Atomic-Force Microscopy Investigations on Fracture Surfaces of Inorganic, Fullerene-Like WS2 (IF-WS2)–epoxy Nanocomposites

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Atomic-Force Microscopy Investigations on Fracture Surfaces of Inorganic, Fullerene-Like WS2 (IF-WS2)–epoxy Nanocomposites. / Haba, Dietmar; Brunner, Andreas J.; Teichert, Christian.
in: Macromolecular Symposia, Jahrgang 373.2017, Nr. 1, 1600127, 22.06.2017.

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

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@article{1a80434b499540278ba6329f5ddb6f58,
title = "Atomic-Force Microscopy Investigations on Fracture Surfaces of Inorganic, Fullerene-Like WS2 (IF-WS2)–epoxy Nanocomposites",
abstract = "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.",
keywords = "atomic-force microscopy (AFM), crosslinking, fracture, nanocomposites, thermosets",
author = "Dietmar Haba and Brunner, {Andreas J.} and Christian Teichert",
year = "2017",
month = jun,
day = "22",
doi = "10.1002/masy.201600127",
language = "English",
volume = "373.2017",
journal = "Macromolecular Symposia",
issn = "1022-1360",
publisher = "Wiley-VCH ",
number = "1",

}

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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 -