A new processing aid for dry-pressing: A copolymer acting as dispersant and binder

Romdhane, Mohamed Ramzi Ben; Chartier, Thierry; Baklouti, Samir; Bouaziz, Jamel; Pagnoux, Cécile; Baumard, Jean‐François

doi:10.1016/j.jeurceramsoc.2006.11.076

Cited by 32 publications

(14 citation statements)

References 25 publications

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“…These values are an order of magnitude larger as compared to dry-pressed green bodies containing polymeric binders 23 and thus, these CNF-ceramic composites are suitable for green machining, which is an industrially important pre-sintering rapid prototype shaping technique (Fig. 1c).…”

Section: Resultsmentioning

confidence: 99%

In situ generation of 3D graphene-like networks from cellulose nanofibres in sintered ceramics

et al. 2018

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Establishing a 3D electrically percolating network in an insulating matrix is key to numerous engineering and functional applications. To this end, using hydrophobic carbon nanofillers is tempting, but still results in suboptimal performance due to processing challenges. Here, we demonstrate how natural cellulose nanofibres can be in situ transformed into graphene-like sheets connected to a 3D network enhancing both the transport and the mechanical properties of sintered engineering ceramics. The network architecture also permits the decoupling of electrical and thermal conductivities, which represents a major obstacle in attaining efficient thermoelectric materials. We foresee that our transferable methodology can pave the way for the use of natural nanofibres to unravel the full potential of 3D graphene-like networks to accelerate development in fields like energy and telecommunications.

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Section: Resultsmentioning

confidence: 99%

In situ generation of 3D graphene-like networks from cellulose nanofibres in sintered ceramics

et al. 2018

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“…Spray drying requires the preparation of an aqueous suspension (dispersant, binders) which is sprayed into a stream of heated air to obtain granules. Research works [11][12][13] about suspension formulation and binder migration to the granule surface make it possible to obtain solid or hollow granules and to improve the strength of the pressed parts.…”

Section: Discussionmentioning

confidence: 99%

Agglomeration of alumina submicronparticles by silica nanoparticles: Application to processing spheres by colloidal route

Garcia-Perez

Pagnoux

Pringuet

et al. 2007

Journal of Colloid and Interface Science

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“…The viscosity measurement is applied to evaluate the degree of powder dispersion in concentrated suspensions and the effectiveness of a dispersing agent 12, 25. Usually, the viscosity of a concentrated suspension is higher if powder was agglomerated.…”

Section: Resultsmentioning

confidence: 99%

“…Acrylic acid‐based polymers such as ammonium polyacrylate, sodium polymethacrylate, and ammonium polymethacrylate (PMAAN) are commonly used as dispersants for BT, alumina, and other ceramic powders in aqueous solutions 9–13. Besides, other types of dispersants have also been disclosed.…”

Section: Introductionmentioning

confidence: 99%

Synthetic amphoteric copolymer as a dispersant for aqueous barium titanate slurries

Chen

Hsu

2010

J of Applied Polymer Sci

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was synthesized and used as a dispersion agent for barium titanate (BaTiO 3 ) (BT) particles. PMV was prepared from methacrylic acid and N-(4-vinylbenzyl)-N,Ndimethylglycinate in basic conditions through free radical polymerization. The structure of this copolymer was verified by its IR and 1 H-NMR spectra. The dispersing effects of PMV were examined and evaluated through viscosity and sedimentation measurements. The results indicate that this copolymer could uniformly disperse the particles, make the resulting suspensions less viscous and more stabilized. The dispersing ability of PMV is better than that of a commercial dispersant, ammonium polymethacrylate (PMAAN). Accordingly, the BT compacts with PMV exhibit higher dielectric constant values than those with PMAAN.

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A new processing aid for dry-pressing: A copolymer acting as dispersant and binder

Cited by 32 publications

References 25 publications

In situ generation of 3D graphene-like networks from cellulose nanofibres in sintered ceramics

In situ generation of 3D graphene-like networks from cellulose nanofibres in sintered ceramics

Agglomeration of alumina submicronparticles by silica nanoparticles: Application to processing spheres by colloidal route

Synthetic amphoteric copolymer as a dispersant for aqueous barium titanate slurries

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