title: Physical-mechanical properties of agar/κ-carrageenan blend film and derived clay nanocomposite film.
abstract: Binary blend films with different mixing ratio of agar and κ-carrageenan were prepared using a solution casting method with and without nanoclay and the effect of their composition on the mechanical, water vapor barrier, and water resistance properties was tested. The tensile strength (TS) of the κ-carrageenan film was greater than that of agar film. The water vapor permeability (WVP) of the agar film was lower than that of κ-carrageenan film, the swelling ratio (SR) and water solubility (WS) of κ-carrageenan film were higher than those of agar film. Each property of the binary blend films varied proportionately depending on the mixing ratio of each component. The XRD result indicated that the nanocomposite with agar/κ-carrageenan/clay (Cloisite(®) Na(+)) was intercalated. Consequently, the mechanical strength, water vapor barrier properties, and water contact angle (CA) were significantly (P < 0.05) improved through nanocomposite formation.
authors.affiliation: Dept. of Food Engineering, Mokpo Natl. Univ., 960 Muanro, Chungkyemyon, Muangun 534-729, Jeonnam, Republic of Korea. jwrhim@mokpo.ac.kr
authors.forename: Jong-Whan
authors.initials: JW
authors.lastname: Rhim
mesh_terms: D000362:Agar / Q000737:chemistry*; D000538:Aluminum Silicates / Q000737:chemistry*; D002351:Carrageenan / Q000737:chemistry*; D055598:Chemical Phenomena; D000077215:Clay; D018857:Food Packaging / Q000379:methods; D053761:Nanocomposites / Q000737:chemistry*; D010539:Permeability; D012995:Solubility; D013227:Steam; D013718:Tensile Strength; D014961:X-Ray Diffraction
chemical_list: D000538:Aluminum Silicates; D013227:Steam; D002351:Carrageenan; D000362:Agar; D000077215:Clay