The Effect of Cellulose Nanocrystal Coatings on the Glass Fiber–Epoxy Interphase
Autor: | Robert J. Moon, Joyanta Goswami, Ejaz Haque, Douglas M. Fox, Jeffrey W. Gilman, Kyriaki Kalaitzidou, Gale A. Holmes |
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Rok vydání: | 2019 |
Předmět: |
Materials science
Glass fiber 02 engineering and technology engineering.material 010402 general chemistry lcsh:Technology 01 natural sciences Article Nanomaterials chemistry.chemical_compound Coating General Materials Science shear strength Cellulose Composite material lcsh:Microscopy cellulose nanocrystal lcsh:QC120-168.85 Aqueous solution lcsh:QH201-278.5 lcsh:T coating Epoxy interphase 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Nanocrystal lcsh:TA1-2040 fracture visual_art Emulsion engineering visual_art.visual_art_medium lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 glass fiber |
Zdroj: | Materials Volume 12 Issue 12 Materials, Vol 12, Iss 12, p 1951 (2019) |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma12121951 |
Popis: | This study focuses on understanding the effect of cellulose nanocrystals (CNCs) on glass fiber/epoxy interfacial interactions. The glass fibers (GF) were coated with solutions containing cellulose nanomaterial. The parameters that were investigated were the CNC surface chemistry, concentration, and dispersing medium, i.e., aqueous solution only versus emulsions. To determine the effect of the CNC coatings on the interfacial adhesion, specimens of a single GF in an epoxy matrix were prepared for GF coating by varying the coating formulations. The interfacial shear stress (IFSS) was determined by the single fiber fragmentation test (SFFT). Following the SFFT, the samples were investigated by cross-polarized microscopy in order to understand the fracture modes which are related to the nature of the interphase. According to the SFFT data and photoelastic fracture patterns, both the emulsion and aqueous coatings containing cellulose nanocrystals functionalized with methyl(triphenyl) phosphonium (CNCPh) improve the IFSS in comparison to coated GFs without CNCs. |
Databáze: | OpenAIRE |
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