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If so, do gas bubbles initially appear and then an additional process is required to remove them ?

2007-09-11 07:32:02 · 1 answers · asked by Anonymous in Science & Mathematics Chemistry

1 answers

Almost all polymer do, and the result is the so, the polymer is usually just allowed to settle and the excess gas is slowly passed out of the polymer, rubber is no different.

Sometimes, if you have a crystalline polymer you can, precipitate it out of the reaction medium, and the redissolve it in a suitable solvent, and then re-precipitating it to purify it, almost NO gas retention is shown for these types of polymers.

Some polymers, though, must be prepared in bulk, and they get viscous and precipitate out of the reaction medium before they can be redissolved and purified. Although they can still be useful polymers for other applications they still may have trapped gas it the polymer matrix, which leads to imperfections in the packing structure of the polymers that is not easily removed.

An interesting question.

2007-09-11 08:03:09 · answer #1 · answered by Dr Dave P 7 · 1 0

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