JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Yizhou Xu,Zhichao Zhang,Ziqing Gong,Shengfei Hu
This article reports the preparation of a multi-layer core-shell flame retardant (APP@SiO 2 @MA) using melamine (MA), ethyl silicate (TEOS), and γ-(2,3-epoxypropoxy) propyltrimethoxysilane (KH-560) as raw materials, coated with ammonium polyphosphate (APP). Apply the flame retardant to PPO/PS composite materials to improve their flame retardant properties and investigate its effect on the foaming performance of PPO/PS composite materials. This article confirms the successful microencapsulation of APP by SiO 2 and MA through energy dispersive spectroscopy (EDS) analysis, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) observation. The combustion performance of P samples and their foam samples was evaluated through thermogravimetric analysis (TG), limit oxygen index (LOI), and UL-94 vertical combustion test, the residual carbon quality significantly increased from 17% of PPO/PS to 38%, and the maximum oxygen index increased from 22.9% to 30.5%. At 165°C and 3.5 MPa foaming conditions, the foaming ratio increased from 1.18 to 4.56 times, and the maximum oxygen index after foaming was 27.9%. This study provides a green and convenient method for the preparation of flame-retardant PPO/PS bead foam materials, expanding the practical application of PPO/PS in industry.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Wan Peng,Yefeng Jiang,Yang Zhang,Youjin Lai,Yiming Zhu,Huixia Wang,Zilin Kan,Pingsheng Liu
Bleeding control by traditional hemostatic materials poses a risk of continuing oozing bleeding, while existing self-gelling hemostatic powders still face challenges in simultaneously achieving robust wound sealing and effectively accelerating blood coagulation. Herein, we reported acrylic acid/methacrylic acid/2-aminoethyl methacrylate copolymer (PAMA) and chitosan (CS) as a new type of self-gelling composite powder (PAMA-CS) for acute bleeding wound sealing with reduced blood leakage. Upon rapid blood absorption, PAMA-CS powders could quickly form an adhesive hydrogel that strongly binds to bleeding tissues, exhibiting high burst pressure tolerance (up to 452.6 mmHg) for wound sealing to prevent bleeding. The incorporation of chitosan endowed significantly enhanced liquid uptake ability and accelerated blood coagulation (clot index of 77.92 % within 30 s) to the PAMA-CS powder. Based on the synergistic effect of tight adhesive sealing and accelerating intrinsic blood coagulation, PAMA-CS powders could achieve effective hemostasis within 20 s for acute bleeding liver and stomach on rats, outperforming commercial hemostatic chitosan powders. Combined with rapid hemostasis, tight & stable wound sealing, and favorable biodegradation, PAMA-CS powders may serve as a promising hemostatic candidate for emergency bleeding control and wound closure.
研究领域:
生物材料学
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医学工程
·
创伤修复
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DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 21
·2010367
·
IF 18.808
Fengning Yang,Yuting Luo,Qiangmin Yu,Zhiyuan Zhang,Shuo Zhang,Zhibo Liu,Wencai Ren,Hui-Ming Cheng,Jiong Li,Bilu Liu
Water electrolysis is promising for industrial hydrogen production to achieve a sustainable and green hydrogen economy, but the high cost of the technology limits its market share. Developing efficient yet economic electrocatalysts is crucial to decrease the cost of electricity and electrolytic cell. Meanwhile, electrolysis in seawater electrolyte can further reduce feedstock cost. Here, a type of electrocatalyst is synthesized, where trace precious metals are strongly anchored on a corrosion-resistive matrix. As an example, the produced Pt/Ni-Mo electrocatalyst only needs an overpotential of 113 mV to reach an ultrahigh current density of 2000 mA cm −2 in the saline-alkaline electrolyte, demonstrating the best performance reported thus far. It shows high activity and long durability in various electrolytes and under harsh conditions, including strong alkaline and simulated seawater electrolytes, and under elevated temperatures up to 80 ° C. This electrocatalyst is produced on a large scale at a low cost and shows good performance in a commercial membrane electrode assembly stack, demonstrating its feasibility for practical water electrolysis.
