LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Mengjing Zhou,Bin Li,Aolin Wu,Zhigang Hu,Li Zhou,Hao Hu,Dandan Fu
In the preparation of bigels, wax is commonly used to create oleogels. However, oleogels made with wax typically have high melting points, which restrict their applicability and performance in practical applications. This study investigates the eutectic phase behavior of beeswax (BW) and rice bran wax (RBW) in bigels after ultrasonic treatment by varying their ratio. A bigel with a lower melting point was also prepared. The results indicated that eutectic phase behavior occurred between beeswax (BW) and rice bran wax (RBW) at a 6:4 ratio, reducing the gel's melting point to 53.4 °C. This was approximately 13.07 °C lower than that of wax mixtures with other ratios. X-ray diffraction (XRD) results showed that the β′-type crystal structure in the oleogels was often used in the food field. Fourier transform infrared spectroscopy (FTIR) analysis showed that the eutectic phase behavior enhanced the formation of intermolecular hydrogen bonds. Rheological analysis revealed that the bigel exhibited shear thinning behavior and gel network characteristics during the frequency sweep. Notably, the eutectic phase behavior significantly enhanced the gel strength and stability.
研究领域:
食品科学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Shikun Tong,Kele Yan,Jianbo Zhang,Zhiyuan Wang
Hydrate and wax phase transitions are typical flow risks during oil and gas development. The wax on hydrate formation was systematically studied based on dual-scale experimental platform. The sensitivity analysis on hydrate growth illustrates that the wax inhibits hydrate growth and the maximum reduction of hydrate growth rate is 79.6 % in waxy emulsions, and the wax on hydrate conversion ratio decreased the most by 27.2 %. The promoting effect of water content, subcooling, and stirring rate on hydrate growth increased by more than 10 times, 2 times, and 7 times, respectively. The droplet size first decreases and then increases as the wax concentration increases in emulsions. The mechanism of hydrate growth in waxy emulsions considers bidirectional growth and pores renewal of hydrate particles, and the mean error of the prediction model is 8.4 %. This work provides data basis and theoretical foundation for flow assurance management in oil and gas filed.
研究领域:
石油工程
·
化学工程
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2021
·
IF 3.605
Penghao Guo,Guangchun Song,Yuanxing Ning,Yuxing Li,Wuchang Wang
In deepwater oil and gas transportation processes, natural gas hydrates (NGHs) can form easily in pipelines considering the suitable temperature and pressure conditions and therefore lead to pipeline plugging. In water- and wax-containing oil systems, waxes can coexist with hydrates and thus contribute to even more severe challenges to deepwater pipeline flow assurance. In the present work, to investigate the effects of wax on hydrate growth at the oil–water interface, several micro experiments were performed in an atmospheric visual cell. According to the micro experimental phenomena, the morphology, porosity, wetness, and growth rate of the hydrate shell were studied and the effects of wax on hydrate growth were investigated. In experiments, two kinds of hydrate shells with different morphologies, porosities, and amounts of wetness were observed. Wax was found to have little effect on the morphology of the hydrate shell. However, wax molecules could remarkably influence the shape of the hydrate shell when the wax content ranged from 1 to 2 wt %. Moreover, wax molecules and crystals can influence the hydrate shell growth rate in terms of interfacial tension, medium concentration, mass/heat transfer resistance, and nucleation sites. The results in this work could provide guidance for hydrate management in wax-containing systems.
