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how can one distinguish between polyethylene-terephthalate and polystyrene during the process of recycling? a. the IR-spectra...

how can one distinguish between polyethylene-terephthalate and polystyrene during the process of recycling?
a. the IR-spectra are different
b. different glass temperatures
c. different crystallinity
d. different polymer density

A. a and b
B. b and c
C. c and d
D. a and d

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Answer #1

Answer :- (B) b and c

IR has shown the fingerprinting of polymer types present in plastics waste. The XRD analysis helps to provide characteristic spectral lines whose intensities vary with the type of each constituent polymer. The DSC method provided the different crystalline melting temperature, glass transition, and onset temperature for the peaks and the percent crystallinity data single out different polymers. The ratio of LIBS signals intensities of carbon and hydrogen atoms were employed for the finger printing of the different family of plastics.

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