Article
Chemistry, Multidisciplinary
Haitao Zhou, Chongchen Yu, Hongquan Gao, Jian-Chun Wu, Dong Hou, Menghao Liu, Minghui Zhang, Zifu Xu, Jianhong Yang, De Chen
Summary: The study introduces a solid state separator made of lithiated polyphenylene sulfide and functionalized to improve Li+ transference, allowing lithium metal batteries to achieve higher energy and power densities under high loadings and voltages.
Article
Chemistry, Physical
Jiwon Yu, Myungsuk Lee, Yeonseo Kim, Hyung-Kyu Lim, Jonghyun Chae, Gyeong S. Hwang, Sangheon Lee
Summary: This study demonstrates that certain neutral molecules can accelerate solid-state lithium-ion migration, with intermolecular interaction in a selected binary system being governed by the strong coupling between lithium and oxygen atoms. By replacing surrounding anionic species with agent molecules, the weakened Coulomb energy coupling between lithium and oxygen atoms enables fast lithium-ion migration.
JOURNAL OF POWER SOURCES
(2021)
Review
Engineering, Multidisciplinary
Guowei Chen, Amar K. Mohanty, Manjusri Misra
Summary: PPS/carbon composites have excellent mechanical properties and multifunctionality, suitable for various industries. Bio-carbon has the potential to replace petroleum-based carbon fillers.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Haitao Zhou, Feng Ling, Haiyun Zhou, Jian-chun Wu, Xiaowei Li, Dong Hou, Jingyi Ge, Teng Xu, Hongquan Gao
Summary: The anode material of sodium ion battery (SIB), Ferrous sulfide (FeS), has high specific capacity and high tap density but faces challenges such as low electrical conductivity and polysulfide shuttle issue. A method of carbon-coated ferrous sulfide (FeS@C) is proposed to enhance conductivity and stability. In addition, a solid-state separator (PPS-SSS) with anodic protection (PE-PPS-CSSS) and TCBQ modification is introduced to improve battery stability. The half-cell shows 90% initial coulomb efficiency and a specific capacity of 360 mAh g-1, and the full cell demonstrates 81% capacity retention for 600 cycles at 1 C. (c) 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Shuo Wang, Yujing Wu, Tenghuan Ma, Liquan Chen, Hong Li, Fan Wu
Summary: This study experimentally investigates the thermal stability performance of sulfide solid electrolytes and proposes an improved method to enhance the thermal stability between sulfide solid electrolytes and oxide cathodes.
Article
Materials Science, Multidisciplinary
You Shi, Yang Bai, Yanzhou Lei, Haoruo Zhang, Shengtai Zhou, Huawei Zou, Mei Liang, Yang Chen
Summary: Self-lubricating polyphenylene sulfide (PPS) composites were fabricated with segregated network structure using the co-deposition method. The hierarchical reinforcing hybrids PPS@PDA-CNTs-SiC showed significantly enhanced thermal conductivity and improved tribological performance compared to PPS/CNTs/SiC composites. This study provides insights into expanding the application of self-lubricating polymer composites in fields where efficient heat dissipation is crucial.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Polymer Science
Lina N. Ghanbari, Erin R. Crater, Nicholas R. Enos, Olivia D. Mcnair, Robert B. Moore, Jeffrey S. Wiggins
Summary: This study investigates the effects of exposure to standard melt processing conditions in oxygen-rich environments on the rheological properties, crystallization behavior, and crystal structure of polyphenylene sulfide (PPS), a high-performance semi-crystalline thermoplastic. The results show that extended melt-state exposure causes an increase in PPS melt viscosity and changes in rheological properties. It also decreases overall crystallinity and reduces lamellar thickness, with no changes to the unit cell structure. These findings have important implications for controlling melt processing steps and understanding the final material state in high-performance thermoplastic matrix composites.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Polymer Science
Yuyang Ding, Junsu Park, Ryohei Ikura, Saori Nara, Kazuki Toda, Yoshinori Takashima
Summary: Cyclic polyphenylene sulfide (PPS) is an unavoidable byproduct of linear PPS production. Utilizing cyclic PPS as an additive in supramolecular chemistry can improve the mechanical properties of polystyrene-based materials. It was found that the addition of cyclic PPS significantly increased the toughness of PS-PEA and slightly increased the Young's modulus. Additionally, cyclic PPS formed reversible and movable cross-links with PS-PEA, promoting homogeneous blending. This study not only provides a method to utilize cyclic PPS but also offers a practical approach to preparing reinforced PS-based polymers.
