Applications of enzymatic saccharification residues as a fully biobased adhesive

I. Hafez, H. Yang, W. T.Y. Tze

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Saccharification of woody biomass often leaves behind solid residues that are rich in lignin. Lignin is a natural phenolic binder for cell walls in woody plants, and therefore the objective of this study was to produce environmentally benign adhesive from such residues. The residues were ground to nano-scale fragments, and then applied to wood with hexamethylenetetramine (HMTA) as a crosslinker. Lap shear results show that the bond strength of nanofiber-containing adhesive was higher if nanofiber was fibrillated from samples pre-saccharified to a higher level (80%) or using a smaller grinding clearance (smaller nanofiber). Addition of HMTA further improved the bond strength to 80% of the value of commercial phenolformaldehyde adhesive. Infra-red spectroscopy verified corsslinking in nanofiber treated with HMTA. Differential scanning calorimetry revealed 73% degree of curing. Overall results show that a fully biobased adhesive can be prepared from wood saccharification residues without purifying for lignin.

Original languageEnglish (US)
Title of host publicationTechnical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
PublisherNano Science and Technology Institute
Pages218-221
Number of pages4
ISBN (Print)9781482258301
StatePublished - Jan 1 2014
EventNanotechnology 2014: Electronics, Manufacturing, Environment, Energy and Water - 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014 - Washington, DC, United States
Duration: Jun 15 2014Jun 18 2014

Publication series

NameTechnical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
Volume3

Other

OtherNanotechnology 2014: Electronics, Manufacturing, Environment, Energy and Water - 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
CountryUnited States
CityWashington, DC
Period6/15/146/18/14

Keywords

  • Adhesion
  • Green adhesives
  • Lignin
  • Nanofiber
  • Saccharification residues

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