Article
Materials Science, Composites
Marta Zaccone, Irene Kociolek, Alberto Frache, Costanzo Bellini, Vittorio Di Cocco, Marco Monti
Summary: This paper evaluates the abrasion resistance of a carbon fiber composite filled with layered-silicate clay nanoparticles. The study investigates the dispersion and performance of the clay-epoxy nanocomposite, and determines the optimal content for fiber composite production. The nanocomposite mixture is prepared by dispersing clay nanoparticles in the epoxy monomer, followed by vacuum infusion to produce the fiber reinforced composite. The presence of nanoclay reduces weight loss and damage on the impacted surface.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Multidisciplinary
Yeji Na, Lee Ku Kwac, Hong Gun Kim, Yong Lak Joo, Jin-Hae Chang
Summary: In this study, colorless and transparent polyimide (PI) nanocomposite films were synthesized by dispersing organoclay in poly(amic acid) through a solution intercalation method. The thermomechanical properties and morphology of the films were investigated with different content of organoclay. It was found that the film with a 0.50 wt% organoclay content exhibited the best physical properties, while the properties deteriorated when the organoclay content exceeded a critical content.
Article
Polymer Science
Rodrigo Fiel, Ingrid D. Barcelos, Ricardo H. Goncalves, Mario R. S. Soares, Gabriel Rocha, Caio M. P. Silva, Valmor R. Mastelaro, Edson R. Leite
Summary: This study presents a simple one-pot approach to exfoliate and functionalize MoS2 to form nanocomposites with a polymer matrix, demonstrating improved thermal stability while affecting the glass transition temperature and mechanical properties.
Article
Polymer Science
Simon Faba, Marina P. Arrieta, Angel Aguero, Alejandra Torres, Julio Romero, Adrian Rojas, Maria Jose Galotto
Summary: This article proposes a method using supercritical carbon dioxide (scCO(2)) to obtain compostable bionanocomposite foams based on PLA and organoclay. The foams showed a closed cell and uniform cell structure with enhanced thermal stability and improved overall mechanical performance. The water uptake behavior demonstrated that the foams had low water absorption, and they also disintegrated under composting conditions. Therefore, these bionanocomposite foams seem to be a promising sustainable alternative for applications such as food packaging.
Article
Materials Science, Composites
Aleksandra Jelic, Aleksandar Marinkovic, Milica Sekulic, Stefan Dikic, Vukasin Ugrinovic, Vladimir Pavlovic, Slavisa Putic
Summary: In this study, halloysite nanotubes (HNT) were modified and incorporated with epoxy resin to prepare nanocomposite materials with enhanced mechanical properties. The use of APTES and two-step modified HNT with DGEBA significantly increased the tensile strength and strain at break of the nanocomposites, improving their mechanical performance.
POLYMER COMPOSITES
(2021)
Article
Chemistry, Applied
Marija Pergal, Gordana Gojgic-Cvijovic, Milos Steinhart, Dragan Manojlovic, Sanja Ostojic, Lato Pezo, Milena Spirkova
Summary: The influence of soft segment content on the functional properties of polyurethane network/organoclay nanocomposites was studied. Decreasing soft segment content led to a higher degree of phase separated microstructure and improvements in multiple properties, while also reducing crosslinking density and hydrophobicity.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Composites
Emine Hilal Mert, Hatice Hande Mert
Summary: In this study, experimental design methodology was used to prepare polystyrene based polyHIPE nanocomposites with reinforced surface modified nanoclay. The presence of modifier groups on the nanoclay surface did not compromise emulsion stability. A total of 36 samples were produced to determine the relationship between emulsion preparation conditions and final polyHIPE properties, revealing the interactions of experimental parameters and deriving empirical model equations for each property.
