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Emulsion polymerisation is distinctive in that it

  • A.requires no water at all in the recipe
  • B.produces a solid block of polymer directly
  • C.gives the lowest molecular weight of the four
  • D.gives high molecular weight at a high rate

Answer: D

Because each particle contains at most one growing radical at a time, termination is suppressed and both rate and chain length can be high. Every other technique forces a trade-off between the two. The latex may be used directly as a coating.

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