JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·
IF 1.5
Yang Man,Li Zhanguo,Wang Yi,Lin Xiaoyan
In this study, a hydrogel-based strippable coating was expeditiously synthesised by employing hydrogen bonding between eco-compatible guar gum (GG), borax, and glycerol (Gly), thereby endowing the coating with excellent swelling capabilities and a high water retention capacity. This approach was specifically designed to navigate the intricate rheological management associated with strippable coating decontaminants. Through the incorporation of Prussian blue (PB), a material highly effective in adsorbing cesium (Cs), the solubility and diffusion of radionuclides within the hydrogel were significantly enhanced, thereby augmenting the decontamination efficacy of the hydrogel. The PB–GG–Gly composite demonstrated remarkable decontamination efficiencies, removing Cs from surfaces of glass, stainless steel, rubber, lacquer, and cement with percentages of 99.66%, 99.37%, 99.71%, 99.67%, and 83.83%, respectively.
研究领域:
材料科学
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环境科学
·
放射性污染治理
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Yuxin Xie,Xiaoyu Xu,Shaoze Shi,Ninglin Zhou
Freshwater scarcity poses a significant challenge to global sustainable development, while existing atmospheric water harvesting (AWH) materials are often limited by complex fabrication, high cost, salt leakage, and slow sorption–desorption kinetics. We developed a multifunctional GG-CNF/E-LiCl/CB biopolymer aerogel, where guar gum (GG) and nanocellulose (CNF) were used as polymer matrices and cross-linked with methyltrimethoxysilane (MTMS) to form a three-dimensional network. This structure facilitated the uniform dispersion of ethanolamine-modified lithium chloride (E-LiCl), enabling efficient moisture capture and transport. Alkynediol (TMDD) prevented carbon black (CB) agglomeration via physical adsorption, thereby enhancing the photothermal conversion efficiency. The aerogel exhibited remarkable moisture sorption across a broad humidity range (30%–90% RH), with a water uptake of 2.05 g g–1 at 70% RH. Under simulated solar irradiation (0.5–1.5 sun), >73% of the adsorbed water was released within 100 min. Its dehumidification performance outperformed conventional desiccants (4A molecular sieve and silica gel), reducing humidity from 90% to 19.4% within 100 min. The biopolymer aerogel combines simple fabrication with environmental sustainability, highlighting its promise for sustainable water vapor utilization.
研究领域:
材料科学
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环境工程
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可持续能源
·
高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2018
·
IF 4.513
Zichen Yin,Yanling Wang,Kun Wang,Chuanbao Zhang
Hydroxypropyl guar gum (HPG) is an important guar gum derivative commonly used as thickener for fracturing fluids in the field of petroleum industry . This paper presents an investigation of the adsorption properties of HPG on quartz sand using a modified measurement method. The effects of pH, temperature, inorganic salt, alcohols and polymers on the adsorption density of HPG were also studied. The results showed that the effect of pH and temperature from 20 °C to 60 °C on the adsorption capacity could be negligible. Sodium chloride (NaCl) has little effect on HPG adsorption; however, potassium chloride (KCl), calcium chloride (CaCl 2 ) and magnesium chloride (MgCl 2 ) increased the adsorption capacity while sodium sulfate (Na 2 SO 4 ) and trisodium phosphate (Na 3 PO 4 ) resulted in the decrease of the adsorption density. In addition, monobasic alcohol has no significant effect on HPG adsorption while the addition of polybasic alcohol increased the adsorption. The addition of partially hydrolyzed polyacrylamide (HPAM) decreased the adsorption capacity. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) test demonstrated that HPG was only adsorbed on the surface of quartz sand and not absorbed into the quartz. The Fourier infrared spectroscopy showed that the HPG adsorption mechanism on quartz sand was caused by a hydrogen bond and Van der Waals' forces.
