Herstellung hochporöser Materialien auf Basis von Kapillarsuspensionen mit Polymerbrücken

Hauf, Katharina; Koos, Erin

doi:10.1002/cite.201650147

Cited by 1 publication

(2 citation statements)

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“…Experiments in systems where the secondary fluid is polymerized or cross-linked have also been conducted. 79,80 While the properties affecting the strength of the capillary interactions, that is, interfacial tension and contact angle, are modified during this process, a samplespanning network of particles connected by the bridges is still present. In fact, this method can be combined with different chemical reactions, for example, a reducing agent, which can be used to reduce the oxidation of conductive particles.…”

Section: Discussionmentioning

confidence: 99%

“…While this research concentrated on systems without any chemical reactions, this research can also be applied to systems where reactions between the two fluids or between one of the fluids and particles take place. Experiments in systems where the secondary fluid is polymerized or cross-linked have also been conducted. , While the properties affecting the strength of the capillary interactions, that is, interfacial tension and contact angle, are modified during this process, a sample-spanning network of particles connected by the bridges is still present. In fact, this method can be combined with different chemical reactions, for example, a reducing agent, which can be used to reduce the oxidation of conductive particles.…”

Section: Discussionmentioning

confidence: 99%

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Suppressing Crack Formation in Particulate Systems by Utilizing Capillary Forces

Schneider

Maurath

Fischer

et al. 2017

ACS Appl. Mater. Interfaces

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Cracks, formed during the drying of particulate films, can reduce the effectiveness or even render products useless. We present a novel, generic approach to suppress crack formation in thin films made from hard particle suspensions, which are otherwise highly susceptible to cracking, using the capillary force between particles present when a trace amount of an immiscible liquid is added to a suspension. This secondary liquid preserves the particle cohesion, modifying the structure and increasing the drying rate.Crack-free films can be produced at thicknesses much greater than the critical cracking thickness for a suspension without capillary interactions, and even persists after sintering. This capillary suspension strategy is applicable to a broad range of materials including suspensions of metals, semiconductive and ceramic oxides or glassy polymeric particles and can be easily implemented in many industrial processes since it is based on well-established unit operations. Promising fields of application include ceramic foils and printed electronic devices.1

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%