INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
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DEVELOPMENT OF TECHNOLOGY FOR THE PRODUCTION OF CELLULOSE
AND CARBOXYMETHYL COMPOSITIONS FROM DOMESTIC RAW MATERIALS
Xalilov.Sh.U., Jobborova.M.A.,
Kulturayeva .Sh.A.,Xakimova M.O`.
Tashkent institute of chemical technology
Annotation:
This article is devoted to development of innovative technology for obtaining
cellulose from cotton linnt and obtaining cellulose from cotton lint and on the basis of the
development of chemical industry in the Republic of Uzbekistan. The study elaborates the
optimal technological parameters for cellulose removal, analyzes its quality indicators and
physicochemical properties. He also developed technology for production of carboxymethyl
compositions, which are used as a stabilizing agent of drilling mixtures for oil and gas industry.
The research results serve to increase cost efficiency, provide the local market with import-
substituting products and create new jobs.
Keywords:
Cellulose, carboxymethyl compositions, "California" poplar, cotton linth, chemical
processing, innovative technology, oil and gas industry, drilling mixes, cost-effectiveness,
secondary raw materials, physicochemical analysis.
The chemical industry is currently intensively developing as one of the most important sectors
of the economy on a world scale. Ensuring competitiveness in the global market by increasing
the number of products, improving quality and reducing cost is one of the important tasks in
this industry. Especially cellulose and its organic materials are widely used in such industries as
chemical, medical, pharmaceutical, paint and varnish, oil and gas and construction. Therefore,
the urgent task is to improve the processes for pulp extraction from industrial waste and to
create technologies for the production of high-quality products.
Important measures are being taken to develop the chemical industry in the Republic of
Uzbekistan. In particular, the "Development Strategy of New Uzbekistan for 2022-2026" pays
special attention to the production of high value-added products based on deep processing of
local raw materials and the introduction of new technologies. Within this strategy, it is
important to obtain cellulose from local raw materials, e.g. fertilizer industry waste and
secondary resources such as cotton linte, and to develop technology for the synthesis of
carboxymethyl compounds on its basis.
The purpose of identification of optimal technological parameters for obtaining cellulose
suitable for chemical processing from the secondary raw material of the "California" variety
poplar tree with the creation of innovative technology for synthesis of cellulose, cotton
cellulose and carboxymethyl starch-based compositions. Establishment of the process of
cellulose extraction by chemical processing of the secondary raw material of the "Californian"
variety poplar.
The Effect of Different Parameters of Poplar Wood in the Natron Boiling Period on the Quality
Indicators of Cellulose
1-jadval
Phase I
Phase II
Sellyulozaning sifat kо‘rsatkichlari
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ISSN: 2692-5206, Impact Factor: 12,23
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Journal:
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page 1409
№ NaOH,
g/l
yanchish
τ,
minutes,
80-100
0
S
Boilin
g teeth
τ,
minute
s
Boiling
tooth,
t
0
C
sel-za
unumi,
%
namlik
%
kul
miq-
ri,%
α –
sel-
a, %
PD
1 10
20
20
100
-
-
-
-
-
2 20
40
40
120
-
-
-
-
-
3 30
60
60
140
47,4
3,3
1,6
93,2
1150
4 40
80
80
160
54,6
3,4
0,93
94,8
1050
5 50
100
100
180
46,1
3,3
0,72
95,1
720
The table shows that alkaline boiling at different temperatures was carried out, with mechanical
milling at intervals of 60 min at the first stage and alkaline processing at 1600C at the second
stage for 80 min with the participation of 40 g/l alkali solution, chosen as the optimal mode.
It has a pulp yield of 54.6%, ash content of 0.93%, α-cellulose 94.8%, and a polymerization rate
of 1050.
