COLD REGIONS SCIENCE AND TECHNOLOGY
·
2022
·
IF 4.427
Haoxia Ma,Haiyan Ma,Hongfa Yu,Bo Da,Wei Gong,Na Zhang
Ethylene glycol (EG) deicer and propylene glycol (PG) deicer were frequently used as the aircraft de-icing fluids in cold region. In this paper, the icing pressure ( I p ), icing volume expansion rate (Δ V P ), freezing point ( T 0 ) and under-cooling ( △T ) of aircraft deicers with different concentrations were investigated, and the above indicators of aircraft deicers were also compared with that of water and NaCl deicers. The results showed that the icing volume expansion of deicers was the direct cause of icing pressure. During the cooling process, values of I p and Δ V P firstly increased sharply, then slowly, and finally became stable. The stabilized values of I p and Δ V P decreased with concentration. The stabilized I p value of EG deicer was slightly higher than that of 3.5% NaCl deicer and far greater than 3.5% PG deicer. Of all the tested deicers, the stabilized Δ V P value of NaCl deicer was the highest and that value of EG deicer was close to that of PG deicer. The results further confirmed the feasibility of using impulse of icing pressure as the indicator to evaluate the freeze-thaw deterioration to concrete.
研究领域:
材料科学
·
航空工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Huimin Ruan,Lu Yu,Yuyang Yao,Junhua Li,Jianlang Yan,Junbin Liao,Jiangnan Shen
The development of antifouling ion exchange membranes (IEMs) is of great significance to the application of electrodialysis (ED). Membrane fouling is a ticklish question affecting the membrane performance, which results in an increase in energy consumption in ED and unnecessary economic loss. In this work, we report poly(vinyl alcohol) (PVA) as an IEM substrate; a large number of hydroxyl groups on the aliphatic chain react with a small rigid molecule of 4-(bromomethyl)benzaldehyde (QBMB) prepared by us and then adjust the time of quaternization by trimethylamine to design a series of antifouling anion exchange membranes (AEMs) named PVA-QBMB-X (X = 2, 4, 6, and 12). The as-prepared AEMs with a cross-linking structure within the matrix exhibit low surface area resistance and reduced swelling ratios of <16.2%. The optimized PVA-QBMB-12 AEM shows better antifouling performance in terms of a much longer transition time (1150 min) than commercial membrane AEM-Type-II (620 min) by possessing excellent hydrophilicity and superior ED performance compared with the commercial membrane. The optimized AEM shows a superior NaCl removal rate of 99.80 ± 1.5%, a current efficiency of 82.64 ± 0.8%, and an energy consumption of 2.98 ± 0.3 kWh kg–1 NaCl, which are better than those of AEM-Type-II (97.51 ± 1.5, 76.26 ± 0.7%, and 4.54 ± 0.6 kWh kg–1 NaCl, respectively). Thus, the investigation demonstrates the potential application of the as-prepared AEMs for ED in organic pollutant systems.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2021
·
IF 6.141
Haoxia Ma,Hongfa Yu,Yongshan Tan,Bo Da
Acetate-based deicers are frequently used as airport pavement de-icing fluids in cold regions. In this study, the ice pressure ( I p ), icing volume expansion rate ( Δ V P ), freezing point ( T 0 ), and undercooling degree of acetate-based deicers were investigated. The above mentioned indices were also compared with that of water and NaCl deicers. The results showed that the cooling process and ice crystal growing process of acetate-based deicers could be divided into five stages. Additionally, the stabilised values of I p and Δ V P decreased with the deicer concentration increases. Furthermore, the impulse concept of ice pressure ( IPI ) was proposed to evaluate the frost damage of concrete caused by deicers. The I p , Δ V P , and T 0 values of calcium magnesium acetate (CMA) deicer with different Ca/Mg mole ratios (i.e. 1/1, 0.91, 7/3, and 3/7) were tested in the ice pressure test. The value of CMA deicer with 3/7 Ca/Mg mole ratio was the lowest. However, the I p values of CMA deicers with 0.91 Ca/Mg and 1/1 Ca/Mg mole ratios were the highest. Among all the tested acetate-based deicers, CMA deicers had the lowest values of I p , Δ V P , and IPI . Moreover, the CMA deicer with 3Ca/7Mg mole ratio was recommended for deicing airport pavements to reduce the concrete frost deterioration caused by acetate-based deicers. In this study, we investigated the physical properties of acetate-based deicers, quantitatively analysed the destructive power of deicers in a freeze–thaw test, and studied the cause of freeze–thaw deterioration of concrete. Overall, this study provides a theoretical method for exploring new deicers.