CARBOHYDRATE POLYMERS
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2023
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IF 11.2
Yaqi Zhang,Ruquan Zhang,Yongzhen Tao
Herein, we explored strategies for defoaming and controllable adjustment of spinnable and mechanical properties of polyanion polysaccharide-based hydrogels to fabricate conductive, water-retaining, and knittable hydrogel fibers for next-generation flexible electronics. Xanthan gum (XG) and aniline tetramer modified-polysaccharide (TMAT38) were crosslinked with sodium trimetaphosphate (STMP) and subsequently by Fe 3+ /Fe 2+ ions coordination to prepare conductive and spinnable hydrogels. Polypropylene glycol was introduced as chemical antifoam, and solvent displacement method was adopted to improve mechanical and water-retaining properties. The glycerol-immersed XG5-TMAT38-STMP-Fe 3+ /CA-PPG hydrogel exhibited conductivity of 3.55×10 −3 –27.30×10 −3 S/cm, storage modulus at linear viscoelastic region of 573 Pa–1717 Pa and self-healing percentage of 100 %–108 %. The 2 h glycerol-immersed hydrogel fibers with good flexibility, moisture retention and freezing tolerance were ready to bend and knit into fabrics. The hydrogel fiber braid possessed better conductivity, reliability and durability than the single hydrogel fiber as strain sensors. The hydrogel fiber fabric perceived tiny vibration triggered by swallowing, speaking and writing with good sensitivity and reproducibility. Furthermore, a three-component model was developed to evaluate response sensitivity and recoverability of the hydrogel fiber fabric-based pressure sensors, which facilitated understanding transient response of polymer-based hydrogel strain and pressure sensors.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
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2024
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IF 4.4
Qishu Lu,Wenxia Liu,Xiaona Liu,Dehai Yu,Zhaoping Song,Huili Wang,Guodong Li,Shaohua Ge
Conductive hydrogels incorporating liquid metals, particularly gallium (Ga) droplets, have garnered significant attention owing to the multifaceted functionalities they offer. In this study, we introduce a liquid-metal-based conductive hydrogel synthesized through radical polymerization of acrylic acid (AA) in the presence of Ga droplets stabilized by polyaniline (PANI) nanofibers and xanthan gum (XG) at room temperature. The incorporation of PANI not only enhances the stability of Ga-droplet dispersion but also improves the hydrogel’s mechanical properties, including tensile strength, toughness, and sensitivity as a sensor material. With the addition of 0.5 wt % PANI, the hydrogel displays an elongation at break of 964% and a tensile strength of 265 kPa, while exhibiting a sensor gauge factor (GF) of 13.4 within a strain range of 400–600%. The reversible noncovalent cross-links within the hydrogel confer excellent self-healing properties, achieving 98% self-healing efficiency in elongation at break within 6 h and 90% conductivity self-healing within 83 ms. Additionally, the hydrogel’s abundant functional groups enable strong adhesion to various substrates. As a sensing material, the hydrogel demonstrates rapid response and recovery times (250/250 ms), low detection limits (0.1%), and good durability (500 cycles under 10 and 100% strains). The cross-linked network composed of XG, PANI, and PAA imparts the hydrogel with water retention. Moreover, glycerol treatment reinforces the hydrogel’s mechanical strength and sensing abilities, extending their effectiveness even under extreme temperature conditions. As a result, the XG-PANI-Ga-PAA hydrogel-based strain sensor has emerged as a promising tool for monitoring human health and detecting a wide range of human activities with reliability and precision.
