Change search
ReferencesLink to record
Permanent link

Direct link
Mechanical and Environmental Durability of High Performance Bio-based Composites
Luleå University of Technology, Department of Engineering Sciences and Mathematics.
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

This study is an initial step within the on-going project on development of high performance bio-based composites with improved mechanical (fatigue) and environmental (elevated humidity and temperature) durability. In the presented thesis the performance of cellulosic fibers (flax and regenerated cellulose), bio-based resins (Tribest, EpoBioX, Palapreg, and Envirez) and their composites under exposure to elevated humidity has been studied. Composites reinforcement was in a form of fiber rovings and fabrics to manufacture uni-directional and cross-ply laminates. Water absorption experiments were performed at different humidity levels to measure apparent diffusion coefficient and moisture content at saturation. Effect of chemical treatment (alkali and silane) on fibers as protection against moisture was also subjected to study. The comparison of results for pristine resins and composites showed that primarily cellulosic reinforcement is responsible for moisture uptake in composites. However, fiber treatment did not improve moisture resistance in composites significantly. Mechanical testing was carried out in order to estimate the influence of humidity on behavior of these materials. Results were compared with data for glass fiber and epoxy, as reference materials. The results indicated that some of the bio-based resins and composites with these polymers performed very well and have comparable properties with composites of synthetic epoxy, even at elevated humidity.

Place, publisher, year, edition, pages
2014. , 78 p.
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-18040Local ID: 67f1d250-fe16-4cc9-9052-adab70dbf581ISBN: 978-91-7439-860-1ISBN: 978-91-7439-861-8 (PDF)OAI: oai:DiVA.org:ltu-18040DiVA: diva2:991046
Note
Godkänd; 2014; 20140204 (newdor); Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Newsha Doroudgarian Ämne: Polymera konstruktionsmaterial/Polymeric Composite Materials Uppsats: Mechanical and Environmental Durability of High Performance Bio-based Composites Examinator: Professor Roberts Joffe, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: PhD, Chief technology officer Egidija Rainosalo, Technology centre Ketek ltd. Kokkola, Finland Tid: Fredag den 7 mars 2014 kl 10.00 Plats: E632, Luleå tekniska universitetAvailable from: 2016-09-29 Created: 2016-09-29Bibliographically approved

Open Access in DiVA

fulltext(11631 kB)6 downloads
File information
File name FULLTEXT01.pdfFile size 11631 kBChecksum SHA-512
f90d56b1076eb11fc119b7672a8f268d6cdeedfc5abbd53e4a9ec03767c299be5a01c41adb18d04efec3a2ca4d43a20f264b7117c65f13e643a0e299da58759b
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Doroudgarian, Newsha
By organisation
Department of Engineering Sciences and Mathematics

Search outside of DiVA

GoogleGoogle Scholar
Total: 6 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 16 hits
ReferencesLink to record
Permanent link

Direct link