The liquid-glass and liquid-liquid transitions of TPP at elevated pressure

We studied the polyamorphism of the liquid triphenyl phosphite by means of broadband dielectric spectroscopy at ambient and elevated(p = 500 MPa) pressures. The effect of pressure oil fragility, liquid-liquid phase transition, and its kinetics is discussed in relation to the two-order-parameter model proposed by Tanaka. The experimental evidence in support of this model is presented.