INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shuo Shi,Xiaodan Wu,Ying Wang,Wenxin Li,Hao Zhang,Xinjiang Lou,Xiufang Xia,Weiwei Liang
In this study, hydrophobic sodium alginate/anthocyanin/cellulose nanocrystal indicator films were fabricated by incorporating nanosilica (NS) as a waterproofing layer. The concentrations and formation methods (spraying (S), coating (C), and impregnation (I)) of the NS layer (denoted as NSS, NSC, NSI, respectively) were optimized. The results indicated that the optimum concentration of the NS layer was 5 % at a water contact angle (WCA) 110.5°. Further, Fourier transform infrared spectra showed the presence of Si O Si and Si CH 3 groups in the NSS, NSC, and NSI films, and X-ray diffraction spectra indicated that original structures of these films were disordered. Moreover, the surface morphology, mechanical properties, and light transmission were affected by the NS layer, and the optimal layer was found to be NSI. After 10 days of storage at 100 % humidity, the NSI film exhibited low water vapor adsorption (37.22 g) and permeability (0.1484 g/m·s·Pa·10 −11 ) and a high WCA (110.2°). In addition, the NSI film exhibited a visible color shift with an increasing pH of the buffer solution. A monitoring test of fish freshness showed that the NSI film displayed a distinctive color change corresponding to fish spoilage during 14 days of storage. This indicates that NSI has high potential in indicator film applications.
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DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Tiancheng Xiong,Haohao Wang,Haoyang Sun,Jing Zhao,Maoning Li,Qingyuan Du,Dandan Li,Yu Nan,Zhi Zhang,Dazhi Sun
Coir fibers are commonly subjected to alkali treatment to eliminate impurities and tune their mechanical properties. However, this process can damage the fibers’ microstructures, posing a challenge in significantly enhancing both strength and toughness simultaneously. Herein, we successfully enhanced both strength and toughness of coir fibers through a combined treatment with NaOH and sodium alginate aqueous solution. Coir fibers treated with 5 wt% NaOH solution, followed by 0.5 wt% sodium alginate solution, exhibit a tensile modulus of 2475.0 MPa, a tensile strength of 126.4 MPa, and a toughness of 30.7 MJ/m³, representing improvements of 57.1 %, 72.7 %, and 116.2 %, respectively, compared to the raw fibers. Mechanistic studies revealed that NaOH treatment effectively removes pectin, hemicellulose and lignin from coir fibers but introduces numerous defects. Sodium alginate can repair these defects by forming hydrogen bonds with the rich oxygen-containing group of coir fibers. The combined treatment also increases the crystallinity of coir fibers from 30.3 % for the raw fibers to 44.1 % by removing a large number of amorphous substances. Additionally, the combined treatment reduces the microfibril angle from ∼63.6° to ∼46.6° by elongating the helix structure and filling the gaps between helical fibers. Our cost-effective strategy not only promotes the applications of coir fibers but also provides guidance for the modification of other natural plant fibers.
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高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 3
·1-17
·
IF 21.8
Cui Dapeng,Sun Yunlong,Li Tuo,Hu Zhiwei,Zhao Yi,Wang Xuanye,Chen Shengxi,Toktarbay Zhexenbek,Wei Huige
Herein, an ionic hydrogel using sodium alginate (SA) toughened polyacrylamide (PAM)/gelatin semi-interpenetrating network with both high strength and high ductility for stress sensing is constructed. In the designed PGS-Ca 2+ /LiCl (short for PAM/Gelatin/SA-Ca 2+ /LiCl) hydrogel network, PAM acts as a flexible hydrophilic skeleton, and gelatin acts as a flexible secondary network. The addition of SA inhibits the phase separation of gelatin and improves the transparency of hydrogel. Meanwhile, the macromolecule SA complexes with metal ions of Ca 2+ , leading to the formation of a distinct complex structure which remarkably enhances the mechanical robustness of the hydrogel. Moreover, the incorporation of inorganic salt LiCl confers high electrical conductivity, concomitantly reducing the freezing point, mitigating water loss, and enhancing the environmental stability of the hydrogel, thereby endowing the hydrogel with improved adaptability to diverse operating conditions. PGS-Ca 2+ /LiCl has excellent mechanical properties and ultra-high ductility (with a tensile strength up to 110 kPa at break, a strain up to 1500% at break), as well as high stress sensing properties (with an excellent GF of 1.07, a pressure sensitivity of 0.0107). In addition, a handwriting sensor, a Morse code sensor, and an 8 × 8 sensor have been designed to recognize different signals and show the movement of objects and different pressures, which shows that PGS-Ca 2+ /LiCl ionic hydrogels have great potential in electronic skin, wearable and flexible devices.
