| 초록 |
We first discuss the principle of temperature-pressure superposition in static compression behavior of polymeric liquids, which states that compression strain and bulk modulus are the sole function of dimensionless pressure variable, (P-P0)/B0, where (P-P0) is pressure increment and B0 bulk modulus at a (low) reference pressure P0. The response of phase behavior to pressure is then investigated for deuterated polystyrene-b-poly(n-propyl methacrylate) (dPS-b-PPrMA) copolymer, which possesses ordering transition upon heating and baroplasticity (suppressed demixing by pressurization), by using small angle neutron scattering. It is the objective of the present study to seek for a similar temperature-pressure superposition in the copolymer phase and scattering behavior that the effects of temperature and pressure on a target property are inter-convertible. |
