Food Chemistry-X
·
2024
·
IF 6.5
Sheng Zhang,Sheng Geng,Hanjun Ma,Benguo Liu
The ferulic acid (FA) / monoglyceride (MG) mixture could act as a gelator to structure sunflower oil at the gelator concentration ( c ) ≥ 4 % and the FA/MG ratios ( r ) of 0:100, 25:75, 50:50 and 75:25. The rectangular FA and needle-shaped MG crystals in the oleogel interlock with each other to form a 3D network, restricting the flow of oil. The gel strength and rheological performance of the oleogel were positively correlated with c and negatively correlated with storage temperature ( t ). Its gelation temperature was determined by c and r . Its β-carotene protective ability against ultraviolet irradiation was proportional to the FA concentration. The oleogel with r = 25:75, c = 5 % and t = 4 °C could partially substitute cocoa butter for chocolate production. With the increasing substitution rate (W CBS ), the appearance, texture properties and enthalpy change of chocolate gradually deteriorated. But when W CBS ≤ 40 %, the oleogel had no significant effect on the sensory characteristics.
研究领域:
食品科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Gels
·
2023
·Vol. 9
·期 12
·966
·
IF 4.6
Yinbo He,Mingliang Du,Jing He,Haiyang Liu,Yanhua Lv,Lei Guo,Peng Zhang,Yunhai Bai
Oil-based drilling fluids are widely used in challenging wells such as those with large displacements, deepwater and ultra-deepwater wells, deep wells, and ultra-deep wells due to their excellent temperature resistance, inhibition properties, and lubrication. However, there is a challenging issue of rheological deterioration of drilling fluids under high-temperature conditions. In this study, a dual-amphiphilic segmented high-temperature-resistant gelling agent (HTR-GA) was synthesized using poly fatty acids and polyether amines as raw materials. Experimental results showed that the initial decomposition temperature of HTR-GA was 374 °C, indicating good thermal stability. After adding HTR-GA, the emulsion coalescence voltage increased for emulsions with different oil-to-water ratios. HTR-GA could construct a weak gel structure in oil-based drilling fluids, significantly enhancing the shear-thinning and thixotropic properties of oil-based drilling fluids under high-temperature conditions. Using HTR-GA as the core, a set of oil-based drilling fluid systems with good rheological properties, a density of 2.2 g/cm3, and temperature resistance up to 220 °C were constructed. After aging for 24 h at 220 °C, the dynamic shear force exceeded 10 Pa, and G′ exceeded 7 Pa, while after aging for 96 h at 220 °C, the dynamic shear force exceeded 4 Pa, and G″ reached 7 Pa. The synthesized compound HTR-GA has been empirically validated to significantly augment the rheological properties of oil-based drilling fluids, particularly under high-temperature conditions, showcasing impressive thermal stability with a resistance threshold of up to 220 °C. This notable enhancement provides critical technical reinforcement for progressive exploration endeavors in deep and ultra-deep well formations, specifically employing oil-based drilling fluids.Keywords:gelling agent;oil-based drilling fluid;weak gel;high-temperature resistance
研究领域:
石油工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Suwan Cui,Bohao Qi,Hao Liu,Xiaojun Sun,Rui He,Junshuai Lian,Yiming Li,Jinren Lu,Mutai Bao
Rapid and efficient recovery of oil spill is the key link for oil spill remediation, and also a great challenge. Here, the organogelator-polymerized porous matrix composed of adsorbents and organogelators can provide a new strategy for solving this problem. The gelling mechanism of aluminum 12-hydroxystearate (Al HSA) to form spherical nano micelles in solvents was investigated via UV–vis, FT-IR, and XRD . A creative method for aluminum soap-lignin gelator (OTS-AL/Al HSA) syntheses was put forward through the saponification of 12-hydroxystearic acid (HSA) and lignin via epichlorohydrin (ECH) crosslinking. By adjusting the ECH content, the growth of Al HSA nanoparticles (15–40 nm) on lignin can be realized, and the accordingly increased roughness endowed gelator with better hydrophobicity (WCA of 134.6°) before octadecyltrichlorosilane (OTS) modification. Thanks to the porous structures, the gelator powder exhibited a high sorption capacity in the range of 3.5–5.2 g g −1 for oils and organic solvents. Rheological studies demonstrated high mechanical strength of gels (>1.6 × 10 5 pa) and the gelator still retained 70% sorption capacity after 6 gelation-distillation cycles. The gelation characteristics of OTS-AL/Al HSA were attributed to the rapid sorption of oils by lignin and the self-assembly of Al HSA nano micelles on lignin to form an aggregated network structure trapping oils, thus realizing the synergistic effect of oil sorption-gelation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2022
·
IF 4.132
Haonan Cong,Zihao Ma,Meixi Hu,Junjie Han,Xing Wang,Ying Han,Yao Li,Guangwei Sun
Herein, we developed an efficient and convenient method to address the problem of thickener decomposition in the low- permeability oilfield production process. It is crucial to design breakers that reduce viscosity by delaying thickener decomposition in appropriate environments. By using lignin in biomass as a substrate for β-mannanase immobilization (MIL), we fabricated a gel breaker, surface gelatin-coated β-mannanase-immobilized lignin (Ge@MIL). Through experiments and performance tests, we confirmed that the prepared Ge@MIL can release enzymes at a specific temperature, meanwhile having temperature-sensitive phase change properties and biodegradability. The results also show the tight tuning over the surface coating of Ge@MIL by a water-in-oil emulsion. Therefore, the prepared Ge@MIL has a promising application in the field of oil extraction as a green and efficient temperature-sensitive sustained-release capsule.
