title: A small-angle neutron scattering study of cholic acid-based organogel systems.
abstract: Small-angle neutron scattering measurements were performed on some cholic acid-based gel systems in order to gain detailed information about the network structure. The presence of thin fibers with a radius of about 10-20 A was found for various gelators. Two types of interaction between different sorts of fibers were demonstrated, depending on the molecular structure of the gelator. The first type involves the presence of microcrystalline knots with a dimension of about 100-200 A between the fibers. Upon heating, this network gradually disintegrates. The second type involves loose entanglements between flattened fibers. The occurrence of these types of interaction is related to the length of the alkyl tail attached to cholic acid.
authors.affiliation: Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB, The Netherlands.
authors.forename: Hendra M
authors.initials: HM
authors.lastname: Willemen
authors.forename: Antonius T M
authors.initials: AT
authors.lastname: Marcelis
authors.forename: Ernst J R
authors.initials: EJ
authors.lastname: Sudhölter
authors.forename: Wim G
authors.initials: WG
authors.lastname: Bouwman
authors.forename: Bruno
authors.initials: B
authors.lastname: Demé
authors.forename: Pierre
authors.initials: P
authors.lastname: Terech
mesh_terms: D002793:Cholic Acids / Q000737:chemistry*; D003460:Crystallization; D005782:Gels; D046911:Macromolecular Substances; D015394:Molecular Structure; D033363:Neutron Diffraction
chemical_list: D002793:Cholic Acids; D005782:Gels; D046911:Macromolecular Substances