VACUUM
·
2024
·
IF 3.8
Jinshi Li,Yifan Zhang,Di Zhang,Chun Liu,Jianhong Kang,Ning Li,Shunlin Pan,Fubao Zhou
Xanthan gum (XG) solution has been proven to be an effective working fluid in the liquid ring vacuum (LRV) pump to achieve significant energy savings. As an important influencing factor of the LRV pump performance, the effect of temperature on the drag reduction performance, rheological properties, and microstructure of XG solution in the LRV pump were experimentally investigated in this paper. The results indicate that with the increase of temperature, the drag reduction rate of the XG solution in the LRV pump initially rise and subsequently decline, and XG solutions with different concentrations show different optimal drag reduction temperatures. The microscopic parallel double-chain structure of XG has the same change pattern as the drag reduction performance, while the steady-state and dynamic shear characteristics of the XG solution manifest a downtrend. For instance, as the temperature of 4000 ppm XG solution increases from 10°C to 60°C, the drag reduction rate decreases by 20%; the parallel double-chain structure decreases from 91.3% to 89.9%; the yield stress and relaxation time decrease from 4.63993 Pa and 4477.56 s to 3.37808 Pa and 143.27 s, respectively; the drag reduction rate reaches the maximum value when the temperature is 40 °C.
✓ 已验证
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8.8
Zhaohui Huang,Caiyue Ren,Wenhui Liu,Ziyuan Zhang,Mengning Zhao,Qian Liu,Baohua Kong,Fangda Sun
This study investigated the noncovalent interactions between rice protein and xanthan gum (RP-XG) and their effects on the stability of high internal phase emulsions (HIPEs). The infrared spectrum and fluorescence spectroscopy revealed that RP-XG was formed by hydrogen bonding, hydrophobic, and electrostatic interactions. The zeta potential absolute value and solubility of RP-XG increased significantly with rising XG concentration. At an XG concentration of 0.4%, the RP-XG complex exhibited optimal emulsifying performance, with EAI of 23.21 m 2 /g and ESI of 102.29%, the three-phase contact angle approached 90°, with biphasic wettability. Therefore, RP-0.4%XG was selected as the emulsifier for HIPE stabilization in subsequent experiments. The droplet size and rheological behavior of the HIPEs were closely related to emulsifier concentration and oil phase volume fraction. Specifically, the emulsion stabilized with 35 mg/mL RP-XG displayed the smallest droplet size and a dense network structure. Rheological analysis demonstrated that the HIPEs behaved as shear-thinning viscoelastic solids, showing the highest viscoelasticity at an emulsifier concentration of 35 mg/mL and an oil volume fraction of 77%. These findings provided a new strategy for the application of protein-polysaccharide complexes in food-grade HIPEs.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Yaqi Zhang,Shiyao Liu,Hongman Xu,Jiahui Wu,Ruquan Zhang,Yongzhen Tao
Polyanionic polysaccharide-based hydrogels were developed as multistimuli-responsive drug carriers. Methacrylated pullulan (MP) acted as a thinner and rigidity regulator. Carboxymethylated-methacrylated xanthan gum (CMMXG) provided negative charges, ionic conductivity, and viscoelasticity. The cumulative ciprofloxacin hydrochloride (CPFXH) release mass dropped dramatically, whether the hydrogel was set at the anode or cathode with a potential of 3 V, due to irreversible electrochemical oxidation. Hydrogels with lower drug-loading amounts exhibited higher release efficiency when an electric stimulus was applied in the initial 5 h. A high CPFXH-loading amount led to rapid diffusion and quick electrochemical oxidation. For CMMXG3-MP7.5-CPFXH1680-LAP, the CPFXH release efficiency ratio of 3 to 0 V decreased from 1.33 ± 0.43 to 1.01 ± 0.06 over a duration of 0.5 ∼ 2 h, further indicating that the encouraged release and electrochemical degradation occurred simultaneously. The CPFXH release efficiency in phosphate buffer saline (pH = 7.4) was 1.5 times higher than that in simulated gastric fluid (pH = 1.2), and the CPFXH diffusion coefficient with loading weight was 6 times higher than that without loading, indicating that it was sensitive to pH and compressive force. The hydrogels exhibited electric, pH, and mechanical stimuli-responsiveness due to the presence of charged groups along the chains and viscoelasticity with robustness enough to respond and withstand compressive loading.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 47
·28376-28382
·
IF 3.119
Chaoxi Zeng,Haiyang Zhao,Zheng Wan,Qian Xiao,Huiping Xia,Shiyin Guo