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Mechanical Behavior of Biomedical Materials
·
2019
·
IF 3.485
Jingmin Chen,Hongmei Yang,Jiusheng Li,Jinyang Chen,Yadong Zhang,Xiangqiong Zeng
Human skin interacts with various materials in our daily life. The interaction between human skin and contacting materials is very important for the development of skin contacting products. Owing to the ethic and different testing results because of the using of in vivo or ex vivo skin, it is important to develop an artificial skin model (ASM) for the study. Therefore, an ASM mimicking the deformation and friction behavior of in vivo human skin was designed based on the evaluation of in vivo human skin behavior, and its frictional interaction with wound dressings was studied. The ASM was prepared by the combination of hydrophilic network carboxyl chitosan (CC) and hydrophobic network polydimethylsiloxane (PDMS). The influence of ingredient ratio, including PDMS/CC and curing agent/PDMS ratio, on the mechanical property of ASM was determined firstly. By adjusting the curing agent/PDMS ratio, the water absorption swelling rate (WASR) of ASM could be controlled to mimic different hydration status of human skin. With the changing of ingredient ratio and hydration level, the elastic modulus and viscoelasticity of ASM can be tailored to be similar to that of in vivo human skin. When the PDMS/CC ratio was 7:3, and PDMS/curing agent ratio was smaller than 1:30, the elastic modulus of ASM was in the range of in vivo inner forearm, and with the increasing of indentation depth, the elastic modulus decreased. Based on the ASM, the frictional interaction between skin/wound dressing/mattress was studied. It was found that although the friction using ASM was slightly higher than that using in vivo inner forearm, but the friction decreasing trend was the same for different kinds of wound dressings. In addition, the friction tested with ASM was less fluctuation, more reliable and reproducible than that tested with in vivo skin, indicating that the ASM was suitable to be used for the studying of frictional interaction between skin and product, such as wound dressings.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 133
·期 46
·
IF 1.866
Si Chen,Bo Zhou,Meng Ma,Bozhen Wu,Yanqin Shi,Xu Wang
In this article, we report a novel physical and chemical composite foaming system, which was used to successfully prepare high-performance and low-cost composite superabsorbent [poly(sodium acrylic acid) (PAA–Na)] hydrogels based on acrylic acid by free-radical polymerization in a water bath under a nitrogen atmosphere without the use of any organic solvents. The prepared hydrogels showed superabsorbent properties, high water-absorption abilities and swelling rates, a lighter packing density, and a multiporous microstructure. Fourier transform infrared spectroscopy and scanning electron microscopy revealed that the sodium dodecyl sulfate surfactant, sodium bicarbonate chemical foaming agent, and 1,1,2-trifluorotrichloroethane physical foaming agent were evenly distributed and grafted onto the PAA–Na matrix. Water-absorption, swelling rate, and packing density testing confirmed that the superabsorbent had a high water-absorption ability and swelling rate and a lighter packing density. Furthermore, we investigated the effects of different foaming agents, including chemical and physical foaming agents, on the swelling and water-retention capabilities of the superabsorbent hydrogels (SAHs).The results show that the combination of these foaming agents significantly improved the water-absorbing capacity. With the help of these foaming agents, we obtained PAA–Na hydrogels without any organic solvents for posttreatment or special porogens; this is an environmentally beneficial way to prepare SAHs for hygiene and biomedical products. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44149.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Kaihe Lv,Jiajun Dai,Jinsheng Sun,Han Jia,Chao Zhang,Xianbin Huang,Jundi Shang
