Environmental Science-Water Research & Technology
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2019
·Vol. 5
·期 10
·1736-1747
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IF 4.195
Chuanchuan Cui,Shuguang Zhang
In order to control the formation of inorganic calcium scale and improve the environmental benefits of coal water slurry, a non-phosphorus-containing and multipurpose copolymer IA–AMPS–APEG was successfully prepared. The chemical structure, molecular weight and thermal stability of the copolymer were characterized by FTIR, GPC and TGA. FTIR confirmed that the structure of the copolymer was consistent with the expected structure. The results of GPC and TGA showed that the copolymer's number average molecular weight was 31 870, and it had excellent thermal stability. The scale inhibition performance of the copolymer was investigated to determine the optimal synthesis conditions: n(IA) : n(AMPS) : n(APEG) = 1 : 2 : 0.33, the dosage of initiator is 4% of the total mass of the monomers, and the reaction temperature and time were optimized to 80 °C and 4 hours, respectively. The maximum scale inhibition efficiencies against CaCO3 and CaSO4 scale deposits were 94.35% (24 mg L−1) and 85.69% (22 mg L−1). Morphologies and crystal structures of the scale deposits were studied with SEM, TEM and XRD techniques. The results demonstrated that the surface morphologies and crystal structures of the inorganic scale deposits were significantly destroyed by the copolymer. In addition, the prepared coal water slurry using IA–AMPS–APEG as a dispersing additive had a high concentration, low viscosity, and good fluidity and stability. In short, the novel and multifunctional copolymer in this work is considered to be an increasingly promising candidate not only as a scale inhibitor in cooling water and reverse osmosis systems but also as a dispersant used in the preparation of coal water slurry.
研究领域:
环境科学
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材料化学
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2018
·
IF 2.795
Qingwu Long,Jiaqi Huang,Shu Xiong,Liang Shen,Yan Wang
FO technology has attracted growing attention in water treatment and desalination applications recently. The development of a suitable draw solute with high performance and low cost is therefore in high demand to facilitate practical FO applications. In this study, two oligomeric carboxylates — poly maleic acid sodium (PMAS) and poly(itaconate-co-acrylate) sodium [P(IA-co-AA)] with controllable molecular weights of 400–1000 Da, are synthesized via one-step polymerization and employed as novel draw solutes for FO applications. The successful synthesis is confirmed via by various characterization techniques. The osmotic pressure, relative viscosity and FO performance of PMAS and P(IA-co-AA) draw solutions with different concentrations are studied systematically. Two types of FO membranes are employed, and their performance is compared using PMAS draw solution. With 0.5 mol/kg PMAS draw solution and DI water feed solution, high water fluxes of 30.6 and 62.4 LMH can be achieved using HTI-TFC and homemade PSf-TFC membrane in the FO tests, respectively. 0.5 mol/kg PMAS draw solution is further studied for the desalination of 0.6 mol/kg NaCl solution via FO, with a water flux of 6.63 LMH obtained. The diluted PMAS solution after FO test can be recovered by nanofiltration with a high rejection rate. The excellent performance and available recovery route of the developed oligomeric carboxylates imply their great potential as promising draw solutes for FO applications.
研究领域:
水处理
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材料科学
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环境工程
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DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2021
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IF 5.876
Jiali Huang,Xin Wang,Wenwen Guo,Haoxin Niu,Lei Song,Yuan Hu
Background Eco-friendly thermally insulating cellulose aerogels made from environmentally friendly resources are very attractive in materials chemistry, but the high flammability limits their application. Method Herein, a novel phosphorus-containing flame retardant modifying agent (DOPO-IA) was incorporated into the cellulose nanofiber aerogel and the cellulose composite aerogels were prepared by esterification and followed by a freeze-drying process. Findings The thermal conductivity of the resultant cellulose composite aerogels was in the range of 28.6–31.2 mW/(mK). Meanwhile, the cellulose aerogels modified with DOPO-IA showed significantly enhanced thermal stability, mechanical property, and flame retardant performance compared with the pure cellulose aerogel. The CNF-DI-3 showed a high char residue (19.8 wt%) at 700 °C, which was 187% higher than CNF. Specifically, CNF-DI-3 exhibited remarkable reductions in its PHRR and THR values which were 67% and 60%, respectively, as compared to those of CNF. In summary, it is of significance to synthesize mechanically robust and flame-retardant cellulose aerogels.
