COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Kuan Chen,Zhongxin Xie,Liangyong Chu,Jian Wu,Liming Shen,Ningzhong Bao
In this paper, we proposed a micro-riveting method using the wood fibers in the wood plastic composites (WPC) to effectively enhance the interfacial bonding strength between the epoxy coating and polyethylene (PE) -based WPC. The WPC surface with wood fibers partially embedded in the PE matrix was prepared using a simple solvent swelling and polishing method. Epoxidized Cardol having a long and hydrophobic chain was modified on the surface of the exposed wood fibers to improve the water-resistance and chemical reactivity of the wood fiber surface. Fourier transforms infrared (FT-IR) spectra, X-ray photoelectron spectroscopy (XPS), contact angle, confocal microscopy , and scanning electron microscope (SEM) have been used to characterize the composition and morphology of the surface structures. A pull-off test has been used to evaluate the interface bonding strength, which increased from 1.88 to 5.27 MPa. This constitutes the highest performance among all the non-plasma surface treatment reports (30 % higher than the highest bonding strength reported in the literature and comparable to plasma-based surface treatments). The epoxy-WPC interface showed excellent water resistance after immersing in sodium chloride (NaCl) solution (3.5 wt%) for 60 days. The proposed micro-riveting method is of high significance for WPC and may contribute to the interface adhesion enhancement of other polymer composites .
研究领域:
材料科学
·
复合材料工程
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产品关联
DOI
高影响因子
RADIATION PHYSICS AND CHEMISTRY
·
2012
·
IF 1.227
Desheng Su,Wenqi Niu,Sheng Liu,Chengyin Shen,Chaoqun Huang,Hongmei Wang,Haihe Jiang,Yannan Chu
Photoemission electron attachment ion mobility spectrometry (PE-EA-IMS), with a source of photoelectrons induced by vacuum ultraviolet radiation on a metal surface , has been developed to study electron attachment reaction at atmospheric pressure using nitrogen as the buffer gas . Based on the negative ion mobility spectra, the rate constants for electron attachment to tetrachloromethane and chloroform were measured at ambient temperature as a function of the average electron energy in the range from 0.29 to 0.96 eV. The experimental results are in good agreement with the data reported in the literature.
研究领域:
物理化学
·
分析化学
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产品关联
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2023
·
IF 5.6
Yong Hong Wang,Weike Zhao,Qiuhua Zhang,Junwu Liu,Panyan Zhu,Lei Yao,Gan Chen,Pingli Liu
Polyethylene (PE) - base nanocomposites composed of high density polyethylene (HDPE) as matrix and coating-modified palygorskite clay (MAT) as functional filler and fire resistance was prepared by melt blending method. The MAT powder was prepared by solution heterogeneous precipitation method combined with spray drying processes. The microstructure observation shows that the particle size of the obtained MAT powder was concentrated and even. Both mechanical properties and thermal behaviors of the nanocomposites containing MAT were compared to those with commercial ceramic fillers (naming as S type flame retardants) at the same addition mass ratios level. The added MAT mass fractions in the composite were defined as 5 wt%, 10 wt%, 15 wt%, and 20 wt%, respectively. When the addition amount of MAT is 15 wt%, the impact toughness of MAT/HDPE composites approaches 13.41 kJ/m 2 , which is better than that with commercial fillers. The added fractions of MAT increases to 19.1 wt%, and the elongation at break of nanocomposite reaches 495%, which is much higher than that with S type flame retardants . The differential scanning calorimeter (DSC) test results show that MAT can enhance the melting point range of HDPE and improve the thermal stability of the composite. The LOI (limiting oxygen index) results confirm that MAT can effectively improve the flame retardancy of HDPE composites, and the LOI value increases with the MAT addition. The enhancement of mechanical and thermal properties of the PE-base composite is essentially originated from the uniform dispersion of MAT in polymer matrix and the strong interactions with inorganic – organic interface compatibility.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
FREE RADICAL RESEARCH
·
2024
·
IF 3.6
Xue Peng,Xi Tan,Li Dai,Wei Xia,Zhao Wu
This research investigates the interplay between Reactive Oxygen Species (ROS) and Apelin (APLN) in regulating autophagy, with implications for placental cell senescence and apoptosis in pre-eclampsia (PE). We manipulated APLN expression using sgRNA to study its effects on ROS levels and subsequent cellular responses. Our findings reveal that APLN overexpression elevates ROS production, accelerating cellular senescence and apoptosis. In contrast, silencing APLN enhances autophagy, thereby diminishing cellular aging and apoptosis. These outcomes were confirmed in vitro and in vivo experiments, establishing a causative relationship between ROS-mediated APLN modulation and altered placental cell dynamics in PE. The results suggest potential therapeutic targets within the ROS and APLN pathways to alleviate detrimental changes in the placenta, offering new strategies for the clinical management of PE. This study emphasizes the crucial role of autophagy in placental health and sets the stage for future investigations into therapeutic interventions for pregnancy-related complications.