研究领域:
石油工程
·
化学工程
✓ 已验证
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2025
·
IF 6.6
Mengjing Zhou,Bin Li,Aolin Wu,Jiawei Li,Jinming Tang,Ying Wang,Zhigang Hu
In this study, we used beeswax and rice bran wax as oleogelators. We used gelatin as a hydrogelator for the hydrogels. Then, we checked the bigels' thermal, mechanical, rheological, and freeze-thaw properties with different mixes of hydrogel and oleogel. As the tests went on, it was found that when the ratio of hydrogel to oleogel was 6:4, the BG5 bigel had a water-oil bicontinuous phase. The Fourier transform infrared spectroscopy (FTIR) analysis indicated that the hydrogel and oleogel parts each had their own unique peaks. This pattern is similar to the lipid profile of butter. The storage modulus (G′) and loss modulus (G″) of the bigel changed in a way that wasn't linear as the hydrogel content went up. This indicated that the ratio of hydrogel to oleogel had a big effect on the bigel's elastic and viscous properties. Tests of freeze-thaw stability indicated that the oil holding capacity (OHC) went up significantly as the hydrogel content went up. Following three freeze-thaw cycles, the OHC values for BG2 to BG6 were 71.62 ± 1.03 %, 75.1 ± 0.36 %, 76.0 ± 0.02 %, 80.53 ± 1.85 %, and 99.60 ± 0.39 %. This study proposes a bigel preparation method with excellent structural and freeze–thaw stability, providing a new approach and technical support for the development of butter alternatives in low-fat food systems.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Grass Research
·
2026
·Vol. 6
·期 1
·
IF 2.2
Yue Zhu,Keke Cao,Michael J. Christensen,Xingxu Zhang
Achnatherum inebrians is a perennial plant belonging to the Poaceae, subfamily Pooideae, which often forms a symbiosis with fungal endophytes of the genus Epichloë. In this study, E. gansuensis-infected (E+) and E. gansuensis-free (E−) A. inebrians were inoculated with Blumeria graminis (pathogen-inoculated, P+; non-inoculated, P−) under greenhouse conditions. Gas chromatography-mass spectrometry (GC-MS) and transcriptome sequencing were combined to characterize the response of the leaf cuticular wax of A. inebrians plants with and without the Epichloë endophyte to B. graminis stress. The present results revealed that the predominant components of the cuticular wax of A. inebrians leaves under the Epichloë endophyte and B. graminis treatments were hydrocarbons, esters, and fatty acids. The total cuticular wax and ester contents of the E+ and E− A. inebrians leaves significantly (p < 0.05) increased under the B. graminis treatment, but the total cuticular wax and ester contents of the E+ leaves were greater than those of the E− plants. Through transcriptome analysis, 15 genes that were differentially expressed and related to cuticular wax biosynthesis were identified, including fadD, fadF, TER, SSI2, BiP, CER1, FAR, and KCS.
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Yuemei Zhao,Enzhou Liu,Jun Fan,Bo Chen,Xiaoyun Hu,Yudong He,Chunliang He
A superhydrophobic polyester textile (SPT) with easily repairable ability was obtained by modifying pristine textile (RT) with PDMS and paraffin wax under 120 °C, the textile fiber became compact and exhibited clear micronano structures by a strong interact of PDMS/wax and textiles. The as prepared textiles exhibit satisfactory stability after mechanical abrasion and chemical-corrosion. Furthermore, the coated textiles possess excellent self-cleaning ability and could be used to selectively separate various kinds of oil-water mixture. More interestingly, the fabric can recover its super liquid-repellent property after drying at room temperature even after immersing in water for a week. This work provides a facile strategy to prepare an environment safety superhydrophobic polyester textile for practical utilization.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2019
·
IF 6.277
Yunbo Zhang,Wei Lv,Zhijia Huang,Guangmin Zhou,Yaqian Deng,Jun Zhang,Chen Zhang,Boyu Hao,Qi Qi,Yan-Bing He,Feiyu Kang,Quan-Hong Yang