研究领域:
材料科学
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生物医学工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Yan Li,Ziqian Liu,Xin Wan,Lingying Xie,Hui Chen,Guo Qu,Han Zhang,Yue-Fei Zhang,Shicheng Zhao
In this work, xanthan gum-based composites were successfully graft-modified by amantadine (XG-Fe 3+ /AM) with higher adsorption capacity and selectivity on recycling cationic dye (methylene blue, MB) from aqueous solution. The adsorption equilibrium of MB could be achieved approximately within 5 min when the initial concentration was 100 mg/L, and the maximum adsorption capacity was up to 565 mg/g. After 5 desorption-regeneration cycles, the removal rate of XG-Fe 3+ /AM for MB could still be as high as 95 % with slight decrement. Additionally, the effects of pH, contact time , temperature and initial dye concentration on the adsorption performance of MB were systematically examined. Furthermore, the adsorbent was characterized by FT-IR, BET and XPS analysis. In mixed anionic and cationic dyes, the adsorption selectivity of XG-Fe 3+ /AM on MB in the mixture of MB and methyl orange (MO) reached up to 99.69 %. Molecular dynamics simulation revealed that the trend of adsorption energy for dyes was in good agreement of the experimental order of adsorption capacities and molecular sizes among seven anionic and cationic dyes based on molecular matching effect and electrostatic interaction. Therefore, XG-Fe 3+ /AM is an eco-friendly, facile-synthesis and high-selectivity adsorbent, which remove cationic dyes in multi-component systems through electrostatic interaction and molecular matching effect.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
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IF 8.2
Wenjie Ma,Jialuo Shan,Mengyao Wang,Jianhua Xie,Yi Chen,Nan Sun,Yiming Song,Xiaobo Hu,Qiang Yu
Chinese Jiuniang (CJ) is a flavorful and nutritious food, but underutilized in frozen dough (FD) production. In addition, frozen storage can harm FD's gluten structure and degrade quality and flavor. Therefore, the impacts of two excellent protective agents (XG-Xanthan Gum; PC-Potassium Carbonate) on frozen Jiuniang dough (F-JD) quality and flavor during dynamic freezing were investigated. The results suggested that adding XG conferred F-JD with good processing stability, maintained the bound water levels, stabilized rheological properties, diminished ice crystal damage to the protein structure, and inhibited the increase in frozen water content during the freezing process. In contrast, although PC reduced free water production during freezing, it increased dough hardness and offered less protein protection than XG . Additionally, GC-QTOF/MS analysis showed that adding XG during freezing increased the relative content of pleasant flavor compounds like Phenylethyl Alcohol and decreased undesirable ones like Hexanal. Moreover, PC lowered the relative content of undesirable flavor substances (Formic acid) but reduced the relative content of beneficial flavor compounds (1-Hexanol). Importantly, the study confirmed that XG maintained the new F-JD product's storage quality during dynamic freezing. In conclusion, this study broadens CJ's application possibilities and provides new insights into mechanisms for preserving F-JD's quality and flavor.
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER SCIENCE
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2024
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IF 3.9
Yajun Wang,Yiyan Gao,Kai Shi,Guanghui Gao
Ionic conductive hydrogels attracted much attention for applying as wearable sensors, but most hydrogel sensors were not strong enough to withstand repeated sensing because of their low mechanical strength. Here, xanthan gum and sodium chloride were introduced into the polyvinyl alcohol hydrogel system for constructing hydrogels with high mechanical strength due to the hydrogen bonds formed between polyvinyl alcohol and gum xanthan as well as the chain entanglement of polyvinyl alcohol. Meanwhile, the hydrogel was highly sensitive to mechanical deformation because of the existence of free ions provided by sodium chloride. As a result, the hydrogel could serve as sensors for perceiving various body motions, with the advantages of fast response, reproducibility and durability for repeated stretching or compression. The strategy of xanthan gum-enhanced hydrogel fuels an exciting new direction for hydrogel-based wearable sensors. Graphical
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
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2020
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IF 1.701
Kai Zheng,Yilin Deng,Hui Cao
To improve the properties of xanthan gum (XG), 3-chloro-2-hydroxypropyltrimethylammonium chloride and propylene oxide were used as modifiers to etherify XG and to obtain cationic hydroxypropyl xanthan gum (HCXG), and cationic hydroxypropyl xanthan gum (CHCXG), further optimized by super-gravity reaction. The structure of the product was characterized by infrared spectroscopy and nuclear magnetic resonance. The rheological properties of XG, HCXG, and CHCXG solutions and their performance as fracturing fluids were studied. Infrared and nuclear magnetic test results showed that the cationic etherification agent and hydroxypropyl group were successfully connected to XG, and the degree of substitution of CHCXG was higher. The rheological properties of the CHCXG solution and the performance of the fracturing fluid base fluid were superior to those of the XG and HCXG solutions. The viscosity of the solution after the super-gravity modification was further increased, and the apparent viscosity of the 0.4% CHCXG solution was 28.96% higher than that of the HCXG solution. After XG modification, the solution strength, yield stress, viscoelasticity, temperature resistance, and shear resistance were all significantly improved. The rheological properties of the HCXG solution and the performance of the fracturing fluid base fluid are good and can be used for fracturing fluid thickener.