研究领域:
妇产科学
·
分子生物学
·
细胞生物学
·
药理学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Fangzhou Hu,Xin He,Weize Lv,Yong Fang,Guodong Jiang,Yucai Shen
Manganese phytate decorated kaolinite (PA-Mn@Kaol) was synthesized as a novel flame retardant synergist in combination with piperazine pyrophosphate (PAPP) for polyethylene (PE). It demonstrated that the addition of PA-Mn@Kaol significantly reduced the total heat release, peak heat release rate, and total smoke production. Notably, the fire growth index (FGI) of PE/PAPP/PA-Mn@Kaol composites decreased by 66.7% relative to the PE/PAPP composite, and the PE/PAPP/PA-Mn@Kaol composites had great advantages in terms of FGI and fire performance index compared to other PE/intumescent flame retardant systems reported in the literature. Moreover, the gas and condensed phases fire retardant mechanisms of the PE/PAPP/PA-Mn@Kaol composite were explored. This study presented a viable approach for designing synergistic fire retardants, effectively enhancing the fire safety performance of PE.
研究领域:
材料科学
·
消防安全
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Wenxin Shi,Qingmei Su,Xuan Li,Huayu Li,Siyu Wang,Weihao Shi,Liming Wang,Yinyin Song,Shan Yang,Gaohui Du,Miao Zhang,Wenqi Zhao,Bingshe Xu
The development of composite solid electrolytes with high ionic conductivity and superior interfacial stability is crucial for practical all-solid-state lithium metal batteries (ASSLMBs). Herein, a high-performance bilayer composite separator is designed by integrating Li0.33La0.557TiO3 (LLTO) nanofibers into a poly(vinylidene fluoride) (PVDF) matrix, which is coated onto a polyethylene (PE) substrate. The interconnected LLTO nanofibers construct three-dimensional continuous ion-conducting pathways and reduce the crystallinity of the polymer matrix, endowing the optimized separator (with 60 wt % LLTO) with a high ionic conductivity of 5.17 × 10–4 S cm–1, a large lithium-ion transference number (tLi+= 0.81), and a wide electrochemical stability window up to 4.87 V. The unique bilayer architecture, where the LLTO/PVDF layer facilitates rapid Li+ transport and the PE layer ensures interfacial compatibility, enables stable lithium plating/stripping over 500 h and yields a high critical current density of 2.9 mA cm–2. Furthermore, the robust mechanical properties of the separator ensure uniform lithium-ion flux and effectively resist lithium dendrite penetration. When applied in NCM811/Li metal battery, this modified solid-state electrolyte separator enabled remarkable cycling stability (89.8% capacity retention after 200 cycles at 5C) and exceptional rate performance (115.4 mAh g–1 at 5C). This work provides a feasible and effective strategy for designing composite separators toward high-energy-density and dendrite-free ASSLMBs.
