Article
Chemistry, Applied
Xiaohua Wang, Ying Liang, Qi Wang, Xinlan Wang, Hanyan Li, Jinshui Wang
Summary: In this study, the correlations between dough rheology and gluten aggregation were investigated by analyzing the rheological properties of low-sodium salt dough and the molecular properties of dough gluten. The results showed that low-sodium salt improved the hardness, extensibility, and compression resistance of the dough, and induced the formation of larger protein clusters. The analysis also revealed that low-sodium salt increased the content of certain glutenin subunits and reduced the content of certain gliadin fractions, resulting in the aggregation of gluten. This study provides new insights and a more comprehensive theoretical basis for sodium reduction.
FOOD HYDROCOLLOIDS
(2023)
Article
Chemistry, Physical
Yue Pan, Kun Tong, Mingyu Lin, Wenchang Zhuang, Wenyou Zhu, Xiao Chen, Qintang Li
Summary: Ionic liquids are promising solvents for self-assembly, and the aggregation behaviors of various surfactants, especially cationic and nonionic surfactants, in ionic liquids have been studied. This work investigates the aggregation behaviors of sulfobetaine zwitterionic surfactants in the protic ionic liquid ethylammonium nitrate (EAN). The study finds the formation of micellar phase, hexagonal lyotropic liquid crystal phase, and an additional micellar cubic lyotropic liquid crystal phase.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Alvaro Javier Patino-Agudelo, Frank H. Quina
Summary: One intriguing characteristic of zwitterionic surfactant micelles is their ability to selectively bind anions of added salts. This study investigates the thermodynamics of the interaction between strongly bound perchlorate ions and weakly bound bromide ions with micelles of N-tetradecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SB3-14) in aqueous solution. The results indicate that both binding processes are exothermic and driven by enthalpy, but unfavorable in terms of entropy. The Gibbs free energy shows only modest changes as the extent of anion binding increases. Additionally, the binding of perchlorate ions has minimal effect on the aggregation numbers of SB3-14 micelles. These findings are explained by considering factors such as the ion-pairing mechanism between anions and the positive charge center of the zwitterion headgroup, as well as the interplay between electrostatics, solvent reorganization, and the loss of translational degrees of freedom during anion binding.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Physics, Multidisciplinary
Debarghya Banerjee, Vincenzo Vitelli, Frank Juelicher, Piotr Surowka
Summary: The mechanical response of active media, including biological gels and living tissues, is influenced by the interplay between viscosity and elasticity. By generalizing canonical models to active viscoelastic media that break symmetries, the resulting theories exhibit viscous and elastic tensors that are odd under index exchange. The analysis focuses on how these parity-violating viscoelastic coefficients impact relaxation mechanisms and wave-propagation properties of odd materials.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
Ruonan Wu, Yuhan Yan, Xingxing Li, Yebang Tan
Summary: In this study, S-PHEDM star block copolymers with pH-responsive properties were synthesized for the controllable reduction of heavy oil viscosity. The properties of the star polymers were characterized, and the aggregation behavior and oil/water interfacial properties were studied. The cyclic regulation of emulsion stability was achieved by adjusting the pH values, providing a new idea for enhancing efficiency during heavy oil recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
Ying-Nien Chou, Ming-Zu Ou
Summary: This research developed a zwitterionic copolymer, poly(OxMA-co-SBMA), with aldehyde functional groups for nucleophilic addition reactions and SBMA units for antifouling properties. The copolymer was grafted onto an amine-based substrate using dip-coating technology, resulting in nonfouling and antiprotein properties. The optimized copolymer exhibited improved hydrophilicity and resistance to protein adsorption, as well as reduced blood cell activation, tissue cell adhesion, and bacterial attachment. The dip-coating method offers a fast and simple procedure for achieving biofouling resistance in biomedical materials.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Chemical
Changhua Yang, Zhenye Yu
Summary: This study investigates the impact of the aggregation and adsorption behavior of oil droplets on the stability of foam systems, and proposes a liquid film drainage mechanism. Furthermore, rheometer analysis reveals that foam fluids exhibit complex rheological behavior.
