CONSTRUCTION AND BUILDING MATERIALS
·
2026
·
IF 8.9
Shibo Zhang,Jun Xie,Shaopeng Wu,Sihui Peng,Derun Zhang,Fusong Wang
The rapid elimination of free calcium oxide (f-CaO) is critical for the large-scale utilization of steel slag (SS). To address this, an acrylic acid-vinyl phosphonic acid copolymer (AA-co-VPA) with high Ca²⁺ chelating capacity was utilized in this study. The chelation mechanism of AA-co-VPA with f-CaO and the modification mechanism regarding the microscopic properties and volume stability of SS were systematically investigated via SEM-EDS, XPS, FTIR, and CT scanning. On this basis, a systematic performance validation was conducted, spanning from aggregates and asphalt mastic to the asphalt mixture. The results indicated that AA-co-VPA exhibited exceptional Ca²⁺ chelation performance attributed to its unique bifunctional molecular structure, achieving a chelation capacity of 375 mg/g. At the optimal modification concentration of 1.0%, the immersion expansion rate of the AA-co-VPA modified steel slag (AAVPA-SS-1.0) significantly decreased from 3.76% for unmodified SS to 0.37%, and its f-CaO content was lowered to 0.44%. Microstructural analysis revealed that the proportion of micropores smaller than 100 μm in AAVPA-SS-1.0 was reduced by approximately 90%, leading to synchronous improvements in water absorption and mechanical properties. Rheological tests demonstrated that substituting mineral fillers with the filler (AAVPA‑SSP) prepared from AAVPA‑SS‑1.0 significantly enhanced the elastic recovery and high-temperature resistance to permanent deformation of the asphalt mastic. Finally, the resulting modified steel slag asphalt mixture (AAVPA-SSAM) exhibited excellent pavement performance, with an immersion expansion ratio of only 0.51%, far lower than the 2.82% of the asphalt mixture with unmodified steel slag (SSAM). While effectively addressing the volume stability issue, its water stability and high-temperature rutting resistance were superior to those of both the basalt asphalt mixture (BAM) and SSAM, and its low-temperature cracking resistance met specification requirements.
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高影响因子
POLYMER BULLETIN
·
2011
·Vol. 67
·期 1
·141-158
·
IF 1.215
An Huiyong,Lu Cuige,Wang Pixin,Li Wenbo,Tan Ying,Xu Kun,Liu Chang
A novel hydrophobically associating polyampholytes of poly(AM/AA/AMQC12) were synthesized by the free radical copolymerization of acrylamide (AM), acrylic acid (AA), and dimethyldodecyl(2-acrylamidoethyl)ammonium bromide (AMQC12) in water without any surfactants (named AAQ series). The structures of polymers were confirmed by 1 H NMR and 13 C NMR. The molecular weight and polydispersity were obtained using gel permeation chromatography (GPC). The hydrophobically associated properties of polymer solution were characterized by rheology, steady-state fluorescence probe, and 1 H NMR relaxation time ( T
2 ). Isoelectric points (IEPs) of polymer solution were determined by the effect of pH on viscosity below critical association concentrations (cac), and the reduced viscosities of samples at IEPs were increased in the presence of NaCl. Moreover, the steady-shear viscosity of sample at IEP was also greatly enhanced in NaCl solutions when the polymer concentration is above the cac. Meantime, the storage modulus and the loss modulus of copolymers showed that the sample behaved as gel in salt media.
研究领域:
高分子化学
·
材料科学
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高影响因子
CARBOHYDRATE POLYMERS
·
2013
·
IF 3.479
Yiming Zhou,Shiyu Fu,Liangliang Zhang,Huaiyu Zhan
Superabsorbents based on carboxylated cellulose nanofibrils (CCNFs) and carboxymethyl cellulose-g-poly(acrylic acid-co-acrylamide) were synthesized. A series of experiments were performed to evaluate the influence of factors such as CCNFs amount, solution pH, temperature, salt solution type and concentration on the swelling behaviors of the hydrogels. The water uptake of the hydrogels strongly depended on the CCNF content, the swelling capacity in distilled water increased dramatically from 245.8 to 458.7 g/g with the addition of CCNFs up to 2.5 wt%. Furthermore, the incorporation of CCNFs improved salt resistance properties of the hydrogels with slower deswelling rate and higher water retention capacity at deswelling equilibrium. Besides, the CCNF nanocomposite hydrogels presented better responsive behavior in relation to pH presence and showed an increase in water retention capacity at various temperatures. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) were employed to examine the structure and morphologies of the prepared superabsorbent hydrogels.
