Here, only traces of basic impurities are sufficient to induce an anionic addition polymerization or zwitterionic addition polymerization, respectively.
12.
Addition polymerization produces only a polymer molecule, while condensation polymerization produces a polymer as well as a molecule with a low molecular weight, usually water.
13.
In fact polyurethane polymerizes with addition polymerization ( because its polymerization produces no small molecules ), but its reaction mechanism corresponds to a step-growth polymerization.
14.
The distinction between " addition polymerization " and " condensation polymerization " was introduced by Wallace Hume Carothers in 1929, and refers to the type of product produced.
15.
In fact polyurethane polymerizes with addition polymerization ( because its polymerization does not produce any small molecules, called " condensate " ), but its reaction mechanism is a step-growth polymerization.
16.
All of the common CRP methods including atom transfer radical polymerization and Reversible addition " fragmentation chain transfer polymerization as well as other living polymerization techniques including anionic addition polymerization and ring-opening polymerization have been used to synthesize gradient copolymers.
17.
Since addition polymerization has rapidly growing chains and free monomer as its reactants, and condensation polymerization occurs in step-wise fashion between monomers, dimers, and other smaller growing chains, the effect of a polymer molecule's current size on a continuing reaction is profoundly different in these two cases.
