Russian Journal of Applied Chemistry, 2012, Vol. 85, No. 1, pp. 128−131.
Pleiades Publishing, Ltd., 2012.
Original Russian Text © D.V. Shiryaev, V.S. Gurova, N.P. Mus’ko, M.M. Chemeris, P.V. Ivanov, 2012, published in Zhurnal Prikladnoi Khimii, 2012,
Vol. 85, No. 1, pp. 134−137.
AND POLYMERIC MATERIALS
Examination of Manufacturing Porous Plate Materials
from Wheat Straw
D. V. Shiryaev, V. S. Gurova, N. P. Mus’ko,
M. M. Chemeris, and P. V. Ivanov
Altaic State Technical University, Barnaul, Russia
Received July 15, 2011
Abstract—The role of parameters of a barothermal processing wheat straw in the hydrolysis of polysaccharides
and also their inﬂ uence on the process of manufacturing porous plate materials were studied.
Treating raw materials
before modiﬁ cation
The porous materials are widely used in construction
for thermal and sound insulation. There are many
various types of porous materials made from various
raw materials and by different technologies. Common
organic raw materials for wood-ﬁ ber boards are waste
of wood work and sawmill. At the same time in Russia
annually many tons of waste after harvest of cereal crops
is produced. Involvement of agricultural plant wastes in
the manufacturing porous plate materials will solve a task
of their effective utilization.
Contemporary technology of the manufacturing the
plate materials mainly based on the use of phenol or urea
formaldehyde resins as binder. The last adversely affect
human health and their cost is fairly high. Developing new
technologies of manufacturing the clean plate materials
is topical task now.
A goal of the study is examination of regularities of
production of the porous plate material from a modiﬁ ed
plant raw material avoiding use of additional binders.
We carried out barothermal modiﬁ cation  and used
wheat straw as a raw material. The plate materials we
produced according to Scheme 1.
A density of the plate materials was measured with
accordance State Standard (GOST 7025–91).
Structural and chemical reactions proceeding in
wood components in barothermal processing resulted
in formation of binders . Previously in  we dem-
onstrated that hydrolytic destruction of the most part of
polysaccharides occurred in the barothermal processing
of the wheat straw and wood. The resulting low molecular
weight water-soluble products, pentose
and hexose (reduc-
ing substances) possess aldehyde groups which can react
with the structural elements of lignin with the formation
of crosslinked structures.
Presumable interaction of the products resulted in the
modiﬁ cation is pictured on Scheme 2.
A feature of production of the plate materials from
a press-paste resulted in the barothermal processing is
formation of the binders under heterogeneous conditions.
Scheme 1. Producing the plate materials