| Téléchargement | - Voir le manuscrit accepté : Preparation of lignopolyols from wheat straw soda lignin (PDF, 2.8 Mio)
|
|---|
| DOI | Trouver le DOI : https://doi.org/10.1021/jf202452m |
|---|
| Auteur | Rechercher : Ahvazi, Behzad1; Rechercher : Wojciechowicz, Olivia1; Rechercher : Ton-That, Tan-Minh2; Rechercher : Hawari, Jalal1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Institut de recherche en biotechnologie du CNRC
- Conseil national de recherches du Canada. Institut des matériaux industriels du CNRC
|
|---|
| Format | Texte, Article |
|---|
| Sujet | wheat straw; soda lignin; oxyalkylation; propylene oxide; lignopolyl; characterization; 31P NMR spectroscopy; FTIR |
|---|
| Résumé | Wheat straw soda lignin was modified and characterized by several qualitative and quantitative methods such as <sup>31</sup>P NMR spectroscopy, to evaluate its potential as a substitute for polyols in view of polyurethane applications. Chemical modification of the lignin was achieved with propylene oxide to form ligno-polyol derivatives. This was performed by a two-step reaction of lignin with maleic anhydride followed by propylene oxide and by direct oxyalkylation under acidic and alkaline conditions. The physical and chemical properties of ligno-polyols from each method and the subsequent chain-extended hydroxyl groups were evaluated. Direct oxyalkylation of lignin under alkaline conditions was found to be more efficient than acidic conditions and more effective than the two-step process for preparing ligno-polyol with higher aliphatic hydroxyl contents. |
|---|
| Date de publication | 2011-08-19 |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro du CNRC | NRCC 53382 |
|---|
| Numéro NPARC | 18806226 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | c37fddd0-1ffe-4d62-a2b5-403f476507f4 |
|---|
| Enregistrement créé | 2012-03-06 |
|---|
| Enregistrement modifié | 2020-04-21 |
|---|
