NFC-Spore Biocomposites: A study of flame retardancy, density, mechanical properties and production of films
Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Sporopollenin is considered a resistant material and might be applicable in flame retardant material. The use of renewable material in fields mainly dominated by toxic materials, such as bromides in flame retardant materials, could greatly improve the sustainability in those fields. A renewable porous film could be of interest in applications were cellophane is used today. The aim of this report is to investigate some basic properties of films made from nanofibrillated cellulose (NFC) and Lycopodium spores with a specific focus on flame retardant and mechanical properties. These properties were investigated using machines such as SEM, a universal electromechanical tester, TGA and vertical flame testing. During the production of the films an ultra turrax, rotavapor and rapid köthen was used. The films containing spores did not improved properties such as flame retardancy and mechanical properties when compared to the original NFC film. Density was lowered by almost half in some cases compared to the original NFC-film. Mechanical properties of the alkali-treated spores showed a significant increase compared to the untreated spores. An increased spore-ratio shows a decreased Young’s modulus. Further research on flame retardancy could be done using xyloglucan or another more flame retardant organic compound as a matrix. A foaming agent inside the sporopollenin could also contribute to flame retardancy. The mechanical properties could be compared to cellophane in order to see any future possibility of application. If possible pure sporopollenin should be used instead of whole spores.
Place, publisher, year, edition, pages
2014. , 51 p.
Lycopodium, Nanofibrillated cellulose, Mechanical properties, Flame retardancy, Film production
Composite Science and Engineering
IdentifiersURN: urn:nbn:se:kth:diva-147628OAI: oai:DiVA.org:kth-147628DiVA: diva2:731502
Master of Science in Engineering - Materials Design and Engineering
2014-05-12, Jernkontoret, Stora salen, Kungsträdgårdsgatan 10, Stockholm, 14:00 (English)
Berglund, Lars, ProfessorRojas, Ramiro, Doctor
Wistrand, Anna, Associate Professor
ProjectsDegree Project in Polymeric Materials, First Cycle