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Q 1/5
Score 0
Which of the following statements best describes closed loop plastics recycling? Select the correct answer.
300
Plastic material is brought back to an equal or comparable level of quality as its original application.
Plastic material is incinerated to generate energy.
Plastic material is reused in exactly the same application as its original purpose.
Plastic material is reused in an application of lower value than its original application.
Q 2/5
Score 0
What is, according to Prof. Peter Rem, an important reason why polymer manufacturers are not interested in creating a ‘perfect’, infinitely recyclable polymer? Select the correct answer.
300
Because of the higher costs associated with developing such a polymer.
Because they have not integrated recycling into their processes, so the competition with plastics recyclers would increase.
Because there is little demand from brands and consumers for recyclable packaging.
Because they can no longer use additives to improve, amongst other things, the transparency or colour of the packaging.
5 questions
Q.
Which of the following statements best describes closed loop plastics recycling? Select the correct answer.
1
300 sec
Q.
What is, according to Prof. Peter Rem, an important reason why polymer manufacturers are not interested in creating a ‘perfect’, infinitely recyclable polymer? Select the correct answer.
2
300 sec
Q.
Prof. Peter Rem talks about a plastics separation technology that uses a nano liquid. This magnetic density separation uses a magnet to manipulate a flotation bath filled with a ferromagnetic fluid in order to create a density ‘’gradient’’ within it. This means that plastic particles with different densities can be collected from the bath at multiple levels.
What would a recycling company that uses ‘traditional’ sink-float density separation technology need to do to achieve the same effect? Select the correct answer.
3
300 sec
Q.
Supermarkets often use black plastic trays to make their produce look more appealing. Similarly, personal care brands sometimes use dark colored plastics to give products targeted at men a more masculine look.
These considerations pose a direct challenge for sorting with Near Infrared Spectroscopy. Why? Select the correct answer.
4
300 sec
Q.
Robert Seegers discusses the design of a Coca-Cola bottle. He mentions a few aspects of the bottle with respect to recyclability. Earlier in the lecture considerations and design guidelines for recyclable packaging were mentioned.
Which of the following statements about the incorporation of these considerations in the design of the cola bottle is not true?