The reviving use of lithium metal anode (LMA) is one of the most promising ways to upgrade the energy density of lithium ion batteries . In the roadmap towards the real use, besides the formation of the dendrite, various adverse reactions due to the high activity of LMA when exposed to air or the electrolyte limit its practical applications. Learning from the packaging technology in electronic industry, we propose a wax-based coating compositing with the ion conducting poly (ethylene oxide) by a simple dip-coating technology and the prepared LMA is featured with an air-stable and waterproof surface. The LMA thus remains stable for 24 h in ambient air even with the relative humidity of 70% while retaining about 85% its electrochemical capacity. More importantly, the LMA is accessible to water and when dipping in water, no obvious adverse reactions or capacity decay is observed. With the composite coating , a steady cycling performance for 500 h in symmetrical cells and a low capacity decay rate of 0.075% per cycle after 300 cycles in lithium-sulfur batteries assembled with the packaged anode have been achieved. This work demonstrates a very simple and effective LMA package technology which is easily scalable and is very promising for speeding up the industrialization of lithium-sulfur batteries and shows potentials for the large-scale production of air-sensitive electrode materials not limited to LMAs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Kangren Niu,Kuiyan Song
The beeswax used in Chinese traditional hot waxing is expensive and has relatively scarce resources. To provide a low-cost alternative and expand the applications of hot waxing for wood repair and protection, polyethylene wax grafted with maleic anhydride and methyl methacrylate was used for the hot waxing treatment of wood. The surface/interface between wax and wood was characterized by Fourier-transform infrared spectra (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD), and the effects of hot waxing temperature and time on the surface roughness and gloss, hydrophobicity, adhesion and thermal stability of treated wood were studied. The properties were compared with those of wood hot waxed with beeswax. The results showed that the modified polyethylene wax filled the wood cell lumina, cross-linked with the wood matrix, and formed a smooth and continuous wax layer on the wood surface. This greatly reduced the wood surface roughness and improved surface gloss. The hydrophobicity and thermal stability of wood were also improved, and the wax layer adhered well to the wood. When used to hot wax wood samples at 180 ℃ for 40 min, the wood modified with polyethylene wax achieved superior gloss, adhesion, and thermal stability to the wood treated with beeswax.
研究领域:
材料科学
·
木材科学与技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2019
·
IF 4.959
Weijing Cao,Shouyang Zong,Yin Zhang,Fan Qiu,Jun Tang,Zhenning Wu,Jiapan Luan
Amino-grafted and vaterite-contained tricalcium silicate cement (A-V-C 3 S) was composited with 58S bioglass/chitosan/carboxy methyl cellulose (BG/CS/CMC, referred as BGs) to surmount the non-absorbability and infection problems of traditional bone wax. Its material, bioactive, biocompatible and antibacterial properties were systematically characterized. The results revealed that A-V-C 3 S/BGs possessed self-setting, injectable, mechanical and degradable abilities. A-V-C 3 S/BGs (1:1 g/g) was optimum owing to its higher compressive strength (9.91 MPa) and lower pH value (7.6 to 8.1) in the test groups. In vitro immersion experiment demonstrated that A-V-C 3 S/BGs had good hydroxyapatite formation ability, and its excellent cell adhesion, low cytotoxicity and superior cell proliferation were verified by mouse embryonic osteoblast precursor cells in cell tests. Compared with A-V-C 3 S, antibacterial experiment illustrated the significantly enhanced antibacterial property of A-V-C 3 S/BGs to Staphylococcus aureus and Escherichia coli .
