JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 35
·16472-16485
·
IF 3.5
Tang Hao,Zhang Man,Zhu Yuye,Chen Xuankai,Liu Dekai,Jiang Pingping,Shen Yirui
Phthalate plasticizers are gradually restricted in PVC products due to the escalating demand for health and environmental safeguards. Here, novel poly(glycerol ester) plasticizers(PGE), were synthesized utilizing biomass-derived glycerol and 1,4-cyclohexanedicarboxylic acid as raw materials via an esterification condensation reaction, with n -octanoic acid serving as an end-capping agent, adjustment of reactant ratios yielded PGE-1 and PGE-0.75, subsequently evaluated for their efficacy in PVC applications. FT-IR and GPC analyses elucidated potential structures and molecular weight distributions of the plasticizers, revealing oligomeric PGE with molecular weights spanning 1000–2000 g mol −1 . Mechanical properties, thermal stability, dynamic mechanical analysis, and migration resistance of PVC plasticized with PGE-1 and PGE-0.75 were compared against those employing conventional plasticizers, including di(2-ethylhexyl) phthalate (DEHP), dioctyl terephthalate (DOTP), and acetyl tributyl citrate (ATBC). The hyperbranched network structure and high molecular weight of PGE conferred superior thermal stability and migration resistance to the plasticized PVC samples. Notably, the T 50% of PGE-1/PVC film surpassed that of films plasticized with DEHP, DOTP and ATBC by 107.92, 95.17 and 111.14 °C, respectively. The weight loss of PGE/PVC film in distilled water, anhydrous alcohol and petroleum ether was below 2 wt% during 48 h. Furthermore, the weight loss of each PVC film was below the safety value (5 wt%) during 10 d in three different food simulants. Overall, the obtained poly(glycerol ester) plasticizers exhibit promise as phthalate replacements, owing to their favourable attributes in human health and environmental protection. Graphical abstract The poly(glycerol ester) plasticizers derived from biomass glycerol, 1,4-CHDA and n -octanoic acid exhibited superb thermal stability and migration resistance far more than commercial plasticizers in PVC, resulting from the hyperbranched network structure.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 9
·1-13
·
IF 2.8
Xu Wenwen,Wang Sheng,Ma Wei,Lv WenGuang,Fu Xin
In response to the escalating demand for lightweight, broadband and high-efficiency microwave-absorbing materials driven by the rapid advancement of electronic information technology, this study proposes a novel solution involving the fabrication of aluminum nitride (AlN)-decorated cobalt carbide (CoC) nanocomposites via an oil-bath method. The incorporation of rigid and insulating AlN significantly enhances the thermal stability and microwave absorption (MA) performance of the AlN/CoC composites. Notably, in the 80 wt% AlN/paraffin composite system, a minimum reflection loss (RL min ) of − 43.2 dB and an effective absorption bandwidth of 1.76 GHz (13.92–15.68 GHz) were achieved, which is markedly superior to that of the CoC/paraffin composite under the same filling ratio (− 8.28 dB). The results indicate that the substantial enhancement in the MA properties of the AlN/CoC composites is primarily attributed to the influence of varying AlN contents on the dielectric loss, polarization loss, and impedance matching behavior of the material. This study provides new insights and methodologies for the development of lightweight, broadband, and high-efficiency microwave-absorbing materials. The design strategy of AlN/CoC composites holds great potential for widespread application in fields such as aerospace, electromagnetic shielding, and radar stealth.
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Journal of Inorganic and Organometallic Polymers and Materials
·
2024
·
IF 3.9
Agha Hasan M.,Abdulhameed Ahmed Saud,Jawad Ali H.,Khadiran Tumirah,ALOthman Zeid A.,Wilson Lee D.
A biopolymer matrix of chitosan (CTS) and algae (AGA) was chemically modified with a natural genipin (GEN) cross-linker agent via hydrothermal process. The resulting green adsorbent (CTS-GEN/AGA) was evaluated for removal of the cationic dye (methyl violet, MV) from aqueous media. The optimization of MV adsorption onto CTS-GEN/AGA was performed using the Box–Behnken design (BBD), considering the variables of adsorbent dose (0.02–0.1 g/100 mL), pH (4–10), and time (20–300 min). The CTS-GEN/AGA demonstrated the highest MV removal (76.49%) for optimal operational parameters: CTS-GEN/AGA dosage (0.0938 g/100 mL), pH (8.4), and contact time (215.3 min). The adsorption isotherm analysis revealed a close fit between the experimental data of MV adsorption and the Temkin model. Furthermore, the adsorption kinetics are well-described by the pseudo-second-order model. The maximum adsorption capacity of CTS-GEN/AGA was 71.9 mg/g at 25 °C. The probable adsorption mechanism can be assigned to H-bonding, electrostatic forces, and n–π stacking interactions. These findings highlight the potential of CTS-GEN/AGA as an effective adsorbent for treatment of wastewater for the removal of organic dyes.
