Starch based polyester type water resistant wood adhesive

Yuhuan Liu, Roger Ruan, Chengmei Liu, Xiangyang Lin, Mingyong Xie, Hong Peng, Dandan Zheng

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Corn starch is one of the most adaptable and renewable industrial raw materials since it is abundant and easy to be separated. A process for manufacturing water resistant corn starch based and formaldehyde-free wood adhesive included four steps: corn starch was denatured by solid phase oxidation to produce oxidized corn starch. The oxidized corn starch was rapidly liquefied by ethylene glycol under ambient atmosphere at 110-140°C to produce starch based polyol with high reactivation. Then the starch based reactive polyol was crosslinked with equivalent multicarboxylic acid (anhydride) through the ester bond. And pre-polymerized polyester type wood adhesive was diluted by absolute ethanol to prepare the sprayable wood adhesive. The resulting adhesive performed well as a formaldehyde-free wood adhesive. Multi-ply wood composites bonded with this polyester type adhesive had acceptable shear strengths and water resistance.

Original languageEnglish (US)
Pages (from-to)309-312
Number of pages4
JournalNongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume24
Issue number9
StatePublished - Sep 1 2008

Keywords

  • Corn starch
  • Polyesters
  • Rapid liquefaction
  • Shear strength
  • Solid phase oxidation
  • Wood adhesives

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