PLoS One
·
2021
·Vol. 16
·期 3
·e0247948
·
IF 3.24
Shiliang Xu,Mengke Cui,Renjie Chen,Qiaoqing Qiu,Jiacai Xie,Yuxin Fan,Xiaohu Dai,Bin Dong
With the increasing demand for energy, fracturing technology is widely used in oilfield operations over the last decades. Typically, fracturing fluids contain various additives such as cross linkers, thickeners and proppants, and so forth, which makes it possess the properties of considerably complicated components and difficult processing procedure. There are still some difficult points needing to be explored and resolved in the hydroxypropyl guar gum (HPG) removal process, e.g., high viscosity and removal of macromolecular organic compounds. Our works provided a facile and economical HPG removal technology for fracturing fluids by designing a series of processes including gel-breaking, coagulation and precipitation according to the diffusion double layer theory. After this treatment process, the fracturing fluid can meet the requirements of reinjection, and the whole process was environment friendly without secondary pollution characteristics. In this work, the fracturing fluid were characterized by scanning electron microscopy (SEM), Energy dispersive X-ray (EDX), X-ray diffraction (XRD) and Fourier transformed infrared (FTIR) spectroscopy technologies, etc. Further, the micro-stabilization and destabilization mechanisms of HPG in fracturing fluid were carefully investigated. This study maybe opens up new perspective for HPG removal technologies, exhibiting a low cost and strong applicability in both fundamental research and practical applications.
研究领域:
石油工程
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环境科学
·
材料科学
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DOI
PubMed
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Jiao Yan,Li Wang,Chunxia Zhao,Dong Xiang,Hui Li,Jingjuan Lai,Bin Wang,Zhenyu Li,Hongsheng Lu,Hongwei Zhou,Yuanpeng Wu
Wearable strain sensors of conductive hydrogels have very broad application prospects in electronic skins and human–machine interfaces. However, conductive hydrogels suffer from unstable signal transmission due to environmental humidity and inherent shortcomings of their materials. Herein, we introduce a novel moisture-proof conductive hydrogel with high toughness (2.89 MJ m–3), mechanical strength (1.00 MPa), and high moisture-proof sensing performance by using dopamine-functionalized gold nanoparticles as conductive fillers into carboxymethyl guar gum and acrylamide. Moreover, the hydrogel can realize real-time monitoring of major and subtle human movements with good sensitivity and repeatability. In addition, the hydrogel-assembled strain sensor exhibits stable sensing signals after being left for 1 h, and the relative resistance change rate under different strains (25–300%) shows no obvious noise signal up to 99% relative humidity. Notably, the wearable strain sensing is suitable for wearable sensor devices with high relative humidity.
研究领域:
材料科学
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生物医学工程
·
传感器技术
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Mengya Liu,Jing Guo,Xinbin Ji,Xuecui Song,Zheng Li,Qiang Yang,Rui Zhang,Fucheng Guan
Low-density, high-porosity porous fibers have garnered significant attention for the fabrication of wearable thermal management materials. However, the practical application of sodium alginate (SA) porous fibers is hindered by their inherent hydrophilicity, inadequate flexibility, and poor weavability. In this study, guar gum (GG) and boric acid (BA) were incorporated into SA via a directed freezing wet-spinning strategy, resulting in the formation of a multi-crosslinked network structure. Porous fibers with a porosity of up to 93.6 % were successfully fabricated. Furthermore, a hydrophobic surface layer composed of polymethylsilsesquioxane (PMSQ)-modified silica microspheres was constructed. The resulting material exhibits outstanding hydrophobicity (water contact angle of 139.22°), as well as exceptional flame retardancy, achieving a limiting oxygen index of 47.63 % (UL-94V-0 rating). Importantly, the high porosity contributes to a low thermal conductivity of 0.037 W·m −1 ·K −1 , endowing the fabric with superior thermal insulation performance. The developed H-SA/GG/BA 0.4 fabric demonstrated temperature differentials of 10.2 °C on a high-temperature stage (75 °C) and 9.6 °C on a low-temperature stage (−20 °C), substantially outperforming conventional textiles such as cotton and polyester.
