Article
Polymer Science
Yan Mi, Yumei Bai, Daqian Gao, Zhenhua Gao, Hao Gu, Weijun Yang
Summary: This study developed a controllable crosslinking system of soy protein-based adhesives by adjusting the soybean polysaccharide contents. The results showed that increasing the polysaccharide content can reduce the water-insoluble contents and improve the thermal stability of the adhesives. Additionally, polysaccharide can be used as an additive to reduce viscosity and improve spread property and mechanical interlock with plywood. The resultant plywood met the requirement of outdoor use with soaked wet bond strength of 1.58 MPa and cycled wet bond strength of 1.17 MPa at 40% polysaccharide content.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Jing Feng, Sujuan Li, Ruqun Peng, Tingli Sun, Xiaobao Xie, Qingshan Shi
Summary: The study found that different wood species had varying effects on fungal resistance of wood polypropylene composites, with Chinese fir and rubber wood-filled composites showing the highest and lowest durability against specific fungi. Fungal decay also led to significant differences in mechanical, chemical, and water absorption properties between non-decayed and decayed composites, resulting in lower strength and higher water absorption in decayed samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Haradhan Kolya, Eun-Suk Jang, Kazuharu Hashitsume, Chun-Won Kang
Summary: This article focuses on the rational design of sound absorption boards made of wood materials, specifically coconut wood cell walls. A simple and low-cost ammonium persulfate treatment was applied to enhance the sound absorption properties of the wood. The study found significant changes in the wood cell walls, resulting in improved sound absorption coefficients across different frequency ranges. These findings have implications for the development of wood-based sound absorption materials to regulate the acoustic environment in houses.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Heba Kandil, Ahmed M. Youssef, Doaa E. El Nashar
Summary: In the HRH bonding system of EPDM/MCC composites, replacing 50% of resorcinol with lignin resulted in composites with superior mechanical, thermo-aging, and swelling properties. Additionally, a significant enhancement in dielectric properties was observed with 100% replacement of resorcinol with lignin.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Noor Izyan Syazana Mohd Yusoff, Weng Hong Tham, Mat Uzir Wahit, Mohammed Rafiq Abdul Kadir, Tuck-Whye Wong
Summary: Biodegradable poly(sorbitol sebacate malate)/hydroxyapatite composites were synthesized through one-step polycondensation, and the addition of hydroxyapatite improved the mechanical properties of the materials. In vitro degradation and cytotoxicity tests showed good degradation performance and biocompatibility of the composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Engineering, Environmental
Orhan Kelleci, Deniz Aydemir, Ertugrul Altuntas, Rifat Kurt, Ahmet Oztel, Huseyin Yorur, Abdullah Istek
Summary: This study investigated the properties of PLA and PHB biopolymer composites reinforced with thermally treated wood flour and determined the formulations with optimum properties using multi-criteria decision-making methods. The addition of both thermally treated and untreated wood flour slightly increased the density and decreased the mechanical properties of the composites. However, it improved the thermal stability. The study concluded that the neat PLA sample had the best properties.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Review
Polymer Science
Veino Risto Shaumbwa, Dagang Liu, Bright Archer, Jinlei Li, Fan Su
Summary: Magnetic chitosan has garnered attention for its low cost, biodegradability, green sources, and magnetic intensity. It is used in wastewater treatment, medicine, pharmaceuticals, and electronics due to its potential applications and ease of modification and control with an external magnetic field.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Joemer Adorna, Ruby Lynn Ventura, Van Dien Dang, Ruey-An Doong, Jey-R S. Ventura
Summary: The study incorporated cheap fillers such as cellulose and calcium carbonate into PHB to reduce manufacturing costs while retaining properties; the self- and co-agglomeration of fillers impact the miscibility and performance of the material.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Polymer Science
Asanda Mtibe, Mpho Phillip Motloung, Jayita Bandyopadhyay, Suprakas Sinha Ray
Summary: In recent years, there has been a shift towards developing environmentally friendly polymers to reduce the impact of plastic leakage on ecosystems. Biopolymers have the potential to alleviate plastic pollution, but their utilization is influenced by various factors. This review discusses the potential and limitations of synthetic biopolymers and their composites in the context of environmentally friendly materials for a sustainable future.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Anan Sirichalarmkul, Supranee Kaewpirom
