RSC Advances
·
2023
·Vol. 13
·期 9
·5667-5673
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IF 3.9
Bin Li,Haibo Qin,Ming Ma,Xiaojia Xu,Mengjing Zhou,Wenrui Hao,Zhigang Hu
In this paper, betaine (Bet) was used as a hydrogen bond acceptor (HBA), and acrylic acid (AA) and acrylamide (AM) were used as hydrogen bond donors (HBD) and mixed to form a deep eutectic solvent (DES). Different concentrations of β-cyclodextrin (β-CD) were dispersed in the DES, and a novel β-CD/P(AA-co-AM) hydrogel was prepared by frontal polymerization (FP). The characteristic structure and morphology of the hydrogels were analyzed using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM), and the properties of the hydrogels were investigated. The results show that the mechanical properties of the hydrogel were improved by β-CD acting as a second cross-linking agent in the polymerization process, thus increasing the cross-link density of the hydrogel. Because the carboxyl groups contained in the acrylic acid dissociate under alkaline conditions, the composite hydrogel shows excellent pH responsiveness under alkaline conditions. Tetracycline hydrochloride was used as a drug model to test the drug loading and drug release performance of the hydrogels. With the increase of β-CD content, the loading capacity of the hydrogels for tetracycline hydrochloride gradually increased. The data of drug release indicated that the hydrogel has good drug delivery performance and has promising applications in drug delivery systems and other areas.
研究领域:
材料科学
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药学
·
化学工程
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DOI
PubMed
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 33
·22831-22837
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IF 3.9
Bin Li,Wenrui Hao,Aolin Wu,Mengjing Zhou,Qinghua Yan,Heng Zhang,Lihua Su
The present study synthesized a deep eutectic solvent (DES) using acrylic acid (AA), acrylamide (AM), and choline chloride (ChCl), and added phytic acid (PA) as a filler. Subsequently, the PA/P(AA-co-AM) composite hydrogel was prepared under ultraviolet irradiation and used a photoinitiator. Characterization of the hydrogels was conducted using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The study aimed to investigate the impact of PA on the mechanical properties, fatigue resistance, and electrical conductivity of the composite hydrogel. The findings demonstrated that as the mass fraction of PA increased, the compressive strength of the composite hydrogel gradually decreased, yet the fatigue resistance of the composite hydrogel increased. Specifically, after 10 cycles of compression, the resilience recovery rate of FP0 dropped from 86.9% to 70.4%, the maximum stress recovery rate of FP1 dropped from 97.9% to 89.4%, the maximum stress recovery rate of FP2 dropped from 94.4% to 86.6%, and the maximum stress recovery rate of FP3 dropped from 97.3% to 93%. Overall, this study offers a straightforward and efficient method for producing composite hydrogels with both fatigue resistance and electrical conductivity.
研究领域:
材料科学
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高分子化学
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yubo Pan,Linrui Li,Baogang Yang,Guangwei Ji,Zhiren Zhao,Hongling Zhang,Fengyun Wang,Mingzhu Xia,Yu Tao
The rapid development of industries such as new energy and photovoltaic has led to the generation of a large amount of industrial fluorine wastewater, posing serious threats to water environment and human health. To address this issue, MOF-808 adsorbent was synthesized by controlling the synthesis conditions and modifying the ligand structure. Batch adsorption experiments were conducted by varying experimental conditions, including type of adsorbent, pH, wastewater concentration, adsorption time, temperature, and interfering anions. The adsorption behavior of MOF-808-AA towards fluoride ions was well fitted by the Elovich non-linear kinetic model, as well as the Freundlich and Temkin non-linear isotherm models, indicating that the adsorption behavior was influenced by multiple mechanisms other than just intraparticle diffusion. Thermodynamic results suggested a spontaneous exothermic monolayer chemical adsorption process. Under the conditions of pH 6.0 and T = 298 K, MOF-808-AA exhibited a maximum adsorption capacity of 84.65 mg/g for fluoride ions. Characterization techniques, as well as quantum chemical analysis was employed to analyze the adsorption behavior and predict the reaction sites. The potential mechanism can be summarized as the formation of new bonds between MOF-808-AA and the adsorbed fluoride ions, as well as the weak intermolecular interactions such as hydrogen bonding and vdW forces. Furthermore, MOF-808-AA demonstrated satisfactory reusability and excellent chemical stability during the cyclic process. These findings suggest the potential application of MOF-808-AA for removing fluoride ions from wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 5
·656
·
IF 4.9
Miao Li,Yifan Zhang,Zhilin Du,Yao Zheng,Senbiao Liu,Hongjie Luo,Waraz Abdul,Jianfeng Zhu
Soil ruins hold historical significance and serve as witnesses to past civilizations. High temperatures cause soil moisture to evaporate and soil to shrink, leading to cracking issues and making preservation a global challenge. P(AA-AM-AMPS) (Acrylic acid -Acrylamide-2-Acrylamide-2-methy-propenesulfonic acid) composites solve this problem by combining absorbent materials with loess. In this study, P(AA-AM-AMPS) was prepared using a solution method. The water absorption, water retention, air permeability, and compressive strength of P(AA-AM-AMPS) in loess were studied. The results show that after adding P(AA-AM-AMPS) to loess, there is no obvious color difference compared with the blank sample, and the air permeability of the reinforced loess is basically the same as that of the blank soil. After aging resistance tests, the surface cracking of soil clods is significantly reduced compared to that of the blank samples, and their compressive strength improved from 1.8 N/mm2to 2.6 N/mm2.
