Effect of Guar
Gum on Tensile Strength and Moisture Resistance Properties of Sodium Silicate as
Wood Adhesive
Choudhary Manju, Pal Bhupendra and Meenakshi
Res. J. Chem. Environ; Vol. 27(9); 83-91;
doi: https://doi.org/10.25303/2709rjce083091; (2023)
Abstract
Sodium silicate has excellent binding qualities and has potential uses in a variety
of areas due to its non-toxic, odor-free and fire proof properties. It is very cheap
and volatile organic compound free from other available harmful organic adhesive
materials. In spite of a lot of positive points, low water resistance has limited
its usage as an adhesive in the wood industry on a wide scale. To enhance the bonding
properties of sodium silicate for teak wood, three sets of sodium silicate adhesive
(simple sodium silicate, modified sodium silicate with silica gel G and guar gum
with modified sodium silicate) were prepared.
The results showed that modified sodium silicate with 6% guar gum works best for
tensile strength as well as best for water resistance. Results of FT-IR data and
SEM showed that guar gum was successfully introduced in silicate structure, having
good thermal stability in the range of 270C-8000C supported by TGA results.
