APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Hongbing Zhang,Sijie Wang,Anqi Wang,Yuli Li,Feng Yu,Yong Chen
Recently, highly abundant natural materials have been used in the fields of energy storage because of their environmental friendliness and low cost. However, use of some natural materials like cellulose as host matrices of gel polymer electrolytes (GPEs) is challenging owing to the strong intra- and inter-molecular hydrogen bonding. Herein, a green GPE film was prepared by chemically grafting soft chain-polyethylene glycol (PEG) onto the backbone of cellulose. The introduction of PEG significantly improved the toughness of cellulose from 118 × 10 3 to 270 × 10 3 kJ m −3 , as well as raised the wettability in carbonate-based liquid electrolyte solutions from 22.6% to 141.7%. The first cycle coulomb efficiency stayed above 90%. The capacity retention of LiFePO 4 /Li batteries assembled with the as-obtained GPE reached 80.3% after 300 cycles at 0.2 C. In sum, the as-obtained cellulose-based GPEs look promising to replace separators and liquid electrolytes in Li-ion batteries.
研究领域:
储能
·
高分子科学
·
电化学
·
材料科学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2014
·Vol. 32
·期 9
·1234-1242
·
IF 1.42
Lin Da-wei,Zhong Zhi,Tang Yi-ren,Gao Yang,He Ya-ning,Guo Bao-hua,Xu Jun
The poly(ethylene glycol) (PEG, with M
w 2000)-urea inclusion compound (IC) crystallized at high temperature region showed two typical orientations, flat-on and edge-on crystals. 2D-XRD and polarized FTIR spectroscopy revealed that the PEG chains within urea channels were perpendicular to the substrate in flat-on oriented crystals, while PEG chain axes were parallel to the substrate and lay along the growth direction in the edge-on crystals. FTIR absorption bands of PEG in the ICs are sensitive to orientation of the crystals. A scheme of PEG chain packing in the urea IC channel was proposed, which could explain the orientation of the crystal nucleus causing the two types of morphologies. Furthermore, functioning of PEG2000 chain end with analine had significantly influence on the morphology and orientation of the inclusion compound crystals, due to the defects caused by large terminal groups included in the urea channel.
研究领域:
高分子科学
·
材料化学
·
晶体学
·
超分子化学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 2.8
Hongdan Bao,Kaiyuan Huo,Jing Zou,Hao Chen,Guangyu Chen,Hengrui Zhang,Yan Guo,Na Li,Weidong Xia
Adhesives are essential in diverse industrial fields, and bioadhesives play a critical role in medicine for minimally invasive tissue repair and device integration. However, existing systems, particularly polyethylene glycol (PEG)-based adhesives, often suffer from brittleness, inadequate performance under extreme temperatures, and limited substrate versatility. To overcome these challenges, we developed a novel polyphenol-PEG adhesive platform through citric acid (CA)-mediated liquid–liquid phase separation (LLPS). This process, driven by CA-regulated hydrogen bonding as confirmed by XPS, FTIR, UV spectroscopy, and solution studies, produces adhesives with exceptional properties: peel strength near 15 N/cm, shear strength exceeding 4 MPa on hydrophilic substrates, rapid adhesion within 10 s, and operational stability from liquid nitrogen temperatures up to about 150°C, maintaining over 1 MPa shear strength at 200°C exposure. The adhesive demonstrates effective sealing of fractured bone, adhering to wet biological tissues and serving as an eco-friendly solution for restoring cultural artifacts. This study establishes the condensate formed by the CA-regulated LLPS process in the polyphenol-PEG system as a novel, ultra-robust adhesive suitable for demanding biomedical and industrial applications.