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JOURNAL OF ELECTRONIC MATERIALS
·
2024
·Vol. 53
·期 6
·3320-3328
·
IF 2.2
Liang Yuzhou,Li Ting,Wang Xue,Yang Chao
Nitrogen-doped carbon is a major class of high-performance electrode materials for the electrochemical supercapacitor. Herein, nitrogen-doped carbon was obtained by pyrolysis to graphene-grafted polyimide precursors on carbon cloth through in situ polymerization. The morphology, structure, and electrochemical properties of flexible electrodes were investigated in detail. Scanning electron microscopy (SEM) confirmed the preparation of nitrogen-doped carbon on carbon cloth. X-ray photoelectron spectroscopy (XPS) characterization showed the doping of the N heteroatom. Flexible electrodes obtained with the optimized mass graphene delivered high specific capacitance of 669 F g −1 at 0.5 A g −1 and good cycle stability, with retention of 122.3% capacitance after 6000 cycles in a three-electrode system. These typical flexible electrodes show great potential in wearable energy storage devices.
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Science China-Chemistry
·
2025
·
IF 9.7
Guo Haikun,Li Xiang,Chai Shengchao,Li Haibin,Li Tingting,Song Shihao,Zuo Peng,Li Haolong
Achieving the decoupling of ion transport and mechanical relaxation, also known as superionic conduction, is a crucial goal for electrolyte materials in energy and electronics technologies. However, constructing highly efficient ionic conductive pathways to overcome the trade-off that restrained segments reduce ionic conduction in polymer electrolytes still remains challenging. Given the non-covalent binding nature of supramolecular polymers, which offers advantages such as dynamic segments and easy integration of ionophilic units, here we present the creation of supramolecular polymer proton conductors (SPPCs) based on deep eutectic solvents (DESs) and polyoxometalate (POM) nanoclusters as hybrid monomers. By innovatively incorporating glycosyl and zwitterionic groups into DES precursor, the resulting glycosyl zwitterionic DESs can be non-covalently crosslinked by POM nanoclusters through synergistic hydrogen bonding and electrostatic interactions, leading to the solidification of DESs. The dense supramolecular networks formed within SPPCs serve as mechanical support and proton-conducting pathways. This gives SPPCs significant adhesive strength, high viscosity, excellent proton conductivity, and high mechanical-conductive decoupling ability. Furthermore, vanadium-substituted POM nanoclusters in SPPCs exhibit an additional pseudocapacitance for flexible supercapacitors, achieving an impressive increase in specific capacitance compared to tungsten-containing POM nanoclusters. This work highlights the immense potential of using functional supramolecular polymers to boost the development of innovative electrolyte materials.
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VETERINARY RESEARCH
·
2025
·Vol. 56
·期 1
·1-17
·
IF 3.5
Zhang Yanwei,Jia Zhao,Yuan Gaoliang,Chen Kangyong,Cen Jing,Wang Junya,Feng Hao,Adamek Mikolaj,Zou Jun
Heterogeneous nuclear ribonucleoproteins (hnRNPs) are a group of 34–120 kDa nuclear proteins that have recently been reported to participate in virus replication. The hnRNP family contains approximately 20 members, including hnRNP A1, hnRNP A2, hnRNP A2B1, hnRNPC, hnRNPD and hnRNPK. HnRNPC plays important roles in RNA biology, including expression, stability, mRNA splicing, nonspecific sequence export and 3’-end processing; however, the mechanisms underlying hnRNPC regulatory roles are not fully understood. Here, we found that zebrafish hnRNPC promoted spring viraemia of carp virus (SVCV) replication by increasing the stability of SVCV phosphoprotein while inhibiting the K48-linked ubiquitination of virus phosphoprotein, thereby suppressing the type I interferon (IFN) response. Mechanistically, hnRNPC could interact with the mediator of IFN regulatory factor 3 activation (MITA) to activate K48-linked ubiquitination for MITA degradation through the C-terminal domain of hnRNPC. We also showed that human hnRNPC could interact with MITA and that the overexpression of human hnRNPC decreased MITA protein in HEK293 cells, suggesting that the negative regulatory effects of hnRNPC on the type I IFN response are evolutionarily conserved. Collectively, our data indicate that hnRNPC promotes virus replication by suppressing IFN production activated by MITA and increasing the availability of viral proteins. Our work reveals an evolutionarily conserved mechanism that controls the IFN-mediated antiviral response by a member of the hnRNP family in vertebrates.
