Article
Materials Science, Composites
Sreekumar P. Appu, Omar Ashwaq, Mamdouh Al-Harthi, Yunusa Umar
Summary: The study found that the addition of date palm seed powder reduces the crystallinity of recycled linear low-density polyethylene, while not affecting its melting and crystallization temperature. With the increase in filler loading, thermal stability decreases leading to a decrease in mechanical properties.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2021)
Article
Materials Science, Ceramics
Fan Qiu, Zhanyong Wang, Min Liu, Zemin Wang, Song Ding
Summary: MXene/NiFe2O4 nanocomposites were successfully prepared via one-step hydrothermal method, showing improved magnetic and electromagnetic properties with the introduction of MXene. The microwave absorption performance was enhanced with the addition of MXene nanosheets.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Chao Lu, Ruihua Zhang, Mengzhi Xiao, Xiaohong Wei, Yan Yin, Yuebo Qu, Hui Li, Pengyu Liu, Xiaopan Qiu, Tieming Guo
Summary: The primary constraints hindering the widespread adoption of laser powder bed fusion (LPBF) include expensive raw materials, internal defects, difficulty in controlling the quality and stability, and lack of consistency in the powder feedstock. This study investigated the evolution mechanism of 316L powders after multiple recycling in the LPBF process and revealed significant effects on physical properties, phase transformation, mechanical properties, and magnetic properties. Additionally, oddly shaped spatters were found in the recycled powders and their formation mechanism was elaborated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Green & Sustainable Science & Technology
Eider Mendiburu-Valor, Tamara Calvo-Correas, Loli Martin, Isabel Harismendy, Cristina Pena-Rodriguez, Arantxa Eceiza
Summary: This paper focuses on the synthesis of sustainable thermoplastic polyurethanes (TPU) using a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer obtained from marine polyethylene terephthalate (PET) litter and a renewable castor oil-derived macrodiol. The TPUs were synthesized in bulk without catalysts, with different BHET contents as chain extenders. Extensive characterization of the BHET monomer and TPUs was conducted. The TPUs synthesized in this work, consisting of at least three quarters of biobased and recycled components, exhibited favorable thermal, thermomechanical, and mechanical properties.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Multidisciplinary
Zhengxiong Chen, Xinyu Wang, Jing Luo, Bowen Zhang, Fei Shen, Binbin Li, Jing Yang
Summary: In this study, rod-like hydroxyapatite modified with two different amino acids was synthesized, showing that amino acids can reduce the aspect ratio and crystallinity of hydroxyapatite, while exhibiting better biocompatibility and inhibitory effects on osteosarcoma cells.
Article
Engineering, Chemical
Malek Ali, Anwar H. Al-Assaf, Mohammad Salah
Summary: In this study, Recycled Polymer (RP) composites were synthesized using compression molding process. Date Palm Fibers (DPF) were used as reinforcement materials with different lengths and weight ratios. The results showed that the hardness and impact of the composites increased with the increase of DPF weight ratio and length. The specimens with 10mm length and 20wt% weight ratio exhibited the highest creep resistance and tensile strength. The specimens with 2.5mm length and 5% weight ratio had the maximum strain due to the ductility of the plastic matrix.
