JOURNAL OF POLYMER RESEARCH
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2024
·Vol. 31
·期 12
·1-12
·
IF 2.6
Cui Yi-hua,Zhang Chen-ming,Lin Jian-feng,Lin Shi-ping
By free radical polymerizing methylacrylylethyl trimethyl ammonium chloride (DMC), styrene (ST), and methoxy polyethylene glycol acrylate (MPEGA), a novel type of hydrophilic polymer antistatic agent (PDSM) was created. By utilizing FT-IR and 1 H NMR, the structure and properties of the PDSM copolymer were investigated. By using the melt blending approach, composites made of ABS (acrylonitrile-styrene-butadiene copolymer)/PDSM were generated. The composites’ mechanical characteristics and surface resistivity were measured. The results indicated that PDSM was evenly dispersed on the inner surface of ABS resin, resulting in a continuous conductive network, and serving the intended function of long-lasting antistatic. The surface resistance of ABS composites could be greatly decreased using the PDSM copolymer antistatic agent. Surface resistivity of ABS/PDSM composites were around 10 9 -10 10 Ω when the proportion of PDSM copolymer was up to 15 wt%. As MPEGA concentration increased, the surface resistivity of ABS/PDSM materials declined because MPEGA comprised hydrophilic ether bonds and flexible side chains.
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JOURNAL OF POLYMERS AND THE ENVIRONMENT
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2025
·
IF 5
He Kaijun,Zhou Guanpeng,Li Yanyan,Shen Jiajia
Polyamide 11 (PA11) is a novel type of 100% bio-based and renewable fiber which can not achieve good dyeing results for conventional water bath dyeing techniques due to its smooth surface and long carbon chain hydrophobic structure. Furthermore, conventional dyeing processes typically involve extensive use of water and chemical reagents, driving up production costs and exerting serious ecological damage. The development of a new dyeing method suitable for bio-based PA11 fibers is crucial for sustainable development in the textile industry. In this study, we present a novel method for achieving effective dyeing of bio-based PA11 fibers using only dyes, calcium chloride (CaCl 2 ), and recyclable ethanol (EtOH), eliminating the necessity for additional chemical reagents. The dyeing process operates at a reduced temperature (80 ℃) and bypasses the pre-treatment stage for PA11. Compared to the traditional aqueous dyeing, the novel method significantly enhances dye uptake (> 98%) and color depth (K/S value) of PA11, while maintaining comparable color fastness ( ≧ grades 3–4), and acceptable mechanical properties. In addition, the new dyeing method has minimal impacts on the structure and performance of bio-based PA11 fibers. This is of great significance for the development and application of bio-based PA11 in the field of chemical fibers. Graphical abstract
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Wang Zhouzhou,Ye Haotian,Li Yixin,Sheng Bowen,Wang Ping,Ou Pengfei,Li Xiao-Yan,Yu Tianqi,Huang Zijian,Li Jinglin,Yu Ying,Wang Xinqiang,Huang Zhen,Zhou Baowen
Light-driven bioethanol dehydration offers attractive outlooks for the sustainable production of ethylene. Herein, a surface-hydrogenated CrMnO x is coupled with GaN nanowires (GaN@CMO-H) for light-driven ethanol dehydration to ethylene. Through combined experimental and computational investigations, a surface hydrogen-replenishment mechanism is proposed to disclose the ethanol dehydration pathway over GaN@CMO-H. Moreover, the surface-hydrogenated GaN@CMO-H can significantly lower the reaction energy barrier of the C 2 H 5 OH-to-C 2 H 4 conversion by switching the rate-determining reaction step compared to both GaN and GaN@CMO. Consequently, the surface-hydrogenated GaN@CMO-H illustrates a considerable ethylene production activity of 1.78 mol·g cat −1 ·h −1 with a high turnover number of 94,769 mole ethylene per mole CrMnO x . This work illustrates a new route for sustainable ethylene production with the only use of bioethanol and sunlight beyond fossil fuels.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2024
·Vol. 22
·期 1
·1-17
·
IF 10.6
Wang Hui,Tang Cui,Xiang Yuxia,Zou Chan,Hu Jianming,Yang Guoping,Zhou Wenhu
Thrombotic diseases impose a significant global health burden, and conventional drug-based thrombolytic therapies are encumbered by the risk of bleeding complications. In this study, we introduce a novel drug-free nanomedicine founded on tea polyphenols nanoparticles (TPNs), which exhibits multifaceted capabilities for localized photothermal thrombolysis. TPNs were synthesized through a one-pot process under mild conditions, deriving from the monomeric epigallocatechin-3-gallate (EGCG). Within this process, indocyanine green (ICG) was effectively encapsulated, exploiting multiple intermolecular interactions between EGCG and ICG. While both TPNs and ICG inherently possessed photothermal potential, their synergy significantly enhanced photothermal conversion and stability. Furthermore, the nanomedicine was functionalized with cRGD for targeted delivery to activated platelets within thrombus sites, eliciting robust thrombolysis upon laser irradiation across diverse thrombus types. Importantly, the nanomedicine’s potent free radical scavenging abilities concurrently mitigated vascular inflammation, thus diminishing the risk of disease recurrence. In summary, this highly biocompatible multifunctional nanomaterial holds promise as a comprehensive approach that combines thrombolysis with anti-inflammatory actions, offering precision in thrombosis treatment.
