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Author Topic: Organic synthesis polymer analysis  (Read 700 times)

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Aspect

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Organic synthesis polymer analysis
« on: December 05, 2012, 02:02:25 AM »

We're making Nylon 6.6 and we need to chemically validate that our product is in fact Nylon 6.6. Though, we don't know what chemical analysis we can do to prove this.
What can we do?
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sjb

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Re: Organic synthesis polymer analysis
« Reply #1 on: December 05, 2012, 03:15:00 AM »

We're making Nylon 6.6 and we need to chemically validate that our product is in fact Nylon 6.6. Though, we don't know what chemical analysis we can do to prove this.
What can we do?

What methods of analysis do you know?
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MOTOBALL

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Re: Organic synthesis polymer analysis
« Reply #2 on: December 11, 2012, 08:55:19 AM »

I would suggest that you,

1. depolymerize by hydrolysis; this is the reverse of the polymerization reaction

2. analyze the products by (ideally) GC-MS as the trimethylsilyl (TMS) ethers; you should get EI mass spectra that are consistent with 1,6-diaminohexane (A) and adipic acid (B) (as their TMS derivatives).  You will also have oligomeric species present, e.g. A-B-A, B-A-B etc

3. you already have A and B as standards; prepare their TMS derivatives and analyze by GC-MS to confirm identities by retention times AND mass spectra
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JGK

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