研究领域:
土力学
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材料科学
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文物保护
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DOI
PubMed
高影响因子
AICHE JOURNAL
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2017
·Vol. 64
·期 4
·1373-1382
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IF 2.836
Qiwei Yang,Shaocong Guo,Xianxian Liu,Zhiguo Zhang,Zongbi Bao,Huabin Xing,Qilong Ren
The selective separation of strongly hydrophilic structurally related compounds in aqueous solutions is a long-standing challenge due to a trade-off between separation selectivity and capacity. This work shows a new method to separate strongly hydrophilic structurally related compounds through hydrophobic ionic solution-based liquid-liquid extraction, with L-ascorbic acid 2-glucoside (AA-2G) and L-ascorbic acid as model compounds. Extraordinary distribution coefficient, superb molecular selectivity, large extraction capacity and good recyclability without using strong acids and salts were all achieved, with a small consumption of phosphonium bromide ionic liquid and aprotic molecular diluent. The essence of this method is the successful combination of both strong hydrogen-bond basicity and good hydrophobicity along with significant preferential solvation phenomena of the constructed ionic solutions. Even if at a high feed concentration of 100 mg/mL, the purity of AA-2G could be greatly elevated from 50% to 96.2% with an ultrahigh yield of almost 100% after five-stage countercurrent extraction. © 2017 American Institute of Chemical Engineers AIChE J , 64: 1373–1382, 2018
研究领域:
化学工程
·
分离科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2021
·
IF 5.909
Wenxu Zhang,Qian Liu,Lulu Guo,Peng Wang,Shengfang Liu,Jing Chen,Ziqiang Lei
In order to reduce the pollution of the bio-waste cabbage to the environment and achieve recycling of biological waste resources, synthesis of a novel superabsorbent polymer gel based on waste cabbage (CB) using two monomers AMPS (2-acrylamide-2-methyl-1-propane sulfonic acid) and AA (acrylic acid). And the synthesis conditions were optimized, such as the ratio of AMPS and AA, initiator content, and crosslinker content. And the water retention, salt resistance and repeated swelling performance were investigated too. The chemical structure thermal stability and microscopic appearance of the superabsorbent polymer gel were investigated by Fourier transform infrared spectroscopy (FTIR), Thermal gravimetric analysis (TGA) and Scanning electron microscope (SEM). The results showed that the novel superabsorbent polymer gel exhibits excellent water absorbency, which can absorb ultrapure water, distilled water, tap water and 0.9% NaCl solution are 1914 g/g, 1726 g/g, 306 g/g and 114 g/g, respectively. This is higher than in related studies 30%− 40% in distilled water, 60%− 70% in tap water and 10%− 20% in 0.9% NaCl solution. Therefore, this superabsorbent polymer gel showed a high swelling property and stable salt resistance. It has a broad application prospect.
