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Which of the following thermoplastics is transparent?

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+1 vote
in Food Packaging Technology by (63.0k points)
Which of the following thermoplastics is transparent?

(a) Polyphenylene Sulfide (PPS)

(b) Polystyrene (PS)

(c) Polyaryletheretherketone(PEEK)

(d) Polypropylene (PP)

I have been asked this question in an international level competition.

This interesting question is from Optical, Mechanical Properties of Thermoplastic Polymers in portion Thermoplastic Polymers Properties & Processing of Food Packaging Technology

1 Answer

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Best answer
Right option is (b) Polystyrene (PS)

The explanation: Transparency is related to the degree of regularity in the arrangement of molecules. This is due to the amorphous arrangement of the macromolecules. Opaque plastics have more of a semi-crystalline to crystalline arrangement.

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