Article
Chemistry, Multidisciplinary
Yuri N. Starodubtsev, Vladimir S. Tsepelev, Nadezhda P. Tsepeleva
Summary: The study found that there is a linear relationship between the kinematic viscosity and temperature for multicomponent melts of nanocrystalline soft magnetic alloys. The activation energy of viscous flow is linearly related to the cluster size and the melt viscosity increases with decreasing cluster size. The change in the Arrhenius plot on the temperature dependence of viscosity in the anomalous zone suggests a liquid-liquid structure transition.
Article
Polymer Science
Xiaoxue Wu, Tiantian Song, Zizhen Wei, Lei Shen, Hanqiu Jiang, Yubin Ke, Chunyong He, Hua Yang, Weichao Shi
Summary: Studies have shown that even a small amount of lithium salt can significantly enhance the liquid-liquid phase separation of PEO/PS blends, with the effect of electrostatic interaction increasing with temperature.
Article
Materials Science, Multidisciplinary
Rui Qiao, Haoran Xu, Shaonan Chen, Sheng Chen, Hang Luo, Dou Zhang
Summary: Dielectric polymers are crucial in modern electronic and electrical applications due to their easy processing, lightweight, and high breakdown strength. By combining different polymer advantages, the dielectric polymer blending method is a feasible option to address the issue of high ε(r) and breakdown strength in dielectric homopolymers. Experimental results showed the significant impact of n-type semiconductive polymer on the dielectric and energy storage properties of PPDI/PVTC blends.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Polymer Science
Russell K. W. Spencer, Mark W. Matsen
Summary: In this study, we critically reassessed off-lattice Monte Carlo simulations of athermal blends of stiff and flexible polymers next to a hard wall. Our improved simulations show that the flexible polymers actually have a long-range surface preference, contradicting the original simulations, experiments, and alternative calculations. This resolves a long-standing controversy and supports the predictions of mean-field theory regarding the concentration profile of the flexible polymer.
Review
Chemistry, Multidisciplinary
Ahmad Adlie Shamsuri, Siti Nurul Ain Md Jamil
Summary: This review focuses on the application of two types of QACs as compatibilizers for polymer blends and polymer composites, specifically quaternary ammonium surfactants (QASs) and quaternary ammonium ionic liquids (QAILs), due to their unique chemical structure and interaction capabilities with polymer components. The influence of QASs and QAILs on the thermo-mechanical properties of the polymer blends and composites is also discussed, aiming to provide insights for researchers in this field.
APPLIED SCIENCES-BASEL
(2021)
Article
Physics, Applied
Ji-Xuan Hou
Summary: In this paper, a coarse-graining method is presented to obtain the primitive chain from a polymer chain configuration in the entangled polymer melt by eliminating high-frequency Rouse modes. Theoretical demonstration shows that the tube step length is twice the tube diameter using this coarse-graining procedure. Additionally, a simple method to visualize the tube by adding high-frequency modes to the primitive chain is also provided.
MODERN PHYSICS LETTERS B
(2023)
Article
Chemistry, Physical
Mennatalla Elmanzalawy, Elena Sanchez-Ahijon, Ozden Kisacik, Javier Carretero-Gonzalez, Elizabeth Castillo-Martinez
Summary: A solvent-free synthesis method was used to prepare a series of potential polymer electrolytes for K-ion batteries. These electrolytes exhibited good ionic conductivity and chemical stability, allowing for reversible (de)intercalation of K+ ions at lower temperatures.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
S. Lee, C. H. Lee, A. Berlie, A. D. Hillier, Devashibhai T. Adroja, Ruidan Zhong, R. J. Cava, Z. H. Jang, K-Y Choi
Summary: This study reports the observation of spin-liquid-like excitations in Na2BaCo(PO4)(2) on a triangular lattice and confirms its characteristics as a quantum spin liquid. Experimental results show no static magnetism down to 80 mK, consistent with the expectations for a quantum spin liquid.
Article
Polymer Science
Yihui Zhu, Jintian Luo, Qingzhi Zou, Xikai Ouyang, Yifu Ruan, Yuchu Liu, GengXin Liu
Summary: 3-dimensional architectured polymers, such as giant molecules, exhibit distinct dynamics from chain-like polymers. By studying binary blends of giant molecules, it is found that the majority component forms a cooperative glass state when it contains more beads than a critical number. A sudden slowdown in dynamics occurs when the volume fraction of the majority component reaches 80%. Both experimental and simulated data can be described by a Vogel-Fulcher-Tammann-like equation, and the relaxation times can be expressed as a function of the average number of beads.
Article
Chemistry, Multidisciplinary
Sophia Y. Chan, Mayank Jhalaria, Yucheng Huang, Ruipeng Li, Brian C. Benicewicz, Christopher J. Durning, Thi Vo, Sanat K. Kumar
Summary: Polymer-grafted nanoparticle membranes show unexpected gas transport enhancements, but the structural origins of this behavior are unclear. This study measured and interpreted data on grafted nanoparticles and found that as the graft molecular weight increases, the gas transport enhancement decreases.
Article
Polymer Science
Dara Nguyen, Melinda Desse, Corinne Jegat
Summary: This study investigates the influence of introducing oily liquid in a polyethylene-co-octene and polyethylene oxide polymer blend prepared in the molten state. The phase in which the oil stays is mainly driven by surface tension, while viscosity influences the mobility of the oil through the phases.
Article
Materials Science, Multidisciplinary
Vladimir S. Tsepelev, Yuri N. Starodubtsev, Viktor V. Konashkov
Summary: The study investigated the temperature dependence of the kinematic viscosity of multicomponent Fe-Ni alloy melts with different Ni contents, revealing the influence of Ni atom surface segregation on the fluidity and solidification properties of the melts. As the Ni content increases, the viscosity of the melts changes at higher temperatures.
Review
Chemistry, Physical
Pavan K. Inguva, Pierre J. Walker, Hon Wa Yew, Kezheng Zhu, Andrew J. Haslam, Omar K. Matar
Summary: The Cahn-Hilliard equation is used to study multi-component soft systems, and the choice of thermodynamic model has little influence on morphology development but strongly affects liquid-liquid interfacial tension.
Article
Polymer Science
Giordano P. Bernardes, Matheus P. Andrade, Matheus Poletto, Nathalia R. Luiz, Ruth M. C. Santana, Maria M. de C. Forte
Summary: The influences of ethylene-based elastomer (EE) and the compatibilizer agent ethylene-butyl acrylate-glycidyl methacrylate (EBAGMA) on the thermal degradation of PLA/EE blends were evaluated. It was found that the presence of EE and EBAGMA synergistically improved the thermal stability of PLA.
Article
Chemistry, Physical
Qian Li, Rui Wang, Tao Yu, Xiaoyong Wang, Zhi-Guo Zhang, Yuan Zhang, Min Xiao, Chunfeng Zhang
Summary: Researchers have identified a new charge separation channel in model copolymer/NFA blends, which allows for long-range charge separation and direct release of free charges. This mechanism, in conjunction with the short-range pathway that involves interfacial charge-transfer excitons, holds potential for optimizing OPVs with diverse device structures.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
