will also discuss. |
