Liquefaction of alder wood as the source of renewable and sustainable polyols for preparation of polyurethane resins - Publication - Bridge of Knowledge

Your account

login

Search

Liquefaction of alder wood as the source of renewable and sustainable polyols for preparation of polyurethane resins

Abstract

Liquefaction of wood-based biomass gives different polyol properties depending on the reagents used. In this article, alder wood sawdust was liquefied with glycerol and poly(ethylene glycol) solvents. Liquefaction reactions were carried out at temperatures of 120, 150 and 170 °C. The obtained bio-polyols were analyzed in order to establish the process efficiency, hydroxyl number, acid value, viscosity and structural characteristics using Fourier transform infrared (FTIR), carbon (13C) and proton (1H) NMR analyses. The results indicate that the optimal conditions for the liquefaction process are at 150 °C for 6 h. The results of the FTIR spectra analysis and the hydroxyl number in the range of 214–687 mg KOH/g showed that the obtained bio-polyols are a potential substitute for petrochemical polyols commonly used for the synthesis of polyurethane polymers. Polyurethane resins containing 90 wt% of bio-polyol were obtained by a one-step method using a hydraulic press. The material was pressed for 15 min (5 MPa) at 100 °C with an NCO/OH ratio in the range of 0.9–1.2. Dynamic mechanical thermal analysis (DMA) showed high cross-linking density and modulus of elasticity in a wide range of 62–1362 MPa.

Citations

  • 3 0

    CrossRef

  • 0

    Web of Science

  • 3 1

    Scopus

Authors (4)

Cite as

Full text

full text is not available in portal

Keywords

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
WOOD SCIENCE AND TECHNOLOGY no. 54, pages 103 - 121,
ISSN: 0043-7719
Language:
English
Publication year:
2020
Bibliographic description:
Gosz K., Kowalkowska-Zedler D., Haponiuk J., Piszczyk Ł.: Liquefaction of alder wood as the source of renewable and sustainable polyols for preparation of polyurethane resins// WOOD SCIENCE AND TECHNOLOGY -Vol. 54,iss. 1 (2020), s.103-121
DOI:
Digital Object Identifier (open in new tab) 10.1007/s00226-019-01152-6
Verified by:
Gdańsk University of Technology

seen 219 times

Recommended for you

Bio-Based Polyurethane Networks Derived from Liquefied Sawdust

2021

Biopolyols obtained via microwave-assisted liquefaction of lignin: structure, rheological, physical and thermal properties

2018

Biopolyols obtained via crude glycerol-based liquefaction of cellulose: their structural, rheological and thermal characterization

2016

Liquefaction of macroalgae Enteromorpha biomass for the preparation of biopolyols by using crude glycerol

2017
Meta Tags