The term, synthetic polymer, denotes a macromolecule composed of simple structural units and usually derived from monomers by a process of polymerization. This process is possible only if certain chemical, thermodynamical, and mechanistic conditions are satisfied. The monomer must have a functionality of two or higher. The polymerization process must be characterized by a negative free energy c...

Materials and General Considerations. Unless noted otherwise, all manipulations of ruthenium complexes were carried out under an inert atmosphere using standard glovebox or Schlenk techniques. Toluene was distilled from sodium under argon. Demineralised water was distilled under nitrogen and degassed three times after distillation. Ruthenium alkylidenes 2 and 3 were supplied by Aldrich. NMR spe...

Polymerization reactions are commonly effected by exposing monomer formulations to some initiation stimulus such as elevated temperature, light, or a chemical reactant. Increasingly, these polymerization reactions are mediated by enzymes--catalytic proteins--owing to their reaction efficiency under mild conditions as well as their environmental friendliness. The utilization of enzymes, particul...

Title of Document: HETEROPHASE STEP-GROWTH POLYMERIZATION IN A CONTINUOUS TUBULAR REACTOR Woo Jic Yang, Master of Science, 2013 Directed By: Professor Kyu Yong Choi Department of Chemical and Biomolecular Engineering The interfacial process is a well-established industrial process for the production of Bisphenol A polycarbonates. However, there is a dearth of kinetic analyses of the interfacial...

a new model based on a combination of the polymeric multigrain and multilayer models has been developed to predict the polymerization rate, particle growth, morphology, effective parameters on broadening of the molecular weight distribution, number and weight average of the molecular weight, isotacticity index and bulk density of polymer. mathematical correlations and the kinetics used in this ...

Step-growth radical copolymerization between a,u-diiodoperfluoroalkanes (A) and a,u-unconjugated dienes (B) proceeds efficiently through a photo-induced Step Transfer-Addition & Radical-Termination (START) strategy in aqueous/organic biphasic system. The addition of water in our polymerization strategy enhanced the overall polymerization efficiency and inhibited the function loss (C–I) signific...

A new model based on a combination of the polymeric multigrain and multilayer models has been developed to predict the polymerization rate, particle growth, morphology, effective parameters on broadening of the molecular weight distribution, number and weight average of the molecular weight, isotacticity index and bulk density of polymer. Mathematical correlations and the kinetics used in t...

We report a method to efficiently prepare multisegmented polymers via combination of step-growth (SG) and reversible addition-fragmentation chain transfer (RAFT) polymerization.