FUNCTIONALIZATION OF SILICON DIOXIDE PARTICLES OF NATURAL ORIGIN WITH POLYMETHYLMETHACRYLATE
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Belgorodskiy Gosudarstvennyy Tehnologicheskiy Universitet im. V.G. Shuhova
2.
Belgorod State Technological University named after V.G. Shukhov
(docent)
NIL «Razrabotka nauchno-tehnicheskih osnov sozdaniya polimernyh sistem iz vozobnovlyaemogo rastitel'nogo syr'ya»
Russian Federation
NIL «Razrabotka nauchno-tehnicheskih osnov sozdaniya polimernyh sistem iz vozobnovlyaemogo rastitel'nogo syr'ya»
Russian Federation
3.
Belgorodskiy Gosudarstvennyy Tehnologicheskiy universitet imeni V.G. Shuhova
(Teoreticheskaya i prikladnaya himiya, aspirant)
graduate student from 01.01.2022 to 01.01.1926
NIL «Razrabotka nauchno-tehnicheskih osnov sozdaniya polimernyh sistem iz vozobnovlyaemogo rastitel'nogo syr'ya»
Belgorod, Belgorod, Russian Federation
graduate student from 01.01.2022 to 01.01.1926
NIL «Razrabotka nauchno-tehnicheskih osnov sozdaniya polimernyh sistem iz vozobnovlyaemogo rastitel'nogo syr'ya»
Belgorod, Belgorod, Russian Federation
4.
Belgorod State Technological University named after V.G.Shukhov
student
Russian Federation
student
Russian Federation
5.
NIL «Razrabotka nauchno-tehnicheskih osnov sozdaniya polimernyh sistem iz vozobnovlyaemogo rastitel'nogo syr'ya»
6.
NIL «Razrabotka nauchno-tehnicheskih osnov sozdaniya polimernyh sistem iz vozobnovlyaemogo rastitel'nogo syr'ya»
Type:
Article
Pages:
from 63
to 68
Status:
Published
Received:
27.01.2026
Accepted:
28.01.2026
Published:
28.01.2026
Language:
Russian
Keywords:
SILICON DIOXIDE PARTICLES, POLYMETHYLMETHACRYLATE, MODIFICATION, HYDROPHOBIZATION, RICE HUSKS
Abstract:
This paper examines the functionalization of plant-based silicon dioxide particles with polymethyl methacrylate. We examine the production of silicon dioxide (SiO2) from an alternative, inexpensive, natural raw material-namely, rice husks-as their SiO2 content reaches 25-30% by weight. Silicon dioxide is obtained from rice husks in several stages. The rice husks are first treated with a weak acidic H2SO4 solution to remove contaminants and impurities, followed by alkaline hydrolysis using a NaOH solution. A more concentrated H2SO4 solution is used to precipitate amorphous silica and remove residual alkaline media. The resulting acidified solution is then washed several times with distilled water to reduce the concentration and remove excess acid. The residue is centrifuged, dried in a vacuum oven, and ground to a fine powder. After milling, silicon dioxide (SiO2) powder obtained from rice husks is modified with polymethyl methacrylate (PMMA) during polymerization. After several days, the material is dried in a vacuum oven and ground to a fine powder. To confirm the formation of the PMMA polymer shell on SiO2 particles, wetting angle studies were conducted on unmodified and modified powder using the sessile drop method in the liquid phase of distilled water. Fourier transform infrared spectroscopy analysis was also performed to more accurately identify functional changes on the material surface. Scanning electron microscopy was used to study the transformation of the powder surface after the formation of the PMMA-based polymer shell. The studies revealed that modification not only increases the surface hydrophobicity but also promotes a more uniform distribution of SiO2 particles, preventing their agglomeration. This may subsequently have a positive effect on the transparency of the final material, as well as contribute to improved interaction with various polymer matrices.
This paper examines the functionalization of plant-based silicon dioxide particles with polymethyl methacrylate. We examine the production of silicon dioxide (SiO2) from an alternative, inexpensive, natural raw material-namely, rice husks-as their SiO2 content reaches 25-30% by weight. Silicon dioxide is obtained from rice husks in several stages. The rice husks are first treated with a weak acidic H2SO4 solution to remove contaminants and impurities, followed by alkaline hydrolysis using a NaOH solution. A more concentrated H2SO4 solution is used to precipitate amorphous silica and remove residual alkaline media. The resulting acidified solution is then washed several times with distilled water to reduce the concentration and remove excess acid. The residue is centrifuged, dried in a vacuum oven, and ground to a fine powder. After milling, silicon dioxide (SiO2) powder obtained from rice husks is modified with polymethyl methacrylate (PMMA) during polymerization. After several days, the material is dried in a vacuum oven and ground to a fine powder. To confirm the formation of the PMMA polymer shell on SiO2 particles, wetting angle studies were conducted on unmodified and modified powder using the sessile drop method in the liquid phase of distilled water. Fourier transform infrared spectroscopy analysis was also performed to more accurately identify functional changes on the material surface. Scanning electron microscopy was used to study the transformation of the powder surface after the formation of the PMMA-based polymer shell. The studies revealed that modification not only increases the surface hydrophobicity but also promotes a more uniform distribution of SiO2 particles, preventing their agglomeration. This may subsequently have a positive effect on the transparency of the final material, as well as contribute to improved interaction with various polymer matrices.
Keywords:
SILICON DIOXIDE PARTICLES, POLYMETHYLMETHACRYLATE, MODIFICATION, HYDROPHOBIZATION, RICE HUSKS
SILICON DIOXIDE PARTICLES, POLYMETHYLMETHACRYLATE, MODIFICATION, HYDROPHOBIZATION, RICE HUSKS