As a possible alternative to hydrogels, eutectogels are formed by gelling natural deep eutectic solvents (NADESs) that may be closer to the intracellular environment than pure water. This study successfully prepared highly biodegradable and thermostable eutectogels based on polysaccharides and NADESs, and studied the possible mechanism of eutectogel formation. The results show that these eutectogels displayed excellent thermostability as both the G′ and G′′ values remained constant in the temperature range of 60–110 °C, and the weight of the eutectogels remained almost unchanged when held at 80 °C for 10 hours. Similar to the formation of xanthan gum-based hydrogels, water addition and annealing treatment are necessary for the preparation of xanthan gum-based eutectogels. XRD, DSC and FT-IR results show that the existence of xanthan gum affects the original hydrogen bonding network of the NADESs, which further indicate that the hydrogen bond interaction between xanthan gum and NADESs is an important cause of eutectogel formation and changes in gel properties. Rheological results show that the eutectogel is a weak gel with excellent thermostability and structure recovery. As it is more stable than hydrogels and greener than ion gels, the polysaccharide-based eutectogel is expected to be widely used in the fields of food, medicine and materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Ruquan Zhang,Yongzhen Tao,Qianru Xu,Nian Liu,Pu Chen,Yingshan Zhou,Zikui Bai
The hydrogels with injectable and self-healing properties were prepared from xanthan gum (XG) and silk fibroin (SF) by using sodium trimetaphosphate (STMP) as crosslinker. A three-stage model of oscillation-shear-oscillation experiment was designed to mimic injection process and to observe destruction and regeneration of the hydrogels after shear. The XG3-SF-STMP hydrogels immediately recovered to original storage modulus of 80.6%–93.8% on removing shear. The hydrogels were 3D printed into the self-supporting constructions of hydrogel fibers with connected porous structures, and the XG3-SF-STMP hydrogel fibers exhibited smaller width than XG3-STMP. Oscillation rheological behavior indicated that XG3-SF-STMP hydrogels formed rapidly and exhibited more solid-like gel behavior than XG3-STMP. The hydrogel structures were destroyed under a strain (100%) larger than critical strain, but were rebuilt under a small strain (1%) with recovery ratio of 91.36–93.96% within 120 s, suggesting a self-healing property. Introduction of SF particles into XG3-STMP crosslinked networks improved stiffness and retained recoverability. Carboxyl and phosphate groups in the hydrogel networks are beneficial for XG3-SF-STMP hydrogels to absorb enough liquid electrolytes, leading to effective ionic conductivity . The ion-conductive hydrogel with injectable, self-healing, controlled release and non-cytotoxic properties possesses a promising prospect for tissue engineering and drug release application.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Meixia Zheng,Yujing Zhu,Yuanhong Zhuang,Kok Bing Tan,Jianfu Chen
Grape seed extract (GSE) was added to pullulan polysaccharide (PP)/xanthan gum (XG) as composite film (PP/XG/GSE or PXG). The observed composite morphology indicated their biocompatibility. Sample PXG100 (contain 100 mg/L GSE) demonstrated the best mechanical properties, with tensile strength of 16.62 ± 1.27 MPa, and the elongation at break of (22.60 ± 0.48)%. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging activity of PXG150 were the highest at (81.52 ± 1.57)% and (90.85 ± 1.54)%, respectively. PXG films also demonstrated inhibitory effects on Staphylococcus aureus , Escherichia coli , and Bacillus subtilis . The PXG films could also prolong the shelf life of fresh-cut apples because it could decrease the rate of weight loss and retain more vitamin C and total polyphenol even on the 5 th day. The weight loss rate of PXG150 was decreased from (8.58 ± 0.6)% (control) to (4.15 ± 0.19)%. It was able to achieve vitamin C and total polyphenol retention rate of 91 % and 72 %, respectively, which was significantly higher that the control sample. Therefore, GSE had contributed in enhancing the antibacterial, antioxidant properties, mechanical strength, UV protection and water resistance in PXG composite films. This effectively extend the shelf life of fresh-cut apples, which it will be an excellent food packaging material.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2016
·
IF 5.267
Guilu Pi,Yiming Li,Mutai Bao,Lili Mao,Haiyue Gong,Zhining Wang