From Table 2, it can be observed that the water vapor absorption of samples at different specific
moistures is different, i.e., the rate of water vapor sorption of poplar cellulose is higher than
cellulose, or the hydrophility of tapinambur cellulose samples is higher compared to poplar
cellulose. From such indicators it is possible to conclude that the reactivity of celluloses
obtained from the variety "Fayz-Baraka" of the Tapinambur plant is high.
Water vapor sorption of cellulose samples at 250C
2-jadval
Samples
Cotton
Cellulose
*TTCH sel-
za
Terak
daraxti sel-
si
Tapinambur «Fayz
Baraka» sel-si
Solishtirma
namlik, %
Shimuvchanlik darajasi, %.
10
0,20
0,30
0,40
0,50
20
0,40
0,50
0,90
1,00
30
0,60
0,60
1,10
1,40
40
0,70
0,80
1,40
1,70
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50
0,90
1,00
1,50
3,00
60
1,30
1,40
2,00
6,60
70
2,00
2,20
3,40
8,10
80
2,40
2,90
3,60
9,00
90
3,70
4,60
8,80
9,50
100
8,00
8,40
9,10
9,90
* TTCH - Fiber Waste of a Textile Enterprise
Table 3 below shows the capillary porosity characteristics of cellulose samples.
Characteristics of capillary porosity of cellulose samples
3-jadval
Namunalar
Paxta
sellyulozasi
TTCH
sellyulozasi
Terak daraxti
sellyulozasi
Tapinambur «Fayz
Baraka» sellyuloza
X
m
, g/g
0,0143
0,0137
0,0125
0,0052
Solishtirma
sirt,
S
ud
*m
2
/g
49,876
47,790
44,008
24,905
Poralar-ning
umumiy xajmi *
Wo, sm
3
/g
0,095
0,089
0,074
0,215
kapillyar radiusi R
k
,
A
0
38,8
49,2
76,3
112
From Table 3, we can see that the relative surface and relative absorption properties of cotton
and TTCH cellulose are high compared to other cellulose samples, while the Judicial index of
poplar cellulose sample is also higher than Sud of cellulose based on varieties of Tapinambur
plant. However, the Wo and Rk ratios of celluloses obtained on the basis of the Tapinambur
plant "Fayz Baraka" are higher than those of cotton, TTCH and poplar celluloses, indicating a
capillary radius of 105-112 A0.
The study of various technological methods for pulp extraction and the determination of their
optimal parameters. Determination of quality indicators: Analysis of quality indicators of the
obtained cellulose. Synthesis of carboxymethyl compositions: development of innovative
technology for synthesis of carboxymethyl compositions based on poplar and cotton cellulose
and starch. Physicochemical analysis: The study of the properties of the obtained compositions
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 05,2025
Journal:
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by physicochemical methods and the definition of their application. Implementation into
production: Implementation of the created technology on an industrial scale.
The secondary raw materials of the "California" variety poplar, cotton linth, starch and cellulose
brands obtained by chemical processing were chosen as an object for the research. Research
subjects include the process of baking in alkaline solution, synthesis of technical carboxymethyl
compositions based on the obtained cellulose and starch and their application in oil and gas
industry as stabilizing mixtures.
In the experiment, physicochemical methods such as viscosimetry, titrometry, ash
determination of samples, sorption, nabuxometry and determination of water permeability were
used. These methods played an important role in determining the qualitative indicators of
cellulose and carboxymethyl compositions and their characteristics analysis. Possibility of
extracting cellulose from California poplar: The possibility of extracting cellulose from waste
from the manufacturing industry has been investigated for the first time.
To produce carboxymethylcellulose (CMS), sodium salt of monochloroacetic acid and
cellulose are used as raw materials. In order to obtain in industry by the mechanochemical
method of CMS, cellulose in a monoapparatus is mersered (in a volume sufficient to moisten
the cellulose mass) in an 18-probe alkali solution at normal temperature, ground and separated
into fibers. Then at 35-400C a sodium salt of dry monochloroacetic acid, in a mixed state, is
gradually boiled to form CMS.
