The cure mechanism is actually a step-growth polymerization
that results in linear polymers of exceptionally high molecular weight with no evidence of covalent crosslinking to the limits of detection.
Although particular attention was paid to chain growth mechanisms [2, 3], step-growth polymerization
systems have also been used to produce block copolymers.
Usually, a step-growth Polymerization
is relatively slow and must be continued to a very high conversion to attain sufficiently high molecular weights.
PPG Industries has received a patent for a compound that is comprised of the reaction product of a highly branched polymer having terminal amine functional groups and a lactam, wherein the highly branched polymer is the step-growth polymerization
reaction product of a polyfunctional first monomer having a first functional group and a polyfunctional second monomer having a second functional group wherein the first and second functional groups will react with each other but not themselves, wherein formation of the highly branched polymer is free of self-condensation of the polyfunctional first monomer, and free of self-condensation of the polyfunctional second monomer.
process modeling and product design.
Linear Step-Growth Polymerization
of DGEBA + Aniline", Journal of Applied Polymer Science, vol.
The firm created the macromonomer and discovered an unprecedented class of materials when the macromonomer was subjected to a second step-growth polymerization
He made significant contributions to the literature on step-growth polymerization
reaction engineering, optimization of polymerization reactors and process simulation.
It starts by introducing chain molecules, then proceeds to step-growth polymerization
, chain-growth polymerization, copolymers, microstructure, stereo-regularity, polymer conformations, thermodynamics of polymer solutions, light scattering by polymer solutions, dynamics of dilute polymer solutions, networks, gels, rubber elasticity, linear viscoelasticity, glass transition, and crystalline polymers.
The molecular weight (MW) of PLLA is a significant determinant of the quality of its products and can be tailored while synthesizing it through step-growth polymerization
of lactic acid or chain-growth polymerization of lactide dimer, both in bulk as well as in solution state (3).
14), produces novel segmented PCL-based polyurethane/clay nanocomposites by step-growth polymerization
of diphenylmethane dusocyanate, butanediol and preformed polycaprolactone diol.
A batch, step-growth polymerization
system has three monomers: [.