Soluble organic additive effects on stress development during drying of calcium carbonate suspensions

Wedin, Pär; Lewis, Jennifer A.; Bergström, Lennart

doi:10.1016/j.jcis.2005.04.020

Cited by 39 publications

(43 citation statements)

References 24 publications

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“…The stress of pH 10 showed a similar behavior with that of pH 3, but it exhibited a lower peak and constant value, 15 MPa and 10 MPa, respectively, as shown in Fig.7a. It is reported that the peak in the stress curve of the particle-laden coating can be ascribed to the formation of a liquid meniscus among the densely packed particles, where the liquid meniscus induces capillary pressure (Wedin et al 2005). The strength of the capillary pressure was proportional to 2…”

Section: Stress Development Of the Silica/pvoh Coatings During Dryingmentioning

confidence: 99%

Particle Dispersion in Silica-Poly(vinyl alcohol) Coatings: Role of Particle-Polymer Interaction

et al. 2018

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Silica nanoparticle (SiNP)-poly(vinyl alcohol) (PVOH) coating is an important material system in paper coating applications, where particle distribution critically affects coating performance. In the present study, the authors investigated a role of physicochemical interaction between SiNP surface and PVOH chain in SiNP distribution in the coating layer, with a comparison of the suspension at pH 3 (good interaction) and pH 10 (poor interaction) as PVOH concentration was varied. Rheological properties and sedimentation behavior of the suspensions showed the dispersion stability of SiNP at pH 3 was improved by the addition of PVOH, whereas it was independent of the PVOH concentration at pH 10. Scanning electron microscopy and small angle x-ray scattering intensity of dried coating layer showed the uniform and dense structure with homogeneous distribution of SiNPs at pH 3, where spatial arrangement of SiNPs depended on the addition of PVOH. However, non-uniform and porous structures with SiNP aggregates were observed at pH 10, where the spatial arrangement of SiNPs was independent to the addition of PVOH. The stress development during drying of the coating suggested that the mechanical property was related to the spatial arrangement of individual SiNPs at pH 3, whereas to the distribution of SiNPs aggregates at pH 10.

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Section: Stress Development Of the Silica/pvoh Coatings During Dryingmentioning

confidence: 99%

Particle Dispersion in Silica-Poly(vinyl alcohol) Coatings: Role of Particle-Polymer Interaction

et al. 2018

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“…Hydroxypropyl cellulose was used as polymeric dispersant for steric ink stabilization (2 wt% of the NiO or CGO powder base). It also acted as a binder and a relief for drying stresses [35] as well as a fugitive agent in the creation of the porous scaffold. The inks were adjusted to the required viscosity range by varying the amounts of binder and diluting solvent.…”

Section: Anode and Electrolyte Inksmentioning

confidence: 99%

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Wang¹,

Tomov²,

Mitchell-Williams³

et al. 2017

J Appl Electrochem

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The effect of inkjet printing infiltration of Gd 0.1 Ce 0.9 O 2-x in NiO-Gd 0.1 Ce 0.9 O 2-x anodes on the performance of symmetrical and button cells was investigated. The anodes were fabricated by inkjet printing of suspension and sol inks. Symmetrical cells were produced from composite suspension inks on Gd 0.1 Ce 0.9 O 2-x electrolyte. As-prepared scaffolds were infiltrated with Gd 0.1-Ce 0.9 O 2 ink. Increasing the number of infiltration steps led to formation of ''nano-decoration'' on pre-sintered anodes. High resolution SEM analysis was employed for microstructural characterization revealing formation of fine anode sub-structure with nanoparticle size varying in the range of 50-200 nm. EIS tests were conducted on symmetrical cells in 4% hydrogen/argon gas flow. The measurements showed substantial reduction of the activation polarization as a function of the number of infiltrations. The effect was assigned to the extension of the triple phase boundary. The i-V testing of a reference (NiO-8 mol% Y 2 O 3 stabilized ZrO 2 /NiO-Gd 0.1 Ce 0.9 O 2-x /Gd 0.1 Ce 0.9-O 2-x /Gd 0.1 Ce 0.9 O 2-x -La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-d ) cell and an identical cell with infiltrated anode revealed *2.5 times improvement in the maximum output power at 600°C which corresponded with the reduction of the polarization resistance of the symmetrical cells at the same temperature (2.8 times). This study demonstrated the potential of inkjet printing technology as an infiltration tool for cost effective commercial SOFC processing. Graphical abstract

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“…This stress is related to the physical properties of polymer films including the Young's modulus 20 and the glass transition temperature. 24 Croll 20 reported the relationship between the Young's modulus of a polymer and the stress developed during the drying process. The drying stress increases with an increasing Young's modulus of the polymer and a decreasing volume fraction of retained solvent in the film.…”

Section: Fabrication Of Custom-built Devices S Lee Et Almentioning

confidence: 99%

“…Phosphoric acid decreases the glass transition temperature of the polymer due to the plasticization effect, 22 leading to a decrease in the drying-induced stress. 24 The drying stress also increases significantly when most of the water in the polymer film, generally 80-90%, is evaporated. 24 Therefore, the presence of a large amount of water in the PVA film with phosphoric acid also prevents the generation of stress.…”

Section: Fabrication Of Custom-built Devices S Lee Et Almentioning

confidence: 99%

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LEGO-like assembly of peelable, deformable components for integrated devices

Lee

et al. 2013

NPG Asia Mater

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The development of various technologies has led to the advent of a variety of deformable devices. Despite significant technological advancement in this area, it is still challenging to integrate different devices due to limitations such as substrate issues and differences among growth and deposition conditions. Creating an interconnection between two different devices currently requires the use of metallic wires/lines to build electrical connections. Here, we demonstrate a LEGO-like assembly of the free-standing film of individually operable components encapsulated in a polymer overcoat layer, leading to the production of an integrated architecture without additional electrical connections. The free-standing components are produced by the peeling-off process. The sticky nature of the polymer layer enables the construction of supercapacitor arrays and simple RLC circuits by interlocking the individual components. We expect that this approach will enable the fabrication of a variety of custom-built devices using a LEGO-like assembly method.

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Soluble organic additive effects on stress development during drying of calcium carbonate suspensions

Cited by 39 publications

References 24 publications

Particle Dispersion in Silica-Poly(vinyl alcohol) Coatings: Role of Particle-Polymer Interaction

Particle Dispersion in Silica-Poly(vinyl alcohol) Coatings: Role of Particle-Polymer Interaction

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

LEGO-like assembly of peelable, deformable components for integrated devices

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