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

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Agustin, Melissa B.
dc.contributor.author Penttilä, Paavo A.
dc.contributor.author Lahtinen, Maarit
dc.contributor.author Mikkonen, Kirsi S.
dc.date.accessioned 2020-01-02T13:57:29Z
dc.date.available 2020-01-02T13:57:29Z
dc.date.issued 2019
dc.identifier.citation Agustin , M B , Penttilä , P A , Lahtinen , M & Mikkonen , K S 2019 , ' Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication ' , ACS Sustainable Chemistry and Engineering , vol. 7 , no. 24 , pp. 19925 − 19934 . https://doi.org/10.1021/acssuschemeng.9b05445 en
dc.identifier.issn 2168-0485
dc.identifier.other PURE UUID: 46f71b3b-d11c-4bf6-a84a-1bea8991c993
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/46f71b3b-d11c-4bf6-a84a-1bea8991c993
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85075937395&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/39550595/CHEM_Agustin_et_al_Rapid_and_Direct_Preparation_of_Lignin_2019_ACSSustChem.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/42006
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 19925 − 19934
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries ACS Sustainable Chemistry and Engineering en
dc.relation.ispartofseries issue 7 en
dc.rights openAccess en
dc.title Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department University of Helsinki
dc.contributor.department Department of Bioproducts and Biosystems
dc.subject.keyword acid precipitation
dc.subject.keyword alkaline pulping liquor
dc.subject.keyword BLN lignin
dc.subject.keyword emulsion
dc.subject.keyword lignin nanoparticle
dc.subject.keyword ultrasonication
dc.identifier.urn URN:NBN:fi:aalto-202001021117
dc.identifier.doi 10.1021/acssuschemeng.9b05445
dc.date.embargo info:eu-repo/date/embargoEnd/2020-11-14

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