研究领域:
材料科学
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纺织工程
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热管理
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高分子科学
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防火材料
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Jianfeng Hu,Siyang Wang,Jianbing He,Peng Xie,Zhengguo Zhang
To address the global energy crisis and achieve carbon neutrality goals, the development of efficient building thermal management technologies is imperative. Phase change materials (PCMs) have gained significant attention due to their high latent heat capacity. However, their practical application is constrained by limitations in packaging stability and mechanical properties. In this study, we developed a novel composite aerogel by constructing a three-dimensional porous matrix from biomass-derived guar gum (GG) and polyvinyl alcohol (PVA), which was then integrated with polyurea-encapsulated n-eicosane phase change microcapsules (MC) via freeze-drying. The synergistic combination of this tailored GG/PVA scaffold and the MC filler was systematically investigated. The results reveal that an optimized GG:PVA ratio of 1:1 confers exceptional morphological stability (volume shrinkage of 18.75 %) and mechanical strength (compression modulus of 857 kPa for GP@MC-5). The composite's enthalpy efficiency directly correlates with MC content, achieving a high relative enthalpy efficiency exceeding 96.26 %, a latent heat of 160.56 J/g, and a low thermal conductivity of 0.06452 W/(m·K). The material exhibits remarkable reliability, maintaining stable phase change enthalpy and microstructure after 100 thermal cycles, with a thermal decomposition temperature above 150 °C and a leakage rate below 1 %. Owing to its optimized structure and multifunctionality, the composite aerogel demonstrates outstanding thermal management performance. This work highlights its potential for application in energy-efficient buildings. Furthermore, its lightweight and flexible nature suggests promising utility in smart textiles for personal thermal management.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124037
·
IF 7.5
Dian Dai,Qing Li,Fan Zhang,Sirui Lv,Zixuan Yang,Ruicheng Yang,Xiaoqin Yang,Zhangfeng Hu,Liandong Zhu
Despite the substantial potential of microalgae as biomass feedstocks, their commercial development hindered by the lack of economically viable and technically efficient harvesting methods. In the current study, an environmentally friendly bioflocculant cationic guar gum (CGG) was successfully developed. The harvesting efficiency and resultant floc morphology of CGG were evaluated experimentally and compared with those of common flocculants (alum, CPAM, and CS). CGG presented a promising alternative to traditional flocculants, offering distinct advantages in harvesting efficiency, dispersibility, and biocompatibility. Subsequently, a combined flocculation-flotation harvesting method was developed using CGG and the collector cetyltrimethylammonium bromide (CTAB). The incorporation of CGG as a pre-flocculation step significantly enhanced the microalgae recovery rate achieved by CTAB. Independently, CTAB at 20 mg L −1 achieved a recovery rate of only 28.4%. In contrast, adding CGG at concentrations ranging from 10 to 30 mg L −1 increased the recovery rate to 86.9–96.0%. Furthermore, characterization of floc particle size and fractal dimension across different harvesting stages confirmed that the role of that CTAB enhanced the utilization efficiency of CGG. The introduction of 20 mg L −1 CTAB increased the median floc diameter from 7.9–16.2 μm to 10.3–22.8 μm, while simultaneously improving floc compactness as evidenced by structural analyses. These findings provided a combined flocculation-flotation process for efficient microalgae harvesting and deeper insights into the synergistic effect of flocculant-collector on microalgae.
