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Mechanical performance of NCC-foam
RISE, Swerea, SICOMP.
RISE, Swerea, SICOMP.
2015 (English)In: ICCM International Conferences on Composite Materials, International Committee on Composite Materials , 2015Conference paper, Published paper (Refereed)
Abstract [en]

Today's society is a society in constant motion with a strong focus on rapid development. The desire for rapid development and continuous growth causes Earth's resources to be consumed in an increasingly fast pace. Constituents in conventional fibre-reinforced composite sandwich structures which are widely used in marine applications, sports, aerospace and construction, such as carbon fibre, polyester, vinyl ester, epoxy resins, PVC- and PET foam are usually oil-based. It is therefore of great importance for our society that we are trying to replace these petroleum-based products with bio-based equivalents derived from renewable CO2-neutral plants. Cellulose, the primary structural component of plants, is the most ubiquitous and abundant organic compound on the planet. When cellulose fibrils are processed under carefully controlled conditions, it is possible to release highly crystalline nano-particles known as “nano crystalline cellulose (NCC)”. NCC has some very interesting mechanical properties: a single NCC fibre typically has a Young's modulus of around 150 GPa and a strength of 10 GPa. MELODEA and the Hebrew University of Jerusalem recently developed a unique technique for self-assembling NCC into highly ordered layered cellular structures, i.e. foams, for use as lightweight core materials for biocomposite sandwich constructions. Characterisation of foams in respect of their mechanical performance compared to fossil based equivalent has been conducted. Results for the study show that the NCC-foams' mechanical properties are sufficient for composite sandwich structures. By comparing with fossil oil-based PET equivalent it is seen that when the mechanical properties are in the same region, the density of the NCC-foams is slightly higher. The intense research and development on the NCC-foam indicates that in the future it will match the oil-based PET foam on all properties. Overall conclusion of the work is that the environmental friendly NCC-foam has potential as core material for composite sandwich structures. 

Place, publisher, year, edition, pages
International Committee on Composite Materials , 2015.
Keywords [en]
Foam, Mechanical Properties, Nano crystalline cellulose
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-42196Scopus ID: 2-s2.0-85053107340OAI: oai:DiVA.org:ri-42196DiVA, id: diva2:1384143
Conference
20th International Conference on Composite Materials, ICCM 2015, 19 July 2015 through 24 July 2015
Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-01-09Bibliographically approved

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