שאלה | Mechanical properties measured by the tensile modulus (stress/strain) as a function of temperature which of the following statements is correct? (Choose from the following four possibilities)

Mechanical properties measured by the tensile modulus (stress/strain) as a function of temperature which of the following statements is correct? (Choose from the following four possibilities)

		Increasing temperature above the Tg but below the Tm, the tensile modules decreases strongly for both amorphous and crystalline polymers
		Above the Tg the modules for amorphous polymers drops to a plateau and stays constant until the Tm where it falls sharply again
		Crystalline polymers show a constant decline in the modules in the temperature range between the Tg and Tm
		Increasing temperature above the Tg for crystalline polymers the tensile modules stays relatively unchanged until the Tm after which the modules drops sharply.