step-growth polymerization

GPTKB entity

Statements (33)
Predicate Object
gptkbp:instanceOf polymerization process
gptkbp:alsoKnownAs condensation polymerization
gptkbp:application plastics
fibers
coatings
gptkbp:byproduct gptkb:water
gptkb:methanol
hydrochloric acid
gptkbp:characterizedBy monomers react to form oligomers and polymers at each step
gptkbp:commonIn industrial polymer production
gptkbp:contrastsWith chain-growth polymerization
gptkbp:discoveredBy gptkb:Wallace_Carothers
gptkbp:discoveredIn 1929
gptkbp:example PET synthesis
nylon synthesis
gptkbp:feature high conversion required for high molecular weight
https://www.w3.org/2000/01/rdf-schema#label step-growth polymerization
gptkbp:kinetics second order
gptkbp:launched catalyst or heat
gptkbp:limitation difficult to achieve very high molecular weights without high conversion
gptkbp:mechanismOfAction random combination of monomers, dimers, oligomers, and polymers
gptkbp:molecularWeightDistribution gptkb:broadcaster
gptkbp:monomerType monomers with two or more reactive groups
gptkbp:produces epoxy resins
polyurethanes
polyesters
polyamides
gptkbp:requires bifunctional or multifunctional monomers
stoichiometric balance of functional groups
gptkbp:type condensation reaction
addition-elimination reaction
gptkbp:bfsParent gptkb:Flory–Stockmayer_theory
gptkbp:bfsLayer 7