Summary: This study successfully developed a process for injection molding hexagonal plant-pots using PLA/PBS/RH green composites, demonstrating the significant role of rice husk in reducing costs, improving biodegradability, and enhancing processability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Alana G. de Souza, Rafaela R. Ferreira, Julio Harada, Derval S. Rosa
Summary: This study developed biodegradable PBAT/PLA composites with different fillers to enhance their physicochemical properties and biodegradability. The composites showed high tensile strength, good thermal performance and low water absorption, making them suitable as mulching films for lettuce crops. Biodegradation and ecotoxicity tests indicated that the developed films are environmentally friendly and beneficial for crop growth.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Luca Pettazzoni, Francesca Leonelli, Andrea Martinelli, Luisa Maria Migneco, Sara Alfano, Daniele Di Luca, Lorenzo Celio, Valerio Di Lisio
Summary: Vitrimers are innovative polymeric materials with the characteristics of thermosets at room temperature and plastics when heated. The use of bio-based polyamide-polyamine vitrimers prepared from renewable resources allows for reprocessability through transamidation exchange reaction, which can be catalyzed by boric acid. The incorporation of boric acid reduces the activation energy of the transamidation reaction and improves the thermal stability of the materials.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Giovanna Poggi, Alessandra Papacchini, Sara Baracani, Alice Cappitti, Gioia Marini, Matteo Marrini, Rodorico Giorgi, Antonella Salvini
Summary: The acid-catalyzed hydrolysis of glycosidic bonds is the primary degradation mechanism affecting cellulose-based materials, which can be reduced through neutralization of acidity. In addition to deacidification, a consolidation treatment is necessary for severely degraded artifacts. The use of saccharide derivatives as monomers improves the affinity and compatibility of the biopolymer with the artifacts to be treated.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Zongwei Guo, Zice Xu, Zhiqiang Dong, Mengjie Zhang, Zhiyuan Chi, Ming Li, Lei Shang, Yuhui Ao
Summary: This study introduces a novel hexa-epoxy functionalized bio-based epoxy resin (HPVIGEP) with a multi-arm star structure that significantly reduces viscosity and enhances thermo-mechanical properties. The application of this resin improves the mechanical properties of carbon fiber composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Review
Biochemistry & Molecular Biology
Galina F. Mironova, Vera V. Budaeva, Ekaterina A. Skiba, Yulia A. Gismatulina, Ekaterina I. Kashcheyeva, Gennady V. Sakovich
Summary: Miscanthus is a valuable renewable feedstock with significant potential for producing diverse biotechnology products. This review provides an overview of research on converting miscanthus polymers into bioethanol, biogas, bacterial cellulose, enzymes, lactic acid, lipids, fumaric acid, and polyhydroxyalkanoates. The aim is to assess the potential of using miscanthus polymers to develop sustainable technologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Adib Kalantar Mehrjerdi, Dan Akesson, Mikael Skrifvars
JOURNAL OF APPLIED POLYMER SCIENCE
(2020)
Review
Biochemistry & Molecular Biology
Behnaz Baghaei, Mikael Skrifvars
Article
Engineering, Environmental
Dan Akesson, Gauthaman Kuzhanthaivelu, Martin Bohlen
Summary: The study found that contaminating conventional plastics with biopolymers significantly affects their mechanical and thermal properties, with a reduction in elongation at break for HDPE and PP, and a loss of impact strength for PET even at 1% contamination.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Polymer Science
Dan Akesson, Sunil Kumar Lindstrom Ramamoorthy, Martin Bohlen, Ville-Viktor Skrifvars, Sofie Svensson, Mikael Skrifvars
Summary: The study showed that with increasing aging time, surface aging occurred in samples of high-density polyethylene, leading to a significant decrease in elongation at break. However, when high-density polyethylene was reinforced with nanotubes, the reduction in elongation at break was less dramatic.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Sunanda Sain, Leonidas Matsakas, Ulrika Rova, Paul Christakopoulos, Tommy Oman, Mikael Skrifvars
Summary: Formaldehyde-free bioresin adhesives were synthesized from lignin and tannin extracted from softwood bark, using glyoxal as a substitute for formaldehyde to modify the chemical structure. The glyoxal modification reaction was confirmed by ATR-FTIR spectroscopy, and the thermal properties were assessed by DSC and TGA. High temperature-cured bioresins showed higher thermal stability and degree of cross-linking, influenced by resin compositions and curing temperatures.
Article
Polymer Science
Pooria Khalili, Mikael Skrifvars, Ahmet Semih Erturk
Summary: The mechanical properties of regenerated cellulose fabric-reinforced composite were studied, showing higher tensile strength and ductility compared to natural fibre counterparts. Simulation was used to predict the behavior of the bio-composite, including modeling the structural behavior of a car door panel.
