Article
Polymer Science
Madara Ziganova, Remo Merijs-Meri, Janis Zicans, Tatjana Ivanova, Ivan Bochkov, Martins Kalnins, Andrzej K. Bledzki, Paulius P. Danilovas
Summary: This study focuses on spelt husk and nanoclay-modified polypropylene composites for injection-moulding applications. The addition of nanoclay fillers has insignificant influence on the viscosity of the composites, but it improves the tensile and flexural modules and thermal stability. Natural materials like agricultural residues and clay minerals show potential in enhancing the stiffness and thermal properties of polypropylene composites.
Article
Green & Sustainable Science & Technology
Byeong-Joo Kim, Biplab K. Deka, Chanwoo Joung, Young-Bin Park
Summary: Polypropylene nanocomposite films reinforced with surface-modified nanoclay, maleic anhydride-grafted PP, and surfactants were fabricated by extrusion, and their mechanical properties were significantly affected by the presence of nanoclay and plasma treatment. The multi-scale hybrid composites consisting of carbon fiber and nanocomposite films showed improved mechanical properties when treated with plasma and reinforced with specific materials.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2021)
Article
Polymer Science
Francisco Burgada, Eduardo Fages, Luis Quiles-Carrillo, Diego Lascano, Juan Ivorra-Martinez, Marina P. Arrieta, Octavio Fenollar
Summary: This study manufactured green composites from recycled polypropylene and short hemp fibers reinforced with two types of compatibilizing agents. The addition of PP-g-MA improved the fiber-matrix interaction, while incorporating MLO had a plasticizing effect on the composites.
Article
Chemistry, Multidisciplinary
Sapokazi Timakwe, Bongiwe Silwana, Mangaka C. Matoetoe
Summary: This study investigated the functionalisation of three fractions of nanoclay (nanomer 1.44P) with silver (Ag), resulting in the formation of silver nanoclay composites (Ag/nanomer 1.44P). The optical and electrochemical properties of the functionalised nanoclay were examined, and various characterisation techniques, including optical, morphology, and electrochemical methods, were employed. The presence of functional groups in the FTIR spectrum of Ag/nanomer 1.44P, compared to silver and pure nanomer 1.44P, indicated a successful reaction and functionalisation of nanomer 1.44P with silver. XRD data showed diffraction peaks within the silver spectrum range, with decreasing intensity as the concentration of nanomer 1.44P increased. SEM images revealed well-dispersed particles of different shapes, with average sizes ranging from 2.5 nm to 27.5 nm, depending on the concentration of nanomer 1.44P. The decrease in diffusion coefficient values and electron transfer rates with increasing nanomer 1.44P concentration indicated changes in nanocomposite sizes.
Article
Polymer Science
Mounia Triaki, Abdelbaki Benmounah, Athmen Zenati
Summary: The study evaluated the influence of nanoclay on the final properties of polypropylene-based nanocomposites. Results showed that the incorporation of a small amount of nanoclay had a significant effect on the final properties of the nanocomposites.
Article
Materials Science, Characterization & Testing
B. Elamvazhudi, S. Gopalakannan
Summary: Polymer composites are widely used in lightweight construction due to their high strength-to-weight ratio and low cost. However, exposure to adverse environmental conditions can degrade their mechanical properties. This study investigates the long-term performance of nanoclay/titanium dioxide-modified carbon/glass-reinforced hybrid composites in a seawater environment. The addition of nanofillers and carbon/glass hybridization significantly affects water barrier properties and mechanical property decay.
