Advanced Materials Interfaces
·
2018
·Vol. 6
·期 1
·1801330
·
IF 4.834
Muhammad Waqas,Shamshad Ali,Weiqiang Lv,Dongjiang Chen,Bismark Boateng,Weidong He
Highly efficient and thermally stable polyethylene-hexagonal boron nitride/poly(vinylidene fluoride-hexafluoropropylene) (PE-BN/PVDF-HFP) bilayer separator with microporous structure is prepared, for the first time with a wet chemistry method. The incorporation of hexagonal boron nitride particles in PE matrix promotes the interfacial interaction between PE and PVDF-HFP layers to prevent separation of layers and supresses dendrite growth owing to the strong adsorption energy with polymers, large interactive surface area, and superior mechanical capability. The PVDF-HFP layer provides additional thermally stable backbone while its inherent hydrophilic property and highly porous structure improve the overall performance of the separator. The bilayer separator owns a high electrolyte uptake of 348% and a thermal shrinkage of 6.6% upon annealing at 140 °C for 1 h. The lithium iron phosphate/lithium cell with the as-prepared separator owns a high ionic conductivity up to 4.4 × 10 −4 S cm −1 , and a room-temperature capacity of 120 mAh g −1 at 2 C with a 95% capacity retention after 500 cycles and a capability of 108 mAh g −1 at 4 C. The PE-BN/PVDF-HFP separator is a promising alternative of traditional multilayer separators for high-performance lithium-ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Chinese Medicine
·
2024
·Vol. 19
·期 1
·1-20
·
IF 5.3
Lan Qin,Li Xue,Fang Jianhe,Yu Xinyu,Wu Zhanxuan E.,Yang Caiyun,Jian Hui,Li Fei
Background Prediabetes mellitus (PreDM) is a high-risk state for developing type 2 diabetes mellitus (T2DM) and often goes undiagnosed, which is closely associated with obesity and characterized by insulin resistance that urgently needs to be treated. Purpose To obtain a better understanding of the biological processes associated with both "spleen-dampness" syndrome individuals and those with dysglycaemic control at its earliest stages, we performed a detailed metabolomic analysis of individuals with various early impairments in glycaemic control, the results can facilitate clinicians’ decision making and benefit individuals at risk. Methods According to the diagnostic criteria of TCM patterns and PreDM, patients were divided into 4 groups with 20 cases, patients with syndrome of spleen deficiency with dampness encumbrance and PreDM (PDMPXSK group), patients with syndrome of dampness-heat in the spleen and PreDM (PDMSRYP group), patients with syndrome of spleen deficiency with dampness encumbrance and normal blood glucose (NDMPXSK group), and patients with syndrome of dampness-heat in the spleen and normal blood glucose (NDMSRYP group). Plasma samples from patients were collected for clinical index assessment and untargeted metabolomics using liquid chromatography-mass spectrometry. Results Among patients with the syndrome of spleen deficiency with dampness encumbrance (PXSK), those with PreDM (PDMPXSK group) had elevated levels of 2-hour post-load blood glucose (2-h PG), glycosylated hemoglobin (HbA1c), high-density lipoprotein cholesterol (HDL-C), and systolic blood pressure (SBP) than those in the normal blood glucose group (NDMPXSK group, P < 0.01). Among patients with the syndrome of dampness-heat in the spleen (SRYP), the levels of body mass index (BMI), fasting blood glucose (FBG), 2-h PG, HbA1c, and fasting insulin (FINS) were higher in the PreDM group (PDMSRYP group) than those in the normal blood glucose group (NDMSRYP group, P < 0.05). In both TCM syndromes, the plasma metabolomic profiles of PreDM patients were mainly discriminatory from the normal blood glucose controls of the same syndrome in the levels of lipid species, with the PXSK syndrome showing a more pronounced and broader spectrum of alterations than the SRYP syndrome. Changes associated with PreDM common to both syndromes included elevations in the levels of 27 metabolites which were mainly lipid species encompassing glycerophospholipids (GPs), diglycerides (DGs) and triglycerides (TGs), cholesterol and derivatives, and decreases in 5 metabolites consisting 1 DG, 1 TG, 2 N,N-dimethyl phosphatidylethanolamine (PE-NMe2) and iminoacetic acid. Correlation analysis identified significant positive correlations of 3α,7α,12α,25-Tetrahydroxy-5β-cholestane-24-one with more than one glycaemia-related indicators, whereas DG (20:4/20:5) and PC (20:3/14:0) were positively and PC (18:1/14:0) was inversely correlated with more than one lipid profile-related indicators. Based on the value of correlation coefficient, the top three correlative pairs were TG with PC (18:1/14:0) (r = − 0.528), TG with TG (14:0/22:4/22:5) (r = 0.521) and FINS with PE-NMe (15:0/22:4) (r = 0.52). Conclusion Our results revealed PreDM patients with different TCM syndromes were characterized by different clinical profiles. Common metabolite markers associated with PreDM shared by the two TCM syndromes were mainly lipid species encompassing GP, GL, cholesterol and derivatives. Our findings were in line with the current view that altered lipid metabolism is a conserved and early event of dysglycaemia. Our study also implied the possible involvement of perturbed bile acid homeostasis and dysregulated PE methylation during development of dysglycaemia.
