Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Laetitia Urbanczyk is active.

Publication


Featured researches published by Laetitia Urbanczyk.


Clay Minerals | 2008

XRD and NMR characterization of synthetic hectorites and the corresponding surfactant-exchanged clays

A. Gerstmans; Laetitia Urbanczyk; Robert Jérôme; J.-L. Robert; Jean Grandjean

Abstract Synthetic hectorites and the corresponding surfactant-exchanged clays have been characterized by X-ray diffraction and 1H, 7Li, 13C, 23Na and 29Si solid-state nuclear magnetic resonance (NMR) spectroscopy. The low-charge clays retain water more efficiently, forming aggregates without extensive drying. The hydroxylated hectorite exhibits two 1H NMR signals near 0 ppm whereas the fluorohectorites are characterized by a single peak in the same region. The 23Na 2D 3Q magic angle spinning (MAS) spectra of the low-charge hectorites show a single peak. The 29Si NMR shift depends on the interlayer charge. Tactoids formed by the low-charge hectorites reduce the rate of surfactant incorporation. The population of the all-trans conformer of the hydrocarbon chain, determined by 13C MASNMR, varies with the surfactant content. 13C NMR relaxation data show an increase in mobility with the surfactant loading and along the long alkyl chain, from the polar head to the terminal group. Complexity of the motional behaviour precludes any detailed analysis. These modified clays are not useful in preparing poly(ε-caprolactone) nanocomposites by in situ polymerization.


Acta Materialia | 2011

Multifunctional Hybrids for Electromagnetic Absorption

Isabelle Huynen; Nicolas Quiévy; Christian Bailly; Pierre Bollen; Christophe Detrembleur; Stéphanie Eggermont; Isabel Molenberg; Jean-Michel Thomassin; Laetitia Urbanczyk; Thomas Pardoen


European Polymer Journal | 2009

Synthesis of polylactide/clay nanocomposites by in situ intercalative polymerization in supercritical carbon dioxide

Laetitia Urbanczyk; Fred Ngoundjo; Michaël Alexandre; Christine Jérôme; Christophe Detrembleur; Cédric Calberg


Polymer | 2010

Batch foaming of SAN/clay nanocomposites with scCO2: A very tunable way of controlling the cellular morphology

Laetitia Urbanczyk; Cédric Calberg; Christophe Detrembleur; Christine Jérôme; Michaël Alexandre


Polymer | 2015

Gradient Foaming of Polycarbonate/carbon nanotube based Nanocomposites with Supercritical Carbon Dioxide and their EMI Shielding Performances

Laure Monnereau; Laetitia Urbanczyk; Jean-Michel Thomassin; Thomas Pardoen; Christian Bailly; Isabelle Huynen; Christine Jérôme; Christophe Detrembleur


Polymer Engineering and Science | 2010

Morphology and properties of SAN-clay nanocomposites prepared principally by water-assisted extrusion

Michael Mainil; Laetitia Urbanczyk; Cédric Calberg; Albert Germain; Christine Jérôme; Serge Bourbigot; Jacques Devaux; Michel Sclavons


Polymer | 2008

Synthesis of PCL/clay masterbatches in supercritical carbon dioxide

Laetitia Urbanczyk; Cédric Calberg; Fabrice Stassin; Michaël Alexandre; Robert Jérôme; Christine Jérôme; Christophe Detrembleur


Langmuir | 2006

Motional heterogeneity of intercalated species in modified clays and poly(epsilon-caprolactone)/clay nanocomposites.

Laetitia Urbanczyk; Jana Hrobarikova; Cédric Calberg; Robert Jérôme; Jean Grandjean


Journal of Materials Chemistry | 2008

Poly(caprolactone)/clay masterbatches prepared in supercritical CO2 as efficient clay delamination promoters in poly(styrene-co-acrylonitrile)

Laetitia Urbanczyk; Cédric Calberg; Samira Benali; Serge Bourbigot; Eliane Espuche; Fabrice Gouanvé; Philippe Dubois; Albert Germain; Christine Jérôme; Christophe Detrembleur; Michaël Alexandre


Journal of Materials Chemistry | 2010

Preparation of fire-resistant poly(styrene-co-acrylonitrile) foams using supercritical CO2 technology

Laetitia Urbanczyk; Serge Bourbigot; Cédric Calberg; Christophe Detrembleur; Christine Jérôme; Frédéric Boschini; Michaël Alexandre

Collaboration


Dive into the Laetitia Urbanczyk's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Isabelle Huynen

Université catholique de Louvain

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Christian Bailly

Université catholique de Louvain

View shared research outputs
Researchain Logo
Decentralizing Knowledge