Date: Thu Oct 29 16:41:23 2009
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Author: Dale E. Stille
Subject: Re: Sad & Happy balls
They are also different polymers. The bouncy is usually just regular
neoprene rubber which has long chains, the non-bouncy is usually some
form of polynorbornene which has long chains with circular pentane
Zani, Gerald wrote:
> Why does one ball bounce and the other is "sad" and does not bounce?
> Is it due to the cross-links that the sad ball does not bounce?
> Why does more cross-links cause the sad ball to not bounce?
> - JZ
From email@example.com Thu Oct 29 16:41:23 2009