title: Water extractable arabinoxylan aerogels prepared by supercritical CO2 drying.
abstract: Water extractable arabinoxylan (WEAX) aerogels were prepared by extracting the solvent from the alcogels (WEAX hydrogels with an alcohol as the solvent) with carbon dioxide under supercritical conditions. WEAX aerogels were characterized using scanning electron microscopy and adsorption and desorption nitrogen isotherms. The micrographs indicate a heterogeneous porous network structure in WEAX aerogel. Adsorption/desorption nitrogen isotherms of this material were type IV, which confirm that this material possess a mesoporous structure. WEAX aerogels rehydration capability was evaluated and the water absorption mechanism was determined. The WEAX aerogels water absorption mechanism was non-Fickian (n = 0.54).
authors.affiliation: Laboratorio de Biopolímeros, CTAOA, Centro de Investigación en Alimentación y Desarrollo, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora 83000, Mexico. jmarquez@estudiantes.ciad.mx
authors.forename: Jorge
authors.initials: J
authors.lastname: Marquez-Escalante
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Carvajal-Millan
authors.forename: Mario
authors.initials: M
authors.lastname: Miki-Yoshida
authors.forename: Lorena
authors.initials: L
authors.lastname: Alvarez-Contreras
authors.forename: Alma Rosa
authors.initials: AR
authors.lastname: Toledo-Guillén
authors.forename: Jaime
authors.initials: J
authors.lastname: Lizardi-Mendoza
authors.forename: Agustín
authors.initials: A
authors.lastname: Rascón-Chu
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D005782:Gels / Q000737:chemistry; D016062:Porosity; D014867:Water / Q000737:chemistry*; D014990:Xylans / Q000737:chemistry*
chemical_list: D005782:Gels; D014990:Xylans; D014867:Water; D002245:Carbon Dioxide; C085118:arabinoxylan