研究领域:
生物化学
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材料科学
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石油工程
✓ 已验证
DOI
高影响因子
MINERALS ENGINEERING
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2020
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IF 3.795
Hai Yan,Bingqiao Yang,Mengyuan Zeng,Pengliang Huang,Aiping Teng
Molybdenite and chalcopyrite is generally separated through the selective depression of chalcopyrite using potentially toxic depressants such as sodium sulfide and cyanides. In this work, xanthan gum (XG), a polymer polysaccharide, was investigated as a potential molybdenite depressant in copper-molybdenum sulfides separation. Single mineral flotation tests indicated that molybdenite could be effectively depressed by XG, while chalcopyrite was slightly affected. The artificial mixed minerals flotation tests proved that molybdenite and chalcopyrite could be selectively separated with the addition of XG. The adsorption mechanism was studied through zeta potential and infrared spectroscopy measurements. The results revealed that XG mainly adsorbed on molybdenite surfaces other than chalcopyrite. In a word, the experiments results illustrated that XG could be applied as a promising depressant in the selective flotation separation of molybdenite and chalcopyrite, which has the advantage of environment compatibility over conventional copper depressants.
研究领域:
矿物加工工程
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环境科学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Peiling Han,Jiayin Xie,Xueming Qin,Xinru Yang,Yongsheng Zhao
Micron zero valent iron (mZVI) was an underground remediation material, which had great application potential to replace nano zero valent iron (nZVI) from the perspective of economic and health benefits. However, mZVI was highly prone to gravitational settling, which limited its wide application for in situ remediation of contaminated groundwater. This paper was devoted to develop an efficient and economical groundwater remediation material based on mZVI, which should possess excellent stability, reactivity, and transportability. Thereby xanthan gum (XG) stabilized and Na 2 S 2 O 4 sulfidated mZVI (XG-S-mZVI) was synthesized and characterized with SEM, XRD , XPS , and FTIR techniques. In terms of stability, the adsorbed XG and the dispersed XG worked together to resist the sedimentation of S-mZVI. In terms of reactivity, sulfidation enhanced the electron transfer rate and electron selectivity of XG-S-mZVI, thereby improved the reactivity of XG-S-mZVI. The hexavalent chromium (Cr(VI)) removal rate constant by XG-S-mZVI was determined to be 832.4 times than bare mZVI. In terms of transportability, the transportability of XG-S-mZVI was greatly improved (~80 cm in coarse sand and ~50 cm in medium sand). Straining was the main mechanism of XG-S-mZVI retention in porous media . XG-S-mZVI in situ reactive zone (XG-S-mZVI-IRZ) was only suitable to the media with a grain size larger than 0.25 mm. This study could provide theoretical support and guidance for the implementation of IRZ technology based on mZVI.
