Document Type : Research Paper
Authors
1 Department of Wood and Paper, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran.
2 Faculty of Wood and Paper, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
Abstract
In this study, Wheat straw particle boards were produced using a mixture of wheat straw and
cotton bolls with Urea formaldehyde resin and its properties were reinforced with nanoclay.
Cotton bolls and wheat straw particles were mixed at the ratio of 40:60, 60:40 and 80:20
percents, respectively. Nanoclay was used at two levels of 0 and 2 percents based on oven dried
weight of resin. Control samples were made of Wheat straw particle. Mechanical and physical
properties (modulus of rupture, modulus of elasticity, internal bonding, water absorption and
thickness swelling after 2 and 24h soaking in water) of the produced boards were measured.
The results revealed an increase in cotton bolls in the mixture particles, leads to an increase of
the bending strength, modulus of rupture and modulus of elasticity of the boards. The results
also indicated that water absorption and thickness swelling after 2 and 24h immersion in water
decreased with increase in nano clay and cotton bolls percents.
Keywords
)