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Journal of Wood Science

, Volume 64, Issue 5, pp 683–689 | Cite as

Preparation of flocculant for optimizing glycol lignin manufacturing process by cationization of glycol lignin

  • Yasuyuki Matsushita
  • Hiroki Endo
  • Shiho Takahashi
  • Dan Aoki
  • Kazuhiko Fukushima
  • Tatsuhiko Yamada
Original Article
  • 73 Downloads

Abstract

Glycol lignin possessing thermoplastic and fusible properties can be a biorefinery platform material; however, glycol lignin is obtained as very small particles in suspension and the low dewatering efficiency is a major difficulty for the mass production. To improve the productivity of glycol lignin in the refinery plant, glycol lignin-based flocculants were prepared and their flocculation performance was examined. The flocculants (cationized glycol lignins) were synthesized by a reaction with glycidyltrimethylammonium chloride (GTA) in various reaction conditions. The prepared flocculants exhibited high flocculation performance and successfully economized the production cost of glycol lignin. Their flocculation efficiency was affected by the precipitation temperature, the length of the glycol chain, the molecular weight and the functional group of the glycol lignin. The flocculation behavior was interpreted by phase separation theory at a lower critical solution temperature (LCST).

Keywords

Lignin Polyethylene glycol (PEG) Acid-catalyzed solvolysis Flocculant Glycidyltrimethylammonium chloride (GTA) 

Notes

Acknowledgements

This work was supported by Cabinet Office, Government of Japan, Cross-ministerial Strategic Innovation Promotion Program (SIP), “Technologies for creating next-generation agriculture, forestry and fisheries”, SIP-Lignin Project (funding agency: Bio-oriented Technology Research Advancement Institution, NARO).

Supplementary material

10086_2018_1749_MOESM1_ESM.docx (692 kb)
Supplementary material 1 (DOCX 691 KB)

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Copyright information

© The Japan Wood Research Society 2018

Authors and Affiliations

  1. 1.Graduate School of Bioagricultual SciencesNagoya UniversityNagoyaJapan
  2. 2.Forestry and Forest Products Research InstituteTsukubaJapan

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