研究领域:
材料科学
·
化学工程
·
生物材料
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DOI
PubMed
高影响因子
COLLOID AND POLYMER SCIENCE
·
2023
·Vol. 301
·期 5
·445-453
·
IF 2.4
Li Bin,Hao Wenrui,Xu Xiaojia,Liu Jizhen,Fu Dandan,Zhou Mengjing,Hu Zhigang
Choline chloride (ChCl) was used as the hydrogen bond acceptor (HBA) and acrylic acid (AA) and acrylamide (AM) as the hydrogen bond donor (HBD), and the three materials were mixed in a certain molar ratio to obtain deep eutectic solvent (DES). Subsequently, P(IA-co-AA-co-AM) composite hydrogels were prepared by adding itaconic acid (IA) to DES using the frontal polymerization (FP) method. The hydrogels were characterized by Fourier infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), and the influence patterns of IA content on the mechanical properties, swelling properties, and pH responsiveness of the composite hydrogels were investigated. The results showed that the composite hydrogel exhibited a homogeneous porous structure. The elongation at the break of the composite hydrogel gradually increased with the increase of IA content, and the elongation of the FP4 sample reached 167%. The addition of IA increased the number of hydrophilic groups, resulting in a 2.14-fold increase in the equilibrium swelling of the composite hydrogel in distilled water. P(IA-co-AA-co-AM) composite hydrogels exhibit different swelling patterns in acidic and alkaline environments, making them promising for acid–base indicators, biosensors, and other applications. In this study, a simpler and greener method was proposed to prepare P(IA-co-AA-co-AM) composite hydrogels with pH responsiveness.
研究领域:
材料科学
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高分子化学
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生物医学工程
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 136
·期 48
·48362
·
IF 2.188
Xianwu Jing,Youquan Liu,Wei Li,Yuan Xu,Zhiyu Huang
A water-miscible nonionic surfmer (AC-TX100) was synthesized based on Triton X-100 and acryloyl chloride. Then, a terpolymer P(AM/AA/AC-TX100) was synthesized by free radical polymerization in aqueous solution and intended to be used as drag reducing agent (DRA). The DRA was defined to be P(AM 87.32 /AA 12.46 /AC-TX100 0.22 ) according to 1 H NMR and elemental analysis, the molecular weight was 2.12 × 10 6 g/mol according to scattering method. DRA shows excellent performance in drag reduction (DR). The highest DR rate of 76% can be obtained when DRA concentration is 0.023% in fresh water; while in brine containing 3% NaCl, DR rate decreases, and it is necessary to increase the concentration to 0.05% to ensure that DR rate is higher than 70%. SEM and cryo-TEM show that DRA forms a network structure in aqueous solution, and the tightness of this structure has a direct influence on DR performance. Specifically, DRA molecules stretch into the whirlpools generated by water at high flow rates, reducing the quantity and intensity of whirlpools, thereby lowering the energy loss and the friction. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 48362.
研究领域:
高分子化学
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流体力学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 16
·12237-12247
·
IF 3.84
Zifei Wang,Zhipeng Wang,Hui Zhang,Xuemin Duan,Jingkun Xu,Yangping Wen
A novel and simple strategy to prevent swelling, disintegration, cracking and peeling-off of poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) film in water was developed. This strategy was based on the film of a conducting polymer, poly(acrylic acid modified EDOT-co-EDOT):PSS (poly(EDOT-co-EDOT-AA):PSS). The film had high soaking stability, good adhesive ability, and high flexibility, which are crucial to maintaining long-term electrode stability in water of the PEDOT:PSS film. The most widely studied novel carbon nanomaterial, graphene, and a unique and versatile clay nanomaterial, halloysite, were introduced into poly(EDOT-co-EDOT-AA):PSS aqueous dispersion to prepare organic polymer–inorganic nanocomposites. Use of poly(EDOT-co-EDOT-AA):PSS film and its composite films as electrode coatings enabled long-term high performance of the film electrodes and provided high electrode stability and high adhesive ability. The structure, optical, flexibility, conductivity properties and morphology of poly(EDOT-co-EDOT-AA):PSS and its composites were systematically investigated. The performance of poly(EDOT-co-EDOT-AA):PSS film and its composite films, and their electrodes in sensing applications was also evaluated. The as-prepared electrochemical electrodes displayed high electrocatalytic activity in the detection of epinephrine, tryptophan, maleic hydrazide, and vitamin B6, as well as high sensing stability. The results indicated that poly(EDOT-co-EDOT-AA):PSS and its composites had potential applications for various electrode coatings.