研究领域:
环境科学
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材料科学
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生物资源利用
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DOI
高影响因子
DESALINATION
·
2021
·
IF 9.501
Yuxuan Zheng,Yuhua Gao,Haihua Li,Meifang Yan,Junping Zhao,Zhenfa Liu
A biodegradable and non-phosphorus chitosan derivative (CTS-AA-PSI) was synthesized with chitosan, acrylic acid and polysuccinimide, which can be used as a new environmentally friendly scale and corrosion inhibitor . The structure of CTS-AA-PSI was confirmed by FTIR , 1 H NMR and 13 C NMR. The CTS-AA-PSI showed outstanding scale inhibition performance with a scale inhibition rate of 87.96% at the concentration of 25 mg/L. The electrochemical impedance results indicated that CTS-AA-PSI showed a significant corrosion inhibition effect in a 3.5% NaCl solution with a corrosion inhibition rate of 71.17% when the dosage was 500 mg/L. In addition, the biodegradability experiment showed that its degradation rate was 72.32% on the 28th day. It was demonstrated that the CTS-AA-PSI is a readily biodegradable material . The possible scale inhibition mechanism was explored by SEM, XRD , XPS and EEM. The results indicated that the excellent scale inhibition performance of CTS-AA-PSI was related to its chelating and lattice-distortion ability, which inhibited the formation and precipitation of CaCO 3 crystal. These findings suggest that CTS-AA-PSI is a quite promising candidate for an environmentally friendly scale and corrosion inhibitor.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
DESIGNED MONOMERS AND POLYMERS
·
2023
·
IF 1.6
Hongfu Zhou,Wenjing Xie,Anran Guo,Bin Chen,Sanming Hu,Min Zheng,Houqiang Yu,Hongan Tian,Ling Li
Several vascular embolization materials are commonly used in clinical practice, however, having application defects of varying degrees, such as poor intraoperative imaging and easy recanalization of embolized blood vessels, they are challenging for application during Transcatheter arterial embolization (TAE). Thus, an intraoperative visible vascular embolization material with good embolization effect and biocompatibility can improve transcatheter arterial embolization clinical efficacy to some extent. Our study aimed to synthesize a novel vascular embolization material that can achieve complete embolization of arterial trunks and peripheral vessels, namely poly (N-isopropyl acrylamide)-co-acrylic acid nanogel (NIPAM-co-AA). Iohexol 200 mg/mL was co-assembled with 7 wt% NIPAM-co-AA nanogel to create an intelligent thermosensitive radiopaque nanogel (INCA), which achieves a good intraoperative imaging effect and is convenient for transcatheter arterial bolus injection due to its good fluidity and temperature-sensitive sol-gel phase transition. The normal rabbit kidney embolism model further confirmed that INCA could effectively use Digital subtraction angiography (DSA) to achieve intraoperative imaging, and real-time monitoring of the embolization process could avoid mis-embolization and leakage. Meanwhile, in a 42-day study, INCA demonstrated an excellent embolization effect on the right renal artery of New Zealand white rabbits, with no vascular recanalization and ischemic necrosis and calcification remaining. As a result, this radiopaque thermosensitive nanogel has the potential to be an intelligent thermosensitive medical vascular embolization material, providing dual benefits in TAE intraoperative imaging and long-term postoperative embolization while effectively addressing the shortcomings and challenges of commonly used clinical vascular embolization agents.
研究领域:
医学影像学
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介入放射学
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生物材料学
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DOI
PubMed
高影响因子
Polymer Chemistry
·
2013
·Vol. 4
·期 10
·3020-3027
·
IF 5.231
Yangyi Sun,Yuyong Yin,Min Chen,Shuxue Zhou,Limin Wu
This paper presents a one-step procedure for the facile synthesis of monodisperse raspberry-like polymer colloidal particles by soap-free emulsion polymerization of styrene (S), acrylic acid (AA), and 3-(trimethoxysilyl)propyl methacrylate (MPS). In this method, when S, AA, and MPS are mixed with water and stirred at a certain temperature, raspberry-like P(S–MPS–AA) colloidal particles with uniform shapes and sizes could be obtained in a reliable manner. Both the core particles and the smaller corona particles of core surfaces were formed in situ. A mechanism of formation based on the second nucleation induced by MPS-enriched segments on the core surfaces is proposed.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Li Huang,Shangying Qin,Kun Yang,Yuanjin Xu,Xiaocui Wu,Zhongwei Lin,Yilin Wang
The core/shell Au@MnO 2 nanoparticles (Au@MnO 2 NPs) were prepared and characterized by UV–vis spectrum, transmission electron microscopy (TEM) and X-ray photoelectron spectrum (XPS). It was found that MnO 2 in the shell of Au@MnO 2 NPs could oxidize thiamine (VB 1 ) into blue fluorescent thiochrome (TC). The reduction of MnO 2 in the shell layer could lead to a decrease of Au@MnO 2 NPs size along with a blue shift of the localized surface plasmon resonance (LSPR) peak. Once ascorbic acid (AA) was introduced, MnO 2 in the shell was rapidly reduced to Mn 2+ ions. Accordingly, the oxidation of VB 1 was inhibited and the fluorescence of TC was weakened. Based on these phenomena, we have established a dual signal method for AA determination with the help of UV–vis and fluorescence spectrophotometer. Under the optimum conditions, the LSPR absorption peak shift (Δ λ ) of Au@MnO 2 NPs and the decrease in fluorescence of TC correlated well with AA concentration ranging from 0.75 to 17.5 μM. The detection limits of LSPR absorption assay and fluorescence assay were 0.18 and 0.47 μM, respectively. More importantly, this dual-signal detection method has been used for the determination of AA in vitamin C tablets with high accuracy and precision, indicating its promising potential applications.