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Houchao Jing,Jinyang Feng,Jianping Shi,Lin He,Peipei Guo,Shuang Guan,Hai Fu,Yuhui Ao
Hydrogels that exhibit properties such as ultra-elongation, self-recovery, and self-healing have applications in sensors and many other fields. With these properties and applications in mind, we hypothesised that we could develop a strain-sensing hydrogel based on acrylic acid , stearyl methacrylate , cationic guar gum , and hexadecyl trimethyl ammonium bromide, without any covalent crosslinker. The hydrogels are instead held together by physical, non-covalent interactions such as ionic interactions, hydrogen bonding , and the hydrophobic effect , as suggested by spectroscopy and swelling experiments. The hydrogels exhibit many useful properties, such as: excellent stretching—up to 4267%—and almost complete reversion to their original state at a large strain of 500%, even after 20 successive cycles; temperature-dependent self-healing and self-recovery; and strain-sensitive conductivity that is attributable to the directional migration of ions. Because of these outstanding features, such as notch-insensitivity and the ability to withstand knotting under high strain, our hydrogels will be useful as flexible sensors.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Qiuyun Shao,Yue Zheng,Zixuan Qin,Kaihui Nan,Ravin Narain,Yangjun Chen
Open wounds not only cause bleeding but also increase the risk of bacterial contamination, which can lead to infection and inflammation. Therefore, it is imperative to develop wound dressings that integrate both antibacterial and hemostatic functionalities. Herein, we report a natural polysaccharide-based cationic hydrogel (QFCG) via the phenylboronic ester reaction between QCS-FPBA and cationic guar gum (CGG). Owing to the superior reversibility of phenylboronic ester bonds, this hydrogel demonstrated remarkable self-healing, adaptive, and injectable properties. Moreover, through both electrostatic interactions and phenylboronic ester chemistry on the bacterial surface, the antibiotic-free cationic hydrogel efficiently aggregated a substantial number of bacteria, leading to their effective inactivation. In vitro blood coagulation study demonstrated that the positively charged QFCG hydrogel could significantly enhance blood cell aggregation via electrostatic adsorption. Further in vivo results demonstrated that the QFCG hydrogel can rapidly achieve hemostasis in a liver hemorrhage model, highlighting its significant potential for wound healing applications. Therefore, the QFCG hydrogel represents a new effective wound dressing, and our study may provide valuable insights for the rational design of polysaccharide-based hydrogels for wound healing.
研究领域:
生物材料学
·
创伤医学
·
高分子科学
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药剂学
·
再生医学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Youjie Sheng,Tiantian Wang,Hanling Zhang,Li Ma,Yang Li,Shanwen Zhang,Die Hu
Highly stable foams co-stabilized by nanoparticles (NPs) and biopolymer have good foaming ability and foam stability, which ensures the reliability and efficiency of the foam during the fire extinguishing process. It is worth noting that the addition of NPs and biopolymers significantly affects the flow characteristics of the foam in the pipeline and its structural stability, which play a key role in the fire extinguishing process. Therefore, it is very important to understand the effect of the addition of different types of biopolymers on the rheological properties of nano-stabilized foams. In this paper, the effects of the two biomacromolecular polymers, xanthan gum (XG) and guar gum (GG), on rheological properties of highly stable foams of FS-50/APG-0810/nano-β-Al 2 O 3 were investigated. The results showed that the stability and viscoelasticity of mixed dispersions in the presence of both NPs and biopolymer were significantly higher than in the presence of NPs alone. Compared with XG, GG exhibited better foam stability, flow behavior, and viscoelasticity when interacting with NPs, and the corresponding foam formed has a higher capacity of shear resistance. This study can provide theoretical support for the development of firefighting foam with NPs and biopolymer stability.
研究领域:
材料科学
·
消防工程
·
应用化学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Chufan Yang,Yan Wang,Zhiyuan Zhang,Chen Wang,Fangzheng Yu,Zheng Zhao,Zhenyu Wang,Lingling Zhang
The healing of bacteria-infected wounds has long posed a significant clinical challenge. Traditional hydrogel wound dressings often lack self-healing properties and effective antibacterial characteristics, making wound healing difficult. In this study, a bioactive small molecule cross-linking agent 4-FPBA/Lys/4-FPBA (FLF) composed of 4-formylphenylboronic acid (4-FPBA) and lysine (Lys) was utilized to cross-link guar gum (GG) and a tannic acid/iron (TA/Fe 3+ ) chelate through multiple dynamic bonds, leading to the formation of a novel self-healing hydrogel dressing GG-FLF/TA/Fe. The hydrogel exhibited excellent stretchability and self-healing ability, which enabled it to adapt to irregular wound sites. Meanwhile, the hydrogel demonstrated remarkable antibacterial efficacy (>99 %) facilitated by the synergistic effects of photothermal properties and aromatic Schiff bases. Additionally, it had adjustable rheological properties, good mechanical characteristics, conductivity, antioxidant characteristics and biocompatibility. Notably, the GG-FLF/TA/Fe hydrogel dressing irradiated with NIR displayed superior therapeutic effects in a mouse wound infection model (wound healing rate: 94.8 %), promoting recovery from bacterially infected wounds by enhancing collagen deposition, facilitating the formation of skin appendages and blood vessels, and regulating inflammatory factors. In summary, this study presented a novel approach to prepare biologically active antibacterial polysaccharide hydrogels and highlighted the substantial potential of this hydrogel as a biomedical antibacterial dressing.
