how to dissolve NBR (gloves) and PVC

Discussions about sample preparation: extraction, cleanup, derivatization, etc.

3 posts Page 1 of 1
Hey guys,

I'm working with polymers and I would like to dissolve PVC and NBR gloves to measure the limit of detection of my Py-GC-supermolecularbeam-MS, because accurately weighing samples in such small amounts is hardly possible. Unfortunately, they are are difficult to dissolve. Nevertheless, I managed to dissolve PVC in ethylmethylketon (under elevated temperatures).

However, the gloves are almost impossible to dissolve. Hopefully, you guys have some tips or tricks.

Many thanks!
We used to dissolve vinyl filters using a nitric or nitric-perchloric digestion. But the "trick" is to add a spike of chromium. I believe we might have also used vanadium with similar result. I think its the multiple valence speciation that does it. Cr just wrecks vinyl in strong acid.

A similar (but different mechanism) "trick" is to add a spike of mercury to make aluminum go rapidly in nitric acid.
It seems that you're trying to dissolve the polymer, not digest it. Is that correct? I haven't ever tried to dissolve NBR but N,N-dimethylformamide or N,N-dimethylacetamide will dissolve PVC. Perhaps it will also dissolve NBR.
3 posts Page 1 of 1

Who is online

In total there are 5 users online :: 0 registered, 0 hidden and 5 guests (based on users active over the past 5 minutes)
Most users ever online was 599 on Tue Sep 18, 2018 9:27 am

Users browsing this forum: No registered users and 5 guests

Latest Blog Posts from Separation Science

Separation Science offers free learning from the experts covering methods, applications, webinars, eSeminars, videos, tutorials for users of liquid chromatography, gas chromatography, mass spectrometry, sample preparation and related analytical techniques.

Subscribe to our eNewsletter with daily, weekly or monthly updates: Food, Environmental, (Bio)Pharmaceutical, Bioclinical, Liquid Chromatography, Gas Chromatography and Mass Spectrometry.

Liquid Chromatography

Gas Chromatography

Mass Spectrometry