Review
Chemistry, Multidisciplinary
Suxi Wang, Joseph Kinyanjui Muiruri, Xiang Yun Debbie Soo, Songlin Liu, Warintorn Thitsartarn, Beng Hoon Tan, Ady Suwardi, Zibiao Li, Qiang Zhu, Xian Jun Loh
Summary: Polypropylene (PP) is widely used due to its low cost and exceptional characteristics. With the increasing awareness of energy and environmental crisis, there is a growing demand for sustainable and eco-friendly alternatives to traditional plastics. This review paper provides an overview of bio-based PP, its production routes, market analysis, and potential applications. It also discusses PP-based biocomposites produced with green fillers from agro-industrial wastes, degradation of PP, and future perspectives.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Multidisciplinary Sciences
Adeolu A. Adediran, Abayomi A. Akinwande, Oluwatosin A. Balogun, Oladele S. Bello, Miracle K. Akinbowale, Olanrewaju S. Adesina, Ayotunde A. Ojo
Summary: This study developed a polymeric matrix with a high strength to cost ratio by hybridizing polypropylene with low-cost particulate snail shell and kenaf fiber. The results showed that adding 5 to 30 wt% kenaf fiber and 2, 4, and 10 wt% snail shell improved hardness values. The addition of 4 wt% snail shell with 5 and 10 wt% kenaf fiber resulted in increased impact, compressive, and flexural strengths. However, higher amounts of kenaf fiber led to a slight reduction in strength values. The optimum mix for the hybrid bio-PP composite was found to be 4 wt% snail shell and 10 wt% kenaf fiber.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Ankurita Nath, Subhadeep Biswas, Anjali Pal
Summary: In this study, eggshell powder (ESP) was used as a selective heterogeneous catalyst for the oxidative degradation of crystal violet (CV) dye in aqueous media. ESP acted as a carbonate (CO32) source, facilitating the formation of carbonate anion radicals (CO3 (center dot-)) in the presence of H2O2. The combination of these radicals and center dot OH radicals led to the selective degradation of CV dye. The use of ESP as a catalyst offers a promising route for CV degradation and the utilization of eggshell waste.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Polymer Science
Eija-Katriina Uusi-Tarkka, Mikael Skrifvars, Pooria Khalili, Henrik Herajarvi, Nawar Kadi, Antti Haapala
Summary: This study explores the use of wood-fiber-based fabrics containing Lyocell yarn and Spinnova-Lyocell yarn to form unidirectional all-cellulose composites (ACC) through dilution in a NaOH-urea solution. The tensile properties and thermal stability of the ACC were compared to thermoplastic biocomposites prepared with biobased polypropylene (PP). The ACC showed higher tensile strength in the warp direction and doubled elongation at break compared to other samples, while also exhibiting higher thermal stability. Furthermore, the ACC demonstrated significantly higher water absorption compared to the PP biocomposites. These findings highlight the unique properties of ACC and suggest potential commercial applications.
Article
Polymer Science
Ju-Heon Lee, Dong Hwi Kim, Youngjae Ryu, Kwan Hoon Kim, Seong Ho Jeong, Tae Yang Kim, Sung Woon Cha
Summary: The study developed a biocomposite PP/SOC using sesame oil cakes as reinforcement in the matrix, which resulted in increased flexural modulus but decreased tensile strength. SEM observation confirmed that phase separation and voids were the causes of the decreased tensile strength.
Review
Polymer Science
Xiangrui Li, Lingyu Meng, Yinliang Zhang, Zexiu Qin, Lipeng Meng, Chunfeng Li, Mingli Liu
Summary: This paper discusses the synthesis, properties, degradation, modification, and post-modification applications of polypropylene carbonate (PPC), a biodegradable polymer with carbon sequestration function. The disadvantages of PPC, such as poor mechanical and thermal properties, are also addressed. Environmentally friendly materials can be used to modify PPC and enhance its performance. The influences of inorganic materials, natural polymer materials, and degradable polymers on PPC properties are presented. This research provides valuable reference for the early promotion of PPC.
Article
Materials Science, Textiles
A. A. Younis, A. A. El-Wakil
Summary: This study aimed to enhance the mechanical and flame retardant properties of polypropylene by using recycled waste polypropylene and waste chicken eggshell as fillers. The addition of magnesium hydroxide and monoammonium phosphate significantly improved the tensile and flexural strength of the composites. Overall, the organic matter in waste chicken eggshell acted as a natural antioxidant for the composites.
