Article
Materials Science, Composites
Lorena Saitta, Vishnu Prasad, Claudio Tosto, Neal Murphy, Alojz Ivankovic, Gianluca Cicala, Gennaro Scarselli
Summary: The study focuses on composite fabrication, characterization, and recyclability of biobased polymer resins reinforced with flax fiber. By selecting different biobased resins and evaluating their mechanical properties, an epoxy resin cured with a cleavable hardener is found to have the highest glass transition temperature, ensuring full recyclability. The study also demonstrates the possibility of separating and recovering fibers and resin from composite panels through a specific chemical process.
POLYMER COMPOSITES
(2022)
Article
Construction & Building Technology
M. I. Romero-Gomez, R. V. Silva, I. Flores-Colen, J. de Brito
Summary: This study characterizes the residual physico-mechanical performance of gypsums with polypropylene and nylon plastic waste after exposure to high temperatures. Measurements of bulk density, ultrasonic pulse velocity, young's modulus, mechanical strength, fire reaction performance, and toxicity assessment were conducted. The results show that the residual properties are influenced more by reactions in the gypsum matrix than by the plastic waste content, and the plastic-containing composites can be classified as A2 non-combustible material.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Multidisciplinary Sciences
Alexander Ahrens, Andreas Bonde, Hongwei Sun, Nina Kolln Wittig, Hans Christian D. Hammershoj, Gabriel Martins Ferreira Batista, Andreas Sommerfeldt, Simon Frolich, Henrik Birkedal, Troels Skrydstrup
Summary: Fibre-reinforced epoxy composites are widely used in load-bearing applications due to their light weight and high durability. However, the lack of viable recycling strategies for these composites has led to their disposal in landfills. This study presents a chemical recycling approach that allows for the recovery of polymer building blocks and intact fibres from epoxy composites.
Article
Polymer Science
Maciej Mrowka, Anna Wozniak, Seweryn Prezyna, Sebastian Slawski
Summary: The researchers in this study investigated the use of metallurgical production waste products as fillers in silicone composites to enhance mechanical properties. They found that silicone composite filled with 5 wt% zinc dust showed the best performance in reducing abrasive wear.
Article
Polymer Science
Dong-Jun Kwon, Kang Rae Cho, Hyoung-Seock Seo
Summary: By using waste carbon fiber and polypropylene (PP), durable recycled composites with good moldability and dimensional stability can be manufactured.
Article
Materials Science, Composites
Xin Zhang, Jiazi Wu, Zhishuai Geng, Zhaolu Qin, Ye-Tang Pan, Wenchao Zhang, Rongjie Yang
Summary: A bio-based vinyl ester resin monomer was prepared and used to overcome the flammability and smoke release issues of vinyl ester resin. The impact of a diluent on the properties of the resin and its fiberglass-reinforced composites was investigated. The results showed that the bio-based resin and its composites had higher glass transition temperatures and improved mechanical properties compared to the conventional resin. Additionally, the bio-based resin exhibited superior flame retardancy and smoke suppression due to its better wettability on fiberglass.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Changjun Gong, Xiaohan Huang, Shuaikang Lv, Jixian Li, Junkun Tang, Farong Huang
Summary: In this study, three novel poly(silylene arylacetylene)s containing the hexafluoroisopropylidene structure were synthesized and their effects on mechanical and dielectric properties were investigated. The resins exhibited good solubility, processability, high thermal stability, improved dielectric properties, and high mechanical strength. The resulting composites showed excellent mechanical properties and wave transparency.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Materials Science, Composites
Zuhal Yurtbasi, Mustafa Kuyumcu, Gokce Kurt, Alper Kasgoz
Summary: In this study, aluminum dross powders were incorporated into polyoxymethylene to develop value-added products and create an alternative utilization method for industrial waste. The morphological analyses showed various inorganic components in the aluminum dross and no significant structural incompatibility with polyoxymethylene. The addition of aluminum dross improved the mechanical properties and crystallization behavior of the composite samples.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
George-Mihail Teodorescu, Zina Vuluga, Florin Oancea, Andreea Ionita, Jenica Paceagiu, Marius Ghiurea, Cristian-Andi Nicolae, Augusta Raluca Gabor, Valentin Raditoiu
Summary: There is a growing interest in recovering and recycling waste materials, particularly disposable medical face masks and fly ash, due to their hazardous nature to the environment and human health. This study focuses on investigating the properties of composites made from recycled polypropylene from face masks and silico-aluminous ash. The results show that the addition of a small amount of ash can improve the thermal stability and stiffness of the polypropylene matrix.