研究领域:
材料化学
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环境科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Cai Ling,Dai Yimin,Li Yaqi,Yang Siwen,Wang Junlong,Liu Bo,Ding Xianglong,Zhang Yue-Fei,Li Yan,Wan Li
At present, researchers are committed to studying new intelligent response materials to deal with severe water pollution problems. Using PU sponge as the substrate, dopamine was first modified to construct a rough surface while introducing active groups. The monomer N-isopropylacrylamide (NIPAM) and itaconic acid (IA) were grafted and polymerized onto the polydopamine coating on the sponge surface by vinyltrimethoxysilane (VTMS). The obtained DINA-PU sponge has good temperature response and switchable wettability characteristics, and has good adsorption-desorption cycle function. Moreover, a micro-filtration device was designed to separate heavy (light) oil-water mixtures. The separation efficiency can reach more than 95 % and 99 % for heavy and light oil-water, respectively. In addition, the adsorption capacity of the material for methylene blue (MB) can reach 660 mg·g −1 . The separation efficiency in the oil-water separation-dye adsorption integrated separation experiment can reach more than 99 %.
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
COLLOID AND POLYMER SCIENCE
·
2023
·Vol. 301
·期 5
·445-453
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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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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2016
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IF 4.219
Xinyu Hu,Yongmei Wang,Liangliang Zhang,Man Xu,Wei Dong,Jianfa Zhang
Salecan is a novel water-soluble extracellular β-glucan and possesses excellent physicochemical and biological properties. Here, redox/pH dual stimuli-responsive hydrogel based on Salecan grafted with itaconic acid (IA) and 2-hydroxyethyl methacrylate (HEMA) were prepared using disulfide-functionalized crosslinker N,N - bis (acryloyl)cystamine (BAC) for controlled drug delivery. The introduction of carboxylic groups endows the system with pH-sensitive character, swelling behavior of the hydrogel was conducted by changing the pH and Salecan content. It was demonstrated that DOX was efficiently loaded into the hydrogels and released in a controlled fashion via pH-control and swelling-shrinking mechanism. More importantly, DOX-loaded hydrogels showed dose dependent cytotoxicity toward A549 cell, and efficient cell killing was observed. Furthermore, a key point of this study was that the presence of disulfide linkage in system favored the degradation of hydrogels in the reductive environment. These results highlight the potential of Salecan- g -SS-poly(IA- co -HEMA) hydrogel as a novel system for the controlled release of anti-cancer drugs.
研究领域:
药学
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材料科学
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生物医学工程
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DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2022
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IF 6.206
Hongxuan Yang,Kaili Jin,Helan Wang,Zhuizhui Fan,Tengfei Zhang,Ziqiang Liu,Zaisheng Cai
Hydrophilic anti-fogging coating has become a research hotspot due to its good anti-fogging performance and easy preparation. In this work, a zwitterionic anti-fogging coating with anti-fouling and self-healing properties was prepared by (Methacryloyloxy)ethyldimethyl-(3-sulfopropyl) (SBMA) and Itaconic acid (IA). And the antifogging performance of the coating has been improved due to -COOH from IA. The high light transmittance (over 95%) can be observed after anti-fogging test. We use amide bonds to connect the coating to the glass slide, which greatly improves the water resistance and durability. The coated glass can maintain anti-fogging property after being immersed in water for 7 days or stored for over 200 days. Results show that the anti-fogging coating has good self-healing function and oil stain resistance. The contact angle of the coated glass slide is 8.17°, and shows a good super hydrophilicity. This anti-fogging coating provides great potential for applications in medical, food industry, transportation .etc.