研究领域:
材料科学
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生物医学工程
·
电化学
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 31
·1-22
·
IF 2.8
Guo Yiting,Hao Jingyi,Wang Tian,Su Shen,Yang Shuangshuang,Wang Xingwei,Yu Qiangliang
To investigate the electromagnetic wave absorption performance of electromagnetic-regulated materials and copolymerized composite aerogels with polymer materials, this study loaded nano-Fe 3 O 4 onto modified CNTs through a hydrothermal reaction. The resulting material was then added to a prepolymer solution of acrylic acid and acrylamide monomers for copolymerization, followed by the preparation of composite aerogels using freeze-drying technology (Fe 3 O 4 -CNTs/P(AA-AM)). The influence of the addition amount of nano-Fe 3 O 4 -loaded modified CNTs on the electromagnetic wave absorption performance of the composite aerogels was systematically studied. Notably, the Fe 3 O 4 -CNTs/P(AA-AM)-5 aerogel exhibited the optimal wave-absorbing performance, achieving a minimum reflection loss of −35.5 dB and an effective absorption bandwidth of 5.04 GHz below −10 dB. This is primarily attributed to the excellent dual electromagnetic loss of Fe 3 O 4 -CNTs and the multiple reflection, polarization, and relaxation processes induced by the three-dimensional conductive network constructed within the aerogel skeleton. The performance relationships revealed in this study are of significant importance for the design and preparation of polymer aerogels with effective electromagnetic wave absorption capabilities.
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高影响因子
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
·
2017
·Vol. 90
·期 3
·480-491
·
IF 0.375
Lai Nanjun,Li Shitao,Liu Lu,Li Yanxiang,Li Jun,Zhao Maoyue
In this study, various modified nano-SiO 2 functional monomers (nano-SiO 2 -KH540-MAH) were prepared and reacted with acrylamide (AM) and acrylate (AA) to synthesize a water-soluble hyperbranched copolymer (nano-SiO 2 /AM/AA) for medium- and low-permeability reservoirs and heterogeneous reservoirs by using the redox free-radical polymerization strategy. The HCl‒CH 3 CH 2 OH titration expectedly demonstrated that the monomers underwent a controlled modification. The copolymers were characterized by a series of experiments, including IR, 1 H NMR and DLS methods. Furthermore, it was shown that, compared with the rheological properties of various modified copolymers, Polymer-40 has a better viscosity and elasticity due to the better molecular structure. An indoor displacement test demonstrated that the mobility control ability and the EOR ability had a favorite relationship with rheology. The RF, RRF and EOR of Polymer-40 were higher than the same parameters of other modified copolymers.
研究领域:
石油工程
·
材料科学
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Hepeng Zhou,Wenhao Jia,Wenfeng Pan,Yongbing Zhang,Chang Liu,Handan Wu,Xuekun Tang,Meifen Lei
The flotation separation of calcium-bearing minerals remains challenging due to their similar crystal structures and calcium active sites. Conventional depressants like sodium silicate are required in large dosages, leading to significant issues with wastewater treatment and economic viability. Herein, a novel depressant scheme combining poly(acrylic acid-2-acrylamido-2-methylpropane sulfonic acid) (AA/AMPS) and sodium oleate (NaOl) was employed for flotation separation of calcite from scheelite. The underlying mechanism was elucidated through surface analysis and density functional theory (DFT) calculations. The results demonstrate that at a pulp pH of 8.0 and with a low AA/AMPS dosage of merely 4 × 10 −6 mg/L, a scheelite concentrate with a WO 3 grade of 69.8% was obtained from the artificial mixed ore. This concentrate exhibited superior grade and recovery compared to those achieved using traditional sodium silicate and other reported novel depressants, while requiring a significantly lower reagent dosage. The study confirms that the –SO 3 − groups in AA/AMPS engage in strong, specific chemisorption with the active sites on the calcite surface via an electronic effect. The pronounced differences in adsorption thermodynamics and electrostatic repulsion enable AA/AMPS to achieve highly selective masking of the active sites on calcite. Consequently, this research presents an efficient depressant for the scheelite separation. These findings indicate that AA/AMPS is an efficient and environmentally benign depressant, demonstrating promising potential for industrial scheelite flotation.