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高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Hong-yan Wu,Wen-kai Wu,Bo Chen,Qiao-ping Kong,Jian-jun Lian
The gradual increase of antibiotics and heavy metals in aquatic environments poses a serious threat to human health and ecosystems, and finding effective methods for simultaneous removal of antibiotics and heavy metals has attracted increasing concern. In this study, a novel porous structure of thiourea-modified sodium alginate microspheres (UA-Ca) was synthesized by modification with thiourea, epichlorohydrin, and calcium chloride, and was applied for the simultaneous removal of tetracycline (TC) and Cu(II) from water. The results indicated that the UA-Ca material with 1:2 mass ratio of thiourea and sodium alginate showed the highest removal of TC and Cu(II) under the reaction condition of pH= 7. The removal process of both TC and Cu(II) follows the pseudo-second-order adsorption model and Langmuir isotherm model. UA-Ca had a high adsorption capacity toward TC and Cu(II) with the maximum value of 1.099 mmol/g and 2.793 mmol/g based on the Langmuir model at 298 K, respectively. Thermodynamical parameters revealed that TC and Cu(II) adsorption is spontaneous with endothermic nature. Competing ionic cations (Ca 2+ 、Mg 2+ 、NH 4 + ) and organics (sulfamethoxazole, hygromycin) had a certain inhibitory effect on the removal of TC and Cu(II) by UA-Ca, whereas the anionic ions (CO 3 2- 、PO 4 3- 、SO 4 2- ) all had little effect on its removal. Fourier transform infrared spectra and X-ray photoelectron spectroscopy analyses showed that the removal of TC and Cu(II) by UA-Ca was mainly due to electrostatic adsorption and surface complexation. This work provides a promising UA-Ca material for the effective removal of TC and Cu(II) in contaminated water.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Chongjun Zhao,Yingying Rong,Tenghui Huang,Yanyu Guo,Puqi Geng,Chunhua Zhao
Biomass-derived carbon has been widely used as active material in supercapacitor. However, two or more kinds of biomass-derived carbon composite is still not distinctly aware and seldom used. In this work, the carbon composite is brought forward by taking corn stalk (CS) and sodium alginate (SA) as source examples, which owns hierarchical porous structure and thus a higher specific surface area (SSA) (2658.97 m 2 g −1 ) and specific pore volumes (0.98 cm 3 g −1 ) than those single component carbon from pure CSC (1698.67 m 2 g −1 ) or SAC (2564.06 m 2 g −1 ). The optimized carbon composite of CSSAC-5 exhibits a high specific capacitance of 435 F g −1 at the current density of 0.5 A g −1 and a high retention up to 97.8 % after 10,000 repeated charge-discharge cycles. Moreover, symmetric supercapacitor (SSC) of CSSAC-5//CSSAC-5 delivers an energy density of 18.96 Wh kg −1 at 250 W kg −1 and 14.58 Wh kg −1 at 5000 W kg −1 , as well as a retention of 83.7 % after 10,000 cycles. The strategy of carbon composite will efficiently expand the carbon sources of active materials and push the exploitation of the high performance supercapacitor.
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高影响因子
Foods
·
2024
·Vol. 13
·期 24
·4156
·
IF 4.7
Cunshe Chen,Sihan Zheng,Zexun An,Zhihua Pang,Xinqi Liu
This study investigates the oral processing characteristics and application of soybean fiber and sodium alginate microgel in enhancing the texture and sensory attributes of low-fat yogurt. By combining soybean fiber with sodium alginate, a stable composite microgel system was developed with a uniform particle-size distribution. Oral lubrication performance was assessed by evaluating particle size, texture, friction coefficient and rheological properties, providing insights into how microgels improve food lubricity. The results showed that adding soybean fiber/sodium alginate microgel to low-fat yogurt significantly enhanced lubrication, texture and sensory quality compared to standard low-fat yogurt. The yogurt sample containing 2 wt% microgel achieved optimal sensory results, improving hardness and adhesiveness. This study suggests that soybean fiber/sodium alginate microgel offer a promising strategy for enhancing the sensory quality in low-fat dairy products, supporting healthier food innovations.