研究领域:
材料科学
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表面化学
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产品关联
DOI
高影响因子
Petroleum
·
2026
·
IF 3.5
Qi Feng,Chengwen Wang,Wenjian Yue,Chengli Wang,Tao Song
Cementing in deep and ultra-deep reservoirs often faces the critical challenge of additive degradation in high-temperature environments. Addressing this, 1-vinylimidazole (VM) was incorporated into the copolymerization of N,N-dimethylacrylamide, itaconic acid, and 2-acrylamido-2-methylpropanesulfonic acid to synthesize a tetrapolymer (PDVI). Using aqueous free radical polymerization optimized by response surface methodology, the resulting PDVI exhibited superior fluid loss reduction in high-temperature and high-salinity conditions. Compared to the control sample PDI, PDVI reduced fluid loss from 64.7 mL to 25 mL at 200°C and from 105.7 mL to 42.5 mL at 240°C, while maintaining filtration below 70 mL in 20% NaCl. Structural characterization via 1 H-NMR and FTIR, combined with TGA and aging tests, confirmed that VM’s rigid five-membered ring significantly enhanced thermal stability; molecular weight retention after aging at 220°C increased from 46.13% to 68.31%. Furthermore, DLS, SEM, and zeta potential analyses indicated that VM’s cationic nature facilitates robust polymer adsorption on cement particles. This mechanism ensures effective particle dispersion and the formation of a dense filter cake even under extreme conditions. These findings provide essential insights for developing high-performance polymeric additives for cementing in complex downhole environments.
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Yunlong Chen,Chang Xu,Wei Lu,Jinliang Li,Jinhu Li,Yang Li,Ting Wang
Coal-induced APS activation enables in-situ gelation within the coal matrix. • DSS retains multiscale penetration before gelation at approximately 63 h. • EPR and APS-consumption tests support coal-induced radical generation. • Total and respirable dust generation fell by 76.46% and 88.91%. • Gelation, pore plugging, and bonding enabled durable source dust control. To address rapid moisture loss after conventional coal seam water injection and the poor coordination between penetration and gelation of traditional gel dust suppressants, an injectable P(SA-co-IA) semi-interpenetrating polymer network (semi-IPN) dust suppressant with coal-induced in-situ gelation was developed. A prepolymer solution containing short-chain P(SA-co-IA) prepolymers and residual reactive monomers was supplemented with ammonium persulfate (APS) and N,N′-methylenebisacrylamide to obtain the dust suppressant solution (DSS). After entering the coal matrix, intrinsic electron-donating functionalities activated APS, triggering radical generation and in-situ crosslinking. L NMR showed that DSS penetrated multiscale pores and approached a stable distribution after approximately 60 h. With an additional APS dosage of 8.47 wt%, gelation occurred at approximately 63 h, providing a compatible penetration–gelation window. Peroxide concentration tests, EPR, FTIR, rheological measurements, gel fraction, and SEM–EDS confirmed coal-induced APS activation and semi-IPN hydrogel formation. After 12 h, the water evaporation rate of DSS-treated coal was approximately 30%. After 72 h, total and respirable dust-generation rates decreased by 76.46% and 88.91%, respectively. BET, SEM, and molecular dynamics simulations indicated that pore plugging, surface coating, hydrogen-bond adsorption, and particle bonding enhanced coal structural stability and reduced dust generation at the source. Download: Download high-res image (243KB) Download: Download full-size image
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DOI
高影响因子
Food & Function
·
2019
·Vol. 10
·期 6
·3379-3385
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IF 3.241
Qi Chen,Hongxia Yang,Yan Li,Xiaoxi Wang,Lixin Wei,Yuzhi Du
Studies have shown that gelatin is not only a good hemostatic material, but also a food additive with potentially broad use. Yak skin gelatin is a new gelatin resource, but its oral coagulant effects have not been studied. Given the central role of platelets in hemostasis, in this study we examined the pharmacodynamical differences between different molecular Yak skin gelatins on platelet activation. The hemostatic effects of Yak skin gelatins with different molecular weight distributions were evaluated for bleeding time (BT), clotting time (CT), and platelet activity by measuring the contents of P-selectin, platelet membrane glycoprotein Ia/IIa (GP Ia/IIa), platelet membrane glycoprotein IIb/IIIa (GP IIb/IIIa), and platelet membrane glycoprotein IV (GP IV). Intragastric administration of Yak skin gelatin resulted in a significant reduction in CT and BT, and an increase in the contents of P-selectin, GP Ia/IIa, GP IIb/IIIa, and GP IV in all groups in comparison with the control group. The strongest activation of platelets by Yak skin gelatin was observed with size between 0.1 μm and 0.22 μm, and activation may have been in response to improving GP IIb/IIIa and GP IV levels. When measuring the levels of an established indicator of platelet activation, platelet activation-dependent granule membrane protein (CD62P), its promotion was observed for all molecular weight ranges of Yak skin gelatins. In brief, Yak skin gelatin has hemostatic effects, and Yak skin gelatin fractions between 0.1 μm and 0.22 μm are the primary effectors of hemostasis via promoting platelet membrane glycoprotein activities and strengthening platelet function.
