Synthesis, characterization, and thermal properties of new polysiloxanes containing 1,3-bis(silyl)-2,4-dimethyl-2,4-diphenylcyclodisilazane

New polysiloxane derivatives (P1 and P2) having mixed phenyl-substituted cyclodisilazane in the main-chain were synthesized. Their thermal properties have been characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The glass transition temperature (Tg) of P1 and P2 would be dependent on the polymer structure and were in the range of −27∼−80 °C. The Tgs decreased considerably with an increase in the content...