Christophe Chassenieux

Institut des Molécules et Matériaux du Mans

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Taco Nicolaï

Institut des Molécules et Matériaux du Mans

Olivier Colombani

Institut des Molécules et Matériaux du Mans

Lazhar Benyahia

Institut des Molécules et Matériaux du Mans

Gireeshkumar Balakrishnan

Institut des Molécules et Matériaux du Mans

Laurent Bouteiller

Institut Parisien de Chimie Moléculaire

Christophe Schmitt

Nestlé (Switzerland)

Fabienne Lagarde

Le Mans Université

Marli Miriam de Souza Lima

Le Mans Université

Bach T. Nguyen

Nha Trang University

АХ

А.М. Харламова

Laboratoire de Chimie Moléculaire

Cooperative Institutions

Centre National de la Recherche Scientifique

162

Sorbonne Université

Le Mans Université

Institut des Molécules et Matériaux du Mans

Université Nantes Angers Le Mans

Université Toulouse III - Paul Sabatier

Université de Toulouse

Laboratoire de Chimie des Polymères Organiques

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

ESPCI Paris

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CCDC 220424: Experimental Crystal Structure Determination

The Cambridge Structural Database (2003)

Samuel Dagorne L. Lavanant R. Welter Christophe Chassenieux Pierre Haquette

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc7dcgf

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Citations (0)

CCDC 220426: Experimental Crystal Structure Determination

The Cambridge Structural Database (2003)

Samuel Dagorne L. Lavanant R. Welter Christophe Chassenieux Pierre Haquette

10.5517/cc7dcjh

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New covalent bonded polymer–calcium silicate hydrate composites

Journal of Materials Chemistry (2006)

Alexandre Franceschini Sébastien Abramson Valerio Mancini Bruno Bresson Christophe Chassenieux

New covalent bonded polymer–calcium silicate hydrate (C–S–H) composites were prepared. For this purpose, two sets of hydrosoluble copolymers, both containing trialkoxysilane (T-silane) and/or methyldialkoxysilane (D-silane) functions, were synthesized. The addition of these polymers during the synthesis of C–S–H by the sol–gel method allowed us to obtain hybrid materials. The influence of different synthesis parameters, such as the silane content and the nature of the silane functions grafted to the polymer backbone, was studied. Characterisation of the composite materials by thermogravimetry and elemental analysis showed that chemical interaction of polymers and C–S–H is due only to the presence of T-silane functions. 29Si CP MAS NMR analysis confirmed the existence of covalent linkages between the inorganic silicate chains of the C–S–H crystallites and the T-silane functions. The specific incorporation of these new classes of silane-modified polymers in C–S–H structure may be successfully used in the preparation of new polymer–cement composites with reinforced mechanical properties.

Calcium silicate hydrate

Calcium silicate

Thermogravimetry

Hybrid material

10.1039/b613077a

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Citations (80)

Stabilization of Water-in-Water Emulsions by Polysaccharide-Coated Protein Particles

Langmuir (2016)

Rilton Alves de Freitas Taco Nicolaï Christophe Chassenieux Lazhar Benyahia

The phase diagram of mixtures of xyloglucan (XG) and amylopectin (AMP) in aqueous solution is presented. Water-in-water emulsions prepared from mixtures in the two-phase regime were studied in detail, and the interfacial tension was determined. It is shown that the emulsions can be stabilized by addition of β-lactoglobulin microgels (βLGm), but only at pH ≤ 5.0. Excess βLGm preferentially entered the AMP phase at pH > 5.0 and the XG phase at lower pH. The inversion was caused by adsorption of XG onto βLGm that started below pH 5.5. It is shown that modification of the surface of particles by coating with polysaccharides is a potential lever to control stabilization of water-in-water emulsions.

Xyloglucan

Aqueous two-phase system

10.1021/acs.langmuir.5b03761

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Citations (89)

Xyloglucan–Cellulose Nanocrystals Mixtures: A Case Study of Nanocolloidal Hydrogels and Levers for Tuning Functional Properties

Gels (2024)

Géraldine Rangel Céline Moreau Ana Villares Christophe Chassenieux Bernard Cathala

The development of fully biobased hydrogels obtained by simple routes and in the absence of toxic or environmentally harmful reagents is a major challenge in meeting new societal demands. In this work, we discuss the development of hydrogels made from cellulose nanocrystals (CNCs) and xyloglucan (XG), two non-toxic, renewable, and biobased components. We present three strategies to fine-tune the functional properties. The first one consists in varying the XG/CNC ratio that leads to the modulation of the mechanical properties of hydrogels as well as a better comprehension of the gel mechanism formation. The second relies on tuning the XG chains' interaction by enzymatic modification to achieve thermoresponsive systems. Finally, the third one is based on the increase in the hydrogel solid content by osmotic concentration. The high-solid-content gels were found to have very high mechanical properties and self-healing properties that can be used for molding materials. Overall, these approaches are a case study of potential modifications and properties offered by biobased nanocolloidal hydrogels.