ADVANCES IN POLYMER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
De-cheng Kong, Chao-fang Dong, Xiao-qing Ni, Liang Zhang, Rui-xue Li, Xing He, Cheng Man, Xiao-gang Li
Summary: This study investigated the impact of using recycled powders in the fabrication of a nickel-based superalloy. The recycled powders showed re-melted powder surfaces, satellite particles, and a high-oxygen-content surface layer, leading to an increased density of printing-induced cracks, mainly formed along grain boundaries and cellular boundaries.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Materials Science, Composites
Laszlo Lendvai, Ferenc Ronkay, Guangming Wang, Sicong Zhang, Shaofeng Guo, Vishal Ahlawat, Tej Singh
Summary: This study presents the processing and characterization of waste marble powder-reinforced recycled polyethylene terephthalate (rPET) composites. The results show that the incorporation of marble dust improves the mechanical properties of rPET, but excessive content leads to a decrease in strength.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Physical
Saba Jamil, Zunaira Ahmad, Muhammad Ali, Shanza Rauf Khan, Sarmed Ali, Mohamed Amen Hammami, Muhammad Haroon, Tawfik A. Saleh, Muhammad Ramzan Saeed Ashraf Janjua
Summary: Polyaniline (PANI) and Polyaniline/Nickel oxide (PANI/NiO) composites were prepared using ammonium persulfate as an oxidant, and characterized by various techniques; The composites were used as diesel additives, showing high efficiency; Experimental data analysis indicated that PANI/NiO composites have better catalytic and fuel additive performance compared to PANI and NiO.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Coatings & Films
M. Winnicki, S. Kozerski, A. Malachowska, L. Pawlowski, M. Rutkowska-Gorczyca
Summary: The technology of nickel-alumina composite coatings obtained by low-pressure cold spray (LPCS) was described in this paper. The content of alumina reinforcement and the morphology of cladded powders were optimized by mixing different commercial and developed powders. The coatings' microhardness and bond strength varied for different mixtures of powders used in the spraying process.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Construction & Building Technology
Xin Deng, Jun Li, Zhongyuan Lu, Junjin Zhang, Kai Luo, Yunhui Niu, Jun Hu, Kewen He
Summary: Recycled aggregate (RA) is widely used in China for construction and demolition waste treatment. However, the production of finer powders during the RA preparation process reduces the quality of RA. Separating and individually using different sizes of recycled concrete powders can improve the performance of RAs and their potential applications.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Shujun Li, Jianming Gao, Qiuyi Li, Xiaolong Zhao
Summary: The study investigates the properties of recycled concrete powder (RCP) and recycled brick powder (RBP) and their impact on mortar properties. It was found that RBP has a lower negative impact on mortar workability compared to RCP due to its lower specific surface area and porosity, and contributes significantly to flexural strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Agricultural Engineering
Diogo Antonio Correa Gomes, Eduardo Helio da Novais Miranda, Maria Cecillia Ramos de Araujo Veloso, Marcela Gomes da Silva, Gracialda Costa Ferreira, Lourival Marin Mendes, Jose Benedito Guimaraes Junior
Summary: The study evaluated the effects of different contents of jupati particles on the properties of composite materials made with recycled LDPE as the matrix. The inclusion of jupati particles in the composites resulted in increased density and improved properties, except for the modulus of rupture. These results were attributed to the chemical characteristics of jupati particles and their low interaction with the matrix.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Engineering, Environmental
Mohamadreza Y. Azarfam, Anuj Maheshwari, Frank D. Blum, Siddhesh Chaudhari, Clinton Switzer, Ranji Vaidyanathan, Jay C. Hanan, Sudheer Bandla
Summary: This study introduces a feasible method for manufacturing recycled composites using post-consumer carpets and recycled resin. The resulting composites have impressive strength and modulus, surpassing commercial thermoplastics and making them suitable for structural applications. This research presents a promising approach to address carpet landfilling and reduce reliance on additives.
RESOURCES CONSERVATION AND RECYCLING
(2024)
Article
Energy & Fuels
Jiangmin Li, Zhengyang Chen, Jiajia Yu, Junfeng Zhang, Biao Chen, Lei Wu, Shengquan Zhou, Yanzhao Rao, Jing Cao
Summary: Through the microwave-induced in-situ generation of lead metal, a PbS/Pb@CB-3 (PSC3) composite material is achieved, which overcomes the disadvantage of the absence of pure lead in the recycled lead oxide powder and significantly improves the electrochemical activity of the lead electrode.
JOURNAL OF ENERGY STORAGE
(2022)
