Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication

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dc.contributor.author Agustin, Melissa
dc.contributor.author Penttilä, Paavo
dc.contributor.author Lahtinen, Maarit
dc.contributor.author Mikkonen, Kirsi S.
dc.date.accessioned 2020-11-12T22:51:41Z
dc.date.available 2021-12-18T03:45:57Z
dc.date.issued 2019-12-16
dc.identifier.citation Agustin , M , Penttilä , P , Lahtinen , M & Mikkonen , K S 2019 , ' Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication ' , ACS Sustainable Chemistry & Engineering , vol. 7 , no. 24 , pp. 19925-19934 . https://doi.org/10.1021/acssuschemeng.9b05445
dc.identifier.other PURE: 128538384
dc.identifier.other PURE UUID: b6fe1d35-2393-4e82-a080-df856d7fcaca
dc.identifier.other WOS: 000503330400063
dc.identifier.other ORCID: /0000-0002-6839-8153/work/67133233
dc.identifier.other ORCID: /0000-0001-9189-0851/work/67135521
dc.identifier.other ORCID: /0000-0003-4490-5912/work/67135669
dc.identifier.uri http://hdl.handle.net/10138/321466
dc.description.abstract The production of lignin nanoparticles (LNPs) has opened new routes to the utilization of lignin in advanced applications. The existing challenge, however, is to develop a production method that can easily be adapted on an industrial scale. In this study, we demonstrated a green and rapid method of preparing LNPs directly from a sulfur-free alkaline pulping liquor by combining acid precipitation and ultrasonication. The combined method produced spherical LNPs, with a hierarchical nanostructure and a highly negative surface charge, within only 5 min of sonication. The mild, rapid sonication was achieved by sonicating directly without prior drying of the acid-precipitated and dialyzed lignin. Optimization of the method revealed the potential for minimizing acid consumption, shortening the dialysis time, and processing directly the alkaline liquor with as much as 20 wt % lignin. The isolated LNPs were stable during storage for 180 days, at a pH range of 4–7, and in a dispersing medium below 0.1 M NaCl. The LNPs also displayed excellent emulsifying properties, stabilizing oil-in-water emulsions. Thus, this simple and energy-efficient method opens a sustainable, straightforward, and scalable route to the production of organic solvent-free LNPs, with high potential as interface stabilizers of multiphase systems in the food and medical industries. en
dc.format.extent 19
dc.language.iso eng
dc.relation.ispartof ACS Sustainable Chemistry & Engineering
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject BLN lignin
dc.subject COMPLEX
dc.subject KRAFT LIGNIN
dc.subject NANOSPHERES
dc.subject ULTRASOUND
dc.subject VALORIZATION
dc.subject acid precipitation
dc.subject alkaline pulping liquor
dc.subject emulsion
dc.subject lignin nanoparticle
dc.subject ultrasonication
dc.subject 416 Food Science
dc.title Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication en
dc.type Article
dc.contributor.organization Department of Food and Nutrition
dc.contributor.organization Food Materials Science Research Group
dc.contributor.organization Helsinki Institute of Sustainability Science (HELSUS)
dc.contributor.organization Food Sciences
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1021/acssuschemeng.9b05445
dc.relation.issn 2168-0485
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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