Review
Chemistry, Multidisciplinary
Eija-Katriina Uusi-Tarkka, Mikael Skrifvars, Antti Haapala
Summary: Climate change, waste disposal challenges, and emissions from non-renewable materials are driving the production of sustainable composites, such as All-cellulose composites (ACCs). ACCs are fully biodegradable, lightweight, recyclable, and have various beneficial properties, making them competitive in industries like food packing, medical, technical, and vehicles. Research on more specific applications, such as All-cellulose nanocomposites (ACNCs), is expanding the field of sustainable materials.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Composites
Behnaz Baghaei, Belinda Johansson, Mikael Skrifvars, Nawar Kadi
Summary: This study explores the recycling of discarded denim fabrics through the production of all-cellulose composites (ACCs) using an ionic liquid. Different manufacturing methods and fabric types were investigated for their impact on the mechanical properties of the formed ACCs. The results indicate that the manufacturing method has minimal influence on tensile properties, while the two-step method affects the modulus of elasticity. Additionally, impact properties are mainly influenced by the preparation method and fabric type.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Polymer Science
Eija-Katriina Uusi-Tarkka, Jaka Levanic, Henrik Herajarvi, Nawar Kadi, Mikael Skrifvars, Antti Haapala
Summary: In this study, sustainable all-cellulose composites (ACCs) were produced and the effects of dissolution time, hot press temperature, and the addition of TEMPO-oxidized nanocellulose on the properties of the composites were investigated. It was found that incorporating TEMPO-oxidized nanocellulose improved the mechanical properties and elongation at break of the ACCs.
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
Agricultural Engineering
Matilda Johansson, Mikael Skrifvars, Nawar Kadi, Hom Nath Dhakal
Summary: The aim of this research is to investigate if a low-cost by-product could be used as a component in a composite matrix material in the automotive industry to reduce the final weight and increase the non-petrochemical material usage of composite material without compromising the thermal and mechanical properties demanded. By chemically modifying lignin, the impact strength, thermal stability, and moisture repellence behavior of the composite material were improved significantly. The better interfacial compatibility between lignin and polylactic acid matrix was the key factor contributing to the improved properties.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Polymer Science
Pooria Khalili, Mikael Skrifvars, Hom Nath Dhakal, Saeid Hosseinpour Dashatan, Mikael Danielsson, Alexia Feiner Gracia
Summary: Sandwich composites consisting of regenerated cellulose fabric and bio-based polypropylene as facings, as well as virgin and recycled polyamide textiles as core materials, were produced using compression moulding techniques. The addition of thicker recycled textile improved the bending stiffness and peak flexural force. Substituting one layer of recycled textile for two layers of virgin material provided good impact energy absorption capacity and maximum force. Tensile strength varied among the different composite materials, but no evidence of fiber tow debonding, fiber bundle splitting, or delamination was observed.
Article
Polymer Science
Mina Arya, Else-Marie Malmek, Thomas Koch Ecoist, Jocke Pettersson, Mikael Skrifvars, Pooria Khalili
Summary: The rising industrial demand for environmentally friendly and sustainable materials has led to increased research on natural fibers, particularly jute fibers. This study investigates the mechanical properties of plasma-treated jute composite laminates and the flexural behavior of jute fabric-reinforced sandwich composites. The results show that plasma treatment improves the mechanical properties of jute composites, and the flexural properties of jute sandwich composites can be enhanced by incorporating PET100 foams.
Article
Engineering, Environmental
Samira Akbari, Andrew Root, Mikael Skrifvars, Sunil Kumar Ramamoorthy, Dan Akesson
Summary: Unsaturated polyester resins derived from oil-based monomers have limited applicability in high-temperature environments due to their low thermal stability. This study focuses on developing bio-based solventless unsaturated polyester resins, and results show that resins based on 2,5-furandicarboxylic acid have superior thermomechanical properties compared to commercial reference resins.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Materials Science, Composites
Anjum Saleem, Luisa Medina, Mikael Skrifvars
Summary: This study aimed to enhance the mechanical properties of bast fiber reinforced acrylic-based polyester resin composites by hybridizing with basalt fibers, which significantly improved the mechanical performance compared to bast fiber composites. The hybrid composites showed approximately 21% and 19% higher flexural modulus and strength, around 31% and 16% higher tensile modulus and strength, and 13% higher impact energy than bast fiber reinforced composites.
JOURNAL OF COMPOSITES SCIENCE
(2021)
