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840 Chapter 27
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36.
N
Bu CH
2
CH
CH
2
CH
2
CH
3
N
CH
2
CH
2
CH
3
CH
N
CH
2
CH
3
CH
37.
Because 1,4-divinylbenzene has substituents on both ends of the benzene ring that can engage in
polymerization, the polymer chains can become cross-linked, which increases the rigidity of the polymer.
CH
CH CH
2
CH
2
CH CH
2
CH CH
2
CH CH
2
CH CH
2
CH
CH CH
2
CH CH
2
CH CH
2
CH CH
2
CH CH
2
CH
1,4-divinylbenzene
cross-link