PMIA solution was prepared.
First, MPD was stirred for 1 hour in DMAc, and then IPC was added and stirred for 1 hour.
The solution was coludy, and the solution viscosity was very low.
And phase separation occurs after a day. The top is transparent and the bottom is opaque.
As DMAc, I use anhydrous (water content 99.0%)
Dear Suhyun Koo, may be this is an indication of poor solubility and partial precipitation of the formed polymer. Did you noticed any precipitation after setteling ? My Regards
Abdelkader BOUAZIZ When the viscosity is high by increasing the wt%, no precipitation occurs. But still the solution is cloudy.
Dear Suhyun Koo, but you said it precipitates after one day, so it is only a matter of time, if the molecular weight is high enough the precipitation took place immediately or after a short time. I think you have only oligomers or a low molecular weight product. My Regards
Abdelkader BOUAZIZ Thank you so much.
I think that i need to measure I.V.
one more question, can the following reaction be carried out by the moisture content of DMAc? CH3CON(CH3)2 + H2O + HCl → CH3COOH + (CH3)2NH2+Cl−
but if this is not, What does poor solubility is related with in polymerization?
Yes it is very possible. This a hydrolysis of N-acyl. The reaction is correct but you should add charges. My Regards
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