Article
Polymer Science
Saul Sanchez-Valdes
Summary: The use of HDPE-g-DMAE as a compatibilizer in HDPE/rHDPE/nanoclay composites improves mechanical properties, enhances adhesion between recycled and virgin polymer phases in the blend, and increases interactions between the compatibilizer and hydroxyl groups on the clay surface as well as oxidized groups in the recycled polymer.
IRANIAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Antonella Patti, Gianluca Cicala, Stefano Acierno
Summary: The study found that adding wood flour as a filler to recycled polyethylene leads to increased viscosity and thermal degradation with increasing wood loading. However, the material still shows good thermal stability within a certain temperature range.
Article
Engineering, Environmental
Yung-Chuan Chiou, Ming-Yuan Shen, Chin-Lung Chiang, Yi-Luen Li, Wei-Min Lai
Summary: This study utilized maleic anhydride grafted polyolefin elastomers and methyl methacrylate-butadiene-styrene copolymer as impact modifiers to prepare wood-plastic composites (WPCs) from recycled materials. The research investigated the thermal and mechanical properties of WPCs with different polymer blend ratios, revealing that the toughening effect of POE-g-ma/WPC was slightly better than MBS/WPC.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Chemistry, Physical
Mohammad E. Golmakani, Tomasz Wiczenbach, Mohammad Malikan, Reza Aliakbari, Victor A. Eremeyev
Summary: The present research investigated the mechanical properties of wood flour reinforced polyethylene polymer composites with varying wood flour size, aspect ratios, and mold injection temperature. Results showed that reducing the wood flour size decreased the tensile strength and modulus, flexural strength and impact energy, while increasing the flexural modulus. Additionally, increasing the injection molding temperature decreased the tensile strength and modulus, impact energy, while increasing the flexural strength and modulus. Thus, optimizing the injection molding temperature can improve the mechanical properties of the composite.
Article
Forestry
Aujchariya Chotikhun, Jitralada Kittijaruwattana, Wa Ode Muliastuty Arsyad, Emilia-Adela Salca, Yusuf Sudo Hadi, Salim Hiziroglu
Summary: The properties of experimental wood plastic composite (WPC) panels made from rubberwood, waste PET, and silica were evaluated in this study. It was found that increasing PET content reduced water absorption while improving compressive strength and hardness. Higher silica content adversely influenced mechanical properties but enhanced water absorption.
Article
Materials Science, Composites
Ahmad M. Youssef, Mahmoud E. Abd El-Aziz, Ragab E. Abouzeid
Summary: This research investigates the effects of unmodified, soda treated, and oxidized bagasse fibers on the properties of recycled polyvinyl chloride composites. It finds that the uniform distribution of bagasse fibers in the polymer composites is a key factor affecting the mechanical properties. The oxidized bagasse fiber loaded composites demonstrate the best mechanical and biodegradation properties.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Composites
Tahereh Nejat, Reza Naghdi, Elham Nadali, Parastoo Asgharzadeh Avajeghi, Reza Jafari
Summary: This study evaluated the effects of organically modified nanoclay and alkali treatments on the bagasse fiber/recycled polypropylene nanocomposites. The treatments improved the interaction between the fiber and polymer, resulting in enhanced physical properties of the nanocomposites. The addition of nanoclay reduced water ingress and increased the thermal stability of the composites. Overall, the combination of nanoclay and alkali treatments significantly improved the properties of the composites and converted them into high-performance materials.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Polymer Science
Francesca Ferrari, Gloria Anna Carallo, Antonio Greco
Summary: This paper analyzes the issue of waste recycling of epoxy-based composites. The study proposes the use of epoxidized waste flour and a cleavable hardener to achieve closed-loop recycling of the composite. Non-toxic solvents and mild working conditions are employed to recover the matrix while preserving the properties of the carbon fibers.
Article
Materials Science, Multidisciplinary
Tong Wei, Xin Yang, Yuna Huo, Xue Jia, Weidong Shan, Weihong Wang
Summary: In this study, a flame retardant system was developed for wood plastic composite (WPC) by combining ammonium polyphosphate (APP) with lignin (L). The optimal ratio of L/APP was determined and the distribution of the flame retardant system in the WPC was analyzed. The concentrated distribution of the flame retardant system in the surface layer of the WPC showed improved flame retardant performance and maintained better mechanical properties.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Composites
Olcay Guney, Ibrahim Bilici, Deniz Dogan, Ayseguel Ulku Metin
Summary: This study aims to modify natural hemp fibers with the maleic anhydride/ionic liquid method, manufacture the composites, and compare the thermal and mechanical properties of natural hemp fiber and hemp cellulose. The results showed that the strength of composite materials obtained from cellulose fibers with maleic anhydride/liquid ionic modification improved by around 20% from 19.5 to 24.4 MPa. Scanning electron microscope analyses revealed that the pressure, temperature, and time were suitable for producing composite materials. This work demonstrates the potential of recycled polyethylene/hemp composites as a sustainable green material with simple fabrication procedure and useful mechanical and thermal properties.
POLYMER COMPOSITES
(2023)
Article
Polymer Science
Atta Ur Rehman Shah, Abdul Jalil, Atiya Sadiq, Meshal Alzaid, Muhammad Shoaib Naseem, Rakan Alanazi, Sultan Alanazi, Abdullatyf Obaid Alanzy, Ibrahim Hotan Alsohaimi, Rizwan Ahmed Malik
Summary: Given the increasing consumption of plastic products, it is crucial to prioritize plastic recycling in order to reduce plastic waste and environmental pollution. This research focuses on assessing the impact of adding rice husk and wood flour to recycled high-density polyethylene (rec-HDPE) on its mechanical properties, flammability, and thermal stability. The study found that incorporating rice husk and wood flour improved the mechanical strength and fire-retardant attributes of recycled HDPE.
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
Polymer Science
Parastoo Falaki, Mahmood Masoomi, Ahmad Asadinezhad
Summary: The study revealed that the viscosity and elasticity ratios of pure constituents play a crucial role in controlling elongational deformation and coalescence in MFCs. The developed microfibrillar morphology significantly influenced the viscoelastic properties of MFCs, leading to enhanced storage modulus and complex viscosity. Additionally, the extent of coalescence in composites was found to be significant when the viscosity ratio approached unity and the elasticity ratio was minimal.
Article
Polymer Science
Qinghua Yuan, Wei Yang, Zhuwen Ma, Zhenrui Huang, Lin Cao, Zhidan Lin, Peng Zhang
Summary: The present investigation explores the use of tobacco stalks flour and magnesium oxysulfate whiskers as fillers to enhance the properties of recycled polypropylene. The addition of tobacco stalks flour improves the mechanical properties of the composites, while the addition of magnesium oxysulfate whiskers enhances their tensile strength. Additionally, the presence of tobacco stalks flour increases the water absorption and antibacterial ability of the hybrid composites.
Article
Construction & Building Technology
Zhanqi Cheng, Kaichuang Wang, Jiajia Zhou, Haoliang Wu
Summary: This work investigated the mechanical properties of sustainable engineering cementitious (RFP-ECCs) with concrete and brick mixed powder (RMP) and recycled glass powder (RGP). It was found that the introduction of RGP improved the flowability of the fresh paste without PE fibre, while tiny effect on that of the fresh paste with PE fibre. A higher RGP substitution ratio resulted in a decrease in the hydration rate and the accumulated heat release of RFP-ECC. However, hydration rate and accumulated heat release of binders are not affected by the particle size of RGP. The compressive strength and flexural strength decreased with the increase of RGP substitution ratio.
JOURNAL OF BUILDING ENGINEERING
(2023)
