Article
Polymer Science
Jiang Shao, Le Zhou, Yuqi Chen, Xue Liu, Mingbo Ji
Summary: This study proposed an improved Knott model by introducing the interphase region and assuming its properties, which accurately predicts the dielectric constant of polymer-based nanocomposites. The research results show that factors such as polymer matrix, nanoparticles, interphase dielectric, thickness, nanoparticle size, and volume fraction have an important impact on the dielectric properties of nanocomposites.
Article
Energy & Fuels
Carlos Andres Perez-Lopez, Jaime Andres Perez-Taborda, Cilene Labre, Juan Manuel Marmolejo-Tejada, Andres Jaramillo-Botero, Alba Avila
Summary: This study investigates the impact of interphases in nanocomposite generators, challenging previous assumptions by demonstrating the crucial role of interphases in high voltage generation. The results suggest that engineering of interphases could be an effective design strategy for achieving high voltage generation.
Article
Chemistry, Multidisciplinary
Xiaoqing Ming, Le Yao, He Zhu, Qi Zhang, Shiping Zhu
Summary: This study introduces a polymer gel material that exhibits remarkable and reversible water-induced stiffening based on phase separation, differing from traditional materials. The material shows a significant change in stiffness and offers a universal approach for water-induced stiffening.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Byoungwook Park, Hongkyu Kang, Yeon Hee Ha, Jehan Kim, Jong-Hoon Lee, Kilho Yu, Sooncheol Kwon, Soo-Young Jang, Seok Kim, Soyeong Jeong, Soonil Hong, Seunghwan Byun, Soon-Ki Kwon, Yun-Hi Kim, Kwanghee Lee
Summary: Polymer blends, special types of polymeric semiconductors, offer new opportunities for next-generation electronics due to their versatile functionalities. Studies show that the formation of nano-network structures in an insulating polymer matrix can enhance charge carrier mobility.
Article
Materials Science, Composites
Mohammad Amini, Shuying Wu
Summary: A polymer blend nanocomposite incorporating nanohydroxyapatite (nHA) exhibited triple-shape memory behavior, with improved thermal stability and storage modulus. However, excess nHA content led to aggregation in the polymers and decreased shape recovery ratio. Increasing thermomechanical cycles had a significant effect on shape memory behavior, showing a synergistic effect with the addition of nanofiller.
COMPOSITES COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Shaojie Wang, Zhen Luo, Jiajie Liang, Jun Hu, Naisheng Jiang, Jinliang He, Qi Li
Summary: Polymer nanocomposite dielectrics with exceptional electric properties are discussed in this critical overview. The role of the matrix/particle interface in determining the performance of these materials is emphasized. Various experimental strategies and characterization techniques for studying the local property-structure correlation of the interface are analyzed, with a focus on their unique capabilities. The limitations of each strategy are evaluated and compared, and future research directions are proposed.
Article
Engineering, Multidisciplinary
Chi Zhang, Mingyang Chen, Benoit Coasne, Sinan Keten, Dominique Derome, Jan Carmeliet
Summary: Intermolecular interactions at the fiber-matrix interface strongly influence the hygromechanical behavior and overall mechanical performance of hydrophilic cellulosic nanocomposites. The investigation of a model interface inspired by natural wood reveals an anisotropic and non-monotonic swelling behavior of the composite with increasing moisture content. The findings on the interfacial shear strength and the correlation between hydrogen bonds and interfacial shear stress provide insights into the mechanics of fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Composites
Yasser Zare, Kyong Yop Rhee
Summary: In this article, the tensile modulus of a polymeric system containing dispersed halloysite nanotubes (HNT) and adjacent interphase section is investigated using the Kolarik model. The model considers factors such as HNT concentration, the extents of HNT and nearby interphase section, and the densities of polymer medium and HNT. The results show that the modulus of the system decreases with increasing HNT radius, while HNT weight percentage directly controls the nanocomposite's modulus. Furthermore, the experimental data matches the calculations, validating the accuracy of the model.
POLYMER COMPOSITES
(2022)
Article
Chemistry, Physical
Wenbin Li, Xiaoniu Guo, Keming Song, Jiacheng Chen, Jiyu Zhang, Guochuan Tang, Chuntai Liu, Weihua Chen, Changyu Shen
Summary: A novel composite binder composed of polar polymer chondroitin sulfate A (sodium salt) and polyethylene oxide by hydrogen bonding is developed to passivate defects on the hard carbon surface. It reduces the exposure of defects and inhibits electrolyte decomposition, resulting in an ultra-thin (9 nm) and NaF-rich solid-electrolyte interphase. The composite binder accelerates Na+ transport and facilitates PF6- decomposition, leading to improved initial Coulombic efficiency (84%) and high-capacity retention (94% after 150 cycles) for hard carbon anodes in a NaPF6/ethylene carbonate/dimethyl carbonate electrolyte.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Petra Bacova, Wei Li, Alireza F. Behbahani, Craig Burkhart, Patrycja Polinska, Manolis Doxastakis, Vagelis Harmandaris
Summary: This study investigated the conformational and dynamical features of unentangled and mildly entangled cis-1,4-polybutadiene melts near an amorphous silica surface through atomistic simulations. The results reveal dynamical heterogeneities on the silica surface and suggest that configurational entropy plays an important role in the dynamic response of polymers confined between silica slabs.