研究领域:
医学
·
代谢组学
·
传统中医
✓ 已验证
DOI
高影响因子
Materials
·
2022
·Vol. 15
·期 14
·4875
·
IF 3.748
Liguo Xu,Yanwu Chen,Peijiang Liu,Jianghua Zhan
Commercial polyolefin separators exhibit problems including shrinkage under high temperatures and poor electrolyte wettability and uptake, resulting in low ionic conductivity and safety problems. In this work, core–shell silica-polyphosphazene nanoparticles (SiO2@PZS) with different PZS layer thicknesses were synthesized and coated onto both sides of polyethylene (PE) microporous membranes to prepare composite membranes. Compared to pure silica-coated membranes and PE membranes, the PE-SiO2@PZS composite membrane had higher ionic conductivity. With the increase in the SiO2@PZS shell thickness, the electrolyte uptake, ionic conductivity and discharge capacity gradually increased. The discharge capacity of the PE-SiO2@PZS composite membrane at 8 C rate was 129 mAh/g, which was higher than the values of 107 mAh/g for the PE-SiO2composite membrane and 104 mAh/g for the PE membrane.Keywords:composite membrane;SiO2@PZS nanoparticle;lithium-ion batteries
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2023
·
IF 9.9
Dongyu You,Zihao Feng,Jiaxin Wu,Zhihui Xiao,Xiuhua Li,Yigang Yu
This article tailored an octadecyl hydrophobic long chain modified series-connected aliphatic di-cation ionomer (named QPT), and developed a series of pore-filling composite anion exchange membranes (AEMs) QPT@PE with improved permselectivity (P), conductivity and mechanical properties using ultra-thin microporous polyethylene (PE) membrane with high mechanical strength as substrate, which well utilizes the strong interaction between the flexible hydrophobic long side chains and the pore wall to of the substrate resulting from their similar basic moieties. Interestingly, a composite membrane 15 % EtOH QPT@PE with suitable ionomer loading and blending aggregation structure simultaneously has significantly improved mechanical properties and best electrochemical properties with tensile strength of 58.6 MPa, elongation at break of 132.4 %, P reached 96.3 %, membrane area resistance low to 1.3 Ω cm 2 . Naturally, the composite AEM exhibits excellent performance in electrodialysis (ED) testing, including current efficiency of 94.1 %, salt flux of 85.6 mg m −2 s −1 , and low energy consumption of 1.50 kWh kg −1 NaCl. All ED performance indicators of 15 % EtOH QPT@PE are superior to those of commercial AMX, and its preparation cost is less than $30.0 m −2 , indicating that it has great potential in long-term ED seawater desalination applications.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2026
·
IF 3.1
Fu Chenchao,Zhang Run,Liu Mingfei,Hua Zetian,Jiang Lin,Xue Ping,Cai Jianchen,Jiang Jinyun
The temperature rise caused by shear action during melting for high molecular polymer is widespread and difficult to control, especially for the co-rotating twin-screw extrusion (CRTSE) process. Considering the very small gap between the screw and the barrel, it is difficult to in-line measure and control the value of materials’ temperature along the extrusion direction. Consequently, a co-rotating twin-rotor mixing apparatus with a high-precision temperature sensor is employed to explore the temperature variation of polyethylene (PE) with different average molecular weights (M w ) from solid to melt, similar with the CRTSE process, but the material will not be conveyed forward. The experiment’s result indicates that a higher rotor speed and a lower meshing clearance result in a higher temperature rise. Meanwhile, unexpectedly, an interesting experimental phenomenon is observed: the temperature rise caused by shear action in high-viscosity PE increases with the rotor speed, while it enlarges initially and then stabilizes in low-viscosity PE as the increased rotor speed. Therefore, it is speculated that the temperature rise during the processing strongly depends on the viscosity. Simulation studies based on Ludovic software by actively varying the consistency index and power-law exponent confirm the correctness of the experimental conjecture under a wider screw speed and viscosity range. This study has theoretical and practical implications for a deeper understanding of the temperature rise caused by shear action in polymeric materials during extrusion.
