Article
Materials Science, Multidisciplinary
Kung-Tse Yang, Ya-Chen Yuan, Hao Ouyang, Fuqian Yang, Sanboh Lee
Summary: Understanding the impact of solvent-induced crack growth in polymer composites is crucial for their practical applications. In this study, the researchers investigated the crack growth in poly (methyl methacrylate)/multiwalled carbon nanotube (PMMA/MWCNT) composites under different solvent and temperature conditions. They found that the type of solvent and temperature significantly affected the areal density and growth rate of cracks, and increasing the fraction of MWCNTs reduced crack growth. The crack growth was controlled by a thermally activated process, with faster growth observed in the healed area compared to the non-cracked area.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Kun-Tse Yang, Je-Chuan Hsu, Fuqian Yang, Sanboh Lee
Summary: This study investigated the effects of UV light irradiation on multiwall-carbon-nanotube reinforced poly(methyl methacrylate) composites, focusing on changes in glass transition temperature and mechanical properties. The addition of MWCNTs increased the glass transition temperature of the composites, but UV irradiation negatively affected the properties. The research presented a simple equation to calculate the effective modulus of the composites and found that toughness and elongation were higher in composites without UV irradiation.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Polymer Science
Yu-Cheng Ju, Donyau Chiang, Ming-Yen Tsai, Hao Ouyang, Sanboh Lee
Summary: This study investigates the effects of functionalized graphene and UV irradiation on the stress-relaxation of PMMA. The results show that increasing the graphene concentration can enhance the mechanical strength and elongation at break of the material, while UV irradiation leads to polymer chain scission and loss of molecular weight.
Article
Engineering, Environmental
Leema Rose Viannie, N. R. Banapurmath, Manzoore Elahi M. Soudagar, Anilkumar Nandi, Nazia Hossain, Ashwini Shellikeri, Vinita Kaulgud, Ma Mujtaba, Sher Afghan Khan, Mohammad Asif
Summary: In this study, highly flexible polymer nanocomposite sheets were successfully developed using MWCNT in a PDMS matrix via solution processing technique, showing superior electrical conductivity and stability. An optimal filler concentration of 5.58 wt% exhibited high stiffness, tensile strength, and elongation, making it suitable for fabricating flexible strain sensors.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Sina Sharifi, Mohammad Mirazul Islam, Hannah Sharifi, Rakibul Islam, Tahmida N. Huq, Per H. Nilsson, Tom E. Mollnes, Khoa D. Tran, Corrina Patzer, Claes H. Dohlman, Hirak K. Patra, Eleftherios I. Paschalis, Miguel Gonzalez-Andrades, James Chodosh
Summary: Electron beam irradiation is an effective method for sterilizing medical devices made of PMMA, with minimal impact on its chemical properties. Mechanical and optical properties of PMMA remain largely unaffected at 25 kGy, but show slight reduction at 50 kGy. E-beam irradiation decreases surface roughness of PMMA in a dose-dependent manner, while maintaining good biocompatibility up to 50 kGy.
MACROMOLECULAR BIOSCIENCE
(2021)
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
Chemistry, Physical
Fatih Cakar
Summary: In this study, PMMA/MWCNT nanocomposite was synthesized by bulk polymerization and characterized using SEM and IGC methods to investigate surface morphology, thermodynamic properties, and solvent selectivity. The experimental results provided insights into the adsorption properties, Lewis acid-base constants, and solubility parameters of the PMMA/MWCNT nanocomposite.
SURFACE AND INTERFACE ANALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Po-Ying Huang, Yulin Zhang, Hao Ouyang, Fuqian Yang, Sanboh Lee
Summary: The study investigated the photo-stability of polylactide-poly(methyl methacrylate) blends after UV irradiation. It was found that UV irradiation decreases the crystallization temperature of PLA and demonstrates the interaction between the materials. The combination effect of UV irradiation and the interaction between PLA and PMMA determines the photo-stability of the blends.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
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
Materials Science, Multidisciplinary
Alireza Farazin, Alireza Shakeri, Hossein Mahdavi
Summary: In this study, an amphiphilic block copolymer suitable for modification of forward osmosis (FO) membrane support layers was synthesized using the ATRP method. The addition of this copolymer significantly improved the performance of the support layer, and the best performing membrane exhibited satisfactory FO performance.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Marcin Szerszen, Mariusz Cierech, Jacek Wojnarowicz, Bartlomiej Gorski, Elzbieta Mierzwinska-Nastalska
Summary: The in vitro study evaluated the color change and stability of a zinc oxide nanoparticle-poly(methyl methacrylate) nanocomposite for denture base material after immersion in different solutions. It was found that all tested materials showed significant color changes, particularly when immersed in red wine, which worsened over time.
Article
Polymer Science
Ming-Hung Tsai, Hao Ouyang, Fuqian Yang, Mao-Kuo Wei, Sanboh Lee
Summary: Understanding the structural degradation of polymers and polymer-based materials is crucial for improving the reliability and lifespan of associated structures and systems. In this study, we investigated the effect of UV irradiation on the physical aging of PLA and PMMA blends using differential scanning calorimetry. The results revealed the thermodynamic and kinetic contributions to the aging process and the decrease in enthalpy loss and activation energy with increasing UV irradiation dose.
Article
Polymer Science
Jemy James, Rosemary Johnson, Anjali R. Nair, Nitin George Eapen, Blessy Joseph, Guillaume Vignaud, Yves Grohens, David Laroze, Sana Kabdrakhmanova, Nandakumar Kalarikkal, Sabu Thomas
Summary: The objective of this study is to investigate the interaction between acrylic resin and zirconia nanoparticles, and analyze the changes in optical properties and refractive index with incremental loading of nanoparticles. PMMA reinforced with zirconia nanoparticles were prepared using dip coating, spin coating and solvent casting techniques. The spectroscopic and morphological studies provided an overall understanding of the polymer nanocomposite film. The study revealed that the refractive index and optical transparency of the nanocomposite film can be maintained with the incorporation of pure zirconia nanoparticles, and spin coating was found to be the best technique for producing thin films with high transparency and refractive index.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Behnia Sadat Mirhoseini, Alireza Salabat
Summary: Surfactant-free microemulsions (SFMEs) formed without traditional surfactants show potential applications but limited understanding. A new SFME system was reported for synthesizing polymer-based nanocomposites, showing promising results. The method can potentially produce various well-defined nanocomposites without surfactants.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Caroline Pereira, Claire Semedo Da Moura, Adele Carrado, Celine Falentin-Daudre
Summary: The modification of pure titanium implant with a biomimetic polymer allows the implant to mimic the natural bone environment. Through UV irradiation technology, polymers such as PMMA and PNaSS can be grafted onto the titanium surface. This study demonstrated that functionalized titanium surfaces improved osteoblast cell spreading and mineralization.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
