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arush roy Grade: 12
        

what is free radical mechanism. i wanted to know in detail.


 

7 years ago

Answers : (2)

Prudhvi teja
83 Points
										

Dear arush


Free Radical Mechanism


The relative stability of radicals can be correlated to the hydrogen bond dissociation energies of the parent compound.


High energy free radicals tend to abstract H from the backbone leading to grafting, branching reactions or decomposition for PP.


Lower energy radicals are more stable and selective.  They will preferably react on monomers containing double bonds and they are very good "monomer chasers" (acrylics, final stage in EPS, etc.)


 
















































Compound Dissociation
Energy (KJ/mol)
Type of radicals
381 Low energy radicals:
- high selectivity
- good diffusion
397
410
435 High energy radicals:
- poor selectivity
- good H abstractors
- good diffusion
439
469
469
498
377

 


The above shows the dissociation energies of various hydrogenated compounds.



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All the best.


Regards,
Askiitians Experts
Prudhvi Teja


 


 



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7 years ago
Anuj Shrivastava
31 Points
										

A FREE RADICLE ATTACH IN AN ORGANIC COMPOUND BY ELIMINATING ANOTHER FREE RADICLE


THIS IS CALLED FREE RADICLE MECHANISM

7 years ago
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