Article
Polymer Science
Mohammed Houssat, Christina Villeneuve-Faure, Nadine Lahoud Dignat, Marie-Laure Locatelli, Jean-Pascal Cambronne
Summary: The interphase region significantly affects the dielectric properties of nanocomposites, especially at higher temperatures. Multiscale characterization reveals a correlation between interphase width and temperature. Additionally, a strong relationship is observed between interphase dielectric permittivity and NC breakdown strength.
Article
Materials Science, Composites
Xiaodong Wang, Wei Jian, Haibao Lu, Denvid Lau, Yong Qing Fu
Summary: The study found that the thermodynamic relaxation of SMP nanocomposites is determined by the cooperative effects of sub-entanglement and topological entanglement of macromolecule chains, selectively enhancing relaxation behaviors and enabling a high recovery stress. By applying a coupling model to predict the constitutive relationships and shape memory behaviors, the study demonstrated the effectiveness of the model in revealing toughening mechanisms of shape recovery strength in SMP nanocomposites by nanoparticles.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Optics
Sameer Al-Bati, Mohammad Hafizuddin Hj. Jumali, Ibtehaj Khatatbeh, Bandar Ali Al-Asbahi
Summary: The addition of TiO2 nanoparticles enhanced the electron-hole recombination and energy transfer efficiency in the ternary blend, particularly by improving the Forster resonance energy transfer (FRET) while obstructing the Dexter energy transfer mechanism. Furthermore, the emitted color from the blends can be simply controlled via the addition of NPs.
Article
Nanoscience & Nanotechnology
Takayuki Hirai, Ko Kugimoto, Shin Oyama, Yasuhiko Takeda
Summary: A thermochromic composite with carbon absorber and a thermoresponsive polymer blend has been developed for temperature-adaptive solar heat management. The composite exhibits reversible haze transition and high-contrast haze switching due to the refractive index matching and melting/crystallization of polycaprolactone. The presence of carbon black further contributes to the solar-absorption-switching properties of the composite. Spectral measurements show significant solar reflectance variation in the range of 20-60 degrees C. The thermochromic composite demonstrates successful temperature-adaptive thermal management under natural sunlight.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Multidisciplinary
Kangyi Lu, Zihan Wang, Gang Li, Ruoqian Jiang, Gang Sui, Xiaoping Yang, Jiangpeng Zhao
Summary: An epoxy matrix with a high elastic modulus is designed to fabricate carbon fiber composites with high longitudinal compressive strength. The relationship between the grafting chains on the silica surface and the interphase of the resin matrix is studied through molecular dynamic simulations and experiments. The enhanced modulus of the interphase leads to improved longitudinal compressive strength of carbon fiber composites.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Eren Kushan, Can Demir, Erkan Senses
Article
Polymer Science
Erkan Senses, Saeid Darvishi, Madhu Sudan Tyagi, Antonio Faraone
Article
Chemistry, Physical
Peng Luo, Yanqin Zhai, Erkan Senses, Eugene Mamontov, Guangyong Xu, Antonio Faraone
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Optics
Itir Bakis Dogru-Yuksel, Mertcan Han, Gregor Pirnat, Emir Salih Magden, Erkan Senses, Matjaz Humar, Sedat Nizamoglu
Review
Polymer Science
Erkan Senses, Christopher L. Kitchens, Antonio Faraone
Summary: The addition of nanoparticles to a polymer matrix can reduce the viscosity of resulting composites, a phenomenon that cannot be explained by conventional rheological models. This paper demonstrates the value and methods of dynamic X-ray and neutron scattering techniques in investigating polymer nanocomposites, presenting an overview of main results and introducing basic concepts of X-ray photon correlation spectroscopy, neutron backscattering, and neutron spin echo measurements.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Polymer Science
Saeid Darvishi, Muhammad Anwaar Nazeer, Madhusudan Tyagi, Qingteng Zhang, Suresh Narayanan, Seda Kizilel, Erkan Senses
Summary: The study found that nonlinear polymers can significantly alter the mechanical properties of polymer nanocomposites, and attractive NPs in highly branched matrices can markedly slow down the average dynamics of the polymer. Additionally, the nanoscale dynamics of particles in compact nonlinear matrices show strong decoupling from bulk viscoelasticity.