研究领域:
石油工程
·
生物技术
·
环境科学
✓ 已验证
DOI
高影响因子
SUPRAMOLECULAR CHEMISTRY
·
2017
·
IF 1.264
Peng Xue,Ting He,Huiqiong Wu,Hongtao Xie,Rujuan Shen,Fan Yue,Jide Wang,Yi Zhang
A tripeptide (β-AspFF) gelator was designed and synthesised using solid-phase peptide synthesis. The as-prepared gelator formed a stable and clear multi-responsive gel in toluene solution. Encapsulating the quantum dots with β-AspFF effectively increased stability and antioxidisation ability which are beneficial for optical identification.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Yongzhen Wang,Xiang Yu,Weiqiang Fan,Rulin Liu,Yuyan Liu
Oil spills threaten ecosystem and health seriously. Porous foams have been proved as ideal candidates for oil absorbents, however, many with poor oil retention (re-bleeding). Here, we creatively developed a composite foam oil absorbent capable of oil absorption and oil gelation , based on porous alginate foam and hydroxyl aluminum stearate oil gelator . The microstructure of alginate foam can be adjusted by the addition of t-butanol in the solvent, and long alkyl chains of gelator endow foam skeleton with good hydrophobicity , avoiding secondary pollution from traditional hydrophobic chemical modification. Interconnected skeleton decorated by oleophilic gelators contributes to high oil absorption. Oleophilic gelator can self-assemble into 3D network to entrap oils to form gels, giving rise to effective oil retention, realizing the integration of high oil absorption and oil retention. The natural abundant, low-cost composite foam would be promising for tackling oil spills.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 16
·7210-7216
·
IF 3.591
Dan Liu,Shanshan Dai,Li Wang,Ya Liu,Hongsheng Lu
Organogelators have received extensive attention in the recovery of leaked organic solvents or oil spills. However, due to the interactions of organogelators with the organic solvents/oil, the separation and recovery of organic solvents/oil and organogelators from organogels is difficult. In this study, we have developed an organogelator with pH-triggered recyclable property, realizing the recovery of oil and organogelator. The organogelator (HSA-N) is synthesized with 12-hydroxystearic acid (HSA) and 3-dimethylaminopropylamine by an amidation reaction. Here, HSA-N can gelate several organic solvents and fuel oils at a low concentration (less than 1 wt%), which is induced by the strong hydrogen bond interaction and van der Waals forces demonstrated by X-ray diffraction (XRD) and infrared spectroscopy (IR). As HSA-N can reversibly transform between hydrophilicity and hydrophobicity by regulating pH, the separation and recovery of organic solvents/oil and organogelator can be achieved at room temperature. Herein, organogelators with pH responsiveness make it promising to recover organic solvents/oil and organogelators from organogels at room temperature.
研究领域:
化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Colloid and Interface Science Communications
·
2021
·
IF 4.914
Xin-Yu Jiang,Jia-Nan Yan,Yi-Nan Du,Shi-Qi Xu,Hai-Tao Wu
In this communication, the rheological behaviors of hydrolysates from scallop ( Patinopecten yessoensis ) male gonad (SMGHs) combined with eight polysaccharides , including ι -carrageenan, sodium alginate , guar gum , locust-bean gum, pectin, acacia gum, xanthan gum and agar, respectively, were reported. The mixture of SMGHs (5%) and each polysaccharide (0.03–1.25%) was characterized by visual observation and rheological characterization in the concentration ranges where each polysaccharide has visible viscosity and keeps flowing. The addition of ι -carrageenan (0.56%) increased the storage modulus of SMGHs at 0.1 Hz by almost 77-fold, reaching 344.9 Pa. While, when the shear rate was 0.13 s −1 , the mixed-gel viscosity of SMGHs/guar gum and SMGHs/locust-bean gum reached to 137.6 and 129.0 Pa·s, respectively. Moreover, SMGHs have potential application as a gelling agent in the food processing by complexing with a certain polysaccharide.
