반응 #56109

반응 방정식

acetic acid

dimethylaminoethyl methacrylate

sorbitan monooleate

acrylamide

→

Acrylamide DMAEMA

용매

water

반응 조건

후처리

1. 1
   기타The resulting emulsion is sparged with nitrogen
2. 2
   workup.ADDITIONtreated with a solution 0.10 grams of bis azoisobutyronitrile (DuPont VAZO) in 2 milliliters of benzene
3. 3
   기타Samples are withdrawn every hour
4. 4
   workup.WAITAfter 5 hours the DMAEMA had completely disappeared
5. 5
   기타20% of the acrylamide was recovered by GLC
6. 6
   workup.WAITA small portion of the monomer solution was stored at 25° C. for 24 hours

실험 절차

To a solution of 41.9 grams of glacial acetic acid in 350 grams of tap water is added 109.6 grams of dimethylaminoethyl methacrylate (DMAEMA), followed by 148.7 grams of acrylamide (AM). The monomer solution pH is 7.0. It is added slowly to a rapidly stirred solution of 30 grams of sorbitan monooleate (SMO) in 320 grams of Shellflex 131. The resulting emulsion is sparged with nitrogen, warmed to 50° C. and treated with a solution 0.10 grams of bis azoisobutyronitrile (DuPont VAZO) in 2 milliliters of benzene. The polymerization began after a 30 minute induction period. Samples are withdrawn every hour and the residual monomer content determined by gas-liquid chromatography. After 5 hours the DMAEMA had completely disappeared and 20% of the acrylamide was recovered by GLC. This indicates that ≈60% of the DMAEMA has been quaternized by the acrylamide. A small portion of the monomer solution was stored at 25° C. for 24 hours. The NMR spectrum showed that 50% of the DMAEMA had been quaternized.

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