Premium
Polycondensation of ‘a − b n ’ or ‘a 2 + + b n ’ Monomers ‐ A Comparison
Author(s) -
Kricheldorf Hans R.
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700261
Subject(s) - monomer , condensation polymer , yield (engineering) , polymer , polymerization , polymer chemistry , materials science , chemistry , polymer science , organic chemistry , composite material
Characteristic similarities and differences in polycondensations of ‘a − b’ and ‘a 2 + b 2 ’ monomers are described including cyclic ‘a − b’ and cyclic ‘a 2 ’ monomers. Polycondensations of ‘ab 3 ’ monomers that yield (hyper)branched polymers are compared with polycondensations of ‘a 2 + b 3 ’ monomers that yield (hyper)branched, multicylic, or crosslinked polymers. In all cases the influence of cyclization reactions on structure and molecular weight of the reaction products is considered. Furthermore, the definitions of polycondensation and condensative chain polymerization are discussed along with a differentiation between kinetically controlled and thermodynamically controlled polycondensations.