研究领域:
食品科学
·
海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qin Yu,Yan Gao,Haiwen Mao,Chao Yin,Zhiteng Li,Haoguan Gui,Tao Zhang
High internal phase emulsion (HIPE)-templated aerogels and xerogels are promising for removing oils from oil-water-mixtures, but such emulsions usually exhibit quite low adjustability in the dispersed phase fraction and the stabilizer concentration. Herein, we report the fabrication of emulsion-templated aerogels from highly adjustable gel emulsions, both of water-in-oil and nonaqueous emulsions, with the dispersed phase fraction ranging from 5 % to 80 % and stabilizer concentration ranging from 0.3 % to 8 %, much higher adjustability than that of common HIPEs. Through simple direct drying, the gel emulsions turn into emulsion-templated aerogels with designable external shapes, low density, unique hierarchically porous structures (emulsion-templated voids, interconnecting pores depending on emulsion types, nanofibers on void walls) that are not common for emulsion-templated porous polymers, an moreover, the aerogels show enhanced hydrophobicity and oleophilicity. The hydrophobicity-oleophilicity and unique porous structures enable the aerogels suitable for removing oils oil-in-water emulsions that are usually impossible for common porous materials.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Chemistry Frontiers
·
2018
·Vol. 2
·期 10
·1784-1790
·
IF 0
Peng Lv,Sudong Yang,Peng-Cheng Ma
Developing novel materials for oil–water separation is highly desirable to solve the problems caused by oil spills. Herein, a wheat-bran-based hybrid material was prepared using a hydrothermal process, and the feasibility of utilizing the hybrid as an oil gelling agent (OGA) was studied. The results showed that the obtained material exhibited a mild hydrophobicity with a water contact angle above 130°, and an oleophilicity with high adsorption capacity for various oils and organic solvents. Furthermore, the material continuously adsorbed and gelled the oil floating on the water surface, forming an oil–OGA aggregate when in contact with an oil–water mixture. The aggregation-induced gelation observed in the material makes it possible to conveniently remove oil spills from the surface of water. The low cost and environmentally benign process distinguishes the developed material as a candidate that is suitable for the clean-up of oil spills.
研究领域:
材料科学
·
环境科学
·
生物技术
✓ 已验证
产品关联
DOI
LANGMUIR
·
2025
·
IF 3.9
Li Wang,Yi Zeng,Ruiqi yin,Yi Zheng,Zhen Li,Lihua Zhou,Guilong Yan,Zhenyu Li,Jingyu Chen,Jingjuan Lai,Dong Li,Dong Xiang,Chunxia Zhao,Hui Li,Bo Yu,Xuezhong Zhang,Han Li,Xungai Wang,Yuanpeng Wu
Oil spill pollution poses a severe environmental threat, necessitating the development of efficient and sustainable remediation strategies. In this study, we designed and synthesized a series of pH-responsive phase-selective organogelators (pRPSOGs) based on d-gluconic acetal derivatives with long-chain amine groups to selectively solidify oil in oil/water mixtures, facilitating its rapid removal and recovery. The gelation behavior, phase-selective capability, and pH-switchable properties of the synthesized pRPSOGs were systematically investigated by using inversion tests, rheological analysis, Fourier transform infrared spectroscopy, X-ray diffraction, and small-angle X-ray scattering. Molecular simulations were further conducted to elucidate the self-assembly mechanism of the gelators. The optimized gelator, A12, exhibited excellent thermal stability and mechanical strength, ensuring structural integrity during oil spill recovery. Importantly, the pH-responsive property of A12 allowed for reversible solubility modulation, enabling efficient separation and recovery of both the gelator and oil phase without the need for energy-intensive distillation. This innovative strategy provided a reusable, energy-efficient, and environmentally friendly approach for oil spill treatment, offering promising applications for large-scale environmental remediation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Molecular and Engineering Materials
·
2013
·
IF 0
MIAO LUO,XIE ZHOU,ZHENGUO CHI,CHUNPING MA,YI ZHANG,SIWEI LIU,JIARUI XU
Two novel organogelators ( TEG and TAG ) based on tetraphenylethylene and 3,4,5-tris(dodecyloxy) benzoic acid were synthesized through ester bond and amido bond linkages, respectively. Compounds TEG and TAG were able to induce gelation in ethanol. Aggregation-induced enhanced emission was observed in these organogelator molecules, with increased fluorescence intensity from the solutions to the gels. The completely thermoreversible gelation occurred due to the aggregation of the organogelators. In the process, a fibrous network was formed by a combination of intermolecular hydrogen bonding, π–π stacking and van der Waals interactions. These phenomena were observed in the xerogels by field-emission scanning electron microscopy and Fourier-transform infrared spectroscopy. The results of differential scanning calorimetry and polarized optical microscopy indicated that compound TAG exhibited stable liquid crystalline phases over a wide temperature range. The linking groups have severe influence on the properties of the organogelators, which was mainly attributed to the hydrogen bonding interaction in compound TAG .
研究领域:
材料化学
·
有机化学
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）