Stationary kinetics of 3-D polymerization up to the high conversion

Chapter 5. Stationary kinetics of 3-D polymerization up to the high conversion 

Structural-physical transformations depend on the chain termination rate and viscosity of reactive medium. Increasing the local viscosity in macromolecular balls, formed as a result of inter- and intramolecular aggregations of the polymeric chains, leads to a decrease of the chain termination rate and an increase of the polymerization rate, respectively, causing the increase of the local viscosity. The process in such micro-volumes proceeds by auto-catalysis as a local gel-effect. 

For multifunctional monomers the micronon-uniformity of the polymerizing system (i.e., the availability in it the micrograins of the solid polymer with limited conversion 

At some stage of the polymerization, when the volumetric part of the propagating polymeric particles becomes essential for their mutual contact, these particles are joined (also called monolytization of the solid). The joining into the indivisible framework structure in the monolytization stage proceeds at the expense of polymerization transformations in the contact zones. 

---