研究领域:
环境科学
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化学工程
✓ 已验证
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2019
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IF 3.074
Q. Zhang,X.M. Hu,M.Y. Wu,M.M. Wang,Y.Y. Zhao,T.T. Li
Poly(vinyl alcohol) (PVA)-xanthan gum (XG) hydrogel, which possesses good reusable absorption properties, has been prepared by the freezing–thawing method. Hydrogels prepared with different ratios compositions are characterized using Fourier transform infrared spectroscopy (FTIR) and Scanning electron microscope (SEM), and examined in terms of their swelling behavior, mechanical, rheological and adsorption properties. The results show that a shift in the major signals of FTIR for OH absorption, and with varied intensities in the FTIR spectra andmore and more wrinkles observed in SEM indicated cross-linked interaction by the polymers. All the features of the PVA-XG hydrogel are closely related to its rheological properties. The presence of XG visibly improves the swelling ratio of PVA-XG and reduces the compression properties of PVA-XG due to the formation of hydrogen bonds between the PVA and XG. PVA-XG-4 had the best adsorption of methylene blue (MB) dye, such enhancement in adsorption can be attributed to strong electrostatic attraction between XG and MB. The adsorption conformed to the second-order kinetic model and the adsorption process conformed to the Langmuir isotherm model. In addition, PVA-XG-4 exhibits a promising cycling absorption performance. The 1st and 5th cycle of dye removal for PVA-XG-4 reached to 92 and 80%, respectively. Provides basis for application in water treatment.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
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2022
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IF 7.425
Yiqing Zhu,Xinyang Sun,Xieqi Luo,Jian Ding,Fengjiao Fan,Peng Li,Xinchun Shen,Yong Fang
In this study, nanoparticles (NPs) prepared with xanthan gum and lysozyme were established as a powerful delivery system for two Se-containing peptides: TSeMMM (STP) and SeMDPGQQ (SHP). NPs-STP and NPs-SHP had relatively small particle sizes (145 nm and 148 nm) and negative zeta potentials (−47 mV and −49 mV). The encapsulation efficiency of NPs-STP and NPs-SHP was determined to be 34.35% and 41.35%, respectively. The stability and antioxidant activity of Se-containing peptides were greatly enhanced due to encapsulation. NPs-STP and NPs-SHP exhibited controlled release of Se-containing peptides under in vitro gastrointestinal conditions. NPs-STP and NPs-SHP showed low toxicity and entered Caco-2 cells through clathrin-mediated endocytosis, contributing to a significant increase in the apparent permeability coefficient of STP (2.19 × 10 −6 cm/s) and SHP (2.21 × 10 −6 cm/s). Thus, NPs-STP and NPs-SHP are considered promising delivery systems for Se-containing peptides and have good potential applications in the food and pharmaceutical industries.
研究领域:
食品科学
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药学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
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2025
·
IF 12.5
Shiyao Liu,Fan Han,Pu Chen,Ruquan Zhang,Yongzhen Tao
Injectable and drug-loaded hydrogels based on gelatin and xanthan gum derivatives were biomineralized to form organic-inorganic hybrid composites with osteoconductivity and controllable release of antibiotic drug for inducing bone generation. Gelatin was amidated to get gelatin methacrylate (GM) for supporting cell adhesion and photo-crosslinkability. Xanthan gum was chemically modified to obtain carboxymethalated and sulfated derivatives (CMXG and SXG) with high negative charges for mimicking chondroitin sulfate in bone. GM was co-dissolved with CMXG/SXG and ciprofloxacin hydrochloride (CPFXH), and photo-crosslinked with lithium phenyl-2,4,6-tri methylbenzoylphosphinate (LAP) to fabricate drug-loaded CMXG/SXG-GM-CPFXH-LAP hydrogels, which possessed swelling ratio of 1.30 ± 0.03 and controlled release of CPFXH in PBS for 24 h. The 7d-mineralized CMXG/SXG3-GM12-CPFXH-LAP hydrogel showed dense mineral layers with Ca/P atomic ratio of 1.79, degree of crystalline of 77.3 %, mineral content of 50.8 %, and 2.6 times higher shear modulus than original one. The CMXG/SXG3-GM12-CPFXH-LAP solution was acted as “inks” to “write” word (BONE) and Chinese character (“Gu”) manually, and was transferred into moulds to obtain hydrogel constructs with good fidelity of patterns, suggesting injectability and printability. The injectable, mineralizable, biocompatible and drug-loaded CMXG/SXG-GM-CPFXH-LAP hydrogels possess promising applications in bone tissue engineering due to facilitating osteoconductivity, recruiting cells, and reducing inflammation.
研究领域:
生物材料学
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组织工程学
✓ 已验证
产品关联
DOI
PubMed
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.
研究领域:
材料科学
·
生物医学工程
✓ 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）