研究领域:
材料科学
·
能源工程
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DOI
高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Dewei Ma,Xiaoyang Qin,Ning Dai,Xiuhua Cao
In contrast with three-dimensional perovskites , their two-dimensional (2D) analogues have been demonstrated to effectively improve the moisture tolerance due to the hydrophobicity of the long-chain organic layers. However, the insulating property of the long-chain organic layers will deteriorate the charge transport properties of the materials, limiting their applications in photovoltaics and optoelectronics . Short-chain organic cation with less carbon atoms may be a good substitution for the preparation of 2D perovskites with superior environmental stability and optoelectronic properties. In this research, quasi-2D (C 3 H 7 NH 3 ) 2 (MA) n-1 Pb n Br 3n+1 perovskite nanocrystals with an average size smaller than 10 nm were synthesized by a one-pot method, showing tunable emissions in the range of 406–524 nm for n = 1∼∞, with corresponding band-gaps of 3.63–2.30 eV. Time-resolved photoluminescence (PL) decays show that (C 3 H 7 NH 3 ) 2 PbBr 4 has the shortest average PL lifetime of 4.4 ns with the fast decay process occupying weighting proportion of 87.3%. When the nominal perovskite layers increases up to 2–4, the average PL lifetime raises up to 10.1–41.7 ns, with the slow decay process taking up most weighting percentage of >70%. MAPbBr 3 possesses the longest PL lifetime of 151.2 ns. The perovskite nanocrystals were then attempted to modify with oleic acid or to embed in PMMA matrix in order to improve their environmental stability. Results show that the stability of oleic acid and PMMA encapsulated nanocrystals improves greatly in comparison with bare nanocrystals.
研究领域:
材料科学
·
光学
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DOI
高影响因子
ANALYTICAL BIOCHEMISTRY
·
2023
·
IF 2.9
Sili Zheng,Dongning Zhang,Bailu Duan,Guoyan Mo,Jingjing Li,Hailing Huang,Shanshan Wang,Yan Ye,Zhuang Huang,Ping Huang,Fengyun Zhang,Fang Huang,Lintao Han
Acute enteritis (AE) is a type of digestive disease caused by biochemical factors that irritate the intestinal tract or pathogenic bacteria that infect it. In China, Ma-Mu-Ran Antidiarrheal Capsules (MMRAC) have been applied against diarrhea caused by AE and bacillary dysentery for many years, but the underlying mechanisms of their beneficial effects are not known. In the present study, network pharmacology and metabolomics were performed to clarify the active ingredients of MMRAC and explore the specific mechanism of MMRAC on AE mice. A total of 43 active components of MMRAC with 87 anti-AE target genes were identified, and these target genes were enriched in IL-17 and HIF-1 signaling pathways. Integration analysis revealed that purine metabolism was the critical metabolic pathway by which MMRAC exerted its therapeutic effect against AE. Specifically, MAPK14, MMP9, PTGS2, HIF1A, EGLN1, NOS2 were the pivotal targets of MMRAC for the treatment of AE, and Western blot analysis revealed MMRAC to decrease protein levels of these pro-inflammatory signaling molecules. According to molecular docking, these key targets have a strong affinity with the MMRAC compounds. Collectively, MMRAC relieved the colon inflammation of AE mice via regulating inflammatory signaling pathways to reduce hypoxia and improved energy metabolism.
研究领域:
药理学
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代谢组学
·
炎症
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胃肠病学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yingjie Zhan,Bingfei Nan,Xiaole Zheng,Mangeng Lu,Jun Shi,Kun Wu
Here, inspired by the traditional Chinese cuisine Ma Lao, aramid nanofiber (ANF) decorated by silver nanoparticles (ANF@Ag) is prepared via in-situ depositing process of Ag ions on the surface of ANF based on dopamine chemistry reduction method. MXene/ANF@Ag nanocomposite films with various MXene concentrations are further prepared via a vacuum-assisted self-assembly strategy. ANF@Ag is designed as the organic-inorganic hybrid thermal conductive chains, while Ag nanoparticles not only play a role in heat transfer, but also catalyze the carbonization process and form massive inert gas during the combustion. Surprisingly revealing that toxic gases effectively catalyzing into friendly non-toxic carbon dioxide (CO 2 ) and forming the CO 2 molecular fire extinguisher-like effect, which are suitable for the development of ecological sustainability. The 5-MXene/ANF@Ag nanocomposite film shows excellent flame retardant properties, and the total heat release (THR) is only 0.1 kJg −1 . Meanwhile, the high in-plane thermal conductivity of 5-MXene/ANF@Ag is 18.56 W·m −1 ·K −1 , which is enhanced about 4.97 times higher than pure ANF film. It can be ascribed to the hydrogen bonding interactions and synergistic bridging effects from the MXene nanosheets and thermal conductive chains of rigid ANF@Ag. Therefore, this work displays a novel tactic to provide favorable interfacial interactions for the uninflammable thermal management materials.