JOURNAL OF TESTING AND EVALUATION
(2023)
Article
Polymer Science
Robert Vardai, Thomas Lummerstorfer, Claudia Pretschuh, Michael Jerabek, Markus Gahleitner, Andras Bartos, Janos Moczo, Juliana Anggono, Bela Pukanszky
Summary: PP hybrid composites prepared by combining natural reinforcements and PET fibers exhibit good overall performance, with different types of natural fibers working together with PET fibers to improve impact resistance, increased strength through enhanced interfacial adhesion from coupling agents, and controlled amounts of PET fibers improving tensile and impact properties.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Engineering, Multidisciplinary
Dylan Jubinville, Elnaz Esmizadeh, Costas Tzoganakis, Tizazu Mekonnen
Summary: This study demonstrates that by reprocessing polypropylene multiple times, it can be used as a matrix for wood plastic composites, producing composites with desirable physical properties. This shows the potential importance of recycling PP to reduce waste accumulation through the production of WPCs for construction and other applications.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Forestry
Jariyaporn Rakkaew, Narongrit Sombatsompop, Teerasak Markpin, Ekachai Wimolmala, Kiadtisak Saenboonruang
Summary: This study focused on enhancing the gamma shielding properties of WPVC composites by incorporating bismuth-embedded wood particles, and found that BiCl3 loading increased density and hardness while decreasing impact strength and water absorption.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2022)
Article
Polymer Science
Robert Vardai, Thomas Lummerstorfer, Claudia Pretschuh, Michael Jerabek, Markus Gahleitner, Gabor Faludi, Janos Moczo, Bela Pukanszky
Summary: Polypropylene hybrid composites were prepared using a combination of traditional reinforcements and PET fibers, with improved interfacial adhesion through the use of maleated PP. Impact strength was enhanced by the presence of stiff fibers, particularly PET, with up to 15 kJ m(-2) achievable. Local deformation processes initiated by polymeric fibers contribute to the overall impact resistance, with debonding and pullout of PET fibers facilitating plastic deformation of the matrix polymer. Different reinforcement types and interfacial adhesion influence overall composite properties.
POLYMER INTERNATIONAL
(2021)
Article
Engineering, Multidisciplinary
Wenjun Fang, Xujing Yang, Xinxin Xu, Weiwei Li, Qing Li
Summary: The study reveals the influence mechanism of cooling rates on the mechanical properties of CGF/PPR composites, showing that the tensile strength and impact resistance vary with cooling rates, with the presence of boundary defects and lamellae thickness playing important roles in the overall performance.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
R. Vardai, M. Ferdinand, T. Lummerstorfer, C. Pretschuh, M. Jerabek, M. Gahleitner, G. Faludi, J. Moczo, B. Pukanszky
Summary: The study demonstrates that the use of synthetic fibers for impact modification can successfully improve the performance of polypropylene hybrid composites, allowing for high stiffness and impact resistance properties suitable for structural applications.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2022)
Article
Forestry
Lu Zhang, Jinpeng Sun, Ruyan Li, Pan Chen, Ziqiang Shao, Wenjun Wang
Summary: A new method was used to prepare nanocellulose and incorporate it into wood-plastic composites (WPCs), resulting in improved strength and thermal properties, especially impact strength. Proper treatment and incorporation of NC can effectively enhance the performance of WPCs.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2021)
Article
Materials Science, Composites
Arulmurugan Seetharaman, Venkateshwaran Narayanan
Summary: This research investigates the effect of adding aluminosilicate (bentonite) nanoclay powder on the mechanical and dynamic mechanical behavior of polyester composites. The results show that the addition of nanoclay can enhance the mechanical properties of the composites, and 5 wt% bentonite clay addition provides the best strength and storage modulus.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Dylan Jubinville, Costas Tzoganakis, Tizazu H. Mekonnen
Summary: This study investigates the effects of reprocessing and maleation on the properties of wood plastic composites (WPCs) made from polypropylene (PP) and maleic anhydride grafted polypropylene (MAPP). The results show that repeated reprocessing allows for the incorporation of high amounts of wood filler, while maleation improves the composite's strength and interactions with the filler. The study suggests that maleation of reprocessed PP could be an important strategy for reducing the use of virgin and petroleum-based MAPP in WPC production.
ACS APPLIED POLYMER MATERIALS
(2022)