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产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2017
·
IF 2.429
Dongri WANG,Yongqing ZHAO,Shiyong YU
A series of cerium sulfides were successfully prepared using commercially available nanoscale CeO 2 as precursor, anhydrous Na 2 CO 3 as dopants, CS 2 as sulfur source, under 600–800 °C, respectively. Properties of samples were investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and spectrophotometry. The results showed that corresponding γ-Ce 2 S 3 with small size was obtained by using nanoscale CeO 2 as precursor; pure phase γ-Ce 2 S 3 could be obtained under low temperature of 700 °C. Coloring properties of γ-Ce 2 S 3 obtained under 800 °C were studied by researching γ-Ce 2 S 3 /PE and γ-Ce 2 S 3 /PVC composites, respectively. The results showed that satisfied coloring effects to PE and PVC were obtained by using 0.5 phr and 0.2 phr γ-Ce 2 S 3 , respectively.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2016
·
IF 3.902
Wenwen Wang,Hao Zhang,Zhifeng Zhang,Mengying Luo,Yuedan Wang,Qiongzhen Liu,Yuanli Chen,Mufang Li,Dong Wang
In this study, poly(vinyl alcohol- co -ethylene) (PVA- co -PE) nanofibrous membrane was activated by sodium hydroxide and cyanuric chloride, and then the activated membranes were functionalized by 1,3-propanediamine, hexamethylenediamine and diethylenetriamine to be affinity membranes for bilirubin removal, respectively. The chemical structures and morphologies of membranes were investigated by SEM, FTIR and XPS. And the adsorption ability of different amine-functionalized nanofibrous membranes for bilirubin was characterized. Furthermore, the effects of temperature, initial concentration of bilirubin, NaCl concentration and BSA concentration on the adsorption capacity for bilirubin of diethylenetriamine-functionalized nanofibrous membrane were studied. Results indicated that the adsorption capacity for bilirubin of diethylenetriamine-functionalized nanofibrous membrane could reach 85 mg/g membrane when the initial bilirubin concentration was 200 mg/L while the adsorption capacity could be increased to 110 mg/g membrane if the initial bilirubin concentration was more than 400 mg/L. The dynamic adsorption of diethylenetriamine-functionalized nanofibrous membrane showed that the ligands of amine groups on the membrane surface could be used as far as possible by recirculating the plasma with certain flow rates. Therefore, the diethylenetriamine-functionalized PVA- co -PE nanofibrous membrane possessed high adsorption capacity for bilirubin and it can be candidate as affinity membrane for bilirubin removal.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Coatings Technology and Research
·
2015
·Vol. 13
·期 1
·73-80
·
IF 1.298
Pi Pihui,Chen Xi,Wen Xiufang,Xu Shouping,Cheng Jiang
An ambient-temperature self-crosslinkable acrylic resin was synthesized by solution polymerization, with ethanol as solvent; butyl acrylate (BA), methyl methacrylate (MMA), acrylic acid (AA), hydroxypropyl acrylate (HPA), and diacetone acrylamide (DAAM) as monomers; and adipic acid dihydrazide (ADH) as crosslinker. The resin could be diluted by water. The resin was used for PE film ink, and its curing behavior and film properties were studied. FTIR and DSC results indicated that the reaction between ketone carbonyl and hydrazine groups could occur during film curing at ambient temperature and improved glass transition temperature ( T
g ) of the film by 12.67°C. Crosslinking density of film increased with DAAM content and m (ADH)/ m (DAAM) ratio. Adhesion on PE film increased with DAAM content, while it first increased then decreased with m (ADH)/ m (DAAM) ratio. Water absorption of film decreased with DAAM content, while it first decreased then increased with m (ADH)/ m (DAAM) ratio. The optimal m (ADH)/ m (DAAM) ratio and DAAM content in this experiment are 0.8:1 and 2%, respectively. Compared with ambient-temperature self-crosslinkable emulsion, this water-soluble resin shows film not only with the same adhesion, but also without any shrinkage void, indicating better film-forming ability on PE film. The ambient-temperature self-crosslinkable water-soluble acrylic resin shows excellent potential application in water-based ink for PE film because of good film-forming ability and adhesion and low water absorption.
