Article
Biotechnology & Applied Microbiology
Tao Shen, Minghui Li, Bo Zhang, Lingxia Zhong, Xiran Lin, Pengpeng Yang, Ming Li, Wei Zhuang, Chenjie Zhu, Hanjie Ying
Summary: This paper investigates the preparation of environmentally friendly wood-plastic composites (WPCs) using corn stalk as the raw material. By optimizing the pretreatment method and selectively removing lignin and hemicellulose, the mechanical performance of the WPCs is improved. The sample with both lignin and hemicellulose removed shows the highest crystallinity and fibrous morphology, and exhibits significantly increased tensile strength, modulus, flexural strength, and modulus compared to regular WPCs. Additionally, the extracted lignin and hemicellulose can be further utilized for valuable biochemical products, adding value to both WPC materials and biorefinery products.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Forestry
Guanggong Zong, Jiayun Gong, Ziyi Shi, Jianxiu Hao, Xiaomeng Yang, Fangfang Wang
Summary: In this study, wood veneer/wood flour-polyvinyl chloride composites (WWPVCs) were treated with a silane coupling agent to improve their interfacial bonding, mechanical properties, and resistance to moisture and heat. The treated samples showed superior performance compared to those treated with other interface modifiers. Silane coupling agents are easily prepared and environmentally friendly.
Article
Chemistry, Physical
Hailong Xu, Yang Yang, Lifen Li, Baoyu Liu, Xiubo Fu, Xiaohui Yang, Yan Cao
Summary: This study investigated the influence of fiber particle size on the mechanical properties of a wood-plastic composite (WPC). Different sizes of wood fibers were used to reinforce high-density polyethylene (HDPE), either separately or in combination. The results showed that the smallest fiber size resulted in the lowest flexural and tensile properties, but the highest impact strength. Using a blend of fiber sizes led to improved mechanical properties, with composites containing a mix of 20-40 mesh and 40-80 mesh fibers exhibiting the best flexural and tensile performance.
Article
Materials Science, Paper & Wood
Ruige Qi, Chunxia He, Qiang Jin
Summary: The study investigated the effect of plant species on the accelerated weathering behaviors of polyvinyl chloride-based wood-plastic composites (WPCs), revealing changes in color, chemical composition, water absorption, and swelling ratio of the weathered WPCs. Eucalyptus-based composite exhibited the highest mechanical properties among the tested plant species.
Article
Materials Science, Characterization & Testing
Chaouki Bendjaouahdou, Khanssa Aidaoui
Summary: The study demonstrated that chemically treated wood flour is more effective in improving the mechanical and physical properties of polyvinyl chloride compared to untreated wood flour. This suggests that chemically treated wood flour could be a promising substitute for chalk as a filler in PVC-based applications.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Forestry
Dasa Krapez Tomec, Matthew Schwarzkopf, Rozle Repic, Jure Zigon, Bojan Gospodaric, Mirko Kariz
Summary: This paper describes the development and characterisation of wood-filled polylactic acid (PLA) composite filaments for 3D printing. The results indicate the positive effects of thermal modification of wood particles on the properties of filaments and 3D-printed parts. However, further optimization of particle preparation and extrusion parameters is needed to obtain quality filaments with this size of wood particles.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2023)
Article
Engineering, Mechanical
Zhengjie Li, Xiaowen Qi, Changxin Liu, Bingli Fan, Xiao Yang
Summary: This study aims to investigate the effect of polytetrafluoroethylene (PTFE) particle size on the friction and wear properties of glass fiber reinforced epoxy resin composites. The results show that the composite filled with larger PTFE particles has a significantly lower wear rate and exhibits better anchoring of glass fibers compared to composites with other particle sizes.
