1 research outputs found
Effect of Reinforcement at Length Scale for Polyurethane Cellular Scaffolds by Supramolecular Assemblies
This
study is aimed to represent the role of carbonaceous nanofillers
to reinforce the commercially available polyurethane porous structure.
The effect of dimensionality of fillers to anchor the construction
of stable three-dimensional (3D) cellular architectures has been highlighted.
The cellular frameworks of commercially available thermoplastic polyurethane
(TPU) have been fabricated through the thermoreversible supramolecular
self-assembly route. It was established that the minimum shrinkage
of TPU lattice structures occurred when the solid-state network is
strengthened by the topologically engineered 3D hierarchical nanofillers,
where the amount of reinforcement was found to play a critical role.
It has been established by series of structure–property correlations
that reinforcing the cellular structure to endure the capillary stress
is equally effective as supercritical drying for producing low-density
porous morphologies. The removal of liquid phase from gel is as important
as the presence of 3D fillers in the matrix for reinforcing the cellular
structures when replacing the solvent phase with air to generate a
two-phase solid–gas engineered morphology. The insight into
the polyurethane network structure revealed that the dimensionality,
amount, and distribution of fillers in the matrix are critical for
reinforcing the cellular scaffolds in solid gel without any cross-linking