Article
Electrochemistry
Yueying Peng, Rajashekar Badam, Tejkiran Pindi Jayakumar, Wannaruedee Wannapakdee, Chuchawin Changtong, Noriyoshi Matsumi
Summary: This study explores the application of concentrated imidazolium-based ionic liquids (IL) electrolyte in lithium sulfur (Li-S) batteries. By increasing the salt concentration, the dissolution of lithium polysulfides (LPS) from the sulfur cathode is effectively suppressed, and the stability of the lithium anode is improved. The Li-S battery in the concentrated electrolyte exhibits good cycling stability and high capacity retention.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Energy & Fuels
Rohan M. Jadhav, Ganesh Kumar, N. Balasubramanian, Jitendra S. Sangwai
Summary: This study investigates the synergistic effect of nickel nanoparticles and solvent tetralin on the rheological properties and composition of extra-heavy crude oil, revealing that the addition of 0.2 wt% nickel nanoparticles can significantly reduce the viscosity of oil. Aquathermal upgrading of EHO was conducted with nanoparticles, confirming the catalytic properties of nickel nanoparticles in upgrading EHO through tests such as FT-IR, GC-MS, and SARA characterization. Additionally, a new mechanism describing the dynamics of nickel nanoparticles in contact with asphaltene clusters has been proposed for better understanding.
Article
Geochemistry & Geophysics
A. Soldati, B. F. Houghton, D. B. Dingwell
Summary: During the 2018 Kilauea eruption, magma composition varied greatly from basalt to andesite, leading to different eruptive styles from fountaining to explosions. By collecting 18 representative samples immediately after the eruption and conducting high-temperature laboratory experiments, the study quantified the evolution of melt viscosity, showing a significant variability linked to eruption dynamics. A new standard for studying multi-episode effusive eruptions from a viscosity standpoint was proposed, aiming to make viscosity measurements during ongoing eruptions a routine part of volcano monitoring in the future.
Article
Chemistry, Analytical
Huiqing Yang, Peipei Wang, Fan Geng, Qiongwei Wu, Fuxiang Song, Caifeng Ding
Summary: In this study, a polyaniline-modified electrode was prepared by electropolymerization on a glassy carbon electrode, and further modified with a copolymerization of zwitterionic sulfobetaine methacrylate (SBMA) and hydrophobic N-isopropyl acrylamide (NIPAM) to construct an antifouling biosensor. The PSN modified electrode showed excellent antifouling performance in serum due to the advantages of hydrophobic anchoring and the antifouling performance of zwitterionic polymers.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Ruonan Wu, Yanru Chen, Jing Zhou, Yebang Tan
Summary: A series of double-hydrophilic diblock copolymers of N-acryloylmorpholine (NAMO) and N-isopropylacrylamide (NIPAm) with varying degree of polymerization were synthesized using reversible addition-fragmentation chain transfer (RAFT) polymerization. These copolymers exhibited temperature sensitivity and solvent responsiveness, and showed potential as viscosity reducers and emulsifiers in heavy oil/water systems.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Junji Takaya, Hirohiko Higashino, Ryuzo Takaya, Hiromi Sakaguchi, Jitsuo Tanoue, Takashi Higashide, Hisako Moriguchi, Masatoshi Nakao, Yasuyuki Takai
Summary: This study demonstrates the precise control of the curing reaction in order to electrospin epoxy and obtain continuous micro and nanofibers. By dissolving epoxy with triamine curing agent in a mixture of tetrahydrofuran and dimethylformamide solvents, a suitable solution for electrospinning was obtained. The working window for electrospinning was defined based on measurements of Fourier-transform infrared spectroscopy, steady shear viscosity, and oscillatory loss and storage shear moduli.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Wenlin Shuai, Shiwei Wang, Taotao Sun, Hongfeng Yin, Yu Zu, Gang Yao, Zhonghua Li, Zhaokun Qi, Mei Zhong
Summary: This study presents a novel linear dispersant (PSAF) with enhanced steric hindrance effect by incorporating phenolic groups, resulting in improved rheological characteristics of CWS. It provides guidance for the development of high-performance dispersants and understanding of the dispersal process of CWS.
