Discussion in 'Chemistry' started by arauca, Jul 16, 2013.
Why aromatic polymers generally have a higher cohesive strength ?
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I thought some of the so called intellectuals looking fro quantum mechanic might give some input , but apparently I am wrong
Polymers adhesion, via aromatic groups, benefit by the flatness of the aromatic groups and the resonance delocalization of electrons.
If we look at benzene, for example, the moving electrons and double bonds of the resonance structures makes this molecule lie flat, allowing it to stack. Without resonance, the molecule would pucker and therefore would not be able to get the same contact area. The resonance delocalization allows wave addition to occur over a wide flat surface area such that stacked groups adhere well to each other.
Thanks for sharing
The same way U was thinking because of flatness the delocalised electron from the ring can also exchange with molecules of additional layers of polymer molecules , also the distance between molecules will me less the in non conjugated polymers .
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