שאלה | For 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)

For 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)

		Above the Tg the modules for amorphous polymers drops to a plateau and stays constant until its Tm where it falls sharply again
		ncreasing temperatures above the Tg for polycrystalline polymers the tensile modules has a sharp drop that after the Tm also drops but not as sharply
		rosslinked amorphous polymers drop in tensile modulus above the Tg and have the same profile after the Tg as non crosslinked amorphous polymers.
		Increasing temperature above the Tg but below the Tm, the tensile modules drops strongly for amorphous polymers but does not decrease as much for polycrystalline polymers.