TRUE FALSE The high crystallinity of PPTA (Kevlar) fibers is only due to dipole- dipole interactions. TRUE FALSE Tacticity describes the location

TRUE FALSE The high crystallinity of PPTA (Kevlar) fibers is only due to dipole- dipole interactions. TRUE FALSE Tacticity describes the location of pendant groups in a polymer molecule. TRUE FALSE A large amount of polymer chain alignment is achieved inside the spinneret during the fiber spinning process of non-liquid crystalline polymers. TRUE FALSE During polymer crystallization the configurational entropy increases and the enthalpy of crystallization is negative.

 

 


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