研究领域:
药理学
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止血
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血小板功能
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DOI
PubMed
高影响因子
APPLIED CLAY SCIENCE
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2022
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IF 5.907
Qinglu Chang,Guoqing Liu,Zhanpeng Dong,Xia Miao,Miaomiao Hu,Jintang Guo
Fluid loss agent (FLA) was adopted to reduce the fluid loss of cement paste to ensure the safety of cementing construction. With the increase of exploration depth, FLA applied at high temperatures has been urgently required. To meet the cementing requirements at 240 °C, the FLA with organic/inorganic intercalated microstructure was prepared. Anionic polymer FLA (ADIS) was comprised of 2-acrylamido-2-methylpropane sulfonic Acid (AMPS), N , N -dimethylacrylamide (DMAA), Itaconic acid (IA) and Sodium p-styrene sulfonate (SSS). The organic-inorganic hybrid FLA (MgAl-ADIS-LDH) was prepared via intercalating ADIS into Mg/Al hydrotalcite (MgAl-NO 3 -LDH) interlayers . The intercalated microstructure was observed by SEM , TG results exhibited that the intercalation of polymer ADIS in MgAl-NO 3 -LDH enhanced the thermal stability of overall FLA. When applied in cement, the cement with MgAl-ADIS-LDH showed a small water loss of 36 mL at 240 °C. Moreover, the structure avoided the decrease in the compressive strength of hardened cement resulted from traditional polymer FLA. Compared with the cement contains 1.6% bwoc ADIS, the compressive strength of specimen with MgAl-ADIS-LDH increased by 20.5% after cured for 3 days.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
Theranostics
·
2025
·Vol. 15
·期 5
·1896
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IF 13.3
Yang Zhang,Miaowen Jiang,Ming Wei,Chuanjie Wu,Yiming Huang,Baoying Song,Yi Xu,Hongkang Zhang,Yunong Shen,Di Wu,Yufeng Zheng,Ming Li,Xunming Ji
The neuroprotection of acute ischemic stroke (AIS) patients to alleviate the reperfusion injury is a long-standing problem. Although the intra-arterial selective cooling saline infusion (IA-SCSI) is a promising technique to improve the outcome of AIS, the clinical results are not sufficiently satisfactory. Magnesium-containing solutions such as magnesium sulfate (MgSO 4 ) can protect cells by modulating the intracellular Ca 2+ content in damaged cells, suggesting that they could be hypothermia infusion solution. In this study, we hypothesized that MgSO 4 , as a novel hypothermia infusion solution (IA-SCMI), can promote AIS recovery. Methods: First, IA-SCMI was performed in rats subjected to the middle cerebral artery occlusion. The effect of combined hypothermia and MgSO 4 treatment on different neurovascular (NVU) cells after oxygen-glucose deprivation/reoxygenation (OGD/R) injury was examined. Results: Compared with the IA-SCSI or IA-MgSO 4 infusion alone, IA-SCMI offered the best protective effect by improving neurological defects, and alleviating brain integrity damage and CBF reduction. Meanwhile, in vitro results revealed that the combination of hypothermia and MgSO 4 provided maximum protection to the NVU cells, and this protective effect was mainly achieved through the regulation of Ca 2+ homeostasis in different cells. Conclusion: MgSO 4 may be a promising hypothermia infusion solution to facilitate the recovery of neurological function in AIS patients.
研究领域:
神经科学
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中风治疗
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药理学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）