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Chemistry
What is not true regarding free radical polymerisation of propene?
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Q. What is not true regarding free radical polymerisation of propene?
Manipal
Manipal 2013
Polymers
A
Without proper control, atactic polypropylene is formed
13%
B
Use of Ziegler-Natta catalyst results in isotactic polypropylene
33%
C
During polymerisation, a linear unbranched. crystalline polymer is usually obtained
40%
D
During polymerisation, a secondary free radical Is produced in every step
13%
Solution:
Chain branching always occur during olefenic polymerisation due to abstraction of some H-radical from the growing polymer chain.