研究领域:
材料科学
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热能工程
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DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Liu Heming,Xie Ruikuan,Luo Yuting,Cui Zhicheng,Yu Qiangmin,Gao Zhiqiang,Zhang Zhiyuan,Yang Fengning,Kang Xin,Ge Shiyu,Li Shaohai,Gao Xuefeng,Chai Guoliang,Liu Le,Liu Bilu
Constructing stable electrodes which function over long timescales at large current density is essential for the industrial realization and implementation of water electrolysis. However, rapid gas bubble detachment at large current density usually results in peeling-off of electrocatalysts and performance degradation, especially for long term operations. Here we construct a mechanically-stable, all-metal, and highly active CuMo 6 S 8 /Cu electrode by in-situ reaction between MoS 2 and Cu. The Chevrel phase electrode exhibits strong binding at the electrocatalyst-support interface with weak adhesion at electrocatalyst-bubble interface, in addition to fast hydrogen evolution and charge transfer kinetics. These features facilitate the achievement of large current density of 2500 mA cm −2 at a small overpotential of 334 mV which operate stably at 2500 mA cm −2 for over 100 h. In-situ total internal reflection imaging at micrometer level and mechanical tests disclose the relationships of two interfacial forces and performance of electrocatalysts. This dual interfacial engineering strategy can be extended to construct stable and high-performance electrodes for other gas-involving reactions.
研究领域:
电化学
·
材料科学
·
能源材料
·
表面科学
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产品关联
DOI
PubMed
高影响因子
Desalination and Water Treatment
·
2016
·
IF 1.272
Na Han,Sumei Chen,Guo Chen,Xuefeng Gao,Xingxiang Zhang
We report the preparation and performance of poly(acrylonitrile-methacrylate) (AN-MA) flat-sheet membranes with various MA feeding ratio via thermally induced phase separation, in which the membrane forming system consisted of AN-MA, ethylene carbonate (EC), and triethyl citrate (TEC). The effects of the preparation conditions, such as the MA feeding mole ratio, EC content in the mixed diluent, and AN-MA concentration on the pore structure, porosity, water flux, and mechanical properties of the AN-MA membranes were studied. The poly(acrylonitrile-methacrylate) (AN-MA mole ratio 85/15, 80/20, 75/25) copolymers were synthesized by emulsion polymerization. The AN-MA copolymers are melt processable in the temperature range of 130–180°C. The morphology of the resulting membrane gradually changes from a typical bicontinuous structure to a cellular structure upon increasing the polymer concentration and EC content in the mixed diluent. The water flux of AN-MA microporous membranes increased and subsequently declined as the MA feeding molar ratio increased in the polymerization system. In addition, the mechanical properties of the AN-MA membranes increased gradually. Consequently, the properties of the AN-MA membranes were optimal when the MA feeding molar ratio was 20 mol%. Correspondingly, the membrane exhibits a relatively high water flux (66.0 L/(m2 h)) and porosity (75%) when the ternary system contains 60 wt.% EC in the mixed diluent and 9 wt.% 80/20AN-MA. In addition, the membrane exhibits a higher tensile strength (4.6 MPa) and elongation (43.8%).
研究领域:
材料科学
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化学工程
·
膜技术
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DOI
高影响因子
Energy & Environmental Science
·
2023
·Vol. 16
·期 10
·4679-4692
·
IF 32.5
Yiqi Wei,Zhenglong Li,Zichong Chen,Panyu Gao,Mingxi Gao,Chenhui Yan,Zhijun Wu,Qihang Ma,Yinzhu Jiang,Xuebin Yu,Xin Zhang,Yongfeng Liu,Yaxiong Yang,Mingxia Gao,Wenping Sun,Zhiguo Qu,Jian Chen,Hongge Pan
The use of solid-state electrolytes in all-solid-state batteries is a technology with prospects for increasing energy densities. However, poor oxidative stability and issues with dendrite growth significantly hamper their applicability. LiBH4 is considered as one of the most promising candidates due to the thermodynamic stability of Li. Herein, an in situ melting reaction is proposed to generate covalently bonded coordination on the particle surfaces of electrolytes to resolve these issues. This coordination thermodynamically shuts down the electronic exchanges during the anionic oxidation decomposition by covalently bonding the local high-concentration electrons on the anions, and it kinetically blocks electronic percolation on the particle surfaces of electrolytes; this phenomenon leads to an unprecedented voltage window (0–10 V) with a peak oxidation current that is 97.2 times lower and an electronic conductivity that is 3 orders of magnitude lower than that of the counterpart at 25 °C. The coordination can act as a binder to bond electrolyte particles, achieving a remarkable Young's modulus of 208.45 GPa; this modulus is twice as high as that of the counterpart. The remarkable mechanical property of the coordination is capable of adapting the sustained stress–strain release in Li plating and stripping. With these merits, the electrolyte displays a record-breaking critical current density of 21.65 mA cm−2 at 25 °C (twice the best-reported data in Li-ion solid-state electrolytes), cycling stabilities at 10.83 mA cm−2 for 6000 h and under 10 V for 1000 h, and an operational temperature window of −30 to 150 °C. The Li–LiCoO2 cells exhibit superior reversibility at high voltage. Our findings illuminate a clear direction for oxidative stability and dendrite suppression in solid-state electrolytes, making tremendous progress in high-voltage lithium batteries.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2026
