Physical gels of poly(vinylamine) by thermal curing
Thorsten Fischer1, Jens Köhler1, Martin Möller1,2
1DWI-Leibniz-Institute for Interactive Materials, e.V., RWTH Aachen University Forckenbeckstraße 50 D-52074 Aachen Germany singh@dwi.rwth-aachen.de.
Abstract:
Physical gels are a versatile class of materials which can find application in sensors, electrochemistry, biomedicine or rheological modifiers. Herein, we present a hydrogen-bonded physical gel which is based on the interaction between phenylcarbonate telechelic poly(ethylene glycol) (PEG-PC) and poly(vinyl amine-co-acetamide) (p(VAm-co-VAA)). The critical gelation concentration was found to be 10 wt% by rheology and NMR. UV-vis spectroscopy and dynamic light scattering reveal the formation of aggregates in the gel. Rheology and differential scanning calorimetry (DSC) was used to show the effect of thermal curing on the mechanical properties of the physical gel.
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