title: Reducing water sensitivity of alginate bio-nanocomposite film using cellulose nanoparticles.
abstract: A bio-based nanocomposite was developed by incorporation of cellulose nanoparticles (CN) obtained from sulfuric acid hydrolysis into alginate biopolymer using solution casting method. The effect of CN loading content (1, 3, 5 and 10 wt%) on microstructural, physical, mechanical and optical properties of the nanocomposites were characterized. The results showed that water solubility and water vapor permeability of the nanocomposites decreased by about 40% and 17%, respectively, upon increasing the CN content to 10%. In addition, the crystalline structure of the CN increased surface hydrophobicity of the alginate film by about 98%. The tensile strength value of the composite films increased from 18.03 to 22.4 MPa with increasing NC content from 0 to 5%; but, it decreased with further increase of the filler content. Nevertheless, film transparency decreased with CN incorporation, especially in high level (10%), which suggested the occurrence of partial agglomeration of the fillers at 10% that coincided with microstructural and mechanical results.
authors.affiliation: Department of Fisheries, Faculty of Marine Sciences, Tarbiat Modares University, PO Box 46414-356, Noor, Iran.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Abdollahi
authors.forename: Mehdi
authors.initials: M
authors.lastname: Alboofetileh
authors.forename: Rabi
authors.initials: R
authors.lastname: Behrooz
authors.forename: Masoud
authors.initials: M
authors.lastname: Rezaei
authors.forename: Reza
authors.initials: R
authors.lastname: Miraki
mesh_terms: D000464:Alginates / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D055119:Elastic Modulus; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D006813:Humidity; D057927:Hydrophobic and Hydrophilic Interactions; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D055620:Optical Phenomena; D010539:Permeability; D012995:Solubility; D013227:Steam; D013499:Surface Properties; D013718:Tensile Strength; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D000464:Alginates; D006603:Hexuronic Acids; D013227:Steam; D014867:Water; D020723:Glucuronic Acid; D002482:Cellulose