testing wikipedia ^[1] This is going to be something else

http://www.umich.edu ${\frac {1}{1-p_{i}}}$

Step-growth polymerization	Chain-growth polymerization
Growth throughout matrix	Growth by addition of monomer only at one end of chain
Rapid loss of monomer early in the reaction	Some monomer remains even at long reaction times
Same mechanism throughout	Different mechanisms operate at different stages of reaction (i.e. Initiation, propagation and termination)
Average molecular weight increases slowly at low conversion and high extents of reaction are required to obtain high chain length	Molar mass of backbone chain increases rapidly at early stage and remains approximately the same throughout the polymerization
Ends remain active (no termination)	Chains not active after termination
No initiator necessary	Initiator required

logging into wikipedia

yay! wikipedia

creating sandbox

^ {{cite journal| title = Atom Transfer RadicalPolymerization | journal = Chem.Rev.