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A method to quantify energy dissipation during crack propagation on the nanometer scale in polymers
Luleå tekniska universitet.
Luleå tekniska universitet.
1994 (English)In: Preprint papers / Polymat '94, 19 - 22 September 1994, Imperial College, London, UK: eight major international conferences within: diffusion in polymers-IV, polymers in extreme environments-II, modelling of polymers structure and properties, reactive polymer processing, polymer technologies for electronics, polymer properties for CAD/CAM-II, polymer blends-II, toughening of plastics-III / [ed] John Hodgkinson, London: Institute of Materials , 1994, p. 614-617Conference paper, Published paper (Refereed)
Abstract [en]

An ultramicrotome was used in order to measure the work to section, W sub s , during sectioning of polymers (PS, PC, PMMA, epoxy). W sub s was measured as a function of section thickness for five different amorphous polymers in the glassy state. W sub s was found to increase with increasing section thickness and varied from approx15-100 J/m exp 2 depending on the material and section thickness. It is believed that this technique is applicable for quantification of energy dissipation at a very local level in polymers. The reason is that the sections are very thin (as thin as 60 nm) and therefore only a very small volume of material is believed to be activated during the crack propagation. This is supported by the fact that W sub s approaches the smallest possible value, the intrinsic fracture energy, G sub 0 , for very small section thicknesses

Place, publisher, year, edition, pages
London: Institute of Materials , 1994. p. 614-617
National Category
Bio Materials
Research subject
Wood Physics
Identifiers
URN: urn:nbn:se:ltu:diva-27815Local ID: 15e143e0-93ae-11dd-a897-000ea68e967bOAI: oai:DiVA.org:ltu-27815DiVA, id: diva2:1001006
Conference
Polymat '94 : 19/09/1994 - 22/09/1994
Note
Godkänd; 1994; 20081006 (cira)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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