Related Experiment Video
Updated: Jan 31, 2026

Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
Preparation and characterization of resorcinol-dialdehyde starch-formaldehyde copolycondensation resin adhesive
Ping Li1, Yiqiang Wu2, Ya Zhou2
1College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, PR China; College of Art and Design, Xiangnan University, Chenzhou, Hunan 423000, PR China.
Abstract:
A resorcinol-dialdehyde starch-formaldehyde (RDSF) copolycondensation resin adhesive was prepared by substituting high reactive dialdehyde starch for a portion of formaldehyde in the formulation. Fourier transforms infrared spectrometer (FTIR) analysis results confirmed that the copolycondensation reaction of the dialdehyde starch with resorcinol and formaldehyde was successful. The curing property, thermal stability, permeability and crystal structure of the RDSF adhesive were characterized using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscope (SEM), X-ray diffraction (XRD). The solids content, viscosity, curing time, bonding strength were also obtained. The results showed that the RDSF adhesive had a higher solids content, moderate viscosity, shorter curing time and better bond strength than a standard resorcinol-starch-formaldehyde (RSF) adhesive. It was found that dialdehyde starch could accelerate the curing rate, while decreasing the curing temperature and heat release during the curing process of RDSF. The dense cross-linked structure of the dialdehyde starch and resorcinol-formaldehyde (RF) system produced improved thermal stability. SEM results showed that the RDSF adhesive formed a thin and continuous adhesive layer on the surface of a poplar board, and filled the pores of the wood, which improved the bond strength. The crystal structure of the RDSF was not altered by addition of the starch, and the physicochemical properties of the adhesive were similar to those of a normal resorcinol-formaldehyde resin.
More Related Videos
Related Concept Videos
Adhesion
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Cell Adhesion in Plants
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
Immunoglobulin-like Cell Adhesion Molecules
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Intracellular Signaling Affects Focal Adhesions
Some...
Cell Adhesion Molecules - Types and Functions
CAM Families
The Integrin family of proteins is primarily involved...
Laminins are the Adhesive Proteins of Basal Lamina
In humans, the five forms of alpha chains are LAMA 1, LAMA 2, LAMA 3, LAMA 4, and LAMA 5. The four forms of beta chains are LAMB 1, LAMB 2, LAMB 3, and LAMB 4. The three forms of gamma...

