adianadiadi
Harmless
Posts: 8
Registered: 22-2-2011
Member Is Offline
Mood: No Mood
|
|
Why the nitrile groups are unreactive in polyacrylonitrile?
Nitrile group is reactive and can undergo hydrolysis easily. But the nitrile groups in polyacrylonitrile are not. What might be the reason?
Is it due to hydrophobic nature of hydrocarbon chain?
Adi
|
|
|
Nicodem
Super Moderator
Posts: 4230
Registered: 28-12-2004
Member Is Offline
Mood: No Mood
|
|
Quote: Originally posted by adianadiadi  | | Nitrile group is reactive and can undergo hydrolysis easily. But the nitrile groups in polyacrylonitrile are not. What might be the reason?
|
Could the reason perhaps be in that polyacrylonitrile is a polymer?
|
|
|
ScienceSquirrel
International Hazard
Posts: 1863
Registered: 18-6-2008
Location: Brittany
Member Is Offline
Mood: Dogs are pets but cats are little furry humans with four feet and self determination! 
|
|
The nitrile group is not that reactive and the fact that the polymer will not dissolve means that ionic reagents like strong acids that would be
expected to hydrolyse the nitrile groups find it hard to attack the material.
Insolubility is a great obstacle to chemical reactivity, sodium chloride is very reactive in aqueous solution but a suspension of salt in methanol is
extremely unreactive.
|
|
|
HHammerHeadD
Harmless
Posts: 11
Registered: 27-3-2011
Member Is Offline
Mood: No Mood
|
|
nitrile group reacts mostly to minerals...should be something to learn before experimentation.
Property's of any group of acids, regents or other organic scrubbing agents should be a chart on the wall for constant reminder of what your working
with. I need reference galore, CRS u no.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