研究领域:
石油工业
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Dandan Li,Na Yang,Yao Zhang,Lunan Guo,Shangyuan Sang,Zhengyu Jin,Xueming Xu
The aim of this study was to evaluate the effects of alcohol-acid degradation on the structural and physicochemical characteristics of guar gum. Guar gum (50 wt.%) was treated with methanol, ethanol, 2-propanol, or 1-butanol containing 1 or 2 mL 36% hydrochloric acid at 75 °C for 30–240 min. The linear relationship between 1/Mw and time suggested that alcohol-acid degradation followed first-order kinetics with rate constants varying directly with the number of alcohol carbon atoms and acid concentration. Alcohol-acid treatment exerted no effect on the chemical and crystal structure of guar but significantly decreased shear viscosity, slightly increased solubility, mildly reduced thermostability, and dramatically darkened colour. This study extended the knowledge of the effect of alcohol on the acid hydrolysis of guar and will contribute to the development of a large-scale procedure for guar gum degradation.
研究领域:
化学工程
·
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Yanjun Tang,Xinqi Zhang,Ruonan Zhao,Daliang Guo,Junhua Zhang
Nanocrystalline cellulose (NCC) has shown great potential for reinforcing nanocomposite systems, particularly in biopolymer-based nanocomposites. In the present work, transparent and biodegradable chitosan (CH)/guar gum (GG)/NCC nanocomposite films were designed and prepared. The effect of NCC loadings on the rheological behavior of the as-prepared nanocomposite suspensions was investigated, the overall properties of the resultant nanocomposite films as a function of various amounts of NCC were determined, and the surface morphology of various nanocomposite films was characterized by scanning electron microscopy (SEM). Results indicated that the increased NCC loadings increased the shear viscosity of the nanocomposite suspensions. Moreover, as expected, the obtained CH/GG/NCC nanocomposite films were found to exhibit improved tensile strength and reduced air permeability in comparison to pure CH/GG films. This work supported the conclusion that NCC was effective in reinforcing the CH/GG composite films, which may be a promising material for food packaging applications.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Yang Li,Shibin Wang,Jianchun Guo,Ruiyang Chen,Feng Zhao,Yuxuan Liu
Hydroxypropyl guar gum (HPG) is commonly used as the thicker of the fracturing fluid. It will be adsorbed on the sandstone that leads to decrease the permeability of the reservoir. Therefore, it is necessary to reduce the adsorption of HPG to decrease the permeability damage. The effect of silica nanoparticles (SNP) on the adsorption properties of HPG has been studied. X-ray photoelectron spectroscopy is employed to confirm the interaction force between HPG and sandstone. It is clear that hydrogen bonds is an important force of adsorption between HPG and sandstone. SNP can break hydrogen bonds between HPG and sandstone by occupying the rock surface, while altering the wettability of the rock. This results in effectively reducing the amount of HPG adsorption and retaining larger pores of the core after flooding with fracturing fluids. Adding SNP to HPG is an effective method to reduce reservoir damage.
研究领域:
石油工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Results in Engineering
·
2025
·
IF 7.9
Junqi Jiang,xinyang yu,Feng Wu,Yanbo Zhong,Guichun He,Zhilin Liu
As a strategically significant non-metallic mineral resource, fluorite faces considerable challenges in its flotation separation from associated calcite due to their highly similar surface properties and nearly identical responses to conventional reagents. Traditional depressants not only demonstrate inadequate selectivity in distinguishing these calcium-containing minerals but also raise environmental concerns. This study introduces guar gum (GG), a natural polysaccharide derived from renewable plant sources, as a highly selective depressant for calcite in fluorite flotation using sodium oleate (NaOL) as the collector. Systematic flotation tests revealed that GG strongly depresses calcite flotation while minimally affecting fluorite floatability. At an optimized concentration of 25 mg/L GG, calcite recovery drastically decreased to only 2.5%, while fluorite recovery remained at approximately 85%, demonstrating exceptional selectivity. Artificial mixed-ore flotation tests under carefully optimized conditions successfully upgraded the CaF 2 grade from 49.72% to 79.48% with a fluorite recovery of 92.25%, confirming practical separation efficiency. Surface analysis through multiple characterization techniques verified that GG selectively adsorbs on calcite surfaces, rendering them hydrophilic and effectively blocking subsequent NaOL adsorption. Fourier transform infrared spectroscopy and density functional theory simulations provided crucial molecular-level insights, consistently revealing GG's significantly stronger adsorption affinity and more favorable interaction energy with calcite compared to fluorite. These fundamental findings offer a comprehensive molecular-level explanation for the observed differential flotation behavior. This research validates GG as an efficient, highly selective, and environmentally friendly depressant that enables effective separation of fluorite from calcite, providing a sustainable alternative to conventional reagents in mineral processing operations.