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WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 5
·1-13
·
IF 3.8
Su Dan,Huang Jingyi,Li Yang,Chen Lin,Wang Yingru
This work found that rectorite (REC) has a good adsorption effect on cationic pollutants such as ciprofloxacin (CIP), with a maximum adsorption capacity of 79.73 mg/g for CIP. The zeta potential analysis showed that the electronegativity of the REC surface would be weakened after CIP adsorption under acidic conditions. Through adsorption kinetics, isotherm study, XRD, FTIR, and other characterizations, the phenomenon of reduced negative charge on the surface of REC adsorbed with CIP under acidic conditions was explained. Based on the Langmuir and Temkin models, the adsorption process of CIP on REC is a spontaneous endothermic adsorption process. The adsorption kinetics can be better described using a pseudo-second-order model, indicating that the adsorption rate is mainly controlled by chemical adsorption. The characterization further proved that REC adsorbed ciprofloxacin mainly through hydrogen bonding, cation exchange, and electrostatic gravitational interaction. CIP, as an emerging contaminant discharged into the water environment, will be harmful to the ecological environment and human health. Therefore, the utilization of REC for the removal of CIP from an aqueous solution has potential prospects.
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Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 2
·1-15
·
IF 23.2
Wu Wenling,Zhang Xuan,Chen Yinghao,Helal Mohamed H.,Alshahrani Wafa A.,Alqarni Nawal D.,Zhao Ting,Zhu Jianfeng,Luo Hongjie
As an enormously valuable cultural heritage, to make sure bronze relics receive more protection and extend the preservation time, the exploration and research of protective coatings for bronze are a systematic, long-term, and specialized study project. However, because of the diversity of influencing factors and sensitivity of copper-based substrate, the stabilization of bronze is confronted with a major challenge. Herein, a novel multifunctional organic-inorganic hybrid coating of fluoroethylene vinyl ether (FEVE), metal-organic framework (MOF)-derived hollow dodecahedral NiCo 2 O 4 nanocapsules, and Ti 3 C 2 T x -MXene nanosheets (FEVE@NiCo 2 O 4 /Ti 3 C 2 T x ) with superior superhydrophobicity, weatherability, and structural stability was fabricated. The protective effect and anticorrosion performance of organic-inorganic hybrid coating were researched by morphological examination, X-ray photoelectron spectroscopy, accelerated aging test, and electrochemical measurements. Furthermore, the multifunctional FEVE@NiCo 2 O 4 /Ti 3 C 2 T x coating exhibited favorable self-cleaning property, ultraviolet (UV) resistance, reversibility, and maintained good transparency without changing the bronze color and appearance, which would be attributed to the labyrinth effect and the complicated cross-linked skeleton of organic-inorganic hierarchical structure, preventing the transmission and diffusion of corrosive mediums. This work develops a novel material strategy to protect bronzes and explores the anticorrosion mechanism of multifunctional organic-inorganic hybrid, providing guidelines for next-generation promising protection coating. Graphical abstract
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ARCHIVES OF MICROBIOLOGY
·
2024
·Vol. 206
·期 12
·1-13
·
IF 2.3
Zhai Yafei,Wang Yuhao,Wang Bohua,Niu Liyuan,Xiang Qisen,Bai Yanhong
Dielectric barrier discharge (DBD) plasma can be used to control food spoilage and food pathogens. However, DBD plasma may induce sublethal injury in microorganisms, constituting a considerable risk to food safety. This research was designed to investigate the sublethal injury and recovery of Escherichia coli O157:H7 after DBD plasma treatment. The results indicated that the sublethal injury ratios of cells rose along with the augmentation of treatment time and input power of DBD plasma under mild treatment conditions, whereas injury accumulation ultimately culminated in cell death. The highest sublethal ratio of 99.3% was obtained after DBD plasma treatment at 18 W for 40 s. When solutions such as phosphate buffered saline (PBS), peptone water, glucose solution, and tryptic soy broth (TSB) were used for cell recovery, TSB was proven to be the most efficacious, facilitating the completion of recovery within 2 h. The repair ratio of injured cells increased as the recovery pH (3.0–7.0) and temperature (4–37 ºC) increased. Moreover, Mg 2+ and Zn 2+ were demonstrated to be necessary for the recovery process, while Ca 2+ presented a weak effect. Understanding the sublethal injury of bacteria resulting from DBD plasma treatment and their repair conditions can provide useful insight into avoiding the occurrence of sublethal injury as well as inhibiting the occurrence of recovery during food processing and storage.
