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Hybrid Filaments from Saccaharina lattisima Biomass: Engineering of Alginate Properties with Maleic Anhydride Grafted Linseed Oil
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymer Technology.ORCID iD: 0000-0003-2109-9591
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Polymer Technology.ORCID iD: 0000-0002-1631-1781
2021 (English)In: Polymers, E-ISSN 2073-4360, Vol. 13, no 5, article id 836Article in journal (Refereed) Published
Abstract [en]

Linseed oil was graft modified with maleic anhydride and introduced into alginate by co-extrusion, producing alginate hybrid filaments. A straightforward grafting of maleic anhydride onto the oil backbone produced the modified oil. Additional esterification with n-dodecanol was also investigated. The structures of the modified oils were verified with 2D-NMR. The modified oil was mixed with alginate and extruded into CaCl2, forming thin filaments with diameters in the 130-260 mu m range. The impact of oil integration into the alginate filaments was assessed, with special emphasis on stress-at-break, and compared to values predicted by an empirical model relating the "stress to alginate concentration" ratio to prevailing conditions during filament drawing. Analogous alginate filaments were prepared with hydrochloric-, oxalic- and phytic acid calcium salts for comparison with alginate-oil hybrids to reveal the induced impact, with respect to the composition and charge, on the tensile performance.

Place, publisher, year, edition, pages
MDPI , 2021. Vol. 13, no 5, article id 836
Keywords [en]
filament, fiber, alginate, linseed oil, maleic anhydride, macroalgae, Saccharina
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-292596DOI: 10.3390/polym13050836ISI: 000628430000001PubMedID: 33803316Scopus ID: 2-s2.0-85102867990OAI: oai:DiVA.org:kth-292596DiVA, id: diva2:1543567
Note

QC 20210412

Available from: 2021-04-12 Created: 2021-04-12 Last updated: 2024-01-17Bibliographically approved

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Sterner, MartinEdlund, Ulrica

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