Jump to main content
Jump to site search

Issue 1, 2015
Previous Article Next Article

Low-temperature microwave-assisted pyrolysis of waste office paper and the application of bio-oil as an Al adhesive

Author affiliations

Abstract

The conversion of waste office paper (printed or photocopied) to bio-oil via low temperature (<200 °C) microwave-assisted pyrolysis, and its utilisation as an adhesive for aluminium–aluminium bonding are reported. The yields for the organic and aqueous phase bio-oil are 19% and 23%, respectively. The pyrolysis products were characterized by ICP-MS, ATR-IR, GC-MS and NMR to reveal broad categories of compounds indicative of sugars (carbohydrates), aromatics and carbonyl-containing moieties. Application of the organic phase bio-oil (70 mg) to Al plates (50 mm × 50 mm) followed by curing at different temperatures and time periods revealed that a maximum tensile strength of approximately 2300 N could be attained at 160 °C for 8 h cure. Also, at a fixed temperature, the tensile strength increased with increasing curing time. To gain an in-depth understanding of the adhesive properties of bio-oil, a liquid–liquid fractionation of the organic phase bio-oil was conducted. The ‘acidic’ fraction showed far better adhesion properties than the ‘neutral’ fraction with no bonding achieved for the aqueous fraction. A combination of the ‘acidic’ and ‘neutral’ fraction gave better adhesion, thus suggesting a possible synergistic or co-operative effect.

Graphical abstract: Low-temperature microwave-assisted pyrolysis of waste office paper and the application of bio-oil as an Al adhesive

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Apr 2014, accepted on 15 Aug 2014 and first published on 15 Aug 2014


Article type: Paper
DOI: 10.1039/C4GC00768A
Author version
available:
Download author version (PDF)
Green Chem., 2015,17, 260-270

  •   Request permissions

    Low-temperature microwave-assisted pyrolysis of waste office paper and the application of bio-oil as an Al adhesive

    Z. Zhang, D. J. Macquarrie, M. De bruyn, V. L. Budarin, A. J. Hunt, M. J. Gronnow, J. Fan, P. S. Shuttleworth, J. H. Clark and A. S. Matharu, Green Chem., 2015, 17, 260
    DOI: 10.1039/C4GC00768A

Search articles by author

Spotlight

Advertisements