Article
Materials Science, Multidisciplinary
Shengbo Ge, Shida Zuo, Minglong Zhang, Yonghong Luo, Rui Yang, Yingji Wu, Ye Zhang, Jianzhang Li, Changlei Xia
Summary: The study found that decayed wood plastic composites with chitosan exhibited better properties than decayed wood plastic composites without any additive, and even better than sound wood plastic composites. Adding chitosan to decayed wood powder and PVC improved the performance of the DWPC, reaching the level of sound wood plastic composites. This work proposed a novel green strategy for utilizing decayed wood for making polyvinyl chloride/wood flour composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Construction & Building Technology
Yiqun Fang, Aojing Xue, Fengqiang Wang, Zhijun Zhang, Yongming Song, Weihong Wang, Qingwen Wang
Summary: The study investigated the use of three zinc salts in WF-PVC composites, finding that zinc borate and zinc stannate had some negative effects on thermal stability, but promoted char formation. Zinc exhibited stronger charring ability compared to tin. Zinc stannate and zinc borate were effective flame retardants, delaying ignition time and reducing heat and smoke release.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Biomedical
Sophie Marie Koch, Christian Goldhahn, Florence J. Muller, Wenqing Yan, Christine Pilz-Allen, Cecile M. Bidan, Beatrice Ciabattoni, Laura Stricker, Peter Fratzl, Tobias Keplinger, Ingo Burgert
Summary: Delignified wood (DW) offers a versatile platform for manufacturing composites with a wide range of material properties. This study presents a method for fabricating anisotropic and mechanically tunable DW-hydrogel composites. The mechanical properties of these composites can be adjusted by crosslinking time and diffusion-led crosslinking allows for the manufacturing of mechanically graded structures. The resulting anisotropic DW-hydrogel composite enables cell alignment in vitro, which has potential applications in tissue engineering.
MATERIALS TODAY BIO
(2023)
Article
Materials Science, Composites
Diego Valdevino Marques, Gabriel Oscar Cremona Parma, Igor Fagundes Valezan, Ana Carolina de Aguiar, Bruno Afonso Buchele Mendonca, Americo Cruz Junior, Luciano da Silva, Florentino Soriano Corral, Saul Sanchez, Ricardo Luis Barcelos, Rachel Faverzani Magnago
Summary: This study investigated the effects of adding PVC residues and cement/alumina trihydrate on the production of fire-resistant thermal-acoustic insulation material. The composites showed lower thermal conductivity and improved flammability resistance compared to traditional materials like perforated brick. Additionally, the use of PVC/cement/alumina trihydrate composites resulted in cost savings and reduced carbon dioxide emissions, contributing to a more sustainable and environmentally responsible industry.
POLYMER COMPOSITES
(2021)
Article
Chemistry, Physical
Marta Dobrosielska, Renata Dobrucka, Dariusz Brzakalski, Milosz Frydrych, Paulina Kozera, Monika Wieczorek, Marek Jalbrzykowski, Krzysztof J. Kurzydlowski, Robert E. Przekop
Summary: Fractionation of diatomaceous earth allowed for obtaining a range of particle sizes, with modification using the smallest particles resulting in improved impact strength, melt flow rate, and elasticity of the PLA composite material.
Article
Engineering, Chemical
H. S. Rothberg, S. Pietsch-Braune, L. Spahr, Y. Kanina, S. Heinrich
Summary: Bio composites exhibit excellent mechanical properties, making them suitable for various applications such as tooth replacement materials and industrial structural materials. The suspension composition was identified as the key factor influencing product properties, and composite materials with high bending strength and Young's modulus were successfully produced using a Nano Spray Dryer.
Article
Polymer Science
Geeta Pokhrel, Douglas J. Gardner, Yousoo Han
Summary: This study investigates the properties of WPCs made from wood flour and wood pellets, showing that composite products from wood pellets have higher density but lower tensile strength, tensile modulus, and impact strength compared to those made from wood flour. Flexural properties of composites made with pellets were higher without MAPP, but lower with it. Overall, the mechanical property differences between the two were low (0.5-10%) depending on the specific WPC formulations. Statistical analysis indicated no significant differences in material properties between composites made from wood flour and wood pellets, with some situations showing better WPC properties using wood pellets.