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Meisi Chen,Mengjia Li,Feng Zhang,Xingbang Hu,Youting Wu
With the catalytic induction of ethylene glycol (EG), anhydrous N,N-dimethylethanolamine (DMEA) shows CO2 absorption performance via chemical binding and physical storage under normal pressure. Among the absorbents, pure DMEA and EG can hardly absorb CO2 directly, but when the zwitterionic alkylcarbonates are formed between CO2 and DMEA-EG, which can be characterized by 13C NMR and FTIR spectroscopy, the absorption rate of CO2 is improved. With the increase in the CO2 loading as the mass fraction of EG in DMEA–EG, 80 wt % EG captures up to 0.72 mol/mol at 293 K and 101 kPa via chemical binding and physical storage. The amount that is chemically bound and physically stored is directly dependent on temperature; within the range of 293–323 K, an absorption–regeneration cycle can be formed in a closed vessel because the zwitterion DMEA–EG–CO2 is unstable at higher temperatures. In other words, DMEA–EG–CO2 can be easily regenerated upon appropriate depressurization or heating. The corresponding thermodynamic calculations prove that the regenerative energy of DMEA–EG–CO2 is −27.33 kJ/mol, far less than that of other absorbent systems.
研究领域:
化学工程
·
环境科学
·
物理化学
·
能源技术
·
气体分离
✓ 已验证
DOI
高影响因子
Nanoscale
·
2026
·
IF 5.2
Anqi Zhao,Mengyun Hu,Jie Li,Xinyu Gu,Changqing Ye,Yukou Du
The application of direct ethylene glycol fuel cells (DEGFCs) faces challenges such as sluggish anode reaction rates and incomplete ethylene glycol oxidation. To tackle these issues, we adopted a straightforward chemical reduction approach for the synthesis of sea urchin-like PdAg nanospheres (PdAg NSs). Concurrently, we investigated the influence of varying Pd/Ag molar ratios on the ethylene glycol oxidation reaction (EGOR). Our results demonstrate that sea urchin-like nanospheres with distinct morphological features can be successfully synthesized with different Pd/Ag ratio combinations. Electrochemical analyses reveal that the rational design of bimetallic catalysts can enhance catalytic activity, which is primarily attributed to the ligand effect. Notably, Pd4Ag NSs exhibit the highest mass activity of 5.98 A mgPd−1, significantly outperforming commercial Pd/C catalysts. Moreover, Pd4Ag NSs also demonstrate superior electrochemical stability in both chronoamperometry (CA) and cyclic voltammetry (CV) tests. In addition, the faradaic efficiency (FE) of the cleavage products was evaluated. A volcano-type relationship was observed between the FE of cleavage products and the applied potential. The results indicate that 0.96 V vs. RHE is the optimal potential for the formation of cleavage products, at which the corresponding FE reaches 15%. This study not only provides insights into the synthesis of high-stability Pd-based nanomaterials but also reveals the relationship between potential and oxidation products in the ethylene glycol oxidation reaction (EGOR).
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Pharmacology
·
2026
·
IF 5.4
Chen Bao,Decai Wang,Chao Liu,Meizhou Zhang,Qian Liu,Jiannan Hu,Yuzhou Wu,Shuyun Xu
Ferroptosis is an iron-dependent programmed cell death mechanism triggered by the accumulation of lipid-based reactive oxygen species (ROS). It is closely implicated in the pathogenesis of asthma. Liproxstatin-1 (LIP-1) is a ferroptosis inhibitor that is beneficial for treating neutrophilic asthma. However, low water solubility, limited blood concentration, and poor mucus permeability and biocompatibility limit the therapeutic efficacy of LIP-1. In this study, we successfully constructed polydopamine–polyethylene glycol–LIP-1 nanoparticles (PDA-PEG-LIP-1 NPs) for the treatment of neutrophilic asthma. Inhalation of PDA-PEG-LIP-1 NPs effectively inhibited lipopolysaccharide (LPS)- and interleukin (IL)-13-induced ferroptosis by alleviating lipid peroxidation and ROS production and chelating free ferrous ions (Fe 2+ ). In addition, results from asthma mouse models demonstrated that inhalation of PDA-PEG-LIP-1 NPs could overcome the limitations of LIP-1 and effectively inhibit ferroptosis. This research suggests that PDA-PEG-LIP-1 NPs are an effective, practical, and safe option for treating neutrophilic asthma.