Article
Chemistry, Physical
Jun Cong Ge, Eun Seo Lee, Deuk Ju Kim, Ji Ho Kang, Ik Tae Im, Nag Jung Choi
Summary: The research analyzed the properties of polypropylene (PP)/fly ash (FA)/waste stone powder (WSP) composite materials. The results showed that all the composite materials can be prepared using the injection molding process without cracks or fractures. The addition of FA and WSP improved the bending strength and notched impact energy of the materials. The PP/FA/WSP composite materials have potential applications in the composite plastic industry and other industries in the future.
Article
Polymer Science
Siyang Wu, Mingzhuo Guo, Jiale Zhao, Qian Wu, Jian Zhuang, Xinming Jiang
Summary: Natural lignocellulosic fiber extracted from cow dung waste was evaluated as a potential reinforcing material in resin-based polymer composites. The addition of cow dung fibers improved the mechanical properties, reduced density, and increased water absorption of the composites. SEM analysis showed good interfacial bonding between cow dung fibers and the composite matrix.
Review
Metallurgy & Metallurgical Engineering
Fatih Aydin
Summary: The demand for light and high specific strength materials in automotive and aerospace industries is increasing. Magnesium-based materials are attractive due to their high specific strength, vibration damping ability, and recyclability. However, the low strength and wear resistance of magnesium limit its industrial use. Researchers are developing magnesium matrix composites using various reinforcements and exploring the use of cheaper and environmentally friendly options. This review focuses on magnesium matrix composites reinforced with solid waste particles and discusses the changes in wear, mechanical, corrosion, and thermal properties.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Applied
Shan Huang, Zhengping Fang, Di Chen, Zhenkun Yu, Zhengguang Sun, Yuhong Zhang
Summary: A flexible superhydrophobic modified PVDF/epoxy resins composite coating with strong water repellency, mechanical and chemical robustness has been developed. The coating can withstand UV light exposure and exposure to high corrosive mediums while maintaining superhydrophobic property, showing adaptability on different substrates. The mechanical flexibility of the coating also ensures high speed drip resistance in anti-moisture stabilities.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Construction & Building Technology
Fangmu Chen, Jinxia Zhao, Baifa Zhang, Yuan Feng, Canguang Chen, Zhongyu Lu, Jian Yang, Jianhe Xie
Summary: Ultra-lightweight high-strength geopolymeric composites (ULHSGCs) were developed with the characteristics of being lightweight, high strength, and low carbon content. The study focused on examining the physical, mechanical, and microstructural properties of the ULHSGCs. The results showed that the ULHSGCs had good mechanical properties and fluidity.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Multidisciplinary Sciences
Abdu Mohammed, D. K. Nageswara Rao
Summary: The research focuses on the sustainability of the environment by utilizing waste materials to produce eco-friendly composite materials. The composite made from flax fiber reinforced with expanded polystyrene wastes is low-cost, lightweight, and can help reduce environmental pollution. The study shows that the composite with 30% fiber content has the highest tensile, bending, and impact strengths, making it suitable for applications in automobile interior panels and housing panels.
