Chemistry · Unit 4 · Chemical synthesis and design · Chemical synthesis
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Polyethylene and polyvinyl chloride (PVC) are both addition polymers. Polyethylene is used for plastic bags, while PVC is used for rigid pipes and window frames. (a) Explain why PVC is rigid while polyethylene is more flexible. [1] (b) Name the type of force between polymer chains that primarily determines the rigidity of these polymers. [1]
Polyethylene (PE) and polyvinyl chloride (PVC) are both thermoplastic polymers. Which statement correctly describes a key difference in their properties?
Which of the following best describes the effect of increasing the degree of crystallinity in a polymer?