[C6H7O2(OH)3*NaOH]n+ClCH2COONa
[C6H7O2(OH)x(OCH2COONa)y]n
The level of CMS metabolism is mainly controlled by the ratio of taking of cellulose and
sodium monochloroacetate, with the exception of the concentration of water and alkali in the
alkalic cellulose.
The dependence of the ratio of reagents on the level of exchange of CMS (cellulose : NaOH :
water = 1:2:12 mol ratio)
4-jadval
Sellyuloza:
ClCH
2
COONa
mol nisbatda
1:0,1 1:0,25 1:0,5
1:0,7
1:1,0 1:1,2
1:1,4
1:1,7 1:2
1:3
KMS
almashinish
darajasi
7,1
12,6
25,2
32
44
55
62
72
87
102
Below are the physicochemical parameters of PATS obtained from cellulose of the "California"
variety, as well as of CMS produced in industry on the basis of Tsh-88.2-12-2005 and Tsh-
2231-001-5353-5770-01.
As can be seen from the table, several grades of PATS obtained from the "California" cultivar
poplar tree cellulose that meet the requirements of all quality indicators Tsh-88.2-12-2005 and
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ISSN: 2692-5206, Impact Factor: 12,23
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Tsh-2231-001-5353-5770-01 have been obtained. They are like 105/1000, 100/950, 105/750,
95/850.
Physicochemical parameters of PATS obtained from poplar cellulose of the "California" variety,
as well as PATS produced in industry on the basis of Tsh-88.2-12-2005 and Tsh-2231-001-
5353-5770-01
5-jadval
№
Kо‘rsatkichlar
“*K-
PATS”
1Tsh
“*K-
PATS”
2Tsh
75/400
“*K-
PATS
”
2Tsh
70/300
“*K-
PATS
”
2Tsh
85/500
1 Polimerlanish
darajasi,
kam emas
1050
500
950
400
750
250-
350
850
500-
550
2 Karboksil
gruxlari
bilan
о‘rin almashish
darajasi
105
80-
100
100
65-85
105
65-75
95
80-90
3 Asosiy modda
miqdori, %
65
50
67
48
63
48
65
50
4 2%
li
suvli
eritmaning
dinamik
qovushqoqligi,
mPas
138,8
100
105
60
80
40
147,0
100
5 Suvda
eruvchanligi, %
99,2
97
98,8
98
98,4
98
98,8
98
6 Muxit, rN
10
8-12
9
8-12
9
8-11
11
8-12
*K-PATS-PATS derived from the cellulose of the "California" variety poplar tree
*1Tsh-88.2-12-2005
*2Tsh-2231-001-5353-5770-01
It was determined that the polymerization rate of the obtained PATS, the degree of substitution
with carboxyl grues, the amount of the basic substance, dynamic viscosity of the 2% aqueous
solution, water solubility and various similar indicators were found to meet the requirements of
the specified specification.
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Determination of optimal parameters: Determination of optimal parameters for cellulose
extraction processes (NaOH concentration 40 g/l, grinding time 80 min, baking time 160 min,
temperature 160°C) have been determined. A new technology was developed to synthesize
carboxymethyl compositions based on poplar, pastoral cellulose and starch. The
physicochemical properties of the resulting compositions were studied, and the sphere of their
application was determined. From the secondary raw material of "California" platform cellulose
grades with different quality parameters (yield 54.6%, α-cellulose 94.8%, polymerization rate
1050) were obtained.
Based on the resulting cellulose and starch, thermally stable carboxymethyl compositions that
stabilize drilling mixes for oil and gas industry were synthesized and put into production.
In conclusion, this study made an important contribution to the development of the chemical
industry, creating an innovative technology for the production of cellulose and carboxymethyl
compositions from local raw materials. The obtained results have significant not only scientific,
but also practical value and contribute to providing the local market with import-substituting
products, creating new jobs and increasing economic efficiency.
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