研究领域:
生物材料学
·
医学工程
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 7
·8949-8961
·
IF 4.672
Xinfei Fan,Haichao Mu,Yuanlu Xu,Chengwen Song,Yanming Liu
Summary Solar-driven interfacial evaporation is an emerging environmentally-friendly technology to produce freshwater, but the current interface evaporators are restricted by their high cost, complex fabrication processes, and low resistance to environmental conditions. Here, a low-cost and high-efficient evaporator was prepared simply by modifying natural wax gourd with polydopamine (PDA) and silver nanoparticles (AgNPs). The prepared AgNPs-PDA-wax gourd exhibited excellent light absorption (>94%) in the whole solar spectrum (300-2500 nm). Under 1 sun illumination, the prepared evaporator achieved an extraordinary evaporation rate of 1.70 kg m −2 h −1 (efficiency of 83.21%), which was 3.78 and 1.21 times higher than the rates of natural wax gourd and PDA-wax gourd, respectively. Such excellent performance was mainly attributed to the synergic light-to-heat conversion capability between localized surface plasmon resonance effect from AgNPs and enhanced light-adsorption ability from PDA. Due to the presence of AgNPs, the final evaporator also displayed a fascinating antibacterial behavior for both E. coli and S. aureus even during evaporating actual lake water. Meanwhile, the AgNPs-PDA-wax gourd presented good durability during 10-cycled experiments, seawater desalination, dye water purification and some extreme conditions (acid, alkaline and freezing). These results suggested the great potential for future practical applications of such biomass solar evaporators.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 47
·30734-30741
·
IF 4.036
Caihong Su,Yancai Li,Jiabin Zhu,Yuan Gao,Qi Li,Shuangkui Du,Xiuzhu Yu
The present study aimed to decrease the brittleness of flaxseed oleogels based on candelilla wax (CLW) in combination with flaxseed gum (FG). Effects of flaxseed gum concentrations (0–0.4%) on the characteristics of flaxseed oleogels including oil binding capacity, textural, thermal, and rheological properties, and crystal polymorphisms were investigated. Higher concentrations (≥0.2%) of FG significantly decreased the textural parameters (e.g., hardness, fracturability) of oleogels (p < 0.05), suggesting that FG could decrease brittleness. Rheological results indicated that all flaxseed oleogels exhibited solid-like characteristics because the elastic modulus was larger than the viscous modulus. The elastic modulus of flaxseed oleogels presented a maximum value at 0.1% gum concentration. Any increase in gum concentration beyond this concentration decreased the elastic modulus. Increasing FG concentration up to 0.4% decreased the enthalpy of flaxseed oleogels during the melting process. The β′-polymorphic form is an orthorhombic perpendicular (O⊥) subcell structure. Similar β′ crystal forms were observed among flaxseed oleogels, indicating that FG did not affect them negatively. The study showed that the physical properties of flaxseed oleogels based on CLW could be significantly changed by FG addition. These results provided a deeper comprehension of the novel system, which should be considered a new way to obtain healthy fats with better plasticity for food applications.
研究领域:
食品科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2023
·
IF 7.4
Haopeng Zhang,Yanjun Qiu
In recent years, the wax-based warm mix additives are always doped into the asphalt to lower the construction temperatures, which can lead to the substantial energy savings and promote energy sustainability. However, few studies have considered the methods to inhibit the premature precipitation of wax-based warm mix additives in warm mix asphalt, which will deteriorate the cracking resistances of asphalt pavement. This paper introduced a new method from the essence of the phase separation between the wax-based warm mix additives and asphalt leading to the reduction of cracking resistance, which chemically inhibited the premature precipitation of common additives (linear aliphatic hydrocarbon (LAH), polyethylene (PE), fatty acid amides (FAA), and Fischer-Tropsch (F-T) waxes) by wax inhibitors (WIs) to improve the compatibility of additives, and the cracking resistances of warm mix asphalts with addition of WIs were also investigated through the multi-stress creep recovery (MSCR), linear amplitude sweep (LAS), dynamic mechanical analysis (DMA), and thermal fatigue tests. The results show that the wax precipitation temperature (WPT) of warm mix asphalt reduces with the addition of WIs to inhibit the precipitation of additives to improve the compatibility, and the wax inhibition efficiencies of WIs are better with the asphalt doped with short-chain additives at higher content. The WIs can provide the warm mix asphalt with the additional elasticity and decrease the dependency on the applied strain, which increases the high-temperature rutting and intermediate-temperature fatigue resistances. The cracking and thermal fatigue resistances of warm mix asphalt at the low temperature can also be improved after doping with WIs, which is leaded by the precipitation inhibition of additives. Therefore, it is promising to improve the cracking resistances of warm mix asphalts and develop a new energy-saving pavement by chemically inhibiting the precipitation of additives.
研究领域:
土木工程
·
材料科学
✓ 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）