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 4
·e70183
·
IF 3.4
Shiji Gao,Chong Yu,Xiaopei Li,Enming Huang,Shiyu Wang,Xuanwei Zhang,Yongjie Zhang
Recycling of discarded polyolefins is vital to reducing dependence on oil, promoting resource sustainability, and achieving a closed-loop economy. Direct recycling without time- and labor-consuming sorting is an efficient and economical approach to the treatment of polyolefins from mixed waste streams. However, the immiscibility of different polyolefins would lead to severe phase separation and inferior properties of generated blends. To solve this problem, an acyloxyimide-based initiator, namely N -acetoxy-phthalimide (NAPI), was utilized to in situ generate graft copolymers and grafted/functionalized polyolefins via a simple, one-step, and scalable reactive blending approach. Compared to traditional peroxide initiators, NAPI is a more efficient H-abstracting agent while avoiding undesired side reactions (β-scission and cross-linking). The in situ resultant graft copolymers and grafted/functionalized polyolefins serve as efficient compatibilizers that considerably enhance the compatibility of binary isotactic polypropylene ( i PP) and polyethylene (PE) blends by reducing interfacial tension and, consequently, improving the mechanical properties of mixed polyolefin blends. The presence of i PP-PE graft copolymer was solidly evidenced by infrared spectroscopy analyses. Compared to the control i PP/PE blend, the elongation at break, impact strength, and bending modulus of the modified i PP/PE blend increased by 471.7%, 21.5%, and 45.7%, respectively.
研究领域:
材料科学
·
环境工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH INNOVATIONS
·
2024
·
IF 0
Hongdan Hu,Yaowen Wang
The experiment carried out halogen-free flame retardant modification treatment on polyethylene-based wood-plastic composite materials. The results showed that after adding flame retardant, the ignition time of the material increased to 76 seconds, an increase of 22 seconds. At combustion temperatures above 530°C, only a small amount of the material’s residue continues to evaporate. When the temperature rises to 800°C, the difference in the residual carbon content of the samples gradually becomes larger. The residual carbon content of sample 1# is only 10.1%. At this time, the residual carbon content of samples 7#, 8# and 9# are respectively Reaching 27.12%, 27.09% and 25.60%. The above results show that the thermal stability of composite materials has been greatly improved after adding nano-flame retardants, providing new ideas and methods for the application of flame retardant and halogen-free flame retardant materials of wood-plastic composites.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2021
·
IF 3.935
Hui Jiang,Shi-Jun Yin,Xu Wang,Min Lu,Hao Zhang,Feng-Qing Yang
Two liposomes , including 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC) + 1,2-dimyristoyl- sn -glycero-3-phosphoethanolamine (PE) + cholesterol (Chol) (DSPC/PE/Chol liposomes) and soybean lecithin (SPC) + PE + Chol (SPC/PE/Chol liposomes), were prepared and fixed on the inner wall of capillary column by using the adhesion of polydopamine (PDA) membrane and the cross-linking property of glutaraldehyde (GA). The immobilized liposome capillary column (ILCC) has good repeatability and stability based on the electrophoretic mobility of analyte . A CE method based on the immobilized liposome capillary column chromatography (ILCCC) was successfully developed to study the retention behavior of drugs on ILCC, and the logarithm of retention factor (log k ) of neutral and ionic drugs were determined. The results show that the log k measured by the ILCCC based on two liposomes have a good linear fitting (R 2 = 0.86). Moreover, the linear relationship between ILCCC system and other related research systems (octanol-water system and immobilized artificial membrane (IAM)) was analyzed, and the results indicate that SPC/PE/Chol ILCCC, DSPC/PE/Chol ILCCC and IAM systems have good fitting results, R 2 values are 0.86 and 0.78, respectively. In addition, the normalization coefficients of ILCCC and IAM systems obtained by the linear free energy relationship (LFER) analysis are close and the d value is small. In short, the ILCCC is a simple and feasible method for studying drug membrane permeability.
