JOURNAL OF HAZARDOUS MATERIALS
·
2017
·
IF 6.065
Jianxian Zeng,Zhihui Dong,Zhe Zhang,Yuan Liu
A surface-grafted imprinted ceramic membrane (IIP-PVI/CM) for recognizing molybdate (Mo(VI)) anion was prepared by surface-initiated graft-polymerization. Firstly, raw alumina ceramic membrane (CM) was deposited with SiO 2 active layer by situ hydrolysis deposition method. Subsequently, γ-methacryloxy propyl trimethoxyl silane (MPS) was used as a coupling agent to introduce double bonds onto the SiO 2 layer (MPS-CM). Then, 1-vinylimidazole (VI) was employed as a functional monomer to graft-polymerization onto the MPS-CM (PVI-CM). During the graft-polymerization, the influence factors of grafting degree of PVI were investigated in detail. Under optimum conditions (monomer concentration 20 wt%, temperature 70 °C, initiator amount 1.1 wt% and reaction time 8 h), the grafting degree of 20.39 g/100 g was obtained. Further, Mo(VI) anion was used as a template to imprint in the PVI-CM by employing 1,6-dibromohexane as a cross-linking agent, and then Mo(VI) was removed, obtaining the IIP-PVI/CM with many imprinted cavities for Mo(VI). Thereafter, static adsorption and dynamic separation properties of IIP-PVI/CM for Mo(VI) were studied. Results indicate that IIP-PVI/CM shows a specific selectivity for Mo(VI) with the adsorption capacity of 0.69 mmol/100 g, and the selectivity coefficient of IIP-PVI/CM is 7.48 for molybdate to tungstate anions. During the dynamic separation, IIP-PVI/CM has also good selectivity for separation of Mo(VI) and W(VI) anions.
研究领域:
环境化学
·
材料科学
·
分离科学
·
高分子化学
·
无机分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2012
·Vol. 125
·期 4
·2867-2873
·
IF 1.289
Yehai Yan,Na Lu,Jian Cui,Jinfang Zhang
A new fluorescent copolymer, poly(1-vinylimidazole- co -(1-pyrene) methyl 2-methyl-2-propenote) (VI- co -PyMMP), has been designed and synthesized by a free-radical copolymerization of VI and PyMMP as well as characterized using ultraviolet (UV), Fourier transform infrared spectroscopy (FTIR), 1 H NMR, and fluorescence spectroscopies. The monomer reactivity ratios are determined by two methods of Fineman-Ross ( r 1 = 0.28 ± 0.04 for VI, r 2 = 1.32 ± 0.11 for PyMMP) and Kelen-Tüdös ( r 1 = 0.23 ± 0.05, r 2 = 1.22 ± 0.12). Based on the reactivity ratios, the monomer sequence lengths and Q and e for PyMMP monomer are further calculated. The results suggest that the copolymerization of VI and PyMMP is a nonideal copolymerization without an azeotropic point (i.e., r 1 < 1, r 2 > 1 and r 1 r 2 < 1) and has a low alternation tendency. The conclusions drawn in this work may not only direct the later synthesis of the copolymers but also enrich the database of free-radical copolymerization. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
研究领域:
高分子化学
·
功能高分子
·
荧光材料
·
聚合物合成
·
材料化学
✓ 已验证
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Jiao Li,Li He,Yan-Tong Li,Xin-Yi Long,Jia-Yu Zhang,Yuan-Lin Zhou,Nan Sun,Quan-Ping Zhang
High-speed impact, including explosions, stabbings, and ballistic penetration, poses significant threats to human safety, necessitating the development of high-performance impact-resistant materials. In this study, an organic–inorganic copolymerization strategy is proposed to synthesize a hydrogel with microcosmic soft-hard components, which displays good impact resistance (12,500 s −1 , 188 MPa) without damage at high strain rates. Moreover, when combined with Kevlar fiber, soft-hard multiscale structures from molecular to macroscale have been constructed, which exhibit excellent impact energy dissipation capacity (88.67 MJ/m 3 ) and impact resistance (5000 s −1 , 394.62 MPa) under high strain rates. This work demonstrates that the Kevlar fiber/hydrogel composite by incorporation of soft-hard multiscale structures holds substantial potential for safeguarding against high-speed impact.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER TESTING
·
2025
·
IF 6
Yingying Zhang,Cancan Yang,Chongyue Bai,Xuanye Wang,Chao Feng,Huige Wei