Shale hydration expansion is a serious challenge in drilling fluid technology as it undermines oil and gas extraction efficiency. Swelling clay particles compromise wellbore stability and increase drilling costs. Therefore, the development of highly effective drilling-fluid shale inhibitors is urgently required. This study investigates the potential of Janus silica nanoparticles (JNPs) as novel shale inhibitors. JNPs with both hydrophilic and hydrophobic characteristics were synthesized using the Pickering emulsion method. Their inhibitory properties were evaluated and compared with those of traditional inhibitors, namely potassium chloride (KCl), polyether amine (PA), and silicon dioxide (SiO 2 ), using rheological and filtration performance, bentonite inhibition, linear swelling, and shale cutting hot-rolling recovery tests. JNPs had no significant impact on the rheological properties of the drilling fluid and notably reduced filtration loss while demonstrating superior performance at a low concentration of 0.5 wt%. This concentration reduced the linear swelling rate of bentonite from 103.1 % to 40.2 % and enhanced shale cutting recovery to 60.7 % at 160 ℃. Based on contact angle measurements, scanning electron microscopy observations, molecular dynamics simulation, ζ-potential measurements, X-ray diffraction analysis, and liquid level and capillary pressure measurements, it was proposed that the superior inhibitive performance of JNP arose from its ability to compress the electrical layer, block nanopores, and alter wettability. The novel JNPs exhibited considerable potential as an effective inhibitor of water-based drilling fluids for shale oil and gas drilling.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
·
2022
·Vol. 47
·期 9
·11793-11805
·
IF 2.807
Lan Lefang,Lu Xiaobin,Zheng Yancheng,Zhang Guoqing,Cheng Zhe
Cationic Gemini surfactants which were synthesized from long carbon chain alkyl tertiary amines and 1,3-dibromopropane, and polyether ammoniums as clay stabilizers which were synthesized by the reaction of polyether ammine (D230) with formic acid and hydrochloric acid, named as D230FA and D230HC, respectively, were used to preclude hydration expansion and migration of clay minerals in low permeability oilfields, hence facilitating the water injection and oil recovery from the tight reservoirs. The surface tension and interfacial tension (IFT) of surfactants, anti-swelling property of clay stabilizers and the injection performance of the composite system were evaluated in this study. The experimental results show that C14-3-C14 has high interfacial activity and solubility, and the composite system of C14-3-C14 and polyether ammonium salt has good clay stability. The anti swelling rate of Na-clay treated by the solution of 1.5% KCl + 0.1% C14-3-C14 after 10 times of washing with distilled water decreased from 72.6% to 28.0%. While 1% D230FA and 1% D230HC mixed with 0.1% C14-3-C14 + 0.5% KCl have the initially anti swelling rates of 72.1% and 68.3%, and the anti swelling rates after flushing with distilled water reach 61.2% and 58.3%, respectively, indicating good anti-swelling durability . Core flooding experiments show that the injection performance of the composite system depends on the contact angle ( θ ) and the surface tension ( γ ), and the composite system contained 1% D230HC with lower value of γ cos θ has better injection performance than that of 1% D230FA. XRD analysis shows the lower interlayer spacing of clay minerals treated with clay stabilizer solution containing polyether ammonium salts.
