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Article Dans Une Revue Journal of Chemical Physics Année : 2012

Effect of molybdenum on the structure formation of resorcinol - formaldehyde hydrogel studied by coherent X-Ray scattering

Résumé

A detailed study on the effect of Mo on the gelation process of resorcinol-formaldehyde systems is presented. The evolution of the system was followed by x-ray photon correlation spectroscopy, which allows in situ investigation of the dynamics as well as of the structural evolution in nonequilibrium processes. The Mo was introduced into the system after a pre-polymerization period (PP), the effect of which was also examined. Our results show that the presence of Mo substantially modifies the gelation process by favoring the growth of large compact clusters with weak bonds between them. However, this effect can be reduced by increasing PP.
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Dates et versions

hal-00817200 , version 1 (24-04-2013)

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Orsolya Czakkel, Balazs Nagy, Erik Geissler, Krisztina Laszlo. Effect of molybdenum on the structure formation of resorcinol - formaldehyde hydrogel studied by coherent X-Ray scattering. Journal of Chemical Physics, 2012, 136, pp.234907. ⟨10.1063/1.4729465⟩. ⟨hal-00817200⟩

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