Amphiphilic Spruce Galactoglucomannan Derivatives Based on Naturally-Occurring Fatty Acids
2013 (English)In: BioResources, ISSN 1930-2126, Vol. 8, no 3, 3771-3790 p.Article in journal (Refereed) Published
A class of nonionic polysaccharides-based surfactants were synthesised from O-acetyl galactoglucomannan (GGM), water-soluble hemicelluloses from spruce, using naturally-occurring saturated fatty acids, CH3(CH2)(n)COOH (n = 7, 12, and 16). Hemicelluloses can be recovered from waste-streams of papermaking and agricultural processes or isolated by hot water extraction of plant tissues integrated into a biorefinery process. Fatty acids can be recovered as byproducts of the agricultural and food industries. Different synthesis routes were applied to yield amphiphilic derivatives with either a grafted or block structure. Fatty acids activated with 1,1'-carbonyldiimidazole (CDI) were grafted to the backbone of GGM molecules on their hydroxyl groups. Alternatively, synthesised amino-activated fatty acids using ethylenediamine were reacted with the reducing end of GGM. By adjusting the reagent ratios, GGM-based surfactants with different hydrophilic to hydrophobic ratios were prepared. Their surface activity was assessed by measuring the surface tension in water. This study presents an approach to design carbohydrate-based surfactants using naturally-occurring fatty acids that may find potential applications in such areas as food, cosmetic, and paint formulations.
Place, publisher, year, edition, pages
2013. Vol. 8, no 3, 3771-3790 p.
Amphiphilic, Fatty acid, Hemicelluloses, Galactoglucomannan, Reductive amination, Surfactant, Surface tension
Paper, Pulp and Fiber Technology
IdentifiersURN: urn:nbn:se:kth:diva-129643ISI: 000323370400049ScopusID: 2-s2.0-84878644364OAI: oai:DiVA.org:kth-129643DiVA: diva2:653135
QC 201310032013-10-032013-10-032013-10-03Bibliographically approved