Echeweozo, E. O., et al. Journal of Radiation Research and Applied Sciences 18.1 (2025): 101247.
Polymethyl methacrylate (PMMA), a lightweight and transparent thermoplastic, has gained attention for its application in radiation shielding when doped with high atomic number materials such as bismuth oxide (Bi₂O₃). In this study, PMMA composites containing 10% and 20% Bi₂O₃ were synthesized and evaluated for their shielding properties.
The composites were prepared by ball milling PMMA with Bi₂O₃ for 30 minutes, followed by pressing under 225 bar and heat treatment at 200 °C for 1 hour. The addition of Bi₂O₃ led to surface anomalies, as revealed by SEM, indicating strong interfacial interactions. Radiation attenuation properties were assessed, showing that the PMMA composite with 20% Bi₂O₃ exhibited the highest mass attenuation coefficient (MAC), reaching 20.74818 cm²/g at 0.015 MeV and 0.02448 cm²/g at 15 MeV. These values surpassed those of many recently developed shielding composites, particularly at higher photon energies.
The findings demonstrate that Bi₂O₃-doped PMMA is a promising material for applications in medical apron design, X-ray shielding, and gamma radiation protection in sensitive electronic installations. Its combination of flexibility, transparency, and enhanced radiation attenuation makes it a viable alternative to traditional lead-based shielding materials.
Huang, Jie, et al. Powder Technology 430 (2023): 118911.
Polymethyl methacrylate (PMMA) was utilized in the fabrication of a SiOx@carbon nanotube (CNT)/PMMA composite capsule for advanced lithium-ion battery (LIB) anodes using a Pickering emulsion template method. This process aimed to enhance the electrochemical performance of SiOx by mitigating volume expansion and improving Li+/e- conductivity.
The fabrication began with the surface modification of SiOx particles via silanization using KH550 in a water-ethanol solution at 75°C for 4 hours. This treatment generated a hydrophobic organic coating on SiOx, improving its dispersibility. The modified SiOx (m-SiOx) and CNTs were then dispersed in 10 mL of dichloromethane (DCM) via ultrasonication for 20 minutes, followed by the dissolution of 0.5 g PMMA powder into the suspension to form the oil phase.
For the aqueous phase, 40 mL of deionized water was mixed with 0.06 g of cellulose nanocrystals (CNC) using ultrasonication for 10 minutes. Subsequently, 1 g of NaCl was dissolved to screen the electrostatic forces. The oil and aqueous phases were emulsified using a homogenizer at 30,000 r/min for 5 minutes, forming stable Pickering emulsions.
PMMA facilitated the encapsulation of SiOx particles, providing structural stability and flexibility to the composite. This innovative approach significantly improved the mechanical integrity and electrochemical performance of SiOx-based LIB anodes, demonstrating the potential of PMMA in energy storage applications.
Ab Rahman, Aqila Che, Bum-Joo Lee, and Sooman Lim. Additive Manufacturing 94 (2024): 104472.
Polymethyl methacrylate (PMMA) has emerged as a promising material for biomedical applications, particularly in microneedle fabrication, due to its excellent mechanical properties and biocompatibility. A novel UV-curable PMMA resin was developed for vat photopolymerization-based 3D printing, enabling precise microneedle design with a hollow side structure to enhance drug loading efficiency.
The synthesis of UV-curable PMMA involved dissolving PMMA pellets in methyl methacrylate (MMA) to form a homogeneous solution. Ethylene glycol dimethacrylate (EGDMA) was introduced as a crosslinking agent, and the solution was stirred at 300 °C for 12 hours, followed by cooling to ensure uniform mixing. A photoinitiator, bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide (BAPO), was then added and dispersed using a planetary mixer. Upon UV exposure, the photoinitiator facilitated rapid crosslinking, producing a highly durable PMMA structure optimized for microneedle fabrication.
The formulation was carefully optimized to enhance resin viscosity, crosslinking efficiency, and mechanical stability. The resulting UV-curable PMMA exhibited superior biocompatibility and structural integrity, making it highly suitable for microneedle-based transdermal drug delivery applications. This advancement demonstrates PMMA's versatility in biomedical engineering, offering a scalable approach for precision drug administration.
What is the chemical formula of Polymethyl methacrylate?
The chemical formula of Polymethyl methacrylate is (C5O2H8)n.
What is the CAS number of Polymethyl methacrylate?
The CAS number of Polymethyl methacrylate is 9011-14-7.
What are some synonyms for Polymethyl methacrylate?
Some synonyms for Polymethyl methacrylate are 2-Propenoic acid, 2-methyl-, methyl ester, and homopolymer.
What is the melting point of Polymethyl methacrylate?
The melting point of Polymethyl methacrylate is 150 °C.
What is the density of Polymethyl methacrylate?
The density of Polymethyl methacrylate is 1.188g/ml.
What is the percentage of actives in Polymethyl methacrylate?
The percentage of actives in Polymethyl methacrylate is 95%.
In what physical state is Polymethyl methacrylate?
Polymethyl methacrylate is in a solid physical state.
What is a typical application of Polymethyl methacrylate?
A typical application of Polymethyl methacrylate is as a film-forming agent.
What is the molecular structure of Polymethyl methacrylate?
The molecular structure of Polymethyl methacrylate consists of repeating units of methyl methacrylate monomers.
How is Polymethyl methacrylate commonly used in industries?
Polymethyl methacrylate is commonly used in industries for its properties such as transparency, impact resistance, and weather resistance, making it suitable for applications in displays, automotive parts, and medical devices.
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