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Changements dans la structure des gels de polymères à liaisons croisées pendant le séchage et la congélation.

Changes in the bead structure of crosslinked polymer gels during drying and freezing.

Auteurs : RUIKE M., TAKADA S., MURASE N., WATANABE T.

Type d'article : Article

Résumé

Changes in the bead structure of crosslinked polymer gels during freezing and drying were monitored by the use of an environmental scanning electron microscope. Gel beads with higher crosslink densities, as a result, hardly changed their appearance during freezing and drying. On the other hand, those with lower crosslink densities changed significantly. The observation that freezing and drying of polymer gels are influenced by the density of crosslinks can be explained by taking flexibility of the polymer network into account, where gels with lower crosslink densities are more flexible than those with higher crosslink densities.

Détails

  • Titre original : Changes in the bead structure of crosslinked polymer gels during drying and freezing.
  • Identifiant de la fiche : 1999-3876
  • Langues : Anglais
  • Source : Cryo-Letters - vol. 20 - n. 1
  • Date d'édition : 01/1999
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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