研究领域:
材料科学
·
印刷技术
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2017
·
IF 3.531
Mengying Luo,Wenwen Wang,Qinghua Zhao,Mufang Li,Yuanli Chen,Zhentan Lu,Ke Liu,Dong Wang
Poly(ethylene- co -polyvinyl alcohol) (PVA- co -PE) nanofiber membrane with abundant active hydroxyl groups on the surface was modified through a solid-phase synthesis process. The PVA- co -PE nanofibers with different average diameters ranging from 200 to 500 nm were modified by cyanuric chloride and 1, 3-propanediamine. The aminated PVA- co -PE nanofiber membrane was subsequently biotinylated and then horseradish peroxidase (HRP) was successfully immobilized onto it. The morphologies, hydrophilicity and chemical structures of membranes surface were investigated by SEM, water contact angle, FTIR and XPS. The HRP-immobilized PVA- co -PE nanofiber membrane revealed high activity, efficiency, sensitivity and reusability when it was used to catalyze the luminol-H 2 O 2 reaction. The results demonstrated that the HRP-immobilized PVA- co -PE nanofiber membrane could be a promising candidate as solid support materials for catalysis of Luminol-H 2 O 2 . The relative light unit (RLU) could run up to 5 × 10 5 when the H 2 O 2 concentration was low to 1 × 10 −15 mol/L. The HRP-immobilized PVA- co -PE nanofiber membrane was the potential chemiluminescence biosensor which could be applied in biological, medical and food fields.
研究领域:
生物化学
·
材料科学
·
分析化学
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产品关联
DOI
高影响因子
Frontiers in Microbiology
·
2015
·
IF 3.989
Deng Wanyan
PE/PPE family proteins, named after their conserved PE (Pro-Glu) and PPE (Pro-Pro-Glu) domains of N-terminal, are most intriguing aspects of pathologic mycobacterial genome. The roles of most members of this family remain unknown, although selected genes of this family are related to the virulence of Mycobacterium tuberculosis. In order to decipher the role of Rv1169c, the Mycobacterium smegmatis strain heterologous expressed this ORF was constructed and identified that Rv1169c was a cell wall associated protein with a novel function in modifying the cell wall fatty acids. The growth of Rv1169c expressing strain was affected under surface stress, acidic condition and antibiotics treatment. M. smegmatis expressing Rv1169c induced necrotic cell death of macrophage after infection and significantly decreased interlukin-6 production compared to controls. In general, these results underscore a proposing role of Rv1169c in virulence of M. tuberculosis, as it's role in the susceptibility of anti-mycobacteria factors caused by modified cell wall fatty acid, and the induced necrotic cell death by Rv1169c is crucial for M. tuberculosis virulence during infection.
研究领域:
微生物学
·
免疫学
·
分子生物学
·
传染病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Fuliang Ma,Xinran Yao,Luli Shen,Zhixiang Zeng
The poor corrosion resistance of Mg alloy has limited its application in 3C (computer, communication, consumer electronics) electronic products. The ultra-thin and fluorine-free of films is urgently needed to protect electronic products. In this work, fluorine-free Polyethylene (PE) and crosslinked-Polyethylene (C-PE) films were prepared by PECVD method for the protection of Mg alloy electronic products. The PE film is uniform and dense and the introduction of the crosslinker improves the uniformity and density of the film. The corrosion protection performance of C-PE film is further improved compared with PE film. Salt spray results show that the salt spray resistance time of C-PE film with 1.56 μm thickness reaches 72 h. The addition of the crosslinker endows the film with a denser structure and blocks the intrusion of corrosive media, making the C-PE film have excellent corrosion resistance.
研究领域:
材料科学
·
腐蚀与防护
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）