POLYMER COMPOSITES
(2021)
Article
Polymer Science
Kaitlin Wang, Russell J. Composto, Karen I. Winey
Summary: We use ToF-SIMS and cross-sectioned trilayer samples to measure nanoparticle and polymer diffusion in polymer melts. The data is corrected for sample tilt, deconvoluted for beam resolution, and integrated to extract concentration profiles and diffusion coefficients. These results are in agreement with previous studies using ion beam methods. This work validates ToF-SIMS as a reliable tool for measuring diffusion and enables investigation of more complex polymer systems and longer time and length scales.
Article
Engineering, Chemical
N. Nassar, L. A. Utracki, M. R. Kamal
Summary: This study investigated the effect of flow field on the intercalation of polymer/clay nanocomposites using atactic polystyrene. The results showed that the combination of elongational and shear flow provided better mechanical properties and gallery spacing.
INTERNATIONAL POLYMER PROCESSING
(2022)
Article
Chemistry, Physical
Abbas Ghanbari, Marie-Claude Heuzey, Pierre J. Carreau
Summary: A major challenge in the industrialization of polymer-clay nanocomposites at high processing temperatures is the thermal degradation of the matrix induced by the commercial organoclays. This work investigated the use of a styrene-acrylic multi-functional oligomeric chain extender to address the thermal degradation of PET nanocomposites and improve their microstructure. The introduction of the chain extender significantly improved the morphology of the nanocomposites containing Nanomer particles and enhanced their resistance to degradation.
APPLIED CLAY SCIENCE
(2022)
Article
Materials Science, Composites
Yunxia Li, Yiming Song, Dongchun Yang, Sheng Tian, Qin Deng, Xuegang Chen, Zhaobo Wang, Xin Wang, Haiqing Hu, Yilong Wang, Yong Tao, Jian Zhao
Summary: A novel method for covalent functionalization of MoS2 to yield dodecylated MoS2 was developed, leading to the enhanced mechanical characteristics and glass transition temperature of the resulting MoS2/PS composites.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Mohammad Razavi-Nouri, Alireza Sabet, Maryam Mohebbi
Summary: This study investigated the properties of OMMT filled EVA/NBR nanocomposites, finding that an increase in gel content can enhance the elastic modulus and yield stress, while decreasing the strain-at-break. Moreover, the tensile strength and modulus exponentially increased with strain, but the energy-at-break decreased with gel content. Additionally, changes in relaxation time and crystalline peak intensity ratio were observed with increasing gel content in the materials' structure and rheological behavior.
IRANIAN POLYMER JOURNAL
(2021)
Article
Materials Science, Composites
Juliana C. Lima, Anna Raffaela M. Costa, Jokderlea C. Sousa, Salim A. Arruda, Yeda M. B. Almeida
Summary: PET/clay nanocomposites have been widely studied, but in this work PET homopolymer and two PET copolymers were prepared as matrices with a commercial organoclay. The thermal behavior of these materials was investigated, showing that the presence of clay decreased the glass transition temperature and thermal stability while not affecting the degree of crystallinity. The modified Avrami model was used for non-isothermal crystallization kinetics, proving to be a good choice for simulations under processing conditions.
POLYMER COMPOSITES
(2021)
Article
Energy & Fuels
Thomas De Muijlder, Michel Voue, Philippe Leclere
Summary: Silver nanoparticles were synthesized via laser ablation in two different organic solvents, and their dispersion and behavior in a polystyrene matrix were investigated. The presence of a core-shell structure in toluene-ablated particles affected the optical properties of the silver nanoparticles. The particles showed good dispersion in the matrix, especially when synthesized in toluene. The interphase behavior of the doped polymer films was influenced by the synthesis process, affecting their mechanical and optical properties. The findings contribute to the understanding of silver/polystyrene nanocomposites and have potential for developing functional materials.
Article
Materials Science, Composites
Jiyong Luo, Qin Tian, Shuhao Qin, Yating Qi, Jiali Li, Daohai Zhang
Summary: Nanocomposites composed of polypropylene, organoclay, ethylene acrylic acid, and maleic anhydride-grafted polypropylene were prepared and their thermal stability properties were investigated. The addition of organoclay improved the thermal stability and mechanical properties of the nanocomposites.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2022)