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PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-20
·
IF 10.6
Guo Hong,Li Xia,Mao Dengxuan,Wang Hong,Wei Liangyin,Qu Ding,Qin Xiaoying,Li Xiaoqi,Liu Yuping,Chen Yan
The insufficient abundance and weak activity of tumour-infiltrating lymphocytes (TILs) are two important reasons for the poor efficacy of PD-1 inhibitors in hepatocellular carcinoma (HCC) treatment. The combined administration of tanshinone II A (TSA) and astragaloside IV (As) can up-regulate the abundance and activity of TILs by normalising tumour blood vessels and reducing the levels of immunosuppressive factors respectively. For enhancing the efficacy of PD-1 antibody, a magnetic metal–organic framework (MOF) with a homologous tumour cell membrane (Hm) coating (Hm@TSA/As-MOF) is established to co-deliver TSA&As into the HCC microenvironment. Hm@TSA/As-MOF is a spherical nanoparticle and has a high total drug-loading capacity of 16.13 wt%. The Hm coating and magnetic responsiveness of Hm@TSA/As-MOF provide a homologous-magnetic dual-targeting, which enable Hm@TSA/As-MOF to counteract the interference posed by ascites tumour cells and enhance the precision of targeting solid tumours. Hm coating also enable Hm@TSA/As-MOF to evade immune clearance by macrophages. The release of TSA&As from Hm@TSA/As-MOF can be accelerated by HCC microenvironment, thereby up-regulating the abundance and activity of TILs to synergistic PD-1 antibody against HCC. This study presents a nanoplatform to improve the efficacy of PD-1 inhibitors in HCC, providing a novel approach for anti-tumour immunotherapy in clinical practice.
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FIBERS AND POLYMERS
·
2024
·
IF 2.2
Zhang Qi,Yang Ce,Gu Mingqi,Qin Shaoxuan,Yin Jianhua,Wang Xiangrong,Zhang Wei
The integration of natural dyes and biomass-based dyeing auxiliaries holds huge potential to address the environmental sustainability challenges, which the textile industry encounters. This research employed Portulaca oleracea L. extract as a natural dye, utilizing laccase as a catalyst for polymerizing the dye, thereby creating a precursor that enhances its eco-friendly dyeing attributes on cotton fabrics. The initially exhibited suboptimal direct dyeing performance on cotton fabrics, resulting in a faint yellow hue and a K/S value of 0.66. However, following laccase catalysis, the depth of color on the dyed fabric significantly increased, with a K/S value reaching 4.41, and the dye uptake rate increased from 14.54% to 33.69%. The resulting dyed fabric exhibited excellent fastness to soap washing, light, and rubbing, all scoring above levels 4 to 5. Analysis of dyeing kinetics and adsorption models indicated that the dyeing process was consistent with both the pseudo-first-order and pseudo-second-order kinetic models, suggesting physical and chemical bonding between the precursor and the fiber. Further investigations employing ultraviolet spectrum analysis, matrix-assisted laser desorption/ionization time of flight mass spectrometry, and gas chromatography-mass spectrometer revealed the fundamental composition of the natural dye, the molecular weight, and structural characteristics of the precursor, substantiating that the catalytic mechanism involves laccase-catalyzed oxidation. Additionally, the dyed cotton yielded an ultraviolet protection factor value of 230 and a long-lasting herbal fragrance, accurately identified by an electronic nose. These results confirm the viability of intensifying fabric color using the laccase-catalyzed system. This technique significantly expands the environmental applications of its extract.
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Probiotics and Antimicrobial Proteins
·
2024
·
IF 4.4
Feng Xiaoyan,Wang Mengqi,Wen Siyue,Hu Liehai,Lan Yuzhi,Xu Hengyi
Mitigating steatosis is essential for delaying the progression of alcoholic liver disease. The effect and mechanism of Lactiplantibacillus plantarum P101 (LP.P101) on alleviating alcohol-induced hepatic lipid accumulation were investigated in our study. The mouse model was constructed by a short-term (10-day)-plus-binge ethanol feeding and gavaged with 10 8 CFU/mL of LP.P101 daily. Lipid droplet in the liver was significantly reduced by LP.101 intervention on AMPK activation. However, when AMPK was inhibited by dorsomorphin, the levels of related indicators (ALT, TG, etc.) and the expression levels of AMPK and relevant genes in the liver converged to that of the alcohol-fed group. Compared with the alcohol-fed group, LP.P101 reduced the relative abundance of Firmicutes and increased that of Bacteroidetes. Parabacteroides merdae was negatively correlated with lipid accumulation, and unclassified Negativibacillus was negatively associated with AMPK activation. Importantly, LP.P101 modified the compositions of the serum metabolites. The potential biomarker stercobilinogen was positively correlated with AMPK activation and negatively associated with lipid accumulation. This work confirmed that LP.P101 attenuated alcohol-induced hepatic lipid accumulation in mice through AMPK activation, and the alterations in gut microbiota and metabolites may play a significant role on AMPK activation.
