Evidence for phase transitions of aqueous gelatin gels in a centrifugal field

Borchard, W.; Cölfen, Helmut; Kisters, D.; Straatmann, A.

Evidence for phase transitions of aqueous gelatin gels in a centrifugal field

Dateien

Zu diesem Dokument gibt es keine Dateien.

Datum

2002

Autor:innen

Borchard, W.

Cölfen, Helmut

Kisters, D.

Straatmann, A.

DOI (zitierfähiger Link)

https://doi.org/10.1007/3-540-44672-9_15

Sammlungen

Chemie

Publikationstyp

Beitrag zu einem Konferenzband

Publikationsstatus

Published

Erschienen in

BORCHARD, W., ed., A. STRAATMANN, ed.. Analytical Ultracentrifugation VI. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002, pp. 101-112. Progress in Colloid and Polymer Science. 119. ISBN 978-3-540-42489-5. Available under: doi: 10.1007/3-540-44672-9_15

Zusammenfassung

Experimental findings of turbid zones in the schlieren patterns of gels in a centrifugal field are explained by a demixing of gels into a highly swollen gel coexisting with a collapsed gel. The thermodynamic analysis of a slightly cross-linked aqueous gel at relatively low centrifugal field, which remains clear, leads to the conclusion that the system is close to its stability limit. A procedure is proposed to show how the stability limits may be extrapo lated by means of ultracentrifugal measurements. The phenomena are separated into a transient and a permanent demixing. The permanent demixing has been qualitatively explained by use of state diagrams predicted recently by Khokhlov and coworkers, Ilavsky and also by Moerkerke et al.

Fachgebiet (DDC)

540 Chemie

Konferenz

Symposium on Analytical Ultracentrifugation, 1. März 2001 - 2. März 2001, Duisburg

Zitieren

ISO 690

BORCHARD, W., Helmut CÖLFEN, D. KISTERS, A. STRAATMANN, 2002. Evidence for phase transitions of aqueous gelatin gels in a centrifugal field. Symposium on Analytical Ultracentrifugation. Duisburg, 1. März 2001 - 2. März 2001. In: BORCHARD, W., ed., A. STRAATMANN, ed.. Analytical Ultracentrifugation VI. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002, pp. 101-112. Progress in Colloid and Polymer Science. 119. ISBN 978-3-540-42489-5. Available under: doi: 10.1007/3-540-44672-9_15

BibTex

@inproceedings{Borchard2002Evide-40690,
  year={2002},
  doi={10.1007/3-540-44672-9_15},
  title={Evidence for phase transitions of aqueous gelatin gels in a centrifugal field},
  number={119},
  isbn={978-3-540-42489-5},
  publisher={Springer Berlin Heidelberg},
  address={Berlin, Heidelberg},
  series={Progress in Colloid and Polymer Science},
  booktitle={Analytical Ultracentrifugation VI},
  pages={101--112},
  editor={Borchard, W. and Straatmann, A.},
  author={Borchard, W. and Cölfen, Helmut and Kisters, D. and Straatmann, A.}
}

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