Novel side-chain dendritic polyurethanes based on hydrogen bonding rich polyurea/malonamide dendrons
Journal
Macromolecular Materials and Engineering
Journal Volume
291
Journal Issue
4
Pages
395-404
Date Issued
2006
Author(s)
Abstract
Hydrogen bonding rich polyurea/malonamide dendrons have been utilized as building blocks for the synthesis of novel SCDPUs. The resulting microstructure of soft-rich domains reinforced by these side chain rigid dendritic domains via strong hydrogen bonding interactions was explored for these segmented polyurethanes. DSC and FT-IR results indicate that certain degrees of phase separation are present between rigid dendritic structures and soft PTMO domains. The phase separation structures are in the order of 100 nm based on the results of AFM and SAXS. The tensile measurements show that the incorporation of dendritic side chain structures as the hard segments can enhance the mechanical properties of these fabricated polymers. © 2006 WM.KY-VCH Verlag GmbH & Co. KGaA.
Type
journal article