Article
Polymer Science
Jun Zhong, Xinyue Zhang, Xiaofeng Yu, Xuanyu Shi, Shihao Sun, Li Yang, Min Zuo, Yihu Song, Qiang Zheng
Summary: The selective distribution of silica nanoparticles grafted with crosslinked PMMA in PMMA/SAN blend was studied. Highly crosslinked PMMA chains mainly located in the PMMA-rich domains, while linear PMMA chains mainly located at the blend matrix interface. NPs grafted with slightly crosslinked chains were partially located at the interface and partially in the PMMA-rich domains. The deviation between theoretical prediction and actual location of modified NPs may be related to the heterogeneity of miniemulsion polymerization. The different locations of modified NPs induced by different grafted chain structures can result in various compatibilization effects on PMMA/SAN blend.
Article
Biochemistry & Molecular Biology
Aleksandra Wypych-Puszkarz, Onur Cetinkaya, Jiajun Yan, Ruslana Udovytska, Jaroslaw Jung, Jacek Jenczyk, Grzegorz Nowaczyk, Stefan Jurga, Jacek Ulanski, Krzysztof Matyjaszewski, Joanna Pietrasik, Marcin Kozanecki
Summary: Core-shell nanocomposites consisting of barium titanate nanocrystals grafted onto poly(methyl methacrylate) chains were prepared. The nanocomposites exhibited enhanced dielectric permittivity and improved thermal stability. The presence of ceramic nanoparticles affected the molecular dynamics and structure of the polymer chains.
Article
Materials Science, Multidisciplinary
Talaat A. Hameed, F. Mohamed, Salwa L. Abd-El-Messieh, A. A. Ward
Summary: This study synthesized (MAPbI(3))/PMMA nanocomposites and investigated their structure, optical, morphological, and electrical properties. The results showed that the nanocomposites exhibited promising photocatalytic activity and antistatic behavior.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Madhusmita Bhuyan, Smrutirekha Sahoo, Alok kumar Sahu, Perumal Alagarsamy, Dibakar Sahoo
Summary: In this paper, the authors report a significant enhancement of the relative permittivity of PMMA-based nanodielectrics in the presence of carbon dots (CDs) and neodymium-doped carbon dots (Nd-CDs). The presence of many interfaces inside the PMMA@CD composites due to nanofillers is the cause of this significant enhancement in dielectric permittivity, which is further increased in the presence of Nd-CDs. The results of this study provide important insights for the commercial use of PMMA nanodielectrics in capacitors.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Tejas Sharma, Burak Gultekin, Pawan Singh Dhapola, N. G. Sahoo, Sushant Kumar, Daksh Agarwal, H. K. Jun, Diksha Singh, Gaurav Nath, Pramod K. Singh, Abhimanyu Singh
Summary: A polymer electrolyte based on PMMA doped with IL was synthesized using solution cast method. The addition of IL increased the ionic conductivity and conductivity maximum. Various characterization techniques were used to analyze the properties of the developed IL-doped polymer electrolyte films. The optimized electrolyte was used in the fabrication of a supercapacitor and a dye-sensitized solar cell, showing good electrochemical performance.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Allif Rosyidy Hilmi, Novita Dwi Purnamasari, Wiwit Wulandari, Anisa Indah Sari, Nur Aini Fauziyah, M. Zainul Asrori, Suminar Pratapa
Summary: The thermomechanical and optical properties of PMMA/quartz and PMMA/zircon composites were studied. The addition of zircon fillers improved the storage modulus of the composites, with zircon being more effective than silica. The addition of fillers also decreased the band gap energies.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Yafei Gao, Jianmin Zhang, Jia Liang, Dongming Yuan, Weizhen Zhao
Summary: This paper reviews the preparation methods and functionalization strategies of Poly(methyl methacrylate) (PMMA) microspheres, as well as introduces its wide applications and future development trends.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Glendimar Molero, Cong Liu, Zewen Zhu, Qihui Chen, Suzanne R. Peterson, Pavan Kolluru, Hung-Jue Sue, Shuntaro Uenuma, Koichi Mayumi, Kohzo Ito
Summary: The fracture behavior of polyrotaxane (PR)-modified poly(methyl methacrylate) (PMMA) was investigated. By adding only 1 wt % of PR to the PMMA matrix, substantial improvement in fracture toughness was achieved while maintaining modulus and transparency. The interaction between PR and PMMA contributes to higher molecular mobility and enhanced molecular cooperativity, leading to the formation of massive crazing and improved fracture toughness.