Article
Multidisciplinary Sciences
Gulnare Ahmetli, Zafer Yazicigil, Ulku Soydal
PROCEEDINGS OF THE ESTONIAN ACADEMY OF SCIENCES
(2015)
Article
Polymer Science
Imran Oral, Ulku Soydal, Mourad Bentahar
Article
Materials Science, Composites
Ulku Soydal, Mustafa Esen Marti, Suheyla Kocaman, Gulnare Ahmetli
POLYMER COMPOSITES
(2018)
Article
Materials Science, Composites
Ulku Soydal, Gulnare Ahmetli
POLYMER COMPOSITES
(2018)
Article
Polymer Science
Alaaddin Cerit, Mustafa Esen Marti, Ulku Soydal, Suheyla Kocaman, Gulnare Ahmetli
INTERNATIONAL JOURNAL OF POLYMER SCIENCE
(2016)
Article
Materials Science, Composites
Ulku Soydal, Suheyla Kocaman, Mustafa Esen Marti, Gulnare Ahmetli
POLYMER COMPOSITES
(2018)
Article
Polymer Science
S. Kocaman, A. Cerit, U. Soydal, M. E. Marti, G. Ahmetli
INTERNATIONAL JOURNAL OF POLYMER SCIENCE
(2019)
Article
Materials Science, Paper & Wood
Suheyla Kocaman, Ulku Soydal, Gulnare Ahmetli
Summary: Phenolic novolac-type epoxy resin composites were prepared by reinforcing with cotton waste, aluminum hydroxide, and boric acid particles, with the triple hybrid additive (CtW:BA:AH) at a ratio of 20:5:10 wt% exhibiting the best mechanical and combustion properties.
Article
Polymer Science
Kianoosh Zamani, Suheyla Kocaman, Murat Isik, Ulku Soydal, Nimet Ozmeral, Gulnare Ahmetli
Summary: In this study, walnut shell, hazelnut shell, and mussel shell waste were used as inexpensive reinforcements for epoxy composite materials. The inclusion of mussel shell and chars significantly improved the thermal strength of the epoxy matrix. The composites prepared with bisphenol-A type epoxy resin showed high contact angle values and good flammability stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Ulku Soydal
Summary: In this study, two types of biobased epoxy composites were prepared using alkali-treated cotton waste and nanoclay as reinforcements. The composites were characterized and their properties were evaluated. The results showed that both alkali-treated cotton waste and nanoclay could enhance the mechanical properties and thermal stability of the composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Nimet Ozmeral, Suheyla Kocaman, Ulku Soydal, Gulnare Ahmetli
Summary: In this study, a phenolic novolac-type epoxy (EPN) resin was modified with 4 wt% thermoplastic polystyrene (PS) waste and used as the polymer matrix, resulting in the first-time use of this combination. Two types of composites were prepared: nanocomposites with 1-3 wt% nanoclay (NC) and hybrid composites. The corrosion protection properties of the coatings were tested using immersion tests in NaOH, HCl, and NaCl solutions, and the water sorption and weight gain percentage were measured.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Nimet Ozmeral, Ulku Soydal, Suheyla Kocaman, Gulnare Ahmetli
Summary: In this study, two types of epoxy resins, bisphenol A-type epoxy (ER) and epoxy phenol novolac resins (EPN), were chosen with two different amine-type curing agents. The mechanical properties and density of EPN resin were higher when using both curing agents. EPN was modified with polystyrene (EPN-PS) and used as a matrix with an IPOX hardener. Nano- and hybrid composites were prepared with pristine and modified montmorillonite and red mud waste. The appropriate ratios of PS and NC were 4% and 2%, respectively. The curing degrees of ER, EPN, and EPN-PS were 99.3%, 99.9%, and 86.5%, respectively. The appropriate ratio of RMW was 30 wt%. Hybrid composites with 25-30 wt% RMW can be considered self-extinguishing materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Proceedings Paper
Physics, Applied
Imran Oral, Ulku Soydal
TIMES OF POLYMERS (TOP) AND COMPOSITES 2014
(2014)
Proceedings Paper
Physics, Applied
Ulku Soydal, Gulnare Ahmetli, Suheyla Kocaman
TIMES OF POLYMERS (TOP) AND COMPOSITES 2014
(2014)
