RT Journal Article
T1 Lignin‐based polyols with controlled microstructure by cationic ring opening polymerization
A1 Perez‐arce, Jonatan
A1 Centeno‐pedrazo, Ander
A1 Labidi, Jalel
A1 Ochoa‐gomez, Jose R.
A1 Garcia‐suarez, Eduardo J.
AB Lignin‐based polyols (LBPs) with controlled microstructure were obtained by cationic ring opening polymerization (CROP) of oxiranes in an organosolv lignin (OL) tetrahydrofuran (THF) solution. The control on the microstructure and consequently on the properties of the LBPs such as hydroxyl number, average molecular weight, melting, crystallization and decomposition temperatures, are crucial to determine the performance and application of the derived‐products. The influence of key parameters, for example, molar ratio between the oxirane and the hydroxyl groups content in OLO, initial OL concentration in THF, temperature, specific flow rate and oxirane nature has been investigated. LBPs with hydroxyl numbers from 35 to 217 mg KOH/g, apparent average Mw between 5517 and 52,900 g/mol and melting temperatures from −8.4 to 18.4 °C were obtained. The CROP procedure allows obtaining of tailor‐made LBPs for specific applications in a very simple way, opening the way to introduce LBPs as a solid alternative to substitute currently used fossil‐based polyols.
SN 2073-4360
YR 2021
FD 2021-02-22
LA eng
NO Perez‐arce , J , Centeno‐pedrazo , A , Labidi , J , Ochoa‐gomez , J R & Garcia‐suarez , E J 2021 , ' Lignin‐based polyols with controlled microstructure by cationic ring opening polymerization ' , Polymers , vol. 13 , no. 4 , 651 , pp. 1-12 . https://doi.org/10.3390/polym13040651 , https://doi.org/10.3390/polym13040651
NO Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
NO by the Basque Government (grant KK‐ Acknowledgments: The authors acknowledge the Netherlands Organisation for Applied Scientific Research; The Hague, The Netherlands (TNO) for kindly providing the OL; and the Basque Government is gratefully acknowledged for funding this research.
DS TECNALIA Publications
RD 4 jul 2024