RT Journal Article
T1 Emulsion Stabilization by Cationic Lignin Surfactants Derived from Bioethanol Production and Kraft Pulping Processes
A1 Yuliestyan, Avido
A1 Partal López, Pedro
A1 Navarro Domínguez, Francisco Javier
A1 Martín Sampedro, Raquel
A1 Ibarra, David
A1 Eugenio, María Eugenia
AB Oil-in-water bitumen emulsions stabilized by biobased surfactants such as lignin are inline with the current sustainable approaches of the asphalt industry involving bitumen emulsions forreduced temperature asphalt technologies. With this aim, three lignins, derived from the kraft pulpingand bioethanol industries, were chemically modified via the Mannich reaction to be used as cationicemulsifiers. A comprehensive chemical characterization was conducted on raw lignin-rich products,showing that the kraft sample presents a higher lignin concentration and lower molecular weight.Instead, bioethanol-derived samples, with characteristics of non-woody lignins, present a highconcentration of carbohydrate residues and ashes. Lignin amination was performed at pH = 10 and 13,using tetraethylene pentamine and formaldehyde as reagents at three different stoichiometric molarratios. The emulsification ability of such cationic surfactants was firstly studied on prototype siliconeoil-in-water emulsions, attending to their droplet size distribution and viscous behavior. Among thesynthetized surfactants, cationic kraft lignin has shown the best emulsification performance, beingused for the development of bitumen emulsions. In this regard, cationic kraft lignin has successfullystabilized oil-in-water emulsions containing 60% bitumen using small surfactant concentrations,between 0.25 and 0.75%, which was obtained at pH = 13 and reagent molar ratios between 1/7/7 and1/28/28 (lignin/tetraethylene pentamine/formaldehyde)
PB MDPI
SN 2073-4360 (electrónico)
YR 2022
FD 2022-07
LK http://hdl.handle.net/10272/21134
UL http://hdl.handle.net/10272/21134
LA eng
NO Yuliestyan, A., Partal, P., Navarro, F. J., Martín-Sampedro, R., Ibarra, D., & Eugenio, M. E. (2022). Emulsion Stabilization by Cationic Lignin Surfactants Derived from Bioethanol Production and Kraft Pulping Processes. In Polymers (Vol. 14, Issue 14, p. 2879). MDPI AG. https://doi.org/10.3390/polym14142879
NO This research is part of SUP&R ITN (FP7-PEOPLE-2013-ITN, Grant agreement 607524) andGreenAsphalt project (ref. 802C1800001) co-funded 80% by FEDER European Programme and 20%by Junta de Andalucía (Consejería de Economía, Conocimiento, Empresas y Unversidades/AgenciaIDEA). The authors also wish to thank Comunidad de Madrid and MCIU/AEI/FEDER, UE via grantnumber SUSTEC-CM S2018/EMT-4348 and RTI2018-096080-B-C22, respectively. The contribution ofCOST Action LignoCOST (CA17128), supported by COST (European Cooperation in Science andTechnology), in promoting the interaction, exchange of knowledge and collaborations in the field oflignin valorization is gratefully acknowledged
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026