Polyacrylamide (PAM) based hydrogels are promising for soft strain sensor applications, while the incorporation of vinylimidazole (VI) endows the hydrogels with unique ion responsiveness and good biocompatibility. In this study, a high-performance PAM-co-VI/Ni/Co hydrogel was successfully fabricated through copolymerization of PAM with VI followed by modification with bimetallic nickel-cobalt ions. Experimental results demonstrate that when the VI content is 30% with a Ni/Co ion ratio of 3:1, the hydrogel exhibits remarkable comprehensive properties, with a tensile fracture strength of 0.46 MPa, an ultrahigh fracture strain of 1800%, a tensile sensitivity of 4.62, and long-term durability exceeding 1000 cycles. Furthermore, the hydrogel shows high pressure sensitivity (0.059 kPa -1 in the 0-5 kPa range), enabling precise detection of various mechanical signals from acoustic vibrations to complex human motions. Owing to its superior conductivity and biocompatibility, the PAM-co-VI/Ni/Co hydrogel also functions as a flexible electrode for electrocardiogram (ECG) monitoring, achieving conformal skin contact while stably acquiring high signal-to-noise ratio ECG waveforms with accurate identification of P-waves, Q, R, and S waves (QRS complexes), and other key features, demonstrating great potential for wearable health monitoring applications.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Hongmei Liu,Boyue Zheng,Zhengxue Ge,Mengyun Liu,Caihong Tao,Fangbin Fan
The analysis and treatment of hazardous substances in food have long been constrained by the dual challenges of limited single-target recognition capability and low resource utilization efficiency. To overcome these limitations, this study developed an ionic liquid-hydrogel material using a polymerization technique. The material featured a stable porous nanostructure and exhibited dual functionality, enabling highly efficient photo-catalytic degradation and adsorptive extraction. Under optimized conditions, it achieved a degradation rate of over 90 % for the dye Amaranth and extraction recovery exceeding 85 % for three benzoylurea pesticides. Mechanistic studies using in-situ IR spectroscopy revealed that the material's efficient and synergistic pretreatment capability for the two distinct classes of pollutants was attributed to the high substrate specificity of its active sites, which ensured that the two pathways operated independently without interference, guaranteeing the reliability of the treatment process. In conclusion, the developed dual-functional material combining with the advantages of low cost, ease of preparation and environmental friendliness provided an innovative strategy for the simultaneous pretreatment of multiple food contaminants and represented a significant advancement in this field.
✓ 已验证
产品关联
DOI
高影响因子
MINERALS ENGINEERING
·
2025
·
IF 5
Liwen Fu,Fen Jiao,Qian Wei,Zheyi Zhang,Pan Gong,Chenyu Fan,Tao Wei
In the present investigation, ethyl xanthate (SEX) was initially utilized as a collector, revealing a marked decrease in the flotation recovery of pyrrhotite attributable to surface coverage by serpentine slimes. To overcome this challenge, three polystyrene nanoparticle collectors—namely PS, PS-VI, and PS-MVT—were synthesized through emulsion polymerization. Flotation experiments demonstrated that all three nanoparticle effectively mitigated the detrimental impact of serpentine coating on pyrrhotite flotation, with PS-VI exhibiting the most pronounced performance. Subsequent analyses involving adsorption capacity measurements, scanning electron microscopy (SEM), and fourier transform infrared spectroscopy (FT-IR) were conducted to elucidate the adsorption behavior of PS-VI on pyrrhotite surfaces. Findings indicated that, in the presence of serpentine coatings, the positively charged PS-VI nanoparticles diminished the extent of serpentine coverage and adsorbed within the interstices of the serpentine layer via a combination of electrostatic and chemical adsorption mechanisms. Bubble collision experiment shown that this adsorption behavior facilitated the formation of the three-phase contact line (TPCL) on pyrrhotite surfaces, thereby enhancing the recovery of pyrrhotite compromised by serpentine coatings while concurrently reducing the entrainment of serpentine.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Lu Han,Chuanming Liu,Xiaona Qin,Qianling Cui,Longxiao Zhang,Lidong Li
Zn 2+ ions sensing is vital for human health and environment, and developing low-cost, water-soluble, efficient probes is still highly demanded. Herein, we report a water-soluble imidazole-based fluorescent polymer as a ratiometric probe for Zn 2+ ions sensing. By a facile radical co -polymerization, the water-soluble fluorescent polymer of PVIV-0.5BTAM was obtained carrying imidazole and imidazolium moieties together with a small amount of diphenylbenzothiadiazole (BTAM) units. Upon excitation, PVIV-0.5BTAM gave rise to dual emission bands centered at 430 nm and 540 nm, corresponding to imidazole/imidazolium and BTAM, respectively. The addition of Zn 2+ ions can coordinate with imidazole rings via multi-valent mode and act as a crosslinker, leading to the intra- and/or inter-macromolecular aggregation. Accordingly, the yellow emission of BTAM was enhanced proportionally, while the blue emission of imidazole/imidazolium kept stable and served as internal standard. The linear working curve can be established by plotting the value of I 540 /I 430 as a function of Zn 2+ ions concentration. Thus, a low-cost, water-soluble, ratiometric fluorescent polymer probe was provided as a promising candidate for Zn 2+ ions sensing.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Donghui Wang,Yuanyuan Liu,Ningning Li,Wei Liu,Yang Li,Yiming Zhang