Article
Materials Science, Paper & Wood
Jianshan Liao, Kim Anh Pham, Victor Breedveld
Summary: The viscosity of TEMPO-CNF suspensions decreases with higher homogenization pressure or number of homogenization passes, and higher surface charges. By developing a rheological flow index parameter, a clear and concise one-to-one relationship can be established between TEMPO-CNF rheology and fibril characteristics, which can be used for quality control and benchmarking.
Article
Physics, Applied
Chenjun Wu, Yuhai Xiang, Shaoxing Qu, Yihu Song, Qiang Zheng
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Chenjun Wu, Xinpeng Fan, Qingxu Zhang, Wei Wang, Yihu Song, Qiang Zheng
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2020)
Article
Mechanics
Xinpeng Fan, Huilong Xu, Chenjun Wu, Yihu Song, Qiang Zheng
JOURNAL OF RHEOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Fengyi Hou, Zhijie Xia, Yihu Song, Wei Chen, Qiang Zheng
Summary: This study examines the vulcanizates of IR/liquid isoprene rubber bimodal blends and finds that compared to pure IR networks, bimodal networks exhibit lower loss modulus and loss tangent during oscillational shear at low strain amplitudes, as well as reduced loading-unloading dissipation energy during cyclic tensile deformation at large strains, attributed to the weakened strain-induced crystallization (SIC). This work offers a new perspective for preparing rubber materials with balanced deformation resistance and mechanical hysteresis.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Mechanics
Yihu Song, Zhongjia Xu, Wanjie Wang, Qiang Zheng
Summary: Rubber nanocomposites undergoing dynamic shearing at large strain amplitudes exhibit the nonlinear Payne effect, which is characterized by decays of storage and loss moduli or by an overshoot of loss modulus near a critical strain amplitude. The study found that the filler in the nanocomposites amplifies the microscopic strain amplitude of the rubber phase, reducing the onset strain amplitude of the Payne effect. Partial removal of bound rubber by compounding paraffin swollen compounds can lower modulus and eliminate the overshoot of loss modulus.
JOURNAL OF RHEOLOGY
(2021)
Article
Materials Science, Composites
Xin Jiang, Yihu Song, Wanjie Wang, Qiang Zheng
Summary: This study introduces silica as a secondary filler in PEDOT:PSS/NR nanocomposites films to improve stability of electrical properties and decrease the change of Seebeck coefficient after deformation, offering a simple strategy for preparing stretchable conductors with enhanced stability.
COMPOSITES COMMUNICATIONS
(2022)
Article
Materials Science, Composites
Sohail Yasin, Munir Hussain, Qiang Zheng, Yihu Song
Summary: In this study, natural rubber nanocomposites were prepared using novel fillers and modifiers. Both the fillers and ionic liquid improved the mechanical properties of the material without affecting the dispersion of the nanoparticles during processing.
COMPOSITES COMMUNICATIONS
(2022)
Article
Polymer Science
Muchen Lu, Yihu Song, Qiang Zheng, Wanjie Wang
Summary: Copper chloride has an impact on the rheological response and crosslinking dynamics of rubber, causing intermolecular disassociation. The self-healing capability is closely related to crosslinking density and plays a significant role in balancing healing efficiency and tensile strength.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Materials Science, Composites
Munir Hussain, Sohail Yasin, Azim Uddin, Muchen Lu, Zheng Qiang, Yihu Song
Summary: This study investigates the use of cellulose nanocrystals and graphene as fillers in silicone rubber composites. The results show that the alignment of the fillers improves the mechanical and dielectric properties of the composites, resulting in high-performance materials with comparable dielectric constants to electroinsulating silicone rubber vulcanizates.
