title: Effects of asperities and organic-inorganic interactions on the strength of nacre-mimetic composites.
abstract: Nacre is a natural organic-inorganic hybrid composite, whose hierarchical structure has a complex influence on its high strength. Many structural features have been discovered, which influence the mechanical properties of nacre, and the authors have a particular interest in the role of the asperities and organic-inorganic interactions. In this study, a composite was prepared which mimics the asperity structure using clay minerals. Organic-inorganic bonding was induced with silane treatment. Both factors increased the yield strength of the composites; however, different deformation behavior was exhibited. It was found that asperities improved the strength of the composite, and that composition influences the stiffness of the composite. The organic-inorganic interaction between the resin and the other components of the composite reduced the deformation of the composite and consequently improved strength.
authors.affiliation: Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju 52851, Republic of Korea.
authors.forename: Yoonjoo
authors.initials: Y
authors.lastname: Lee
authors.affiliation: Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju 52851, Republic of Korea.
authors.forename: Bo-Yeon
authors.initials: BY
authors.lastname: Kim
authors.affiliation: Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju 52851, Republic of Korea.
authors.forename: Dong-Geun
authors.initials: DG
authors.lastname: Shin
authors.affiliation: Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju 52851, Republic of Korea.
authors.forename: Soo-Ryong
authors.initials: SR
authors.lastname: Kim
authors.affiliation: Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju 52851, Republic of Korea.
authors.forename: Woo-Teck
authors.initials: WT
authors.lastname: Kwon
authors.affiliation: Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju 52851, Republic of Korea. Electronic address: yhkokim@kicet.re.kr.
authors.forename: Younghee
authors.initials: Y
authors.lastname: Kim
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D060734:Nacre / Q000737:chemistry*
chemical_list: D060734:Nacre; D017438:Bisphenol A-Glycidyl Methacrylate; C033930:Silar (3M)
keywords: Alumina-PMMA composites; Asperities; Bio-inspired; Fracture toughness; Nacre-mimetic; Organic-inorganic interaction