Xyloglucan

10.3390/gels10050334

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Elaboration and rheological characterization of nanocomposite hydrogels containing C₆₀ fullerene nanoplatelets

Soft Matter (2023)

Théo Merland Mathieu Berteau Marc Schmutz Stéphanie Legoupy Taco Nicolaï

Nanocomposite hydrogels were elaborated that consisted of a physical network formed by an amphiphilic polymer in which C

Elaboration

Characterization

10.1039/d3sm01559a

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Effect of the pH and NaCl on the microstructure and rheology of mixtures of whey protein isolate and casein micelles upon heating

Food Hydrocolloids (2017)

Bach T. Nguyen Christophe Chassenieux Taco Nicolaï Christophe Schmitt

Syneresis

Whey protein isolate

10.1016/j.foodhyd.2017.03.013

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Citations (45)

Dynamic polymeric micelles versus frozen nanoparticles formed by block copolymers

Soft Matter (2010)

Taco Nicolaï Olivier Colombani Christophe Chassenieux

In selective solvents the solvophobic blocks of block copolymers associate leading to the formation of aggregates. If exchange of polymer chains between aggregates is rapid the system reaches equilibrium and the aggregates are dynamic. However, in many cases kinetically frozen aggregates are formed. In this highlight we review experimental and theoretical work focused on the kinetics of the formation of aggregates by block copolymers and on the rate of exchange of polymers between aggregates at steady state. We will illustrate the importance of the exchange dynamics by their effect on gels and ordered phases formed by block copolymers in solution.

Solvophobic

10.1039/b925666k

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Citations (293)

Elongation of Telechelic Ionomers under Shear: a Rheological and Rheo-optical Study

Macromolecules (2000)

Christophe Chassenieux Jean‐François Tassin Jean‐François Gohy Robert Jérôme

The behavior under shear of solutions of α,ω-lithium sulfonato polystyrene (α,ω-LiPSS100) in toluene has been investigated by rheo-optics and rheology. Shear-thickening is observed and related to a strong increase of birefringence and a pronounced and rapid alignment of the polymer chains toward the flow direction leading to an important elasticity of the fluids. The draw ratio of the polymer chains under shear has been estimated from the rheo-optical data. When the fraction of loops is taken into account, draw ratios on the order of 4 are calculated in the shear thickening regime.

Dilatant

Flow birefringence

Polystyrene

Elongation

Telechelic polymer

10.1021/ma991707c

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Citations (19)

Thermoresponsive Hydrogels Based on Telechelic Polyelectrolytes: From Dynamic to “Frozen” Networks

Macromolecules (2018)

Constantinos Tsitsilianis George Serras Chia‐Hsin Ko Florian A. Jung Christine M. Papadakis

A novel thermoresponsive gelator of (B-co-C)-b-A-b-(B-co-C) topology, comprising a poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) weak polyelectrolyte as central block, end-capped by thermosensitive poly(triethylene glycol methyl ether methacrylate/n-butyl methacrylate) [P(TEGMA-co-nBuMA)] random copolymers, was designed and explored in aqueous media. The main target of this design was to control the dynamics of the stickers by temperature as to create an injectable hydrogel that behaves as a weak gel at low temperature and as a strong gel at physiological temperature. Indeed, at low temperatures, the system behaves like a viscoelastic complex fluid (dynamic network), while at higher temperatures, an elastic hydrogel is formed ("frozen" network). The viscosity increases exponentially upon heating, about 5 orders of magnitude from 5 to 45 °C, which is attributed to the exponential increase of the lifetime of the self-assembled stickers. The integration of thermo- and shear responsive properties in the gelator endows the gel with injectability. Moreover, the gel can be rapidly recovered upon cessation of the applied stress at 37 °C, simulating conditions similar to those of injection through a 28-gauge syringe needle. All these hydrogel properties render it a good candidate for potential applications in cell transplantation through injection strategies.

Telechelic polymer

10.1021/acs.macromol.8b00193

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Citations (49)