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PubMed
高影响因子
ACS Biomaterials Science & Engineering
·
2025
·
IF 5.5
Yaru Han,Chuanwen Wang,Meitong Liu,Baojin Ma,Shaohua Ge,Yang Yu
Postextraction wound healing under inflammatory conditions remains a crucial clinical challenge due to persistent oxidative stress and compromised bone regeneration. To address this critical issue, injectable hydrogel dressings offer a promising strategy for inflammatory wound healing after tooth extraction. Herein, we developed an epigallocatechin gallate (EGCG)-loaded sodium alginate/zinc ion (SA/Zn2+) composite hydrogel (designated SZE) through ionic cross-linking and multiple physical bonding interactions. The SZE hydrogel with high cytocompatibility could effectively scavenge intracellular ROS, protect mitochondria, inhibit the expression of inflammatory factors, and modulate macrophage polarization, as well as enhance the osteogenic differentiative potential of bone marrow mesenchymal stem cells. Meanwhile, the SZE hydrogel demonstrated good bactericidal effects against Staphylococcus aureus and Escherichia coli. Based on in vivo rat extraction socket models with/without S. aureus infection, SZE accelerated socket healing by eliminating infection, alleviating oxidative stress, inhibiting excessive inflammation, and promoting bone regeneration and effectively augmented infected socket healing. Overall, our research indicates that the developed SZE hydrogel offers a promising strategy for achieving accelerated and ideal healing of extraction sockets, especially under bacteria-infected inflammatory conditions.
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Junzhu Li,Weiping Jin,Wei Xu,Gang Liu,Qingrong Huang,Zhenzhou Zhu,Shuyi Li,Shuiyuan Cheng
Similarities and differences of assembly for ovalbumin (OVA) and two kinds of sodium alginate (SA1 and SA2) varying in charge densities (λ SA1 : λ SA2 ≈ 2:1) were investigated. The assembly processes of OVA/SA mixtures were characterized by phase diagram, particle size, and microstructure. Two differences between OVA/SA1 and OVA/SA2 mixtures in the phase diagram were distinctly observed. First, due to the higher charge density of SA1, the strong interaction between OVA and SA1 caused only pH φ1 to be recorded. A higher linear charge density of SA1 narrowed the pH φ1 -pH φ2 range at ratios of 2:1 and 1:1. Second, OVA/SA1 complexes formed a coacervate with a relatively strong resistance to ion-induced shielding effects. This maintained the smaller size (tighter structure) with a larger number of complexes in the coacervate without 250 mM NaCl. The regulating polysaccharides with different charge densities could control the soluble region of complexes and endow various size or morphology of the coacervate assembled by proteins and polysaccharides.
研究领域:
食品科学
·
生物化学
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高影响因子
Journal of Nanoelectronics and Optoelectronics
·
2020
·Vol. 15
·期 2
·219-225
·
IF 0.771
Wang Zhe,Li Wenyao,Zhang Kenan,Jiang Haishun,Ji Tao,Li Jiaojiao,Liu Jingjing,Han Weihua
The global abuse of antibiotics has led to many environment problems such as water pollution and drug-resistant bacteria. In this study, pure natural loofah was used as raw material to form powdered loofah activated carbon (LAC) after high temperature carbonization annealing, and sodium
alginate (SA) with gel ability was combined to prepare loofah activated carbon sodium alginate (LAC-SA) hydrogel sphere by external emulsification method. This work showed that the adsorption mechanisms of LAC-SA microspheres for the three antibiotics of ofloxacin (OFO), tetracycline (TC)
and norfloxacin (NFO) were in line by the psedosecond-order and the formula of Langmuir. The ofloxacin (OFO) antibiotic solution was used as a sample for cyclic adsorption experiment for 10 times and the cumulative adsorption amount exceeded 700 mg g–1.
