10 mg of the sample into the appliance at room temperature and heated up to 170 ° c and-20 ° c, followed by a cooling and a heating back up, while the glass transition temperature (Tg) of PS measured.
In the 10 mg sample in the machine at room temperature and heated to 170 ℃, it cooled to -20 ℃ again, then heated again and measure the glass transition temperature (Tg) of the PS.
the 10 mg samples at room temperature according to the heating and 170 degrees - 20 degrees, and even cooling, then re - temperature, glass transition temperature (Tg ps) measurement.