Describe the autoacceleration and autodeceleration processes in radical

polymerizations and how they are affected by crosslinking, the presence$/$amount

of a solvent and temperature. Specifically, discuss how the overall rate of

polymerization, the conversion at which autoacceleration$/$autodeceleration begins

and the final overall conversion are qualitatively changed by $($i$)$ addition of

crosslinking agents in higher concentrations, $($ii$)$ addition of solvent, and $($iii$)$

temperature. $($iv$)$ Explain why autoacceleration $($generally$)$ does not occur in ionic

polymerizations but autodeceleration still does.