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Topic: Does sonication break bonds for a 10kdalton polymer.  (Read 12030 times)

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Offline Mitch

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Does sonication break bonds for a 10kdalton polymer.
« on: August 30, 2006, 04:10:08 AM »
Does sonication break bonds in general?
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Offline Albert

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Re: Does sonication break bonds for a 10kdalton polymer.
« Reply #1 on: August 30, 2006, 05:16:36 AM »
I think it depends on the conditions (i.e. time).
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Offline Dude

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Re: Does sonication break bonds for a 10kdalton polymer.
« Reply #2 on: September 01, 2006, 10:18:34 AM »
There are a number of studies that indicate that high intensity sound waves can cause mechanochemical degradation of polymers.  If you need to degas a viscous goo and maintain the original properties (viscosity, GPC molar mass), I would try to gently heat the sample to lower the viscosity for quicker air release.
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Offline P

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Re: Does sonication break bonds for a 10kdalton polymer.
« Reply #3 on: September 01, 2006, 11:39:53 AM »
Do you have access to a GPC/SEC machine?    You could take your polymer and measure the MW and polydispersity and then dissolve the sample up and give it a couple of hours sonification and then GPC it again and compare. ??
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Offline DrCMS

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Re: Does sonication break bonds for a 10kdalton polymer.
« Reply #4 on: September 04, 2006, 04:59:52 AM »
Sonication can break bonds.
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