How can one distinguish between polyethylene-terephthalate and polystyrene during the process of recycling?
I. the IR-spectra are different
II. different glass temperatures
III. different crystallinity
IV. different polymer density

Question

Quizplus · Accepted Answer

Polyethylene-terephthalate and polystyrene can be distinguished based on their IR-spectra and polymer density. Their different glass temperatures and crystallinity may not be reliable distinguishing factors in the recycling process.

How Can One Distinguish Between Polyethylene-Terephthalate and Polystyrene During the Process