Article
Polymer Science
Xiangrong Chen, Chao Dai, Zelin Hong, Muhammad Awais, Ashish Paramane, Yasuhiro Tanaka
Summary: This study investigates the effects of different micro and nano AlN fillers on the electrical performances and thermal properties of hybrid composites at high temperatures. The results show that nano-fillers enhance the electrical performances but decrease the apparent mobility and activation energy of the composites. Additionally, a hypothetical mechanism is proposed to explain the charge carrier injection and transport of the composites at different temperatures.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Ibolya Zita Papp, Angel Alegria, Zoltan Konya, Akos Kukovecz
Summary: This study investigates the effect of depositing a semiconductor layer on ITO coated PET films on the basic thermomechanical properties of the substrate material. The findings indicate that although the thermomechanical properties are impacted to some extent, the sensor substrate material remains usable.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Polymer Science
Ling Wan, Kangkang Guo, Junli Zhu, Fan Wang, Yaping Zhu, Shifeng Deng, Huimin Qi
Summary: This study utilized silicon-containing arylacetylene resins (PSAs) for their excellent thermal stability in high temperature environments, and designed new PSAs with enhanced antioxidant properties and heat resistance by incorporating the target monomer 3,6-diethynylcarbazole (DEC). The resulting silicon-containing carbazolylacetylene resins (PSA-VBC) exhibited lower initial curing temperature and excellent heat resistance, with increased oxidation decomposition temperature and decreased oxygen content in the solidified oxide, showing superior oxidation resistance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Mengmeng Li, Ruihu Wang, Haijie Wang, Xinhua Cao, Yu Cheng, Erqi Guan, Ke Bian
Summary: The industrial application of plywood made from soybean meal-based adhesive (SMA) was enhanced by improving the wet shear strength and water resistance through microwave-chemical treatment. The wet shear strength of SMA was improved to 0.93 MPa by optimizing microwave conditions and using PEG-PEI treatment, which was 32.86% higher than the China National Standard. The modified mechanism was characterized using various techniques, showing that the formation of crosslinking improved the bonding performance and water resistance of SMA, providing favorable conditions for further application.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Dekai Liu, Yirui Shen, Phyu Thin Wai, Haryono Agus, Pingbo Zhang, Pingping Jiang, Zhixin Nie, Guoqiang Jiang, Huihang Zhao, Minzhong Zhao
Summary: In this study, a sustainable and efficient plasticizer AC-FAME-TAE was synthesized using waste cooking oil as the main raw material. The plasticizing efficiency of AC-FAME-TAE for PVC was excellent, with mechanical properties comparable to DOP and good thermal stability and solvent resistance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Yufeng Sun, Yapeng Wang, Wenlong Mu, Zipeng Zheng, Bin Yang, Jinwei Wang, Runkai Zhang, Kaiyuan Zhou, Liang Chen, Jilai Ying, Xinping Liu, Guangyin Xu
Summary: This study investigated the use of micro-nano rice husks (MNRH) fibers compounded with polylactic acid (PLA) to produce 3D-printed filaments. The addition of silane coupling agents improved the surface quality and enhanced the dispersing performance of the MNRH fibers in the composites. The treated composites exhibited improved thermal stability, crystallinity, and water resistance. Furthermore, the mechanical properties of the composites, including tensile strength and bending strength, were significantly enhanced. The findings suggest that the treated composites have great potential for use as environmentally friendly alternative materials in automotive interiors.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Review
Polymer Science
Jorge S. S. Neto, Henrique F. M. de Queiroz, Ricardo A. A. Aguiar, Mariana D. Banea
Summary: The thermal stability of natural fiber composites is crucial in their manufacturing process, as higher temperatures can affect the properties of the fiber components. Various methods are used to determine the thermal properties of these composites, providing valuable information for material development and selection process.
Article
Chemistry, Multidisciplinary
Timothy M. Harrell, Alexander Scherschel, Cole Love-Baker, Amy Tucker, Jeremy D. Moskowitz, Xiaodong Li
Summary: Carbon fiber precursors require thermal stabilization to maintain structural integrity during conversion. This study investigates the oxidation process of mesophase pitch precursor fibers at different weight percentage increases and temperatures using in situ differential scanning calorimetry and thermogravimetric analysis. The findings provide insight into the relationship between stabilization conditions, fiber microstructure, and mechanical properties of the resulting carbon fibers.