研究领域:
分析化学
·
药学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Research
·
2021
·Vol. 15
·期 1
·564-572
·
IF 8.897
Wang Wen,Wang Shuang,Xiang Chenxue,Xue Dan,Li Mufang,Liu Qiongzhen,Piao Longhai,Wang Dong
As a new favorite in the field of smart materials, smart windows, with visual stimulus sensing functions, have attracted extensive attention for their high transparency, sensitive response to environmental stimulus, and reversible changes in light transmittance. In this paper, the PVA- co -PE nanofiber film, which was completely opaque like paper, was used as filling phase and reacted with water-soluble N-vinyl-2-pyrrolidone (NVP) by photopolymerization to produce a flexible transparency polyvinyl pyrrolidone/spraying PVA- co -PE nanofiber films (PVP/SPNFs) composite film. Among them, the small size effect of PVA- co -PE nanofibers played a pivotal role in improving the film’s transparency. Nevertheless, the PVP’s reversible adsorption-desorption behavior of water molecules made its refractive index change dynamically and reversibly, which led to the visual transition of composite film from transparent to opaque just like that of electronic smart windows. Additionally, the reversible transition rate of film’s transparency can be effectively regulated by the nanofiber stack structure. This new design of transparency visualization transforms composite film in response to humidity, innovates the electrically controlled smart windows on energy and realizes the effective utilization of natural resources such as water and humidity, which has a great application prospect in the field of flexible optoelectronic devices, intelligent buildings, and smart writing.
研究领域:
材料科学
·
智能材料
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2025
·
IF 4.3
Cheng Liu,Yongliang Ding,Lieshun Cai,Mang Wu,Zhongkai Wang
Biobased closed-loop recyclable olefin-like materials are environmentally friendly and have promising application prospects. However, such materials are scarce, and especially the olefin-like materials developed so far are limited to polyester materials. Therefore, developing nonpolyester biobased olefin-like materials is of significant interest. In this study, a castor oil-based poly(ester amide) (PEA) with polyethylene-like properties and closed-loop recyclability was successfully prepared. The obtained PEA materials exhibit thermal and mechanical properties comparable to polyethylene and surpass those of previously reported linear poly(ester amide)s. Notably, PEA can be completely hydrolyzed to its precursors, N1,N10-bis(3-hydroxypropyl) decanediamide (DSE) and sebacic acid (SA), with yields of 73.1–75.8 and 92.8–96.2%, respectively. Further experiments demonstrated that repolymerization of recovered DSE and SA produced REPEA materials with mechanical properties equivalent to the original polymer. This study achieves closed-loop recycling for biobased linear nonpolyester materials, which offers a novel approach to design olefin-like sustainable materials.
研究领域:
材料科学
·
有机化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Ao Sun,Xingxu Gao,Ling Yang,Xingyu Yu,Jing Niu,Qian Chen,Yaozong Bai,Gaojun Liu,Haoyu Dong,Lei Sheng,Tao Wang,Xianli Huang,Jianping He
As integral constituents of sodium ion batteries (SIBs), separator not only segregate positive and negative electrodes but also wield significant influence over electrochemical performance enhancement. Here, we present a hydroxyapatite nanowires composite separator (N-HAP@PE) by blade coating, boasting exceptional Na-ion transport capacity and high safety. The N-HAP@PE separator features a crosslinked ceramic network structure coating endowed with polar functional groups (-OH), providing excellent electrolyte wettability. Its compatibility with ester-based electrolytes promotes efficient transport of Na-ion between the cathode and anode, increasing the ion conductivity (0.215 mS cm −1 ) and a Na-ion transference number (0.62). Importantly, the sodiophilic HAP-NWs coating enables highly reversible Na plating and stripping while inhibiting dendrite formation. Ultimately, the N-HAP@PE separator assembled with NaNi 1/3 Fe 1/3 Mn 1/3 O 2 cathode (areal density: 13.24 mg cm −2 ) and hard carbon anode (areal density: 6.3 mg cm −2 ), exhibits excellent capacity retention (85 %) after 200 cycles at 2C. This offers a new approach for the development of high-performance and low-cost sodium-ion batteries.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL RESEARCH IN TOXICOLOGY
·
2025
·
IF 3.8
Xiaomin Ye,Peiqu Zhong,Qiongfang Chen,Dongmei Zhou,Jieyu Luo,Youcai Liang,Jiayuan Zhang,Lijian Zhao
The widespread use of perfluorooctanesulfonic acid (PFOS) has raised concerns regarding its potential on pregnant women, particularly in relation to the development of pre-eclampsia (PE). This study investigates the impact of PFOS exposure on the LncRNA/Rnd3 axis in pregnant mice and its association with trophoblast cell functions in PE. Bioinformatics analysis revealed PFOS-related gene alterations in PE, with pathways enriched in apoptotic signaling and cytokine interactions. Experimental findings showed the downregulation of Oip5os1 and Rnd3, along with the upregulation of miR-155, affecting trophoblast behavior. Animal experiments confirmed that PFOS-induced gene expression changes are linked to PE progression. PFOS exposure impairs trophoblast proliferation and migration via the Oip5os1/miR-155/Rnd3 axis, contributing to PE development.
研究领域:
毒理学
·
生殖生物学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）