Thermoreversible gelation of cellulose acetate solutions studied by differential scanning calorimetry

F.W. Altena, J.S. Schroder, R. van de Huls, C.A. Smolders

Research output: Contribution to journalArticleAcademic

11 Citations (Scopus)
164 Downloads (Pure)

Abstract

Thermoreversible gels of cellulose acetate can be obtained by cooling concentrated cellulose acetate solutions in solvent-nonsolvent mixtures of dioxane and water. Upon heating the gels, endothermic effects were observed with differential scanning calorimetry. The heat effects are ascribed to the melting of a crystalline phase consisting of cellulose triacetate units. The endothermic peaks appear only after long aging periods of up to several days. Melting points generally decrease and heats of melting increase with increasing polymer concentration and with increasing nonsolvent content. The maximum degree of crystallinity is estimated as 8%. The kinetic effects of varying the water content in the solvent mixture are discussed.
Original languageUndefined
Pages (from-to)1725-1734
JournalJournal of polymer science. Part B: Polymer physics
Volume24
Issue number8
DOIs
Publication statusPublished - 1986

Keywords

  • IR-70823

Cite this