Article
Polymer Science
K. Meera, K. Arun, M. T. Ramesan
Summary: This work presents the development of a bio-based polymer blend, PVA/CG, embedded with boehmite nanoparticles to enhance its structural, thermal, mechanical, and electrical properties. The presence of boehmite in the blend was confirmed through FTIR and XRD analysis. SEM images showed uniform dispersion of boehmite at 5 wt%. The addition of boehmite increased the thermal stability and electrical conductivity of the blend, while slightly decreasing the glass transition temperature. Tensile strength and hardness improved with the incorporation of boehmite, making the PVA/CG/boehmite films a potential substitute for flexible electronic and electrochemical devices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Hafsa Jamshaid, Rajesh Kumar Mishra, Vijay Chandan, Shabnam Nazari, Muhammad Shoaib, Laurent Bizet, Petr Jirku, Miroslav Muller, Rostislav Choteborsky
Summary: This research focuses on thermoplastic polyamide (PA6)-based composites reinforced with basalt and Kevlar fabrics. The stacking sequence of basalt and two types of Kevlar fabrics were altered to develop hybrid composites. Mechanical and thermomechanical properties of the developed samples were evaluated, including tensile, flexural, and impact strength tests, as well as thermogravimetric analysis and differential scanning calorimetry. Scanning electron microscopy was used to study the fracture and failure nature of the composites. The results showed that hybridization with basalt improved the mechanical performance and thermal stability of the composites using Kevlar fabric. The stacking order of the reinforcements could alter the thermomechanical characteristics. These novel hybrid composites have potential applications in high-load-bearing and high-temperature environments.
Article
Polymer Science
Hari P. V. S. Prashanth, Elammaran Jayamani, Kok Heng Soon, Md. Rezaur Rahman, Muhammad Khusairy Bin Bakri
Summary: This study demonstrated the characterization of a flax fiber reinforced polypropylene-strontium titanate composite and dielectric study for low-k dielectric applications. The composite showed higher thermal stability, increased dielectric constants with the addition of strontium titanate, and reduced dielectric losses at higher frequencies with the inclusion of natural fibers and ceramic.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Walther-Dario Bejarano-Pena, Brenda Alcantar-Vazquez, Rosa-Maria Ramirez-Zamora
Summary: Lithium silicate-based CO2 sorbents were synthesized using steel metallurgical slags, with K2CO3 addition improving CO2 capture efficiency by facilitating CO2 diffusion. The best capture capacity value of 104 mg(CO2)/g(material) was achieved with 20 wt% K2CO3 at 600 degrees C. Thermal stability was excellent, with only a 10% reduction in CO2 capture capacity after 20 adsorption-desorption cycles using 20 vol% CO2.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Polymer Science
Daniela Ionita, Mariana Cristea, Susana Felicia Cosmulescu, Georgeta Predeanu, Valeria Harabagiu, Petrisor Samoila
Summary: In recent years, there has been an increasing exploitation of woody lignocellulosic biomasses for environmental mitigation and value-added production. This study conducted a detailed thermo-mechanical characterization on two types of lignocellulosic wastes and analyzed the degradation processes using thermal and dynamic mechanical analyses. The results showed that walnut shells had a better resolution in degradation steps and the DMA analysis revealed the effects of water traces and oil kernels on relaxation.
Article
Energy & Fuels
Abhijit Dutta, Gina M. Fioroni, Earl D. Christensen, Cameron K. Hays, Lisa Fouts, Suphat Watanasiri, Robert L. McCormick
Summary: This article focuses on the evaporation process of ethanol, n-hexane, and n-octane by utilizing a Differential Scanning Calorimetry/Thermogravimetric Analysis (DSC/TGA) method. An Aspen Plus model is used to predict the liquid and vapor phase concentrations during mixture evaporation, and the validation of the model is confirmed by comparing the trends of the mass spectrometry (MS) ion count profiles.
Article
Polymer Science
Sad Atia, Khaled Zeggagh, Slimane Hadjout, Agustin Etxeberria, Zitouni Benabdelghani
Summary: In this study, semiconducting organic materials based on polyaniline and polyvinylpyrrolidone were prepared using in situ polymerization method in acidic aqueous solution. The results showed that the PANI/PVP blends exhibited excellent miscibility and improved thermal stability, as well as enhanced semiconducting properties.
JOURNAL OF POLYMER RESEARCH
(2022)