·
IF 8.6
Bingbing Liu,Xiaoduo Zhao,Yunsong Kong,Hao-zhe Xu,Weiyi Zhao,Jiale Liu,Yong-min Liang,Hao Liu,Jianzhang Wang,Shuanhong Ma,Feng Zhou
MA-MI strategy is proposed to fabricate PCU composites. • Dynamic hydrogen bonding and microgels synergistically enable self-adaptive lubrication. • PCU/MG shows excellent durability under long-term and high-load sliding. Polymeric elastomers are widely used in biomedical devices and implants. However, their inherent surface hydrophobicity hinders the formation of stable lubricating films in aqueous environments, leading to severe friction and wear. Here, we present a mechano-adaptive and microgel-integrated (MA-MI) strategy for fabricating polycarbonate polyurethane (PCU) composites (PCU/MG) that combine high load-bearing capacity with effective hydration lubrication. By incorporating controlled amounts of microgels into a dynamic hydrogen-bonded matrix, the mechanical properties and wettability are simultaneously tuned. Cyclic compression tests show that the PCU/MG-1:1 composite retains nearly 100% of its original strength and over 85% of its energy dissipation capacity after 200 cycles. Under aqueous sliding, friction-induced exposure of embedded microgels triggers localized hydration, generating a self-replenishing hydration layer and rolling lubrication components in situ. As a result, the composite exhibits low friction, load-adaptive lubricity, and stable lubrication across a wide range of aqueous environments. The PCU/MG-1:1 composite achieves an over 80% reduction in steady-state wear rate after 10,000 sliding cycles compared with short-term tests. This MA-MI strategy overcomes the longstanding trade-off between load-bearing capacity and surface lubricity in conventional polymeric elastomers, providing a promising route toward durable self-lubricating biomedical materials.
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Xuedong He,Xiang Han,Xueyan Zhou,Jiadong Chen,Juan Wang,Yan Chen,Lianghao Yu,Nan Zhang,Jun Li,Shun Wang,Huile Jin
Achieving large current density is crucial to the practical application of large-scale hydrogen production by water splitting, but it is hindered by sluggish and unstable catalysts. Herein, a Pt-induced NiFe layered double hydroxide (Pt-NiFe LDH) nanosheet is synthesized for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). It affords 10 mA cm –2 at overpotentials of only 198 mV and 36 mV for OER and HER, respectively. Impressively, an alkali-electrolyzer (Pt-NiFe LDH || Pt-NiFe LDH) exhibits a stable cell voltage of 1.887 V to deliver a current density of 1000 mA cm –2 over 3000 h. The introduction of Pt modulates the electronic structure on the surface of NiFe LDH by charging redistribution at the interface and decreasing the Gibbs free energy change (ΔG) for the potential determining step (from *O to *OOH) during OER. This work provides a facile strategy for developing catalysts for large current density water splitting.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK
·
2020
·Vol. 42
·期 9
·2287-2297
·
IF 2.538
Li-Bo Dai,Qi Yu,Shui-Hong Zhou,Yang-Yang Bao,Jiang-Tao Zhong,Li-Fang Shen,Zhong-Jie Lu,Jun Fan,Ya-Ping Huang
Background This study is to explore the role of curcumin and GLUT-1 antisense oligodeoxynucleotides (AS-ODN) on autophagy modulation-initiated radiosensitivity. Methods BALB/c mice were employed to establish xenograft model using Tu212 cell. The expression of autophagy- and apoptosis-related proteins was determined by WB. Autophagosome was observed under transmission electron microscope. Apoptosis of tumor tissue were detected by TUNEL staining. Results Combinations of curcumin and GLUT-1 AS-ODN with 10 Gy inhibited the tumor growth by inducing apoptosis of laryngeal cancer cells followed with the enhancement of autophagy. 3-MA also had a promotion effect on irradiation-mediated growth inhibition possibly by depressing PI3K and on curcumin/GLUT-1 AS-ODN-mediated growth inhibition potentially by regulating autophagic events. Of note, a de-escalation of radiotherapy dose (5 Gy) along with curcumin, GLUT-1 AS-ODN or 3-MA produced a stronger effect than high dosage of radiotherapy (10 Gy) alone. Conclusions Curcumin and GLUT-1 AS-ODN improve the radiosensitivity of laryngeal carcinoma through regulating autophagy and inducing apoptosis.
研究领域:
肿瘤学
·
药理学
·
放射生物学
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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）