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CANCER IMMUNOLOGY IMMUNOTHERAPY
·
2025
·Vol. 74
·期 3
·1-17
·
IF 5.1
Han Tianci,Guo Xiaoqi,Xie Junwei,Tong Wei,Zhang Liang
Objective Esophageal squamous cell carcinoma (ESCC) is one of the most common malignant tumors with a high metastasis rate and a poor prognosis. ETS variant transcription factor 1 (ETV1) plays an important role in multiple malignancies. However, its function in ESCC progression and tumor microenvironment (TME) remains to be explored. In this study, we characterized the role of ETV1 in ESCC process and TME. Methods Gene expression and immune infiltration in ESCC samples from the Cancer Genome Atlas (TCGA) were analyzed. The expression of ETV1 in clinical samples was detected by real-time PCR, western blot and immunohistochemistry staining. Cell growth was detected by CCK-8 and colony formation assays. Macrophage phenotypes were determined using flow cytometry. Immunofluorescence double staining was used to detect the tumor-associated macrophage (TAM) infiltration. The tumor volume was recorded and weighed. Transcriptional activity was measured using dual-luciferase assay, chromatin immunoprecipitation (ChIP) assay and DNA pull-down assay. Results In this study, through analysis of ESCC samples from TCGA database and the clinic, we noticed that ETV1 was highly expressed in ESCC tumor tissues and was associated with TAM infiltration. Overexpression of ETV1 promoted ESCC cell proliferation in vitro and xenograft tumor growth in nude mice, while ETV1 knockdown elicited the opposite effects. Furthermore, ETV1 upregulation in tumor tissues was found to drive M2 macrophage infiltration both in vitro (transwell assays) and in vivo (xenograft tumor models). C–C motif chemokine ligand 2 (CCL2), a key factor inducing M2 macrophage polarization, was also found to be elevated in ESCC tumor tissues. Mechanism study demonstrated that ETV1 facilitated M2 macrophage infiltration via the transcriptional modulation of CCL2. In addition, the cause of the changes in ETV1 activity and expression was investigated. The E2 small ubiquitin-like modifier (SUMO) binding enzyme UBC9 increased ETV1 activity and expression, indicating the presence of SUMO modification in ETV1. Conclusions Our data deciphered the mechanism of ETV1-mediated M2 macrophage infiltration in the TME of ESCC, which has important implications for the development of novel prognostic and therapeutic targets to optimize current therapies against ESCC.
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CELLULOSE
·
2025
·
IF 4.8
Song Jiangxiao,Yu Yihao,Zhang Yan,Wu Jiahui,Wang Wei,Qi Dongming
The lightweight and adjustable properties of electromagnetic interference (EMI) shielding textiles make them an ideal choice as a layer in firefighting suits designed for complex electromagnetic environments. Enhancing the flame retardant performance of EMI shielding textiles is essential to mitigate rapid combustion risks in extreme conditions, such as high temperatures or fires, thereby reducing fire spread and minimizing damage caused by fire escalation. This study demonstrates the rapid and efficient preparation of flame retardant EMI shielding textiles by employing a spray method to coat cotton fabrics with Poly (3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PEDOT:PSS) doped with ethylene glycol (EG) and phytic acid (PA). The resulting coating exhibited a shielding effectiveness test (SE T ) value of 46.61 dB, effectively blocking 99.99% of electromagnetic waves (EMWs). Even after undergoing 600 bending cycles, the SE T value could still maintain 42.34 dB. PA not only functions as a dopant to significantly enhance the electrical conductivity of PEDOT:PSS but also confers superior flame retardant properties. In comparison with untreated cotton fabric, the peak heat release rate (pHRR) was reduced from 140.77 to 10.73 kW/m 2 , representing an impressive reduction of 92.37%. The total heat release (THR) decreased from 3.97 to 2.04 MJ/m 2 , marking a substantial decrease of 48.61%. The coated fabric exhibited excellent flame retardant and EMI shielding performance. Furthermore, this innovative material is anticipated to find extensive applications in smart wearables and sensor technologies.