✓ 已验证
DOI
PubMed
高影响因子
ANALYST
·
2012
·Vol. 138
·期 4
·1204-1211
·
IF 4.23
Yanying Wu,Lili Cui,Ying Liu,Guojun Lv,Tao Pu,Dajun Liu,Xingquan He
A dopamine (DA) sensor based on a methoxypolyethylene glycol (MPEG) polymer covalently modified glass carbon electrode (GCE) was fabricated by an electroadsorption method. The electrochemical behavior of the sensor towards the catalytic oxidation of DA in pH 5.0 phosphate buffer solution (PBS) was investigated by cyclic voltammetry. The modified electrode obviously enhanced the current response and decreased the overpotentials for the oxidation of DA. Using differential pulse voltammetry, the sensor gave a linear response to DA over the concentration range of 2.0–140 μM with a detection limit (S/N = 3) of 4.68 × 10−8 M. It was found that MPEG can complex DA through hydrogen bonding interaction between ethylene oxide units of the polymer and the protonated dopamine in acidic PBS and preconcentrate it in the film, which improved the detection limit and sensitivity of DA. The DA sensor exhibits good sensitivity, selectivity and stability, and has been applied for the determination of DA in dopamine hydrochloride injection solution.
研究领域:
分析化学
·
生物传感器
·
电化学
·
药物分析
·
分子诊断
·
生物医学工程
·
纳米医学
✓ 已验证
DOI
高影响因子
Polymer Chemistry
·
2023
·Vol. 15
·期 3
·193-201
·
IF 4.6
Yanqiu Du,Haidong Li,Yang Jiang,Yunchao Xiao,Jipeng Guan,Xuejie Liu,Nan Yan
Nanocrystal (NC) superlattices assembled from functional inorganic nanoparticles have received extensive attention due to their intriguing integrated properties and various potential applications arising from strong plasmon coupling interactions. However, the controllable assembly of colloidal NCs in an aqueous solution, especially for dynamical sequential growth, still remains an enormous challenge. Herein, we develop a robust strategy to realize the precisely controllable self-assembly and sequential oriented growth of gold nanoparticles (AuNPs) tethered to poly(ethylene glycol) (PEG) polymeric ligands in a salt solution through the dehydration degree of PEG ligands induced by the Hofmeister effect, thus yielding two-dimensional (2D) monolayer hexagonally-packed superlattices, three-dimensional (3D) single crystals with face-centered cubic (FCC) lattices and adjustable layer numbers, and multiply twinned superlattices depending on the initial salt concentrations. This finding will offer an efficient and robust approach for preparing functional superlattice materials with predictable internal packing symmetry and adjustable dimensions.
研究领域:
纳米生物学
·
胶体化学
·
生物材料学
·
自组装技术
·
纳米医学
·
高分子物理
·
界面科学
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2021
·
IF 1.504
Zhuodong Liu,Zhengguang Heng,Haoruo Zhang,Ji Zhou,Yang Chen,Mei Liang,Huawei Zou
A series of high comprehensive performance composite phase-change materials (PCMs) were designed and prepared by a physical blending and evaporation method. Cellulose nanofibers (CNF) were introduced as supporting materials to keep the shape of polyethylene glycol (PEG) stable during the phase-change process, and expanded graphite (EG) was used to synergize with the PEG to enhance the infrared thermal stealth performance. The comprehensive performance and structure–property relationships of the composite PCMs were investigated by means of various characterization techniques. The CNF30/PEG69/EG1 composite exhibited the best comprehensive performance: a high PEG melting enthalpy of 144.3 J/g due to a high crystallinity of the PEG, good thermal stability, a shape stabilization effect and superior IR attenuation performance. The EG was proved to be an effective supporting material which contributed to the enhancement of the crystallinity of PEG, and played an important role as a nucleating agent in the crystallization process of the PEG. The synergistic effect of PEG and the small amount of EG gave the composites excellent infrared stealth performance.