Article
Engineering, Biomedical
Mertcan Han, Erdost Yildiz, Humeyra Nur Kaleli, Selcan Karaz, Guncem Ozgun Eren, Itir Bakis Dogru-Yuksel, Erkan Senses, Afsun Sahin, Sedat Nizamoglu
Summary: Optoelectronic biointerfaces integrated with hydrogels enable efficient, flexible, stable, biocompatible, and safe photostimulation of cells, holding great promise for next-generation wireless neural and cardiac implants.
ADVANCED HEALTHCARE MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Recep Bakar, Saeid Darvishi, Tianyu Li, Mertcan Han, Umut Aydemir, Sedat Nizamoglu, Kunlun Hong, Erkan Senses
Summary: The use of nonlinear PEO in PEO/PMMA blends leads to a significant increase in their ionic conductivity by enhancing the decoupling of PMMA and PEO segmental dynamics, ultimately improving the performance of the electrolytes. Macromolecular architecture can serve as a tool to decouple segmental dynamics and ion mobility, allowing for the rational design of SPEs with improved performance.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Chemical
Isik Sena Akgun, Enis Demir, Murat Isik, Nadin Ekmekciyan, Erkan Senses, Can Erkey
Summary: Alginate aerogel particles were successfully coated with a copovidone and hydroxypropyl cellulose based polymer in a Wurster fluidized bed. The results indicate that the pores of aerogels were not damaged during the process. Changing bed temperature led to significant changes in coating thickness whereas both bed temperature and atomizing pressure affected coating layer surface morphology. The smoothest coating layer surface and the highest coating efficiency were achieved at 50 degrees C with 1.7 bar atomizing pressure.
Article
Biochemistry & Molecular Biology
Selcan Karaz, Mertcan Han, Gizem Akay, Asim Onal, Sedat Nizamoglu, Seda Kizilel, Erkan Senses
Summary: Understanding the interaction between biological membranes and extracellular matrices is crucial for controlling cell behavior and functions. This study investigates how the viscoelastic extracellular environment modifies the dynamics of lipid membranes. The results show a dynamic coupling between polymer chains and phospholipid bilayers, with the lipid bilayer viscosity directly influenced by the relaxation of the whole chain.
Review
Engineering, Biomedical
Selcan Karaz, Erkan Senses
Summary: The targeted delivery of drugs without damaging healthy tissues is a challenge in drug delivery systems. Stimuli-responsive materials, such as shear-sensitive liposomes, have been investigated to address this issue. Shear-sensitive materials can be categorized into shear-disaggregated and shear-deformed nanoparticles based on their structural changes under high-shear stress. Liposomes, with their soft and deformable structure, high biocompatibility, controlled-release properties, and sensitivity to shear stress, show promise as drug carriers. This review discusses the effects of shear stress on liposomes, including structural changes, flow regimes, rheological properties, and drug delivery applications, providing a basis for designing more effective drug delivery systems in the human body.
ADVANCED NANOBIOMED RESEARCH
(2023)
Article
Polymer Science
Selcan Karaz, Gizem Akay, Ismail C. Karaoglu, Mertcan Han, Sedat Nizamoglu, Seda Kizilel, Erkan Senses
Summary: Shear forces play a significant role in cellular processes and are particularly important in cardiovascular diseases. Although various stimuli have been explored for on-demand release, developing drug delivery systems that respond to physiological-level shear stresses is challenging. Liposomes embedded in hydrogel matrices offer a promising solution as they can dynamically interact with their surroundings. However, understanding the interaction between liposomes and hydrogels, as well as their response to shear forces, is crucial for optimal drug delivery systems.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Recep Bakar, Saeid Darvishi, Umut Aydemir, Ugur Yahsi, Cumali Tav, Yusuf Ziya Menceloglu, Erkan Senses
Summary: This study systematically investigated the effects of polymer architecture and salt concentration on the properties of PEO-based polymer electrolytes. The results showed that branching of PEO can improve ion coordination and increase the ionic conductivity. Highly branched polymers exhibited significantly higher ionic conductivity compared to linear polymers. The addition of salt in the highly branched architectures resulted in accelerated yet similar monomeric friction coefficients, offering potential for enhancing battery performance.
ACS APPLIED ENERGY MATERIALS
(2023)
Meeting Abstract
Biophysics
Selcan Karaz, Erkan Senses
BIOPHYSICAL JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Eren Kushan, Erkan Senses
Summary: Cellulose nanocrystals and temperature responsive Pluronic F127 were used to create composite hydrogels with varying concentrations of CNC, leading to changes in micellization and gelation behavior. At low concentrations, the composite gel became softer and more deformable, while at high concentrations, the CNC formed its own network to increase toughness. The composite gels showed potential for smart drug delivery systems and adaptive biolubricants.
ACS APPLIED BIO MATERIALS
(2021)