FIBERS AND POLYMERS
(2021)
Article
Agricultural Engineering
Helene de Baynast, Amelie Tribot, Benjamin Niez, Fabrice Audonnet, Eric Badel, Guy Cesar, Claude-Gilles Dussap, Emmanuelle Gastaldi, Laurent Massacrier, Philippe Michaud, Cedric Delattre
Summary: The study focuses on utilizing lignin and corn cob resources to produce biocomposites, with one particular mixture showing the highest mechanical performance. The addition of lignin contributes to improved hydrophobicity of the composite materials, enhancing their overall properties.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Materials Science, Textiles
Wenqian Zhai, Peng Wang, Damien Soulat, Xavier Legrand
Summary: This article investigates the mechanical properties of flax/polypropylene-based multi-core micro-braided hybrid yarns and evaluates their comprehensive textile indicators and influencing factors through tensile testing and cover factor parameters.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Crystallography
Mariana Ichim, Lucia Stelea, Ioan Filip, Gabriela Lisa, Emil Ioan Muresan
Summary: This study aimed to produce and characterize biocomposites made of coir fibers as reinforcing material and polypropylene as matrix through thermoforming, analyzing their physical-mechanical properties, thermal stability, and structural changes. Results showed that as the content of coir fibers increased, the strength of the biocomposites decreased, accompanied by a decrease in melting temperature and an increase in thermal stability. The modifications in the structure of the biocomposites were highlighted through ATR-FTIR and SEM analysis by altering the ratio of coir fibers to matrix.
Article
Forestry
Shinji Ochi
Summary: This paper investigates the mechanical properties of bamboo fiber bundle-reinforced bamboo powder composite materials. The water content of the bamboo powder and the molding temperature were studied to determine their effects on the strength characteristics. The results show that a molding temperature of 180 degrees C is the most suitable for fiber bundle reinforcement, with the highest tensile and flexural strengths achieved at a fiber bundle content of 70%.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2022)
Article
Agricultural Engineering
J. Andrzejewski, M. Barczewski, D. Czarnecka-Komorowska, T. Rydzkowski, K. Gawdzinska, V. K. Thakur
Summary: This study developed sustainable polymeric materials with a polypropylene matrix reinforced with wood waste for structural applications. The new polymer biocomposites were evaluated for their mechanical and structural properties, showing a relationship between the susceptibility to multiple processing and changes in flow conditions and mechanical properties. The study aims to describe the relationship between these processes and the properties and structure of the new materials.
INDUSTRIAL CROPS AND PRODUCTS
(2024)
Article
Green & Sustainable Science & Technology
David O. Kazmer, Davide Masato, Leonardo Piccolo, Kyle Puleo, Joshua Krantz, Varun Venoor, Austin Colon, Justin Limkaichong, Neil Dewar, Denis Babin, Cheryl Sayer
Summary: The study compared four sustainable materials processed using a hot runner mold, finding minimal variation in mechanical properties. Reductions in mechanical properties were correlated with thermal degradation, which could be minimized by lowering melt temperature and cycle time, leading to a reduced environmental impact of injection molding processes.
Article
Materials Science, Composites
Thanh Mai Nguyen Tran, M. N. Prabhakar, Dong Woo Lee, Maurelio Cabo, Jung-Il Song
Summary: This research focuses on fabricating flame-retardant green composites by using eggshell powder as an additive, optimizing the reinforcement of abaca fibers in the composites, and examining the thermal and flame-retardant properties of the composites with different percentages of eggshell powder.
POLYMER COMPOSITES
(2021)
Article
Engineering, Environmental
Magdalena Wegrzyn, Ewa Rudnik, Renata Kamocka-Bronisz, Bozena Kukfisz
Summary: The study focused on the modification of polyethylene-based biocomposites from renewable resources with phosphonium ionic liquids and analyzed their mechanical properties and thermal behavior. It was found that the presence of ionic liquids had a significant impact on the tensile properties and thermal stability of the biocomposites. Additionally, the type of anion in the ionic liquid influenced the thermal behavior of the modified biocomposites.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