Article
Materials Science, Composites
Saptarshi Ghosh, Gilad Otorgust, Alexander Idelevich, Omri Regev, Igor Lapsker, Dan Y. Lewitus, Alla Zak
Summary: By incorporating tungsten disulfide nanotubes (INT-WS2) into the PMMA matrix, improvements in flexural strength, tensile strength, impact strength, and toughness were achieved. The reinforcing mechanism of INT-WS2 is attributed to the homogeneous distribution and alignment of nanotubes in the molded samples.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Fatoumata Ide Seyni, Lawrence Barrett, Steven Crossley, Brian P. Grady
Summary: The use of carbon nanotubes with varying chemistry (diblock nanotubes) at the PS/PMMA interface can increase fracture toughness, while single-chemistry nanotubes do not have a reinforcing effect. However, the presence of agglomerates of carbon nanotubes may limit their effectiveness in toughening the interface.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Polymer Science
Glendimar Molero, Chia-Ying Tsai, Cong Liu, Hung-Jue Sue, Shuntaro Uenuma, Koichi Mayumi, Kohzo Ito
Summary: The mechanical and scratch behaviors of polyrotaxane (PR) modified poly(methyl methacrylate) (PMMA) were systematically investigated in this study. The findings suggest that the methacrylate functional group on PR induces favorable molecular interactions with the PMMA matrix, leading to improved tensile and compressive properties and significantly enhanced scratch resistance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Ehsan Shahrousvand, Mohsen Shahrousvand
Summary: This study aimed to prepare biocompatible and hydrophilic polyurethane (PU) nanocomposites using cellulose nanocrystals (CNCs) and cross-linked poly (2-hydroxyethyl methacrylate) (PHEMA), and examined their properties through various experiments. The results showed that these materials exhibited good biocompatibility and suitable mechanical properties, making them potential candidates for biomedical applications.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Polymer Science
Soheil Sharifi, Isabel Asenjo-Sanz, Jose A. Pomposo, Angel Alegria
Summary: The molecular dynamics of a copolymer composed of methyl methacrylate (MMA) and (2-acetoacetoxy)ethyl methacrylate (AEMA) monomers and the influence of intra-to intermolecular cross-links of AEMA units with ethylenediamine (EDA) were studied. The results showed that cross-linking had a significant impact on the copolymer's dynamic processes, glass transition temperature Tg, and dynamic heterogeneity, while having minimal effect on the secondary relaxation process.
Article
Polymer Science
Z. K. Heiba, Mohamed Bakr Mohamed, A. M. Aldhafiri, A. M. El-naggar, A. M. Kamal, A. A. Albassam
Summary: In this study, the properties and structural changes of PMMA/MWCNTs materials doped with different ratios of MnFe2O4/xZnMn(2)O(4) fillers were investigated. Various analysis techniques and instruments were used to study the nanoscale characteristics of the fillers, the structure of the polymers, and the optical and electrical properties. The results showed that the doping of fillers can reduce the band gap energy of the materials and influence their optical properties and electrical parameters.
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Naharullah Jamaluddin, Yu- Hsu, Taka-Aki Asoh, Hiroshi Uyama
Summary: In this study, nanocomposites of PMMA and CNFp were successfully prepared using a solution casting technique. The experimental results showed that CNFp exhibited good compatibility and uniform dispersion in the PMMA matrix, indicating great potential for various applications.
Article
Polymer Science
Gh. Mohammed, Adel M. El Sayed, S. El-Gamal
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2020)
Article
Polymer Science
Somia Awad, Samy El-Gamal, Adel M. El Sayed, Esam E. Abdel-Hady
POLYMERS FOR ADVANCED TECHNOLOGIES
(2020)
Article
Engineering, Chemical
Samy El-Gamal, Adel M. El Sayed
POLYMER ENGINEERING AND SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Adel M. El Sayed
Summary: Perovskite-polymer hybrids, prepared by mixing nano-sized BiFeO3 and NaTiO3 with PMMA through solution casting, exhibit improved physical properties and flexibility suitable for various electric and optoelectronic applications. Characterization techniques like X-ray diffraction, FTIR, and SEM-EDS were used to evaluate the structural properties, interactions, and thickness of the composite films. The incorporation of nano-fillers narrowed the optical bandgap while maintaining high transmittance, making these composite films suitable for thin film capacitors and bio-engineering systems.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Physics, Condensed Matter
Adel M. El Sayed
Summary: The physical properties of nickel oxide (NiO) were tuned using a codoping approach to develop multifunctional and high-performance p-type transparent conducting oxide films. The optical parameters and electrical properties of the films were significantly influenced by the doping ratios of Pb and Ir, making them suitable for optoelectronic applications such as smart windows and solar cells.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Physics, Multidisciplinary
S. El-Sayed, Adel M. El Sayed
Summary: Metal oxides/polymer nanocomposites prepared via sol-gel method were successfully dispersed into polymer blend, affecting its properties like optical bandgap and ac conductivity. The nano-fillers showed promising potential for applications in the semiconductor industry.
