Hybrid polymer networks

Fig. 7 Molecular and structural schematics of hybrid polymer network scaffold comprised of chitosan-embedded collagen scaffold crosslinked by PEG-DBA and EDC/NHS [96]...

Wang, S., Kempen, D.H., Simha, N.X., Lewis, J.L., Windebank, A.J., Yaszemski, M.J. et al. (2008) Photo-cross-linked hybrid polymer networks consisting of poly(propylene fumarate) and poly(caprolactone fumarate) controlled physical properties and regulated bone and nerve cell responses. Biomacromolecules, 9 (4), 1229—1241. 

Table 24.2 Comparative properties of polyester matrix and hybrid polymer network matrix jute...

Property Unsaturated polyester resin Hybrid polymer network (HPN) HPN with chain extender Polyester- polyurethane network... 

Fig. 24.3 SEM micrographs showing fractured surface under tensile mode (a) unsaturated polyester/jute composite, (b) hybrid polymer network/jute composite...

Gunduz G, Erol D, Akkas N (2005) Mechanical properties of unsaturated polyester-isocyanate hybrid polymer network and its E-glass fiber reinforced composites. J Compos Mater 39 1577-1589... 

The possibility to probe in some cases a compositional heterogeneity, e.g., the miscibility degree on the nanoscale level in single-phase materials such as miscible blends, or a local heterogeneity of cross-linking in the hybrid polymer networks. 

Transmission Electron Microscopy (TEM) and Atomic Force Microscopy (AFM) followed by dynamic mechanical parameter tests were used for the investigation of the morphology of unsaturated polyester/diol-polyurethane hybrid polymer networks (UP/PU HPNs). The effect of phase separation on mechanical properties was described [142]. 

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