Trapping bond exchange phenomenon revealed for off-stoichiometry cross-linking of phase-separated vitrimer-like materials
Takumi Kito, Mikihiro Hayashi
Abstract
, an excess of pyridine groups), free pyridine groups are located in the matrix phase. Since the bond exchange in the present system progresses in an inter-domain manner, the dissociated unit bearing pendant iodo is trapped by the free pyridine groups in the matrix, which generates other small aggregates. This trapping phenomenon greatly affects the relaxation and creep properties, which are very different from those found in conventional knowledge about vitrimer physics.
Topics & Concepts
StoichiometryRelaxation (psychology)Phase (matter)CreepTrappingMaterials scienceChemistryPolymer chemistryChemical physicsOrganic chemistryComposite materialBiologyPsychologySocial psychologyEcologyPolymer composites and self-healingPhotochromic and Fluorescence ChemistryLiquid Crystal Research Advancements