Article
Polymer Science
Mohammed N. Alghamdi
Summary: Fly ash polymer composites with small particles can enhance mechanical properties, while large particles may cause filler/matrix delamination during recycling. The study provides insights on effective utilization of fly ash for sustainable and economical solutions.
Article
Polymer Science
Izabela Kruszelnicka, Dobrochna Ginter-Kramarczyk, Anna Rudawska, Stanislaw Zajchowski, Jolanta Tomaszewska
Article
Materials Science, Characterization & Testing
Slawomir Michalowski, Aleksander Prociak, Stanislaw Zajchowski, Jolanta Tomaszewska, Jacek Mirowski
Article
Chemistry, Multidisciplinary
Edwin Makarewicz, Jacek Mirowski, Przemyslaw Siekierka, Krzysztof Lewandowski, Andrzej Grabowski, Dorota Ziolkowska
PRZEMYSL CHEMICZNY
(2017)
Article
Polymer Science
Izabela Kruszelnicka, Dobrochna Ginter-Kramarczyk, Anna Rudawska, Stanislaw Zajchowski, Jolanta Tomaszewska
Article
Polymer Science
Jaroslaw Jaszewski, Stanislaw Zajchowski, Jolanta Tomaszewska, Jacek Mirowski
Article
Polymer Science
Jaroslaw Jaszewski, Stanislaw Zajchowski, Jolanta Tomaszewska, Jacek Mirowski
Article
Polymer Science
Izabela Kuszelnicka, Anna Rudawska, Dobrochna Ginter-Kramarczyk, Michal Michalkiewicz, Stanislaw Zajchowski, Jolanta Tomaszewska
Article
Polymer Science
Krzysztof Lewandowski, Katarzyna Skorczewska, Kazimierz Piszczek, Marek Manikowski, Jacek Mirowski
Article
Polymer Science
Jacek Mirowski, Rafal Oliwa, Mariusz Oleksy, Jolanta Tomaszewska, Joanna Ryszkowska, Grzegorz Budzik
Summary: Adding 20% of raspberry pomace filler after extraction significantly extended the thermal stability time for the composites, but as the concentration of filler in the PVC matrix increased, the composite density, impact strength, and tensile strength values decreased significantly while their modulus of elasticity and Shore hardness increased.
Article
Engineering, Civil
K. Salasinska, K. Mizera, M. Celinski, P. Kozikowski, J. Mirowski, A. Gajek
Summary: The complex of zinc phosphate and 3-amine-1,2,4-triazole synthesized by a one-pot reaction was used as an intumescent flame retardant for flexible PVC. The PVC containing this developed flame retardant showed the lowest total heat release and smoke emission among all investigated samples, without significantly influencing the mechanical and thermomechanical properties of the final products compared to pure PVC.
FIRE SAFETY JOURNAL
(2021)
Article
Polymer Science
Kamila Salasinska, Mateusz Barczewski, Maciej Celinski, Pawel Kozikowski, Rafal Kozera, Aleksandra Sodo, Jacek Mirowski, Stanislaw Zajchowski, Jolanta Tomaszewska
Summary: This study assessed the burning behavior and smoke emission of plasticized PVC-P modified with a two-component composition of LHP and nanoclay, with significant improvements observed in smoke suppression. The thermal and thermodynamical properties were analyzed using TG and DMTA, suggesting that the n/LHP system may be a candidate fire retardant for decreasing the flammability of PVC-P.
Article
Polymer Science
Jacek Mirowski, Rafal Oliwa, Mariusz Oleksy, Edward Roj, Jolanta Tomaszewska, Kamila Mizera, Joanna Ryszkowska
Summary: This study investigated the effect of residual hops on the properties of poly(vinyl chloride) (PVC), finding that their addition increased thermostability but decreased density, impact strength, and tensile strength. On the other hand, their Young's modulus, flexural modulus, and Rockwell hardness increased. Flame resistance tests showed that with increasing hop content, the limiting oxygen index and maximum heat release rate decreased, leading to a flammability rating of V0 according to the UL94 test.
