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Specialty Chemistry Forums => Materials and Nanochemistry forum => Topic started by: LordofX on May 25, 2012, 08:34:09 AM

Title: Question regarding 'molar feed ratio' for atom transfer radical polymerization
Post by: LordofX on May 25, 2012, 08:34:09 AM

I am trying to emulate a coating process for a 316L stainless steel substrate. One of the steps calls for the atom transfer radical polymerization of poly(ethylene glycol) methacrylate. I have a pretty clear understanding of all the other steps involved but I am a bit unclear with one step.

"Surface initiated atom-transfer radical polymerization of PEGMA should be carried out using a [PEGMA (4mL)]:[CuBr]:[CuBr2]:[2,2’-bipyridine] molar feed ratio of [100]:[1]:[0.2]:[2] in 4 mL of N,N’-dimethylformamide"

I interpreted the molar feed ratio to mean mix the above substances in DMF at a ratio of [100 mol]:[1 mol]:[0.2 mol]:[2 mol] or an equivalent ratio, but I just want to make sure I'm not over simplifying it.
any help would be greatly appreciated

Title: Re: Question regarding 'molar feed ratio' for atom transfer radical polymerization
Post by: jaspevacek on June 01, 2012, 08:25:46 AM

That is the way I read it as well. You could email the author (be sure it is the corresponding author) to clarify this as well.