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Probiotics and Antimicrobial Proteins
·
2024
·
IF 4.4
Zhu Yuan-ting,Wang Xing-jie,Liu Shu-liang,Lai Jing-hui,Li Jian-long,Li Qin,Hu Kai-di,Liu Ai-ping,Yang Yong,He Li,Chen Shu-juan,Ao Xiao-lin,Zou Li-kou
Phthalate acid esters (PAEs) and their metabolites, such as di- n -butyl phthalate (DBP) and mono- n -butyl phthalate (MBP), are known to cause male reproductive damage. Lactiplantibacillus plantarum RS20D has demonstrated the ability to remove both DBP and MBP in vitro, suggesting its potential as a detoxifying agent against these compounds. This study aimed to investigate the protective effects of RS20D on DBP or MBP-induced male reproductive toxicity in adolescent rats. Oral administration of RS20D significantly mitigated the histological damage to the testes caused by MBP or DBP, restored sperm concentration, morphological abnormalities, and the proliferation index in MBP-exposed rats, and partially reversed spermatogenic damage in DBP-exposed rats. Furthermore, RS20D restored serum levels of estradiol (E2) and testosterone, and superoxide dismutase (SOD) activity in DBP-exposed rats, significantly increased testosterone levels in MBP-exposed rats, and restored copper (Cu) concentrations in the testes after exposure to DBP or MBP. Additionally, RS20D effectively modulated the intestinal microbiota in DBP-exposed rats and partially ameliorated dysbiosis induced by MBP, which may be associated with the alleviation of reproductive toxic effects induced by DBP or MBP. In conclusion, this study demonstrates that RS20D administration can alleviate male reproductive toxicity and gut dysbacteriosis induced by DBP or MBP exposure, providing a dietary strategy for the bioremediation of PAEs and their metabolites.
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CELLULOSE
·
2024
·
IF 4.9
Zhang Hao,Chen Junfeng,Wang Yanan,Zhang Ying,Dou Huicheng,Zhong Hao,Guo Minghui
Wood-based laminated composites with excellent strength and toughness have attracted much attention, but it is a challenge to process fast-growing natural poplar wood with poor mechanical properties into high-performance laminated composites without the use of adhesives. In this study, natural poplar wood was delignified and TEMPO-oxidized by a “top-down” strategy to obtain a wood scaffold with a cellulose content of up to 98%, which was then used as a substrate and impregnated with Ca 2+ and PVA to form a large number of hydrogen and ionic bonds within the wood. Finally, under the action of hot pressing, laminated composites with high tensile strength (237 MPa), flexural strength (246 MPa) and impact toughness (50.45 KJ/m 2 ) were obtained, which also displayed excellent thermal stability and water resistance. This work demonstrates that the utilization of renewable fast-growing poplar wood as a substrate and glue-free bonding method can produce low-cost, sustainable and high-performance wood-based laminated composites.
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International Journal of Minerals Metallurgy and Materials
·
2025
·Vol. 32
·期 3
·645-656
·
IF 7.2
Wang Long,Liu Jiurong,Xie Shenghui,Deng Yanli,Wang Zhou,Hou Shanyue,Yue Shengying,Wang Gang,Wu Na,Zeng Zhihui
W-type barium–nickel ferrite (BaNi 2 Fe 16 O 27 ) is a highly promising material for electromagnetic wave (EMW) absorption because of its magnetic loss capability for EMW, low cost, large-scale production potential, high-temperature resistance, and excellent chemical stability. However, the poor dielectric loss of magnetic ferrites hampers their utilization, hindering enhancement in their EMW-absorption performance. Developing efficient strategies that improve the EMW-absorption performance of ferrite is highly desired but remains challenging. Here, an efficient strategy substituting Ba 2+ with rare earth La 3+ in W-type ferrite was proposed for the preparation of novel La-substituted ferrites (Ba 1− x La x Ni 2 Fe 15.4 O 27 ). The influences of La 3+ substitution on ferrites’ EMW-absorption performance and the dissipative mechanism toward EMW were systematically explored and discussed. La 3+ efficiently induced lattice defects, enhanced defect-induced polarization, and slightly reduced the ferrites’ bandgap, enhancing the dielectric properties of the ferrites. La 3+ also enhanced the ferromagnetic resonance loss and strengthened magnetic properties. These effects considerably improved the EMW-absorption performance of Ba 1− x La x Ni 2 Fe 15.4 O 27 compared with pure W-type ferrites. When x = 0.2, the best EMW-absorption performance was achieved with a minimum reflection loss of −55.6 dB and effective absorption bandwidth (EAB) of 3.44 GHz.
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危险品化学品经营许可证（带存储）