研究领域:
石油工程
·
表面化学
·
材料科学
✓ 已验证
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Chaoran Yang,Caoyu Guo,Boyan Gao,Marcin A. Kurek,Yuge Niu,Liangli Yu
Natural polymer hydrogels formed by polysaccharides and proteins can be protective carriers for Monascus pigment (MPs) in the food industry. In this study, in order to enhance the mechanical properties of the hydrogel and its ability to protect MPs, we introduced polyphenols as bifunctional components into the hydrogel carrier. This hydrogel carrier consisted of gallic acid (GA) grafted pectin (LPG) and gelatin. The results showed that the grafting of GA enhanced the affinity between MPs and pectin. A more compact network structure formed by pectin under the interaction of MPs with GA improved the mechanical properties of the hydrogel carriers. With the combination of GA with MPs, the gelation rate of the hydrogel carrier was accelerated, the gel strength increased from 550.07 g to 937.67 g and its water swelling rate decreased significantly from 447.87 % to 311.76 %. Moreover, the multiple pigment protection produced by the GA in the hydrogel greatly reduced the degradation rate of MPs under continuous light expose conditions. The findings provide new insights into developing hydrogel carriers for pigment protection with ideal mechanical properties.
研究领域:
食品科学
·
高分子科学
·
材料工程
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhicheng Liu,Hao Zhang,Huining Su,Yang Chen,Xunan Jing,Daquan Wang,Shaohui Li,Hao Guan,Lingjie Meng
Developing porous hemostatic sponges that are both biosafe and multifunctional remains a complex challenge. Conventional hemostatic techniques often fall short in managing bleeding effectively, leading to severe critical cases such as suboptimal hemostasis, increased infection risk, and complications arising from profuse bleeding. To address these deficits, our study introduces a novel multifunctional nanocomposite sponge that synergistically incorporates chitosan (CS), cellulose (Cel), graphene oxide (GO), and silver (Ag) nanoparticles. The resulting CS/Cel/GO/Ag developed demonstrates a swelling rate exceeding 3000 %, an absorption rate of over 2100 %, and the lowest stress surpassing 20 kPa at an initial 80 % strain. In vitro analyses reveal that the CS/Cel/GO/Ag sponge has excellent cytocompatibility, non-hemolytic nature, and competence in blood cell adherence and bacterial inhibition. In vivo evaluations further demonstrate that compared to conventional hemostatic methods, the sponge substantially enhances hemostatic efficacy, as evidenced by the marked reductions in clotting times and diminished blood loss compared to conventional hemostatic methods. Specifically, the test results of the CS/Cel/GO/Ag sponge across three different models are as follows: for the rat tail amputation model, the clotting time was 99 s, while blood loss was 222 mg; for the rat liver injury model, the clotting time was 129 s. while blood loss was 812 mg; for the rat femoral artery laceration model, the clotting time was 96 s, while blood loss was 758 mg. The compelling attributes of the CS/Cel/GO/Ag sponges position them as a promising solution for the acute management of bleeding. Their excellent performance indicates they have potential role to play in trauma care.
研究领域:
材料科学
·
生物医学工程
·
止血
·
纳米技术
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Yunxi Li,Mina Hoorfar,Kuizhi Shen,Jiyong Fang,Xigui Yue,Zhenhua Jiang
A poly (ether sulphone)-based pore-filling membrane was successfully fabricated and tested against a conventional Nafion-based membrane in direct methanol fuel cells. An amino-containing polymer with a low degree of sulphonation (DS) was synthesized and used as the supporting substrate. The porous substrate was prepared by introducing the porogenic agent (tetrafluoroborate) into the membrane casting solution. The effects of the content of the porogenic agent on the pore morphologies were evaluated using field emission scanning electron microscopy . Then, an epoxy resin was introduced into the porous electrolyte for the first time to minimize the swelling and methanol crossover that resulted from the high degree of sulphonation. In essence, solidification of the amino groups in the substrate results in 3D crosslinking of epoxy resins, which greatly suppresses the swelling and methanol crossover of the composite membranes with enhanced mechanical properties and enhances the thermal and oxidation stability compared to Nafion 117. The resulting composite membrane also shows high proton conductivity that is only slightly lower than that of Nafion 117. However, the selectivity between the proton conductivity and methanol permeability is higher for the composite membranes than that of Nafion 117. The composite membrane also shows a better performance in single cell tests with 10 M methanol.
