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The extraction of polyol for the synthesis of lignin-based polyurethane coatings – a review
Department of Wood Science and Technology, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran.ORCID iD: 0000-0001-5159-402X
Department of Wood Science and Technology, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran.ORCID iD: 0000-0003-4434-0018
Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran.ORCID iD: 0000-0003-3094-1322
LERMAB, University of Lorraine, Nancy, France.ORCID iD: 0000-0002-9749-7185
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2024 (English)In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 19, no 3, p. 794-802Article, review/survey (Refereed) Published
Abstract [en]

Lignin, with its availability, aromatic structure, and abundant hydroxyl groups, presents a promising source of green bio-based polyols. The environmental implications of oil-derived polymeric materials have sparked interest in renewable biopolymers and composites from natural sources, including polyurethane composites. This review investigates optimal methods for lignin extraction for use in lignin-based polyurethane coatings, scrutinizes alternatives to oil-based polyols, compares existing chemical modification methods of lignin for use in polyurethane coatings and resins, and discusses the control of synthesis and final properties of lignin-based polyurethane, emphasizing the crucial role of the stoichiometric ratio of NCO groups in the isocyanate to the total OH groups in a lignin-based polyol. While numerous studies have focused on polyurethanes with and without isocyanate, this review describes the synthesis of lignin into bio-polyols and its potential as a substitute for petroleum-based polyols, highlighting organosolv and Kraft lignin as optimal choices for replacing oil-based polyols in polyurethanes due to their high purity.

Place, publisher, year, edition, pages
Taylor & Francis, 2024. Vol. 19, no 3, p. 794-802
Keywords [en]
Non-isocyanate polyurethane, coatings, wood
National Category
Organic Chemistry Polymer Technologies
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-105208DOI: 10.1080/17480272.2024.2335502ISI: 001203828800001Scopus ID: 2-s2.0-85190420856OAI: oai:DiVA.org:ltu-105208DiVA, id: diva2:1855314
Note

Validerad;2024;Nivå 2;2024-07-01 (hanlid);

Funder: Tarbiat Modares University of Tehran, Iran

Available from: 2024-04-30 Created: 2024-04-30 Last updated: 2024-07-01Bibliographically approved

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