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高影响因子
Advanced Materials Technologies
·
2024
·
IF 6.4
Yichao Wang,Mengjuan He,Jingli Tang,Liqian Huang,Xueli Wang,Jianyong Yu
Conductive textiles with electromagnetic interference (EMI) shielding functionality are highly desirable for growing flexibility requirements of EMI shielding devices. Most extant shielding coatings on textiles rely on rigid nanomaterials, which are susceptible to detachment, and generate a great deal of reflected EM waves. Thus, there is a high demand for shielding coatings on textiles that are stretchable, stable, and capable of suppressing the secondary reflection toward incident EM waves. Liquid metal is a particularly suitable candidate owing to its high electrical conductivity and excellent conformality. Herein, a straightforward coating strategy is developed for fast fabrication of Ion/Clay-F that is reinforced with ionogel encapsulation. Especially, the method enables the direct transformation of fluid-like liquid metal into a clay-like state and the preparation of ionogel sealings from monomer solutions. The resulting Ion/Clay-F exhibits promising features, including high total EMI shielding effectiveness (SE T ) (highest value of 49.3 dB for a single layer and an average value of 73.0 dB for three layers), low reflectivity (0.404), improved tensile strength (13.16 MPa) and tolerance in a wide range of temperatures (−18–100 °C). Remarkably, such Ion/Clay-F outperforms pure cotton fabric in terms of thermal management, delivering superior heat dissipation and thermal insulation properties.
研究领域:
材料科学
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电子工程
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高影响因子
CHROMATOGRAPHIA
·
2019
·Vol. 83
·期 2
·205-217
·
IF 1.552
Li Li,Chen Naijiang,Gu Puzhong,Li Honglei,Li Mengqing,Zhang Ziyue,Chen Ruiling,Zhang Ming
Abstract Compound amino acid injection-18 AA (CAAI-18 AA) is widely applied in medical care as a part of total parenteral nutrition systems. Thus, suitable quality control of CAAI-18 AA is of crucial importance for safety of the patients. Tryptophan (TRP) is one of the main components in CAAI-18 AA and may be degraded to 5-hydroxy-tryptophan (5-HTP), 5-hydroxytryptamine (5-HT), kynurenine (KYN) and indole (IN) under certain conditions, such as oxidation environments, ultraviolet light radiation and nonsterile conditions. The existence of these harmful impurities seriously affects the quality of CAAI-18 AA. Here, a simple HPLC approach with a PDA detector was developed and validated for simultaneous determination of the concentrations of 5-HTP, 5-HT, KYN and IN impurities in CAAI-18 AA. Separation of these four impurities in CAAI-18 AA was achieved under a gradient condition using acetonitrile and 10 mM phosphate buffer (containing 10 mM sodium 1-octanesulfonate, pH adjusted to 1.8 with phosphoric acid). To detect the four analytes with high sensitivity, multi-wavelength detection at 257, 270 and 276 nm was carried out during the separation. The method was validated in accordance with ICH guidelines and the results were compared to that obtained by UHPLC–MS/MS, showing that the two approaches did not provide significantly different results. Our results reveal that the simple and less expensive HPLC method holds great potential for quantitation of the four impurities in CAAI-18 AA. Graphic Abstract
研究领域:
药学
·
分析化学
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高影响因子
Journal of Coatings Technology and Research
·
2020
·Vol. 17
·期 3
·765-776
·
IF 1.815
Zou Weirong,Fan Zhuizhui,Zhai Shixiong,Wang Siwei,Xu Bi,Cai Zaisheng
AbstractIn this work, a multifunctional coating was developed by grafting a zwitterionic poly[2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)-co-acrylic acid [poly(SBMA-co-AA)] polymer onto a glass slide, which possesses excellent antifog, antifrost, and self-cleaning properties. These properties are attributed to the strong hydration of the hydrophilic zwitterionic PSBMA segments. The durability of the coating can be improved because the carboxyl group (–COOH) of the PAA segment enables formation of a robust covalent bond with the amino group (–NH2) on the substrate. The coating presents long-term stability, as proved by water contact angles, which were stable at 12 ± 1° after exposing the coating in ambient environment for 60 days or immersing in deionized water for 24 h. In addition, the underwater oil contact angle measurement demonstrated that an oil stain on the zwitterionic poly(SBMA-co-AA) polymer coating can be easily removed upon contact with water, showing self-cleaning performance. These properties verified that the zwitterionic multifunctional coating exploited in this research has many potential application prospects, including construction, automotive, aerospace, shipbuilding, biomedical, and other optical fields.Graphic abstract
研究领域:
材料科学
·
表面工程
·
高分子化学
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高影响因子
危险品化学品经营许可证（带存储）