Multiple choice Which of the following is not an example of semi-crystalline thermoplastic polymer? Polyetherimide Polyether ether ketone Polystyrene Polycarbonate Polyvinyl chloride Reveal answer Fill a bubble to check yourself B Correct answer Explanation Polyether ether ketone (PEEK) is a semicrystalline thermoplastic polymer with excellent mechanical and chemical resistance properties that are retained to high temperatures.