Molecularly imprinted polymers (MIPs) have gained significant traction in food contaminant analysis owing to their tailorable binding sites and functionalities. Nevertheless, the analysis performance of MIPs fabricated via conventional imprinting methods has been hindered by heterogeneous binding cavities. Herein, we first present a template-derivatization-based oriented surface imprinting strategy to construct paper-based metal organic framework (MOF)-imprinted chips with highly ordered MIPs (FP@B-MOF@MIP) for enhanced sulfadiazine (SDZ) analysis. Cis-dihydroxy-derived SDZ (SDZ-CD) as the dummy template endowed imprinting cavities with high orientation via boronate-affinity oriented recognition. FP@B-MOF@MIP achieved good absorption capacity (76.30 mg g −1 ) and selectivity with the imprinting factor of 5.6 for SDZ. A colorimetric sensor based on FP@B-MOF@MIP was further successfully constructed for the visual determination of trace SDZ in food samples with a low detection limit of 0.0048 mg L −1 . This work provides a flexible strategy to improve the performance of MIPs for monitoring trace contaminants in foodstuffs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemCatChem
·
2026
·Vol. 18
·期 1
·e01668
·
IF 3.9
Wen Liu,Chen Xue,Zifeng Yang,LiJuan Luo,Qian Su,Weiguo Cheng
Poly (ionic liquid)s (PILs) are promising catalysts for conversion of CO 2 and epoxides into cyclic carbonates, which could mitigate greenhouse effects while generating economic benefits. To achieve efficient utilization of active sites of PILs, a series of swelling PILs were synthesized in this work by copolymerization of ionic liquid monomer (EIL) with flexible polyethylene glycol dimethacrylate (PEGDMA) at varying molar ratio. The resulting swelling PILs showed significantly improved catalytic activity compared to nonswollen PEIL obtained by EIL self-polymerization. Additionally, a lower EIL/PEGDMA ratio during synthesis increased the flexible segment length between ionic liquid sites, which enhanced the swelling ability of PILs and further improved the catalytic activity. Among the synthesized PILs, the optimized P(EIL-co-EG)1.0, which showed the strong swelling ability, achieved catalytic performance comparable to that of monomers homogeneous catalysis, yielding 93.4% PC under the reaction conditions optimized (120°C, 1.5 mol% catalyst, 2 MPa CO 2 , 3 h). Furthermore, P(EIL-co-EG)1.0 demonstrated broad substrate scope toward various epoxides. Finally, based on FT-IR and NMR spectroscopy, a plausible catalytic mechanism was proposed. This study offers valuable insights into the enhancement of heterogeneous catalyst efficiency and the rational design of quasihomogeneous catalytic systems. Graphical A series of PILs with tailored swelling abilities were synthesized by copolymerizing ionic liquid monomers with flexible polyethylene glycol dimethacrylate at varying molar ratios, which aimed to achieve full utilization of PILs internal active sites and quasihomogeneously catalytic conversion of epoxides and CO 2 to cyclic carbonates.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 2
·98
·
IF 5.3
Cui Mingyu,Shi Yuqing,Xin Jianwei,Zhang Yuqi,Wang Ji-Jiang
A Cu 2+ -coordination crosslinked two-dimensional photonic crystal hydrogel (PN-2DPCH-Cu 2+ ) was constructed, in which a polystyrene two-dimensional photonic crystal (PS-2DPC) was embedded in a Cu 2+ -crosslinked poly(acrylamide˗ co ˗acrylic acid˗ co ₋N-vinyl imidazole) hydrogel network. The introduction of Cu 2+ ions was mainly based on the coordination reaction of Cu 2+ and N atoms of the imidazole rings on the hydrogel chains. The constructed PN-2DPCH-Cu 2+ smart photonic hydrogel sensor achieved highly sensitive and simple detection of histidine (His) just using a laser pointer and a ruler. The coordination competition of Cu 2+ to His and N atoms of the imidazole rings drove the hydrogel’s response. In the presence of His, the PN-2DPCH-Cu 2+ sensor swells obviously because the stronger coordination between Cu 2+ ions and histidine compared to imidazole rings removed the coordination-crosslinked