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Silicon
·
2024
·
IF 2.8
Mo Zhangchao,Zhu Xiaoxiao,Jiang Xuesong,Ding Juxuan,Wang Ling,Ban Boyuan,Sun Jifei,Chen Jian
Improving the purity of glass fiber powder represents a crucial challenge that needs to be addressed in the development of the glass fiber industry. To investigate the flotation behavior of glass fiber powder and the adsorption mechanism of the collector on its surface, the effect of flotation time, collector type, and concentration in flotation experiments was studied. Zeta potential, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS) were used for systematic analysis. The results show that flotation effectively removes the visible impurities mixed in the glass fiber powder. The collection capacity of poly (propylene glycol) bis (2-aminopropyl ether) (PEA) generally surpasses that of conventional monoamine collectors. With the novel collector PEA, especially at a concentration of 6 × 10 −5 mol/L of PEA-D2000, the flotation recovery rate of glass fiber powder can reach approximately 95%. Furthermore, a flotation mechanism for the glass fiber powder using amine-based collectors is proposed. It is adsorbed onto the surface of glass fiber powder through − NH 3 + /−NH 2 groups, primarily by hydrogen bonding, and supplemented by electrostatic adsorption.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 5
·1-12
·
IF 5.3
Wei Zhanxiang,Qin Cong,Yang Xuhui,Zhu Linghao,Zhao Xiaoyan,Cao Jianliang,Wang Yan
Abstract The detection of hazardous CO gas is an important research content in the domain of the Internet of Things (IoT). Herein, we introduced a facile metal-organic frameworks (MOFs)-templated strategy to synthesize Cd-doped Co 3 O 4 nanosheets (Cd-Co 3 O 4 NSs) aimed at boosting the CO-sensing performance. The synthesized Cd-Co 3 O 4 NSs feature a multihole nanomeshes structure and a large specific surface area (106.579 m 2 ·g -1 ), which endows the sensing materials with favorable gas diffusion and interaction ability. Furthermore, compared with unadulterated Co 3 O 4 , the 2 mol % Cd-doped Co 3 O 4 (2% Cd-Co 3 O 4 ) sensor exhibits enhanced sensitivity (244%) to 100 ppm CO at 200 °C and a comparatively low experimental limit of detection (0.5 ppm/experimental value). The 2% Cd-Co 3 O 4 NSs show good selectivity, reproducibility, and long-term stability. The improved CO sensitivity signal is probably owing to the stable nanomeshes construction, high surface area, and rich oxygen vacancies caused by cadmium doping. This study presents a facile avenue to promote the sensing performance of p-type metal oxide semiconductors by enhancing the surface activity of Co 3 O 4 combined with morphology control and component regulation. Graphical Abstract
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IONICS
·
2024
·
IF 2.4
Li Ao,Liang Ying,Zhang Zhen,Fang Bin
It has been widely recognized that the structure, composition, and morphology of materials determine their properties. Sulfur-doped nickel cobalt hydroxide (S-Ni 1− x Co x (OH) 2 ) nanostructures were synthesized directly on the surface of stainless steel wire mesh via a one-step facile electrodeposition route. Comparative experiments have shown that the presence of thiourea can inhibit the reduction of nickel and cobalt ions, while promoting the formation of hydroxides and further sulfurization, thereby obtaining sulfur-doped nickel cobalt hydroxide nanostructures. The doping of sulfur has been found to improve the specific capacities of the monometallic hydroxides (Ni(OH) 2 and Co(OH) 2 ), while the synergistic effect between Ni and Co has a more pronounced impact on energy storage performance. In addition, the molar ratio of nickel to cobalt can affect the morphology of material. S-Ni 0.5 Co 0.5 (OH) 2 with a favorable morphology of nanosheet array, and porous structure exhibits the highest specific capacity, optimal rate performance, and improved cycling stability among the studied electrodes. In 1 M KOH electrolyte, the specific capacities of S-Ni 0.5 Co 0.5 (OH) 2 electrode at current densities of 1 and 10 A g −1 are 488 and 275 C g −1 , respectively, and the capacity retention is 56.6% after 10,000 cycles at the current density of 10 A g −1 .
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