研究领域:
生物医学工程
·
材料科学
·
感染与免疫
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产品关联
DOI
PubMed
高影响因子
TEXTILE RESEARCH JOURNAL
·
2017
·
IF 1.443
Lili Wang,Xiancheng Wang,Yifeng Shen,Jianzhong Shao,Fuyu Pei
S-triazine di-sulfanilic guar gum (TSG) was successfully prepared by monochlorotriazine di-sulfanilic (TS) and guar gum (GG) in order to improve the printing properties in reactive printing. The results showed that the optimized synthesis condition of TSG was at sodium carbonate solution 1.2 g/L at 90℃ for 75 min through the single-factor experiment. Compared to GG, TSG had better flowability, mainly viscous effects and higher viscosity recoverability, which was more appropriate as a thickener in reactive printing. In the cotton printing experiment, TSG had higher paste add-on, color yield, penetration and levelness than GG. Furthermore, the printing effects of TSG on cotton drew near to those of sodium alginate, which could obtain evenly colored large patterns and excellent outline sharpness.
研究领域:
纺织化学
·
材料科学
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DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2022
·
IF 5.999
Mingze Xu,Han Qin,Yuxin Zheng,Jiapeng Chen,Xuanxi Liang,Jinpeng Huang,Wenfeng Luo,Runcai Yang,Yan-Qing Guan
The use of intelligent insulin delivery systems has become more important for treating diabetes. In this study, a dual-responsive oral insulin delivery nanocarrier that responds to glucose and pH has been developed. First, the oleic acid hydrophobic modified guar gum (GG) was synthesized by the esterification reaction, and the γ-polyglutamic acid (γ-PGA) was coupled with GG by the amidation reaction. The obtained pH-responsive copolymer (γ-PGA-GG) was cross-linked by concanavalin A to obtain pH/glucose dual-responsive nanocarriers, and insulin was effectively loaded into the dual-responsive nanocarriers. The insulin-loaded nanoparticles can achieve effective pH and glucose responses, releasing insulin on demand. In vitro and in vivo studies demonstrated the dual-responsive nanoparticles can protect insulin against the pH changes in the digestive tract and deliver insulin into the body to exert a hypoglycemic effect. Moreover, the dual-responsive nanoparticles have significant potential to be employed for oral insulin delivery.
研究领域:
药学
·
纳米技术
·
糖尿病研究
·
药物递送系统
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Yu Cheng,Kanglei Pang,Xiao Wu,Zhiguo Zhang,Xiaohui Xu,Junkai Ren,Wei Huang,Rui Song
Herein, we report a simple in situ hydrothermal synthetic method for the preparation of novel three-dimensional (3D) nanoflowers forming with few-layered and expanded interlayer spacing MoS2 nanoflakes via restricting the polymerization of guar gum and the growth of MoS2. In this process, hexaammonium molybdate ((NH4)6Mo7O24·4H2O) and thiourea (CH4N2S) acted as the precursor of molybdenum and sulfur respectively, while guar gum functioned as both the template of chemical reaction and carbon source. The obtained MoS2/guar gum carbon hybrid nanoflowers (MoS2/CF) in a well-assembled 3D nanoflowers architecture provides copious active sites and thus prevents inherent stacking among MoS2 layers. Because of all these advantages, the electrochemical evaluation demonstrates that MoS2/CF-750 shows extraordinary hydrogen evolution reaction electrocatalytic performances, possessing extremely low onset potential of approximately 20 mV, low overpotential of ∼125 mV at 10 mA cm–2 and an extraordinary small Tafel slope of 34 mV dec–1, which is nearly identical to that of bulk platinum (Pt), “the gold benchmark” for hydrogen production. Moreover, the strong interactions between MoS2 nanoflakes and guar gum enable MoS2/CF-750 long-term stability and microstructural integrity, presenting nearly 100% activity retention after 2000 cycles and ∼95% after 16 h of chronoamperometry assessment (0.15 V). The preparation strategy is simple, inexpensive, and readily scalable, and could be extended to diverse 3D non-noble metal electrocatalysts.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量转换
·
催化
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DOI
高影响因子
危险品化学品经营许可证（带存储）