BRAZILIAN JOURNAL OF PHYSICS
(2021)
Article
Physics, Multidisciplinary
S. El-Sayed, S. Saber, Adel M. El Sayed
Summary: The synthesis of polymeric blends and nanocomposites with tuned properties has attracted global attention. This study focused on semicrystalline PVA/PEO blend films loaded with clay nanoparticles, investigating their characteristics using various techniques. Results showed that clay Nps incorporation affected the blend's crystallinity, surface morphology, and optical and dielectric properties, demonstrating potential applications in electric and optoelectric fields.
Article
Chemistry, Multidisciplinary
Adel M. El Sayed, S. Saber
Summary: In this study, high purity NiO nanoparticles were prepared and introduced into a CMC-PVP blend. The results showed that the dispersion of NiO nanoparticles inside the blend and their complexation with the functional groups in the blend influenced the film structure. The introduction of NiO nanoparticles also resulted in reduced transparency and modified reflectivity of the films. Additionally, the NiO nanoparticles improved the conductivity and refractive index of the films.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Physics, Multidisciplinary
Adel M. El Sayed, A. M. Abdelghany, A. Abou Elfadl
Summary: Polymer blends and nanocomposites with optimized properties were prepared in this study. The addition of MgO nanoparticles enhanced the mechanical properties of the blend, but also affected its toughness and elongation at break. Additionally, the nanocomposites exhibited good antibacterial activity and optical properties, making them suitable for optical devices and food packaging applications.
BRAZILIAN JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
A. Abou Elfadl, E. Tarek, Adel M. El Sayed
Summary: Introducing nano-sized fillers into polymer nanocomposites improves the matrix/reinforcement interface and enhances material performance. In this study, sol-gel prepared PbO, MgO, and Pb0.5Mg0.5O powders were added to a poly (vinyl acetate)/poly (vinyl chloride) blend. The doped blend showed improved optical, mechanical, and thermal properties, making it a suitable candidate for coating and packaging applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Polymer Science
Ghada Mohammed, Samy El-Gamal, Adel M. El Sayed, Suzan Saber
Summary: Nanocomposite solid polymer electrolytes (NCSPEs) containing Y2O3 nanosheets were prepared and incorporated into a polymer matrix. The addition of NaClO4 or LiCl modified the structure and optical properties of the films. The nanocomposite films exhibited low transmittance, high refractive index, and tunable band gap. The complexation resulted in a significant increase in σ_ac, indicating improved conductivity.
POLYMER INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Abeer S. Altowyan, Mohamed Shaban, Khaled Abdelkarem, Adel M. El Sayed
Summary: To create a safe environment, humanity should focus on the development of renewable energy technology. In this study, high conductivity iridium oxide (IrOx) films were spin-cast on glass substrates, and it was found that the thickness and morphology of the films affected their absorption and reflectance. By using these IrOx films, a highly efficient photoelectrochemical (PEC) hydrogen production catalyst was developed.
Article
Polymer Science
Asmaa M. M. Ibrahim, A. Abou Elfadl, Adel M. El Sayed, Ibrahim M. Ibrahim
Summary: This study focuses on improving the multifunctionality of Chitosan-Polyethylene Oxide (Ch.-PEO) blend for various industrial applications through the incorporation of graphene oxide (GO) and multi-walled carbon nanotubes (MWCNTs). The results demonstrated positive interactions between the nanofillers and the blend chains, decreased crystallinity of the blend, and improved optical and dielectric properties. Furthermore, the blend and nanocomposite films showed antimicrobial activity, suggesting potential use in food packaging applications.
Article
Energy & Fuels
Mohamed Shaban, Adel M. El Sayed
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2020)