Cu 2+ from the hydrogel, thus decreasing its crosslinking density. The swollen hydrogel increased the microsphere spacing of the embedded PS-2DPC, which can be acquired by measuring the Debye diffraction ring diameter of PS-2DPC. The microsphere spacing increments were linearly changed when the His concentrations were in the ranges 0.01–0.03 µM, 0.05–1 µM and 10–500 µM, and the limit of detection was 9.6 nM. The sensor showed high selectivity to His, good anti-interference and stability, and the response can be achieved in 20 min. The good recoveries and relative standard deviations from determining His contents in milk and beverage using our constructed PN-2DPCH-Cu 2+ sensor demonstrated its accuracy and reliability. The coordination competition strategy of driving hydrogel to response can extend to develop other analytes sensitive hydrogel sensors by choosing suitable polymerizable monomers and metal ions. Graphical
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 4.7
Ziqian Xu,Rui Wang,Jianxiong Cheng,Xiaofeng Ma,Ling Zhang,Linlin Wu,Qiang Dou
Deep eutectic solvent (DES)-based eutectogels are emerging as promising candidates for flexible sensors owing to their intrinsic ionic conductivity, nonvolatility, biocompatibility, and cost-effectiveness. However, conventional eutectogels are typically mechanically weak, as they lack efficient mechanisms to dissipate energy through reversible molecular interactions. In this work, we demonstrate the rational design of transparent and ultratough eutectogels achieved by in situ polymerization of sulfobetaine vinylimidazole (VIPS) in a ZnCl2–acetamide (ZnCl2–AcAm) Type IV metal-salt DES. In this system, the sulfonate groups on PVIPS chains dynamically coordinate with Zn2+, while the adjacent imidazolium rings stabilize these interactions through dipole–dipole and π–π associations. Meanwhile, acetamide molecules form extensive hydrogen bonds with sulfonate and imidazolium groups of PVIPS, providing an additional dynamic cross-linking network. The resulting eutectogel exhibits outstanding mechanical performance with a tensile strength of 3.95 MPa, toughness of 19.78 MJ m–3, stretchability of 683%, and high optical transparency of 90%. The eutectogels also display multifunctional features including self-healing, adhesion, shape memory, and stable mechano-ionic coupling, which enable sensitive responses to strain, pressure, and temperature. These results establish the integration of zwitterionic polymers with metal-salt DESs as a distinctive strategy for designing adaptive eutectogels, advancing the development of flexible and wearable electronics.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Wenjun Zhang,Tingyan Ye,Shuangjiang Li,Yiyan Liu,Xiliang Li,Juan Li,Yunfei Zhi,Tianding Hu,Donghui Liu,Shaoyun Shan,Yi Liu
Incorporating hydrogen bond donor (HBD) groups into poly(ionic liquids) (PILs) has emerged as an effective strategy to enhance their catalytic performance in the cycloaddition of CO 2 and epoxides. However, developing polymeric catalysts that combine a high density of ionic sites with tunable HBD functionalities remains challenging. Accordingly, this study adopts a synergistic functional design strategy to construct bifunctional PILs catalysts bearing either hydroxyl or carboxyl groups on imidazolium and pyridinium backbones via a facile two-step synthetic route. In the cycloaddition of CO 2 and epoxides, all HBD-functionalized PILs exhibited significantly enhanced catalytic activity. Among them, the carboxyl-functionalized imidazolium-based PIL (PIMIBr-COOH) demonstrated the highest performance, affording a 95 % yield of chloropropylene carbonate (CPC) under relatively mild conditions (90 °C, 4 h, 0.5 MPa CO 2 ). In addition, PIMIBr-COOH exhibited excellent recyclability and broad substrate scope. Density functional theory (DFT) calculations revealed that the HBD groups effectively activate epoxide substrates. In situ FT-IR spectroscopy further revealed the critical nucleophilic role of bromide ions (Br - ) in facilitating the epoxide ring-opening process. Based on these findings, a plausible reaction mechanism was proposed for the PIMIBr-COOH catalyzed cycloaddition of CO 2 and epoxides, involving epoxide activation, nucleophilic ring opening, and cyclic carbonate formation through the synergistic interaction between the carboxyl group and Br - . This work not only elucidates the catalytic mechanism but also provides theoretical guidance for the functional design of ionic polymer catalysts toward efficient and sustainable CO 2 valorization.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）