研究领域:
环境科学
·
材料科学
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高影响因子
POLYMER TESTING
·
2021
·
IF 4.282
Jing Zhang,Pai Peng,Lingdong Chen,Liping Zhao,Jie Feng
In recent years, hydrogels with antifouling properties and good biocompatibility have attracted great attention in bio-devices, but most of them are lack of eminent mechanical properties that limit their practical application greatly. In this work, a newly hybrid ion-covalent cross-linked double network (DN) hydrogels with excellent antifouling as well as mechanical properties were prepared by a simple one-pot method based on sodium alginate and a kind of antifouling material, N -hydroxyethyl acrylamide (HEAA). The DN hydrogel have excellent mechanical properties, including high tensile strength (1.32 MPa), high elastic modulus (0.31 MPa) and preeminent fatigue resistance. Besides, the DN hydrogel have good antifouling properties suggested by protein adsorption and cell adhesion experiments. In addition, they also exhibit highly in vitro compatibility. These properties make the DN hydrogels suitable for application in different fields, such as tissue scaffolds, implantable devices and so on.
研究领域:
生物材料
·
组织工程
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高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Haoyue Ning,Lixin Lu,Jing Xu,Lijing Lu,Liao Pan,Zidong Lin
The purpose of this study was to compare the effects of different concentrations of the amine-functionalized isoreticular metal-organic framework-3 loaded with carvacrol (IRMOF-3/CA) on the properties of sodium alginate (SA) composite films, thus determining the optimal addition amount and further preparing bioactive packaging film with antibacterial and antioxidant activities. The morphology, structure, physical properties, antioxidant and antibacterial activities of the films were characterized and analyzed. The results showed that the thermal stability and light barrier property of the films were improved by the addition of IRMOF-3/CA. When the additional concentration was 0.4 wt%, the tensile, water vapor barrier and hydrophobic properties of the films were increased by 30.13%, 9.06% and 46.43% respectively compared with those of pure SA film. Moreover, the film added with IRMOF-3/CA had sustained antioxidant and antibacterial activities , and had an apparent fresh-keeping effect on pork, suggesting its application potential in food packaging.
研究领域:
食品科学
·
材料科学
·
生物化学
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高影响因子
MATERIALS & DESIGN
·
2020
·
IF 6.289
Fenghua Tao,Yanxiang Cheng,Hai Tao,Lin Jin,Zhihui Wan,Fangfang Dai,Wei Xiang,Hongbing Deng
Periosteum provides nourishment to bones and facilitates osteogenesis. The structural and functional impairment of periosteum can cause bone regeneration difficulties. Artificial periosteum with suitable mechanical properties and chemical composition can effectively guide bone tissue regeneration. In this study, a polycaprolactone (PCL)/carboxymethyl chitosan (CMCS)/sodium alginate (SA) micron-fibrous bionic periosteum was prepared. The water-in-oil PCL-CMCS/SA emulsion was prepared by using Span 80 as the emulsifier, and the PCL/CMCS/SA composite micron-fibers were fabricated by emulsion electrospinning. The physicochemical properties of the PCL/CMCS/SA micron-fibers were investigated via SEM, FTIR and tensile test analyses. CCK8 assay, live/dead assay, cell adhesion, and qPCR tests were carried out to evaluate the osteoinductive capacity of the micron-fibers and their biocompatibility to MC3T3-E1 osteoblasts. The results showed that CMCS and SA were successfully immobilized in the micron-fibers. The PCL/CMCS/SA micron-fibers showed an average diameter of 2.381 ± 1.068 μm with excellent tensile strength. The PCL/CMCS/SA composite scaffold demonstrated no significant cytotoxicity and could facilitate osteoblast adhesion. In addition, it could upregulate the early expression of osteogenic genes ALP and Runx2. The PCL/CMCS/SA micron-fibers prepared by emulsion electrospinning showed good mechanical properties, excellent biocompatibility and osteoinductive capacity to osteoblasts, and could be used as potential transplantable scaffolds for repairing large-segment bone defects.
研究领域:
生物材料
·
组织工程
·
骨科
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高影响因子
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