Low toxicity binder systems for tape cast Ce0.9Gd0.1O1.95 laminates

Trine Klemensø; Mohan Menon; Severine Ramousse

doi:10.1016/j.ceramint.2009.10.019

Low toxicity binder systems for tape cast Ce0.9Gd0.1O1.95 laminates

Trine Klemensø, Mohan Menon, Severine Ramousse

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Conventional binder systems for tape casting contain toxic phthalate plasticizers and butanone (MEK) as part of the solvent. The effects of exchanging the phthalate with a non-toxic alternative, and butanone with ethanol, were studied on laminates of high-green density CGO (Ce0.9Gd0.1O1.95) tapes. Samples were prepared with a binder system containing DBP (dibutyl phthalate) plasticizer and MEK solvent, and with a binder system based on a non-toxic non-phthalate plasticizer and ethanol. In both systems, the weight ratio of plasticizer to the PVB (polyvinyl butyral) binder was varied between 0.4 and 0.7. Substitution to the less toxic binder system had no adverse impacts on the microstructure. In fact, denser packing and improved homogeneity were observed with the non-phthalate-based system at ratio 0.5 indicating improved dispersion in this system. The denser packing also coincided with a maximum in z-shrinkage and molecular weight of the binder system, which could be related to the distribution of the binder system.

Original language	English
Journal	Ceramics International
Volume	36
Issue number	2
Pages (from-to)	773-780
ISSN	0272-8842
DOIs	https://doi.org/10.1016/j.ceramint.2009.10.019
Publication status	Published - 2010

Keywords

Solid Oxide Fuel Cells
Fuel Cells and hydrogen

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title = "Low toxicity binder systems for tape cast Ce0.9Gd0.1O1.95 laminates",

abstract = "Conventional binder systems for tape casting contain toxic phthalate plasticizers and butanone (MEK) as part of the solvent. The effects of exchanging the phthalate with a non-toxic alternative, and butanone with ethanol, were studied on laminates of high-green density CGO (Ce0.9Gd0.1O1.95) tapes. Samples were prepared with a binder system containing DBP (dibutyl phthalate) plasticizer and MEK solvent, and with a binder system based on a non-toxic non-phthalate plasticizer and ethanol. In both systems, the weight ratio of plasticizer to the PVB (polyvinyl butyral) binder was varied between 0.4 and 0.7. Substitution to the less toxic binder system had no adverse impacts on the microstructure. In fact, denser packing and improved homogeneity were observed with the non-phthalate-based system at ratio 0.5 indicating improved dispersion in this system. The denser packing also coincided with a maximum in z-shrinkage and molecular weight of the binder system, which could be related to the distribution of the binder system.",

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author = "Trine Klemens{\o} and Mohan Menon and Severine Ramousse",

year = "2010",

doi = "10.1016/j.ceramint.2009.10.019",

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journal = "Ceramics International",

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TY - JOUR

T1 - Low toxicity binder systems for tape cast Ce0.9Gd0.1O1.95 laminates

AU - Klemensø, Trine

AU - Menon, Mohan

AU - Ramousse, Severine

PY - 2010

Y1 - 2010

N2 - Conventional binder systems for tape casting contain toxic phthalate plasticizers and butanone (MEK) as part of the solvent. The effects of exchanging the phthalate with a non-toxic alternative, and butanone with ethanol, were studied on laminates of high-green density CGO (Ce0.9Gd0.1O1.95) tapes. Samples were prepared with a binder system containing DBP (dibutyl phthalate) plasticizer and MEK solvent, and with a binder system based on a non-toxic non-phthalate plasticizer and ethanol. In both systems, the weight ratio of plasticizer to the PVB (polyvinyl butyral) binder was varied between 0.4 and 0.7. Substitution to the less toxic binder system had no adverse impacts on the microstructure. In fact, denser packing and improved homogeneity were observed with the non-phthalate-based system at ratio 0.5 indicating improved dispersion in this system. The denser packing also coincided with a maximum in z-shrinkage and molecular weight of the binder system, which could be related to the distribution of the binder system.

AB - Conventional binder systems for tape casting contain toxic phthalate plasticizers and butanone (MEK) as part of the solvent. The effects of exchanging the phthalate with a non-toxic alternative, and butanone with ethanol, were studied on laminates of high-green density CGO (Ce0.9Gd0.1O1.95) tapes. Samples were prepared with a binder system containing DBP (dibutyl phthalate) plasticizer and MEK solvent, and with a binder system based on a non-toxic non-phthalate plasticizer and ethanol. In both systems, the weight ratio of plasticizer to the PVB (polyvinyl butyral) binder was varied between 0.4 and 0.7. Substitution to the less toxic binder system had no adverse impacts on the microstructure. In fact, denser packing and improved homogeneity were observed with the non-phthalate-based system at ratio 0.5 indicating improved dispersion in this system. The denser packing also coincided with a maximum in z-shrinkage and molecular weight of the binder system, which could be related to the distribution of the binder system.

KW - Solid Oxide Fuel Cells

KW - Fuel Cells and hydrogen

KW - Brændselsceller og brint

U2 - 10.1016/j.ceramint.2009.10.019

DO - 10.1016/j.ceramint.2009.10.019

M3 - Journal article

SN - 0272-8842

VL - 36

SP - 773

EP - 780

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -

Low toxicity binder systems for tape cast Ce0.9Gd0.1O1.95 laminates

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