Abstract
The highest molecular weight polymers are obtained under strictly controlled stoichiometric conditions, that is to say, an exact 1:1 molar ratio of two functional groups is necessary according to the classical theory of polycondensation. It has been found that an excess of one functional group yields high-molecular-weight polymers comparable to those prepared under stoichiometrically balanced conditions. In this chapter, nonstoichiometric polycondensation is described by categorizing polycondensation into that caused by the change in reactivity, and that caused by the change in the structures of polymers. That is, nonstoichiometric polycondensations are categorized based on the chemical effect and the physical effect.
| Original language | English |
|---|---|
| Title of host publication | Polymer Science |
| Subtitle of host publication | A Comprehensive Reference, 10 Volume Set |
| Publisher | Elsevier |
| Pages | 95-113 |
| Number of pages | 19 |
| Volume | 5 |
| ISBN (Print) | 9780080878621 |
| DOIs | |
| Publication status | Published - Dec 1 2012 |
Keywords
- Morphology
- Nonstoichiometry
- Nucleation-elongation polycondensation
- Palladium-catalyzed polycondensation
- Phase transfer catalyzed polycondensation
- Polycondensation
- Polycondensation of α,α-dihalomonomers
- Polycondensation using reaction-induced crystallization
- Step-growth
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)