研究领域:
材料科学
·
电化学
·
燃料电池技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Ziying You,Yue Yu,Tie Hua Wang,Chenglin Wang,Ding Xiong,Yu Shi,Zhenming Wang,Ling Ye
Increased intracranial pressure after traumatic brain injury (TBI) is an urgent problem in clinical practice. A pliable hydrogel is preferred for cranioplasty applications after TBI since it can protect brain tissue and promote bone healing. Nevertheless, biohydrogels for cranial bone regeneration still face challenges of poor mechanical properties, large swelling ratios, and low osteogenesis activity. Herein, inspired by Hofmeister effects, biopolymer hydrogels composed of protein and polysaccharides were treated with a Hofmeister series including a series of monovalent and divalent anions. Our results reveal that the divalent anion-cross-linked biohydrogels exhibit stronger mechanical properties and lower swelling ratios compared with monovalent-anion treated gels. Intriguingly, the divalent HPO42– anion induced biohybrid hydrogels with excellent mechanical behaviors (3.7 ± 0.58 MPa, 484 ± 76.7 kPa, and 148.3 ± 6.85 kJ/m3), anti-swelling capability (16.7%), and gradual degradation ability, significantly stimulating osteogenic differentiation and in vivo cranial bone regeneration. Overall, this study may provide new insights into the design of biomimetic hydrogels for treating cranial bone defects after TBI.
研究领域:
生物材料
·
组织工程
·
生物医学工程
·
再生医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2024
·
IF 6.3
Hongzhen Liu,Shuting Cao,Zelin Liu,Junyan Wang,Yuetao Liu,Lishui Sun,Chuanhui Gao
Polyurethane adhesives have been widely used in industrial production and daily life for their excellent properties. With the urgent need for social progress, the intelligent responsiveness of polyurethane adhesives has become more and more important. Here, we demonstrate a stimulus-responsive polyurethane adhesive. Starting from the structural design, sulfur (S 8 ) is added into the polyurethane adhesive for the first time using the inverse vulcanized mechanism, and the controllable disassembly response of the polyurethane adhesive under the condition of thermal stimulation is realized. In addition, the stimulus response of the adhesive can also be activated through the permeation process of methoxide anion (CH 3 O − ), and the rapid disassembly response property is displayed in the methanol solution of CH 3 ONa, to realize the recovery of the bonding substrate. Simultaneously, the implementation of the inverse vulcanized mechanism imparts the adhesive with a diminished water absorption swelling rate and heightened cross-link density. On the surface of the metal substrate, it shows excellent bonding properties, with a lap shear adhesion strength reaching 2.8 MPa. It is worth noting that the adhesive also exhibits excellent underwater durability. After 36 h of underwater soaking treatment, its adhesion can still be maintained at 2.4 MPa. This work reveals the mechanism of rapid disassembly of polyurethane adhesives at the molecular level. By density functional theory (DFT) calculation, it is found that the minimum bond energy of the S-S bond in a polyurethane adhesive system is 134 KJ·mol −1 , and the disassembly response can be triggered by heating to 53.79℃. At the same time, the mechanism of the disassembly response induced by CH 3 O − is further analyzed using an electrostatic potential (ESP) diagram. This work utilizes sulfur (S 8 ) and castor oil (CO) as raw materials, which can be sourced from industrial or agricultural by-products. It breaks away from traditional polyurethane adhesive preparation methods and offers a "green" strategy that can be synthesized through a solvent-free one-pot process, thus providing a new way of thinking about obtaining sustainable polymers from industrial and agricultural by-products.
研究领域:
材料科学
·
化学工程
·
环境科学
·
聚合物化学
✓ 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）