研究领域:
矿物加工
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浮选化学
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表面科学
·
可持续采矿
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2025
·
IF 5.1
Longfa Lan,Jiayan Zhou,Hongqing Cheng,Jing Liu,Dongying Hu
The development of eco-friendly wood adhesives from biomass polymers is challenging due to their poor water resistance and low wet bonding strength. To overcome these limitations, a modified guar gum (MGG) adhesive was developed via a combined approach of acrylate grafting, epoxy ring-opening, and silane coupling. This chemical modification established a stable cross-linked network, significantly enhancing cohesive and interfacial adhesion. The viscosity of MGG was reduced to about 900 mPa·s, greatly improving coatability compared to raw GG (6000 mPa·s at 1 % concentration). The optimized adhesive showed a dry bonding strength of 1.67 MPa and a wet bonding strength of 0.84 MPa, outperforming many previously reported biomass-based adhesives. Improved thermal stability and moisture resistance were also confirmed, attributed to introduced aldehyde and ether groups that promote dense crosslinking. This work not only demonstrates a viable pathway to overcome the intrinsic weaknesses of GG, but also highlights MGG as a sustainable and high-performance alternative to conventional formaldehyde-based wood adhesives, providing both practical applicability and scientific significance.
研究领域:
材料科学
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胶粘剂与粘接技术
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高分子化学
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可持续材料
·
木材科学与技术
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2021
·Vol. 11
·期 1
·1-14
·
IF 4.38
Bhubhanil Sakkarin,Talodthaisong Chanon,Khongkow Mattaka,Namdee Katawut,Wongchitrat Prapimpun,Yingmema Werayut,Hutchison James A.,Lapmanee Sarawut,Kulchat Sirinan
Biocompatible materials that act as scaffolds for regenerative medicine are of enormous interest. Hydrogel-nanoparticle composites have great potential in this regard, however evaluations of their wound healing and safety in vivo in animal studies are scarce. Here we demonstrate that a guar gum/curcumin-stabilized silver nanoparticle hydrogel composite is an injectable material with exceptional wound healing and antibacterial properties. We show that the curcumin-bound silver nanoparticles themselves exhibit low cytotoxicity and enhance proliferation, migration, and collagen production in in vitro studies of human dermal fibroblasts. We then show that the hydrogel-nanoparticle composite promotes wound healing in in vivo studies on rats, accelerating wound closure by > 40% and reducing bacterial counts by 60% compared to commercial antibacterial gels. Histopathology indicates that the hydrogel composite enhances transition from the inflammation to proliferation stage of healing, promoting the formation of fibroblasts and new blood vessels, while target gene expression studies confirm that the accelerated tissue remodeling occurs along the normal pathways. As such these hydrogel composites show great promise as wound dressing materials with high antibacterial capacity.
