Atomic-Force Microscopy Investigations on Fracture Surfaces of Inorganic, Fullerene-Like WS2 (IF-WS2)–epoxy Nanocomposites
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in: Macromolecular Symposia, Jahrgang 373.2017, Nr. 1, 1600127, 22.06.2017.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Atomic-Force Microscopy Investigations on Fracture Surfaces of Inorganic, Fullerene-Like WS2 (IF-WS2)–epoxy Nanocomposites
AU - Haba, Dietmar
AU - Brunner, Andreas J.
AU - Teichert, Christian
PY - 2017/6/22
Y1 - 2017/6/22
N2 - Fracture surfaces of stoichiometric and sub-stoichiometric epoxy, both neat and filled with 0.5 % of inorganic, fullerene-like WS2 nanoparticles (NPs) by mass are investigated with atomic-force microscopy (AFM). Sub-stoichiometric epoxy is very brittle, but other than stoichiometric epoxy, it increases significantly in its fracture toughness with NP addition. For sub-stoichiometric epoxy, AFM investigation revealed a very regular fracture pattern with periodic features normal to the crack propagation direction. Stoichiometric epoxy exhibited ripples several micrometers in size, but nevertheless had a lower fracture surface area. After NP addition, the fracture surfaces were significantly rougher, but the mentioned ripples disappeared. The fracture surface roughness correlated neither to the measured fracture toughness nor to its increase with the nanocomposite's composition.
AB - Fracture surfaces of stoichiometric and sub-stoichiometric epoxy, both neat and filled with 0.5 % of inorganic, fullerene-like WS2 nanoparticles (NPs) by mass are investigated with atomic-force microscopy (AFM). Sub-stoichiometric epoxy is very brittle, but other than stoichiometric epoxy, it increases significantly in its fracture toughness with NP addition. For sub-stoichiometric epoxy, AFM investigation revealed a very regular fracture pattern with periodic features normal to the crack propagation direction. Stoichiometric epoxy exhibited ripples several micrometers in size, but nevertheless had a lower fracture surface area. After NP addition, the fracture surfaces were significantly rougher, but the mentioned ripples disappeared. The fracture surface roughness correlated neither to the measured fracture toughness nor to its increase with the nanocomposite's composition.
KW - atomic-force microscopy (AFM)
KW - crosslinking
KW - fracture
KW - nanocomposites
KW - thermosets
UR - http://www.scopus.com/inward/record.url?scp=85021120341&partnerID=8YFLogxK
U2 - 10.1002/masy.201600127
DO - 10.1002/masy.201600127
M3 - Article
AN - SCOPUS:85021120341
VL - 373.2017
JO - Macromolecular Symposia
JF - Macromolecular Symposia
SN - 1022-1360
IS - 1
M1 - 1600127
ER -