|Table of Contents|

Studies of Crosslinked Soybean Protein Adhesive for Wood(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2018年02期
Page:
310-314
Research Field:
Publishing date:

Info

Title:
Studies of Crosslinked Soybean Protein Adhesive for Wood
Author(s):
LIU Jun-hong1;  HUANG Yong2;  ZHOU Shi-lin1;  CAI Yang1;  REN Ze1
(1.Sichuan Chemical and Technology School, Luzhou 646005, China; 2.Sichuan University of Science and Engineering, Zigong 643000,China)
Keywords:
Defatted soybean protein; Plywood adhesive; Hexamethylenetetramine; Adhesive properties
PACS:
S565.1；TU58+1.1
DOI:
10.11861/j.issn.1000-9841.2018.02.0310
Abstract:
A base glue was prepared by sodium hydroxide modified defatted soy protein powder, based on the base glue, the modified soybean protein adhesive for plywood was prepared with PVA solution, and hexamethylenetetramine as chemical crosslinker. The effects of HMTA usage, PVA solution amount(PVA mass percentage concentration 12%), hot pressing temperature and hot pressing time on adhesive properties were studied by orthogonal test. Structure and heat resistance of soybean protein adhesive were characterized by both FT-IR and TGA. The results showed that the soybean protein adhesive had relatively good adhesion properties with the usage of HMTA, the hot pressing temperature and the hot pressed time was 6.5%, 140℃ and 10 min respectively. After the sample was heated at 120℃ for 1 h, the infrared bands of amide I band and amide II band move towards high wave number. The results showed that the number of hydrogen bonds in the protein decreased at high temperature, the peaks of 1 236 and 1 007 cm-1 attributed to C-N of HMTA got smaller. The results meant HMTA was involved in the chemical crosslinking reaction and the usage of HMTA can improve the heat resistance of soy protein adhesive.

References:

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Last Update: 2018-04-03