Fluorescence of Polymers at Interfaces: Polymerization, Relaxations, and Imaging

Baselga, Juan; Piérola, Inés F.; Serrano, Berna; Pozuelo, Javier; Cabanelas, Juan Carlos; Martín, Olga

doi:10.1007/978-1-4419-9828-6_13

Cited by 2 publications

(1 citation statement)

References 112 publications

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“…With this purpose, a fluorescent reporter will be placed on one end of several molecular spacers of varying size tethering both the probe and the nanofiller. The fluorescence of molecular probes is in fact an appreciated technique to study polymer materials [34]. It can provide information on a scale smaller than conventional light scattering and comparable to SANS [35].…”

Section: Introductionmentioning

confidence: 99%

Interfacial characterization of epoxy/silica nanocomposites measured by fluorescence

Antonelli

Serrano

Baselga

et al. 2015

European Polymer Journal

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Fluorescence labeling was used as a tool for the interfacial characterization of nanocom-posites. The solvatochromic probe dansyl chloride was employed as interfacial reporter in epoxy/silica nanocomposites. Molecular spacers (organosiloxanes and polyetheramines) of different lengths were used to vary the location of the chromophore at the interface. The steady state and time resolved fluorescent responses reflect a rigid polar interface. Fluores-cence changes during heating at a constant rate were analyzed for determining the local glass transition (T g ) at the interface region. The fluorescence results were then compared to the T g obtained from differential scanning calorimetry and the results showed the existence of a gradient interface of a few nanometers thick having different properties than the bulk matrix. The thickness of this interface is small but its altered dynamics due to strong interactions with the nanofiller spreads its influence throughout the whole matrix.

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Section: Introductionmentioning

confidence: 99%

Interfacial characterization of epoxy/silica nanocomposites measured by fluorescence

Antonelli

Serrano

Baselga

et al. 2015

European Polymer Journal

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Fluorescence probes the early formation of network at the interface of epoxy–silica nanocomposite during curing

et al. 2014

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The effect of surface modified silica on the cure behavior at the interface of epoxy-silica nanocomposites has been analyzed monitoring the fluorescence of the dansyl probe located at different distances from the silica surface by means of molecular tethers. FTIR analysis revealed the catalytic role of the surface hydroxyls, which is modulated by the surface modification. Fluorescence results show that network formation and associated phenomena as gelation and vitrification occurs first at the interface. The exchange of branched species throughout the permeable interface spreads its influence to the whole system until vitrification is reached.

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Fluorescence of Polymers at Interfaces: Polymerization, Relaxations, and Imaging

Cited by 2 publications

References 112 publications

Interfacial characterization of epoxy/silica nanocomposites measured by fluorescence

Interfacial characterization of epoxy/silica nanocomposites measured by fluorescence

Fluorescence probes the early formation of network at the interface of epoxy–silica nanocomposite during curing

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