研究领域:
生物化学
·
分析化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Q. Xu,C. B. Zhang,L. J. Wei,Y. X. Li,W. L. Liang,F. J. Jing,Y. X. Leng
Ureteral stents are employed to relieve ureteral stenosis, but they face challenges including high friction that causes endothelial damage, microbial colonization, and encrustation. The long-term use of ureteral stents usually leads to pain, increased urinary frequency, and even secondary surgery. To address these issues, ureteral stents require lubricating antifouling surfaces to reduce tissue damage, bacterial infection and encrustation. Herein, we report an antifouling and lubricating hydrophilic coating based on the zwitterionic polymer poly(sulfobetaine methacrylate-acrylic acid) (poly(SBMA-AA)) prepared using UV-initiated polymerization. Controlled monomer feed ratios were used to study the antimicrobial and anti-encrustation capacities. The poly(SBMA-AA) coatings were hydrophilic, which facilitated the formation of a hydrated layer, thereby reducing friction. The friction test revealed that the coatings could achieve an initial friction coefficient as low as 0.023. After 15 days of immersion in artificial urine, the coefficient of friction remained stable at approximately 0.027, indicating its long-term lubricity and potential to reduce tissue damage. Furthermore, as the AA monomer molar ratio increased, the coatings exhibited enhanced antibacterial adhesion, and demonstrated superior anti-encrustation performance in a 30-day urinary crystallization model. This study proposes a novel approach for developing multifunctional ureteral stent coatings that integrate long-term lubrication, antibacterial adhesion activity, and anti-encrustation capabilities.
研究领域:
生物医学工程
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泌尿学
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聚合物科学
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表面涂层
·
生物材料
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Zhijie Shang,Pan Xu,Meiling Yao,Kaifan He,Guoxuan Li,Xinxue Li
Synthesis of acrylamide-based polymers with excellent stability is crucial for oilfield applications. In this study, a novel modified silica nanoparticle (MSiO2) obtained by a two-step N-acylation reaction was used as a functional monomer to enhance the stability of poly(acrylic acid (AA)/2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS)/acrylamide (AM)) ternary polymer (NSPM). A novel poly(MSiO2/AA/AMPS/AM) quaternary copolymer (MSPM) was obtained in this manner. The microstructure of MSPM was characterized by Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). The rheological properties of the MSPM were investigated based on the apparent viscosity in different salinities, temperatures, and shear rates. The MSPM exhibited improved stability compared with NSPM when the MSiO2 content was within the range of 0.14–0.20 wt %. This enhancement may be associated with hydrogen-bond-mediated intermolecular associations and MSiO2-centered branched or locally cross-linked structures formed during polymerization. Furthermore, the application of MSPM to gelation experiment showed that the grafting of MSiO2 effectively improved the gel strength of the polymer and prolonged its gel stabilization time from 10 to 14 days. The results of molecular dynamics simulation (MDS) demonstrate that the addition of MSiO2 effectively enhances the interaction between water and MSPM gel, which explains the fact that MSiO2 can reduce the dehydration rate of the MSPM gel.
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高影响因子
危险品化学品经营许可证（带存储）