研究领域:
再生医学
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材料科学
·
纳米技术
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
Biomaterials Science
·
2022
·Vol. 10
·期 6
·1476-1485
·
IF 7.59
Ran Xu,Junjie Zhou,Hongyu Gong,Li Qiao,Yuguo Li,Dongwei Li,Meng Gao,Guanchen Xu,Meng Wang,Xiu Liang,Xingshuang Zhang,Mingfu Luo,Hongbo Qiu,Kang Liang,Yong Li
With the vigorous development of electronics and the increasingly prominent problem of environmental pollution, it is particularly important to exploit environmentally friendly electronic devices. Transient electronics represent a kind of device that once the specified functions have completed can completely or partially disappear through physical or chemical actions. In this work, we introduce a novel guar gum-cellulose aerogel (GCA) membrane based on natural biomaterials and successfully use it as an electrolyte film to fabricate a degradable zinc-ion battery (DZIB). All components of the prepared DZIBs can be successfully degraded or disintegrate in phosphate-buffered saline (PBS) containing a solution of proteinase K after approximately 40 days. This electrolyte film has a high ionic conductivity of approximately 4.73 × 10−2 S cm−1 and a good mechanical stress property. When applied to DZIB, the production of zinc dendrites can be restrained, leading to the battery showing excellent electrochemical performance. The battery exhibits a specific capacity of 309.1 mA h g−1 at a current density of 308 mA g−1 after 100 cycles and a steady cycling ability (100% capacity retention after 200 cycles). More importantly, the electrochemical performance of DZIB is better than that of transient batteries reported in the past, taking a solid step in the field of transient electronics in the initial stage.
研究领域:
材料科学
·
电化学
·
环境科学
·
可持续技术
✓ 已验证
DOI
PubMed
高影响因子
TRANSACTIONS OF TIANJIN UNIVERSITY
·
2026
·
IF 7.8
Yin Chengcheng,Zhao Songfang,Duan Guangbin,Zhao Degang,Wang Jieqiang,Yang Shuhua
Conductive hydrogels are vital components in modern electronics and show great promise for wearable sensors. However, their practical use is often limited by the difficulty of balancing mechanical properties and ionic/electronic conductivity. Herein, a dimethyl sulfoxide (DMSO)–regulated polyvinyl alcohol/guar gum (PVA/GG) dual-network conductive hydrogel (D-PVA/GG) was developed. The pre-shielding of intramolecular hydrogen bonds by DMSO induces extended polymer chain conformations, promoting the formation of a robust network and increasing the availability of hydrated hydroxyl groups. This mechanism significantly enhances both the mechanical performance and ionic conductivity of D-PVA/GG. Consequently, D-PVA/GG achieves a tensile strength of 3.82 MPa and a fracture strain of 815%. This strain is five times that of pure PVA hydrogels. D-PVA/GG also attained a conductivity of 1.66 S/m. These results demonstrate the synergistic optimization of the mechanical strength and conductivity. As a wearable sensor, D-PVA/GG can effectively monitor human motions in real time.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Weiwei Zhang,Qin He,Ziming Jin,Yuqin Jiang,Zhiguo Hu,Qingcong Wei
Hydrogels are promising wound dressings due to their extracellular matrix-like properties and tunable structure-function characteristics. Besides the physical isolation effect, hydrogel dressings are highly expected to possess tissue-adhesive performance and antibacterial capacity, which are beneficial for their clinical translations. Herein, a guar gum (GG)-based nanocomposite hydrogel was fabricated by mixing methacrylated GG (GGMA), acrylic acid, acrylated 3-aminophenylboronic acid, mangiferin (MF)-loaded cetyltrimethyl ammonium chloride (CTAC) micelles (MF@CTAC) and radical initiator. This hydrogel exhibited stable and tunable mechanical property as well as excellent biocompatibility. Borate crosslinking and physical interactions of the hydrogel produced a certain degree of self-healing ability, good tissue adhesive and hemostatic capacity. MF endowed the hydrogel with good antioxidant ability and excellent synergistic antibacterial ability with CATC. In vivo experiments indicated that the hydrogel significantly accelerated wound healing with a narrower wound edge, thicker granulation tissue, maturer epidermis and dermis tissue, higher collagen deposition level, milder inflammatory response, and enhanced angiogenesis. The hydrogel without adding antibiotics and other exogenous active ingredients showed great application potential as a versatile wound dressing material.
研究领域:
生物材料学
·
医学工程
·
再生医学
✓ 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）