COMPOSITES COMMUNICATIONS
(2022)
Article
Mechanics
Zhaopeng Hu, Junwei Zhou, Yihu Song, Qiang Zheng, Wanjie Wang
Summary: This study investigates the effects of carbon black and short aramid fiber on the softening behavior of natural rubber composites, revealing the presence of Payne and Mullins effects. The results show that the viscoelastic matrix plays an important role in controlling the softening of the composite vulcanizates.
JOURNAL OF RHEOLOGY
(2023)
Article
Polymer Science
Yihu Song, Guangxu Wu, Junbiao Peng, Chunsheng Zhang, Dangling Wang, Qiang Zheng
Summary: Rubber processing industries are looking for ecofriendly activators to reduce usages of zinc oxide (ZnO) and emissions of volatile organic compounds. This study investigates the use of low cost deep eutectic solvents (DESs) for regulating vulcanization kinetics and mechanical behaviors of natural rubber (NR) gums. A highly active DES based on choline chloride/thiourea (1/3) pair (CCT) is found to effectively reduce the amount of ZnO activator used and improve the strength of vulcanizates at lower vulcanization temperatures. The crosslinking density and tensile strength of the vulcanizates can be independently regulated by the introduction of DESs and variation of vulcanization temperature, allowing for the customization of elasticity and dissipation properties in an energy-saving vulcanization approach.
Article
Polymer Science
Xinke Zhong, Yihu Song, Qiang Zheng
Summary: In this study, the Payne effect and Mullins effect of unfilled and silica filled butadiene rubber (BR) vulcanizates were systematically investigated. It was found that the critical strain amplitude for the onset of Payne effect during large-amplitude oscillation shear is closely related to the storage modulus in the linear viscoelastic region. In cyclic tension deformations, the recovery hysteresis energy and accumulating softening energy are involved in the local deformation of the rubber matrix, which is promoted by the filler phase. These findings provide insights for optimizing the performance of rubber nanocomposite products by controlling the nonideal network structure of the viscoelastic rubber matrix.
Article
Nanoscience & Nanotechnology
Xin Jiang, Junwei Zhou, Xinke Zhong, Zhaopeng Hu, Rongyan Hu, Yihu Song, Qiang Zheng
Summary: In this study, stretchable electromagnetic interference (EMI) shielding composite films were prepared using Li-TFSI-doped PEDOT:PSS nanoparticles and carboxylated styrene-butadiene rubber (XSB) latex. The films with doped PEDOT:PSS nanoparticles demonstrated higher EMI shielding efficiency (EMI SE) compared to traditional dopant ethylene glycol. The films containing 6 wt % PEDOT:PSS and 6 wt % Li-TFSI exhibited the highest EMI SE values of 50 dB and 30 dB (12.4 GHz) at 0% and 100% strains, respectively, among reported shielding composites except for those using liquid metal as the filler. This study provides a simple and environmentally friendly preparation method for the development of lightweight stretchable EMI shielding materials for flexible electronics applications in the future.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Multidisciplinary
Yihu Song, Guangxu Wu, Dangling Wang, Junbiao Peng, Chunsheng Zhang, Qiang Zheng
Summary: Dopamine modified silica is used to fill natural rubber vulcanizate for tailoring elasticity, strength and softening behaviors. The modified silica improves crosslinking density, filler dispersity, and tensile strength and extensibility of the nanocomposites, while weakening the dissipation and softening effects. The study contributes to the development of high-performance rubber nanocomposites with reduced volatile organic compounds emissions.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Mechanics
Huilong Xu, Lin Ding, Yihu Song, Wanjie Wang
JOURNAL OF RHEOLOGY
(2020)