The potential toxicity of existing chemical dispersants on the marine environment has motivated the search for environmentally friendly dispersants with excellent dispersion ability. Here, an effective Pickering emulsifier is developed based on the synergy of natural biopolymer, Xanthan Gum (XG), and silica nanoparticles. The oil–in–seawater emulsion stabilized by a combination of XG and silica demonstrates great stability and smaller droplet size, which is favorable for the following natural degradation of oil. The synergistic emulsification mechanism has been investigated systematically. The presence of XG favors the adsorption of silica nanoparticles at the oil–seawater interface and also is considerably effective in enhancing the viscosity of continuous phase. These contributions of XG slow down the droplet coalescence and creaming significantly. Confocal laser scanning microscope (CLSM) and scanning electron microscope (SEM) images of emulsions indicate a thick layer of aggregated XG/silica particles at the oil–water interface. This thick layer provides an effective steric barrier. In this study, the synergy between XG and silica not only enhances the dispersion effectiveness, but also reduces the amount of nanoparticles dramatically. This finding opens up a new path for the development of a novel, high efficiency, ecologically acceptable, and cheaper dispersant for emulsifying crude oil following a spill.
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Mingwei Feng,Juan Wang,Shu Liu,Dariusz Wanatowski,Yong Ren
Xanthan gum, as an environment-friendly biopolymer, holds great promise to replace conventional binders for engineering construction. Yet, the impact of curing temperature and relative humidity (RH) on the strength of xanthan gum-treated sand remains uncertain. In this study, xanthan gum-treated sand specimens were cured under different temperatures (20°C-70°C) and RH (10 %-80 %), respectively, until an equilibrium moisture content was reached. Through a series of Unconfined Compressive Strength (UCS) tests, an optimal curing humidity of 40 % was identified for all the testing temperatures. It was also found the UCS at 10 % RH is always slightly higher than that at 70 % RH, and the UCS increases linearly with the curing temperature under the same RH. The mechanisms of the findings were further studied by X-ray Computed Tomography (CT) scan tests and Scanning Electron Microscopy (SEM) tests. The strengthening of xanthan gum-treated sand was attributed to an internal hydrogel effect and an external hydrogel-particle network effect. In particular, the hydrogel breakage at low RH and the small hydrogel volume at high RH contribute negatively to the network effect and thus relatively small UCS at low/high RH. Meanwhile, elevating the curing temperature could trigger the conformation transformation of xanthan gum hydrogels and thicken the shells of hydrogels, both of which contribute positively to the hydrogel and network effects and thus provide a higher UCS.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
·
2024
·
IF 3.6
Hongxiang Ou,Haizhen Cao,Shangbin Wang,Zheng Min,Honglai Xue,Haipu Bi,Junqi Wang
To improve the foam stability and fire extinguishing efficiency of fluorine-free foam (FFF) extinguishing agents, xanthan gum (XG) and carbon nanotubes (CNTs) were selected as the foam stabilizer agents in this study to investigate their effects on the physical and chemical properties and fire suppression effectiveness of FFF system . The effects of the four factors, namely, α-olefin sulfonic acid Salts (AOS), YT-Y762, XG, and CNTs, on the foam performance were investigated using L 9 (3 4 ) orthogonal design method. Three FFF solutions were selected based on the following four parameters: surface tension, 25% drainage time, foam height, and viscosity . The physicochemical properties , fire extinguishing, and burnback performance of the three FFF solutions were investigated. The results indicated that XG and CNTs have synergistic effects on the FFF solution, and the addition of 0.2 wt% of XG and 0.4 wt% of CNTs increased the 25 % drainage time by 81.40 %. The fire extinguishing performance was effectively improved. The results show the potential application of carbon nanotubes in FFF extinguishing agents.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD SCIENCE
·
2021
·Vol. 87
·期 1
·302-311
·
IF 3.167
Yi-Nan Du,Shan Xue,Jia-Nan Yan,Xin-Yu Jiang,Hai-Tao Wu
