|Table of Contents|

Improve the Water Resistance of Soy-based Adhesive by using Glutaraldehyde(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2009年06期
Page:
1062-1066,1070
Research Field:
Publishing date:

Info

Title:
Improve the Water Resistance of Soy-based Adhesive by using Glutaraldehyde
Author(s):
LI Fei; LI Xiao-ping; WENG Xiang-li; LIU Wei; WANG Wei-hong
Key Laboratory of Bio-based Material Science and Technology of the Ministry of Education，Northeast Forestry University，Harbin 150040，Heilongjiang，China
Keywords:
Defatted soy flour; Adhesive; Glutaraldehyde; Modification; Water resistance
PACS:
TQ432.73
DOI:
10.11861/j.issn.1000-9841.2009.06.1062
Abstract:
An investigation was conducted to improve the water resistance of soy flour（SF)-based wood adhesive by using sodium dodecyl sulfate（SDS）and glutaraldehyde（GA)，and the resulted soy glue was applied to poplar plywood.The effects of pH，GA dosage，reaction time and storage time on water resistance and apparent viscosity were studied in the paper.Sodium dodecyl sulfate-polyacrylamide gel electrophoresis（SDS-PAGE）and Fourier transform infrared spectrometry（FT-IR）were used to analyze the mechanism of bonding strength reinforcing.Results indicated that optimal synthesis parameters were：pH12.0，GA usage 0.80wt%（based on the mass of defatted soy flour)，reaction time 1.0 h and reaction temperature 30.0℃，respectively.Adhesive strength was improved up to 0.68 MPa after water treatment at 63℃ for 3.0 hours according to GB/T 9846-2004 Plywood.It is presumed that crosslinkage can be formed based on SDS-PAGE analysis and pyridine ring was observed from FT-IR spectra.These may explain why such adhesive existed better resistant to water.

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Last Update: 2014-09-12