Articles Vol. 4. Issue 2, 2025

Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250201

DFT INVESTIGATION OF BAND GAP MODULATION BY SUBSTITUTIONAL IMPURITY DEFECTS IN ABX₃ PEROVSKITES

Khamzaev A., Marasulov M.B., Nurgaliev I.N.


In this study, density functional theory (DFT) calculations were employed to investigate the structural and electronic properties of mixed halide perovskites with the general formula ABX₃, where partial substitution of the A-site methylammonium (MA⁺) cation was performed using NH₄⁺, ... Read More

Keywords:  halide, perovskites, DFT, calculations, cation
07 July 2025  
Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250202

POLYAMPHOLYTIC PROPERTIES OF PROTEIN FROM BOMBYX MORI SILKWORM PUPAE

Avazova O.B., Milusheva R.Yu., Rashidova S.Sh.


The polyampholytic properties of Bombyx mori silk protein were studied using conductometry, viscometry, and potentiometry methods. During the titration of a 1% protein solution by the conductometry method, an increase in electrical conductivity (Gsm) was observed in a linear ... Read More

Keywords:  bombyx, mori, protein, solution, isoelectric
08 July 2025  
Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250203

SOL-GEL SYNTHESIS OF CELLULOSE-SILICA COMPOSITES BASED ON MICRO - AND NANOCRYSTALLINE CELLULOSE

Ergashev D.J., Jumaev A.H., Atakhanov A.A., Zhu X.


Sol–gel derived hybrid organic–inorganic materials offer significant advantages for optical and structural applications due to their facile synthesis, ease of shaping and patterning, and excellent mechanical and optical properties. This study focuses on synthesizing novel cellulose-silica composites (CSCs) based ... Read More

Keywords:  Cellulose, nanocrystals, microcrystalline, cellulose, cellulose-silica
04 July 2025  
Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250204

EFFECT OF LOW MOLECULAR WEIGHT POLYETHYLENE ON STRUCTURE AND PROPERTIES OF CARBON-FILLED POLYETHYLENE COMPOSITIONS

Kudyshkin V.O., Bozorov N.I., Madiev R.Kh., Ruziev B.Kh., Ashurov N.Sh., Ashurov N.R., Rashidova S.Sh.


Polymer composites based on high-density polyethylene, carbon black and low-molecular-weight polyethylene were obtained. The addition of low molecular weight polyethylene increases the melt flow index and helps to reduce the particle size of the dispersed phase in the composition. ... Read More

Keywords:  Low-molecular-weight, polyethylene, lubricant, high-density, polyethylene
07 July 2025  
Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250205

ELECTRICAL CONDUCTIVITY AND DIELECTRIC PERMITTIVITY OF COMPOSITE POLYMER MATERIALS BASED ON POLYETHYLENE CONTAINING COPPER NANOPARTICLES

Saitkulov D.R.


Two types of composite materials containing micro- and nanoparticles of copper in a polyethylene matrix were created and studied. Transmission electron microscopy established that the size of the formed nanoparticles is 13 nm, while X-ray phase analysis indicated that ... Read More

Keywords:  Composite, nanomaterial, polyethylene, copper, electrical
07 July 2025  
Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250206

DEVELOPMENT OF COMPOSITE MATERIALS BASED ON SOME METAL PHOSPHATES

Umarov Sh.Sh., Turaev Kh.Kh., Tojiev P.J., Djalilov A.T.


Despite the small share of nanoparticles in the chemical industry, the demand for modifiers is growing every day. This is due to their high physical, mechanical and operational properties, resistance to aggressive media and their ability to be used ... Read More

Keywords:  polypropylene, polyethene, polyamide-, ammonium, polyphosphate
07 July 2025  
Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250207

PLASTIC POLLUTION OF THE ENVIRONMENT: IMPACT ON HUMAN HEALTH AND WAYS TO PREVENT IT

Sarymsakov A.A., Yunusov Kh.E.


This review article discusses key solutions to the problem of plastic waste accumulation in both the environment and the human body. It identifies promising directions in the development of new technologies aimed at significantly reducing the volume of polymer ... Read More

Keywords:  natural, and, synthetic, polymers, recycling
08 July 2025  
Uzbekistan Journal of PolymersVol. 4. Issue 2. (2025) 250208

A WORD ABOUT PROFESSOR BORIS OKSENGENDLER

N.R. Vokhidova


On this wonderful day, we welcome the famous scientist, kind mentor, and charming man, Oksengendler, on their 80th anniversary. Boris Leonidovich Oksengendler is a prominent scientist, theoretical physicist, teacher, and thinker. His work has played a key role in the development ... Read More

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Announcement

Dear scientists, colleagues!

We inform you that according to Decision № 355/5 dated June 7, 2024, and № 357 dated Jule 3, 2024 of the Higher Attestation Commission under the Ministry of Higher Education, Science and Innovation of the Republic of Uzbekistan the journal "Uzbekistan Journal of Polymers" is included in the List of Recommended Scientific Editions for Publication of Basic Scientific Results of Dissertations by Supreme Attestation Commission of the Republic of Uzbekistan for Doctor of Philosophy (PhD) and Doctor of Science (DSc) in the specialties: chemical sciences (02.00.00), pharmaceutical sciences (15.00.00), physical and mathematical sciences (01.00.00) and technical sciences (05.00.00)

Regards
Editorial Office
Uzbekistan Journal of Polymers

Uzbekistan Journal of Polymers Vol. 2. Issue 2. (2023)

Special Issue:
Dedicated to the 80th anniversary of the outstanding Uzbek chemist Sayyora Sharafovna Rashidova

POLYMER   |  PHYSICS   |  CHEMISTRY   |  NANO-PARTICLE


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