研究领域:
材料科学
·
纳米技术
·
热工学
·
红外技术
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2014
·
IF 0.74
Yunyan Xue,Dandan Ma,Tianzhu Zhang,Siyan Lin,Shengnan Shao,Ning Gu
In this study, a series of comb-like methoxy polyethylene glycol (MPEG) functionalized polyurethanes (PUs) (PU–g–MPEG) were successfully prepared via ‘click’ chemistry and polyaddition reaction. The copper catalyzed Huisgen 1,3-dipolar cycloaddition was firstly carried out between 3,5-bis(hydroxymethyl)-1-propargyloxybenzene (PBM) and methoxy polyethylene glycol azide (MPEG–N3) to obtain MPEGylated diol PBM (MPEG–PBM). Then, the comb-like PUs having MPEG located on the backbones (PU–g–MPEG) were synthesized through the polyaddition of MPEGylated diol PBM and hexamethylene diisocyanate (HDI). Fourier transform infrared (FTIR), 1H NMR spectroscopy, size exclusion chromatography (SEC), and thermo gravimetric analyses (TGA) were used to characterize these synthesized MPEG-functionalized comb-like PUs (PU–g–MPEG). Compared with PU without MPEG grafts, PU–g–MPEG show a better wettability.
研究领域:
高分子化学
·
材料科学
·
有机合成
·
表面化学
✓ 已验证
DOI
高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
·
2017
·Vol. 20
·期 6
·1281-1290
·
IF 1.45
Zhang Qian,Li Sha,Zhang Fanglei,Wei Xilian,Liu Min,Liu Jie,Sun Dezhi
The self-assembly behaviors of mixtures of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) and didodecyl dimethylammonium bromide (DDAB) in polyethylene glycol 200 (PEG 200) and in water were investigated by surface tension, conductivity, steady-state fluorescence and dynamic light scattering (DLS) methods. The results show that the oppositely charged binary surfactant system can form micelles in PEG 200; the critical micellization concentration (CMC) decreases for the binary system versus those of either surfactant alone. Although there is no charge screening in the PEG 200 system, the CMC values significantly increase and the system does not precipitate or show turbidity at any proportion of AOT to DDAB, while a multiphase composition gap exists in water due to the strong electrostatic attraction. It is speculated that the weak polarity of PEG 200, the decreased solvophobic interaction between the alkyl chain and PEG 200, and the loose structure of the resulting micelles might explain the experimental phenomena. Observed from the values of the interaction parameter, it is found that there are a strong attractive interaction and a synergistic effect between AOT and DDAB in aqueous solution, in comparison, the synergy between them in PEG 200 is very weak.
研究领域:
胶体与界面化学
·
软物质物理
·
溶液化学
✓ 已验证
DOI
高影响因子
CATALYSIS TODAY
·
2018
·
IF 4.667
Dawang Chu,Chen Zhao
The effective and selective conversion of cellulose to valuable fuels and chemicals is highly attractive. In this paper, we prepared a catalyst with the adjacent surface Cu° and oxygen-deficient WO x (2 < x < 3) species by reduction of CuWO 4 precursor, and such catalyst coupled with Ni/activated carbon (AC) attained high yield (71 wt%) and good cycling performances in catalyzing one-step hydrothermal conversion of cellulose to ethylene glycol (EG), highly superior to the performances on physically mixed Ni/C, Cu/C and WO 3 . The increased Cu doping amounts led to a higher ratio of the lower valence state W (V or IV) to the high valence W(VI) as indicated by XPS, XRD, and TPR-H 2 analyses. The oxygen vacancies on the hydrogen-reduced CuWO 4 sample dramatically increased, probably due to the benefits from the substantial dissociated H• on the neighboring Cu° center. The EG yields from cellulose are shown to be proportional to the concentrations of oxygen vacancies on WO x , which catalyzes the important elementary retro-aldol step reaction via adsorbing C 6 sugar intermediates in a specific way. It is inferred that Cu introduction is mainly used to create more oxygen vacancies on the WO x surface that helps adsorbing oxygenates, while Ni fast hydrogenates of hydroxyacetaldehyde to EG and avoids coking, constructing a multi-functional synergistic catalytic process from converting of cellulose to EG in the high-temperature water
研究领域:
催化化学
·
生物质转化
·
绿色化学
·
材料化学
·
能源化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）