title: Wheat Gluten Blends with Maleic Anhydride-Functionalized Polyacrylate Cross-Linkers for Improved Properties.
abstract: A family of polyacrylate-based cross-linkers was synthesized to maximize the toughness of high Tg, high modulus wheat gluten blends in the glassy state. Mechanical testing and damping measurements were conducted to provide an example where the work of fracture and strength of the blend substantially exceeds polystyrene while maintaining flexure stiffness in excess of 3 GPa. The new rubbery cross-linkers, polymethyl acrylate-co-maleic anhydride and polyethyl acrylate-co-maleic anhydride, improve WG mechanical properties and reduce water absorption simultaneously. MDSC, FTIR, HPLC, and NMR data confirmed the cross-linking reaction with wheat gluten. Flexural, DMA, and water absorption testing were carried out to characterize the property improvements. DMA was conducted to investigate the relationship between energy damping and mechanical property improvement. If the cross-linker damping temperature is close to the testing temperature, the entire sample exhibits high damping, toughness, and strength.
authors.affiliation: Institute of Materials Science, University of Connecticut , 97 North Eagleville Road, Storrs, Connecticut 06269-3136, United States.
authors.forename: Cheng
authors.initials: C
authors.lastname: Diao
authors.affiliation: Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Xia
authors.affiliation: Institute of Materials Science, University of Connecticut , 97 North Eagleville Road, Storrs, Connecticut 06269-3136, United States.|Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269, United States.|Department of Chemical and Biomolecular Engineering, University of Connecticut , 191 Auditorium Road, Storrs, Connecticut 06269-3222, United States.
authors.forename: Richard S
authors.initials: RS
authors.lastname: Parnas
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D005983:Glutens / Q000737:chemistry* / Q000378:metabolism; D008299:Maleic Anhydrides / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014908:Triticum / Q000378:metabolism*; D014867:Water / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D008299:Maleic Anhydrides; D014867:Water; C006903:carbopol 940; D005983:Glutens
keywords: acrylate copolymer; cross-linking; damping; toughness; water absorption; wheat gluten