Are any of these substances crystalline or semi-crystalline?

Question

Is ETFE, PTFE, polycarbonate or float glass crystalline of semi-crystalline? I need to know so i can state why the tensile strength of polycarbonante is greater than the other substances.

Answer 1

Ethylene Tetrafluoroethylene, Polytetrafluoroethylene and Polycarbonates all tend to be amorphous (non-crystalline) in structure.

The tensile strength is not a function of it being crystalline or semi-crystalline.