Article
Chemistry, Physical
Ruitong Song, Youkui Zheng, Hong Li, Yong Mao, Kai Xiong, Jing Zhu
Summary: In this study, dysprosium activators were doped into barium tellurooxyphosphate to improve luminescent performance, and alkali metal ions were used as charge compensators. The optical absorption behavior and enhanced emission intensity of the phosphor were investigated. The study reveals that the doped phosphor shows promise as a yellow-emitting candidate for white light-emitting diodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Ruiqing Zhang, Huidong Xie, Qiyu Zhao, Zuobin Tang, Chang Yang, Binbin Su
Summary: A novel hybrid antimony chloride (CTP)(2)SbCl5 is synthesized, which exhibits high photoluminescence quantum yield and good stability. The material demonstrates dual-band emission and can be used for white light-emitting diodes (LEDs) with high color rendering index.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Younghwan Park, Songhyun Lee, Kyunglim Hyun, Jueun Lee, Jeong Young Park, Ryong Ryoo, Minkee Choi
Summary: By introducing Am-PPS as a promoter, modifying the catalyst led to a significant enhancement of ethylene selectivity and acetylene hydrogenation activity, possibly due to the selective adsorption of acetylene and H-2 at the Am-PPS-Pd interface. The modified catalyst showed excellent long-term stability, demonstrating the unique potential of dynamic metal-polymer interaction in designing partial hydrogenation catalysts.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Carolin Rosenbach, Felix Walther, Justine Ruhl, Matthias Hartmann, Theodoor Anton Hendriks, Saneyuki Ohno, Juergen Janek, Wolfgang Zeier
Summary: Halide-based solid electrolytes are gaining interest in solid-state batteries due to their higher electrochemical stability compared to sulfide electrolytes. However, the use of a bilayer separator consisting of a sulfide and a halide is not well understood. This study shows that an electrolyte bilayer improves capacity retention by suppressing interfacial resistance growth. Analytical characterization techniques reveal the chemical incompatibility at the halide and sulfide contact area, emphasizing the importance of considering the chemical compatibility of all components when using halide-based solid electrolytes in solid-state batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Lingqi Huang, Ganggang Ye, Zhibin Ye
Summary: In this study, a commercial available, low-cost, and reactant-inert polyphenylene sulfide (PPS) was utilized as a new solid-phase ligand for selective alkyne hydrogenation. The addition of solid PPS powders effectively suppressed over-hydrogenation and/or isomerization reactions. The beneficial effects could be easily adjusted by varying the dosage of PPS. The solid supported nanocatalysts and PPS could be separated via sedimentation and washing, allowing for subsequent experiments. X-ray photoelectron spectroscopy results indicate that the weak binding of PPS as a solid-phase ligand to nanocatalysts may contribute to the improved selective hydrogenation performance.
MOLECULAR CATALYSIS
(2022)
Article
Engineering, Mechanical
Zebei Mao, Tong Li, Haifei Zhan, Bo Wang
Summary: This study assessed the influences of pressure and temperature on the mechanical properties of semi-crystalline 1-4 polyphenylene sulfide (PPS) using experimental characterization and molecular modeling techniques. The results showed that shear deformation in the flow field is a key factor in the transformation from amorphous polymers to precursors. Pressure can accelerate the transition of precursors to crystals, but the proportion of precursors in PPS is not observed under higher pressure. The findings of this study can be helpful in identifying optimal processing parameters for manufacturing PPS for specific applications.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Chemistry, Physical
Derya Ozyurt, Sunil Shafqat, Tuula T. Pakkanen, Rosalie K. Hocking, Adrian Mouritz, Bronwyn Fox
Summary: By controlling the degree of aggregation, nitrogen-doped graphene quantum dots exhibit various emission colors, including blue, cyan, and greenish yellow. Moreover, for the first time, this study reveals that N-GQDs film can display yellow and orange emissions under 365 nm UV light.
Article
Construction & Building Technology
John Rekstad, Michaela Meir, Espen Murtnes, Aylin Dursun
ENERGY AND BUILDINGS
(2015)
Article
Polymer Science
Ronald Steffen, Gernot Wallner, John Rekstad, Beate Roeder
POLYMER DEGRADATION AND STABILITY
(2016)
Article
Energy & Fuels
Bo Carlsson, Michaela Meir, John Rekstad, Dieter Preiss, Thomas Ramschak
Article
Polymer Science
Ronald Steffen, Howard Setyamukti, Gernot Wallner, Klaus Geretschlaeger, Beate Roeder
POLYMER DEGRADATION AND STABILITY
(2017)
Article
Energy & Fuels
Bo Carlsson, Helena Persson, Michaela Meir, John Rekstad
Article
Energy & Fuels
Ronald Steffen, Mohammed Abdul-Hamza Akraa, Beate Roeder
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2020)
Article
Chemistry, Multidisciplinary
Eugeny A. Ermilov, Martin Schlak, Ronald Steffen, Xiao-Qiong Liu, Jian-Yong Liu, Beate Roeder
Proceedings Paper
Construction & Building Technology
Michaela Meir, Espen Murtnes, Aylin Maria Dursun, John Rekstad
PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON SOLAR HEATING AND COOLING FOR BUILDINGS AND INDUSTRY (SHC 2013)
(2014)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.