The objective of this study was to investigate the properties of ternary composite gel of scallop ( Patinopecten yessoensis ) protein hydrolysates (SMGHs)/κ-carrageenan (KC)/xanthan gum (XG). The rheological properties, moisture-distribution, molecular structure, and microstructure of SMGNs/KC/XG gels were analyzed. The results showed that the G ′ value, melting temperature, and water holding capacity of SMGHs/KC/XG were higher than those of SMGHs, SMGHs/KC, and SMGHs/XG. FTIR spectrum showed the generation of hydrogen bonds between SMGHs and KC/XG, and the carboxylic acid group of XG interacts with SMGHs. Moreover, the cryo-SEM results showed that SMGHs/KC/XG exhibited a tighter, smoother, and more aggregated microstructure than those of SMGHs, SMGHs/KC, and SMGHs/XG. These results indicate that the gel and microstructural properties of SMGHs are significantly improved by addition of KC and XG, and SMGHs/KC/XG has potential to be used as functional hydrogels for food, pharmaceutical, and biomedical applications. Practical Application Scallop ( Patinopecten yessoensis ) male gonads are rich in protein and usually regarded as byproducts during adductor processing. Because of its gelation properties, scallop male gonads have potential to be used as functional hydrogels for food. The SMGHs/KC/XG ternary composite gel showed excellent gel properties, which would be potentially applied in delivery system in food and biological fields. Further study is undergoing to apply SMGHs/KC/XG to embed bioactive compounds, such as curcumin and β-carotene.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yuhang Tang,Zhipeng Lin,Shunyu Chen,Xiufeng Xiao
Conductive hydrogels hold great promise for wearable sensors due to their flexibility, biocompatibility, and customizability. However, issues such as poor environmental stability, water loss, and insufficient mechanical properties have hindered their broader application. In this study, we introduce a novel polyvinyl alcohol (PVA) hydrogel reinforced with xanthan gum (XG) and a solketal-water binary solvent, creating an interpenetrating network with exceptional performance. XG serves as a toughening agent, enhancing the hydrogel's toughness from 0.09 MJm −3 to 5.82 MJm −3 compared to conventional PVA hydrogels. Solketal significantly improves moisture retention and freeze resistance, allowing the hydrogel to retain less than 20 % water loss over days at moderate humidity and to autonomously absorb moisture under high humidity conditions. Incorporating polydopamine (PDA) and NaCl further improves recyclability and conductivity, achieving a gauge factor of 2.54 and enabling reshaping with retained performance after multiple cycles. This eco-friendly, cost-effective hydrogel functions as a versatile strain and capacitive sensor, accurately detecting human motion and writing patterns, showcasing potential for wearable electronics and environmental monitoring. Our work fundamentally advances the field by balancing mechanical, electrical, and environmental stability properties in a multifunctional hydrogel, overcoming limitations of prior literature.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yao Liu,Dongshu Chen,Panpan Gu,Yue Liu,Bai Wang,Xiaoxu Xu,Jianshe Hu
With the rapid development of wearable electronic devices and smart sensors, flexible sensors have received much attention due to their excellent mechanical properties and good adaptability. However, developing a simple method to produce conductive hydrogels with excellent electrical conductivity , mechanical properties, environmental stability, and durability is still a major challenge. In this study, a novel dual-network composite flexible sensor was developed, which was mainly composed of xanthan gum (XG), sodium alginate (SA), polyacrylamide (PAAm), and gallium‑indium alloy (Ga-In). The sensor combined the good biocompatibility and thickening properties of natural polysaccharides , the flexibility of polymers, and the excellent electrical conductivity of conductive metal alloys. The sensors exhibited good mechanical properties (stress ≈ 400 KPa, strain ≈ 540 %), high fatigue resistance , recoverability and excellent environmental adaptability. In addition, the addition of liquid metal could increase the conductivity (1.83 S m −1 ) of the hydrogel while maintaining high transparency, and the flexible sensor device constructed from it had high sensitivity to strain (GF = 2.75). Therefore, the hydrogel as a flexible sensor showed promising applications in detecting human movement, which could monitor the movement of human joints, micro-expressions, and handwriting. This will provide new ideas for scientific management of sports and health monitoring.
✓ 已验证
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）