BIOMACROMOLECULES
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2024
·
IF 5.5
Min Cui,Shuwei Liu,Xuelai Xie,Jinhong Yang,Tianyuan Wang,Yuyang Jiao,Min Lin,Kunyan Sui
Material reinforcement commonly exists in a contradiction between strength and toughness enhancement. Herein, a reinforced strategy through self-assembly is proposed for alginate fibers. Sodium alginate (SA) microstructures with regulated secondary structures are assembled in acidic and ethanol as reinforcing units for alginate fibers. Acidity increases the flexibility of the helix and contributes to enhanced extendibility. Ethanol is responsible for formation of a stiff β-sheet, which enhances the modulus and strength. The structurally engineered SA assembly exhibits robust mechanical compatibility, and thus reinforced alginate fibers possess an improved tensile strength of 2.1 times, a prolonged elongation of 1.5 times, and an enhanced toughness of 3.0 times compared with SA fibers without reinforcement. The reinforcement through self-assembly provides an understanding of strengthening and toughening mechanism based on secondary structures. Due to a similar modulus with bones, reinforced alginate fibers exhibit good efficacy in accelerating bone regeneration in vivo.
研究领域:
材料科学
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生物材料
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生物医学工程
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jie Song,Lijun Chen,Yingnan Zhou,Zhiwen Yuan,Yuhua Niu,Zhiqiang Wei
With the rapid development of industrialization, the removal of heavy metal ions and small organic molecules from wastewater has triggered a hot debate. ZIF-8 was grown on a sodium alginate backbone using an in situ growth technique, the core-shell P-SMG@ZIF-8 was synthesized. It was also characterized by FTIR, XRD, SEM, UV–Vis and XPS, and the optimal conditions and mechanism of adsorption were explored. At pH 2.0, a contact time of 200 min, and 298 K, removal of Cu(II) and Ph up to 80.2 %, 65.6 % by P-SMG@ZIF-8, adsorption behavior consistent with Langmuir model for pseudo-secondary rates, the saturated adsorption of Cu(II) and Ph could reach up to 83.5812 mg/g and 78.1779 mg/g, respectively. And the adsorbed P-SMG@ZIF-8 is easy to separate and reusable, which is a cost-effective and efficient natural product-based adsorption material.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Yazhou Guo,Yonggang Du,Guibo Liu,Yuyan Bi,Weiqiang Xu,Yahui Cui,Yulei Jia
Herein, a novel and high-performance adsorbent, polyaniline-sodium alginate (PANI–SA) hydrogel microspheres were prepared via ion cross-linking technique for adsorption and removing methylene blue (MB) dye from wastewater. The processes involved synthesizing polyaniline (PANI) with macromolecular skeleton and doping it into sodium alginate (SA) to prepare hydrogel microspheres with high specific surface area, abundant functional groups, and excellent adsorption properties. The surface morphology, crystallinity, functional groups, thermal stability, pore size distribution, and specific surface area of PANI–SA hydrogel microspheres and their components were determined by SEM, XRD, FTIR, TGA, and BET. Various parameters, including polyaniline doped concentration, solution pH, initial dye concentration, adsorption time, and temperature were systematically investigated to understand their impact on the adsorption properties of PANI–SA. The results revealed a synergistic effect between PANI and SA, with PANI–SA exhibiting exceptional efficacy (1060.78 mg/g) in removing MB from aqueous solutions. The kinetics and isotherm adsorption behaviors were aptly described by the pseudo-first-order kinetic and the Langmuir isotherm models, respectively. Thermodynamic analyses confirmed the spontaneous and exothermic nature of adsorption. Furthermore, the PANI–SA hydrogel microspheres demonstrated excellent reusability, maintaining high adsorption capacity after 5 recycling rounds. Electrostatic interactions and hydrogen bond were found to be the primary mechanisms driving the adsorption process. This study not only contributes to the development of efficient and eco-friendly adsorption materials for dye wastewater treatment but also provides insights into the design and optimization of hydrogel adsorbents.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Haike Li,Zhiyun Kong,Huan Zhang,Xiaolei Wang,Yaohua Xie,Xingqing Zhao,Yidan Hong
It is necessary to prepare a nanofiltration membrane with high permeation flux that can be used in the field of organic solvents. Gel membranes have a high solvent permeation flux, but their chained macromolecular structure is often unstable. In this study, tannic acid-bridged sodium alginate (TA x -Ca/FeSA) organic solvent nanofiltration (OSN) membranes were prepared by the phase transition method using aqueous Ca 2+ and Fe 3+ solutions as cross-linking agents. TA can interact with SA through hydrogen bonding hydrophobic bonding and other interactions to form an interpenetrating three-dimensional network structure. Compared with Ca/FeSA membrane, the average pore size of TA 0.125 -Ca/FeSA membrane was reduced from 1.03 nm to 0.74 nm, and the porosity was increased from 47.62 to 59.2 %. In addition, the TA 0.125 -Ca/FeSA membrane has the characteristics of a negative charge, super hydrophilicity, and high mechanical properties, exhibits a high permeation flux of 48.97 L·m −2 ·h −1 ·bar −1 with a rejection of 96.25 % for Congo red ethanol solution, has excellent solvent resistance, stain resistance, and self-cleaning ability. The TA 0.125 -Ca/FeSA membrane was demonstrated to have great potential for application in the fields of purification and solvent recovery.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yuanhong Cai,Peipei Xu,Runbing Huang,Jiayi Huang,Junhua Zhan,Junpeng Su,Ruiyun You,Yudong Lu
This study presents the development of a novel polysaccharide biomolecule composite microsphere system based on sodium alginate (SA) and tremella fuciformis polysaccharide (TFP) for the encapsulation and controlled release of camellia oil (CO). The system leverages the synergistic properties of these two bioactive biopolymers to enhance the protection and bioavailability of CO during simulated digestion. The microspheres, characterized by their spherical structure and uniform particle size distribution, were comprehensively evaluated for stability, elemental composition, and thermal stability using techniques such as scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA). The results confirmed a significant improvement in the elemental composition and surface properties of the microspheres due to the incorporation of CO, which enhanced their stability. In simulated digestion experiments, the microspheres demonstrated excellent gastric acid tolerance and intestinal release, achieving a high encapsulation efficiency of 99.59 % and an oil loading capacity of 80.67 %, effectively protecting and targeting the release of CO. Moreover, the microspheres exhibited significant antibacterial activity against Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ). Overall, the SA/TFP/CO microspheres represent an ideal delivery system for CO, demonstrating considerable potential in the fields of food science and biomedicine.
研究领域:
食品科学
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生物医学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Dong Shu,Lingling Fan,Wei Gong,Dezhan Ye,Zikui Bai,Jie Xu
Utilizing inexhaustible solar energy for water purification represents a green and sustainable solution to water scarcity. However, the developments of efficient, inexpensive, convenient and reliable photothermal materials remain a major challenge. Herein, a facile and versatile preparation strategy of sodium alginate (SA)-CuS composite coating with superior adhesion and stability has been proposed toward high-efficiency solar-driven interfacial evaporation. The fabrication process can be quickly completed in aqueous solution with cheap reagents. The SA-CuS coating can be firmly adhered on different substrates, which can withstand rinsing treatment, iterative freeze-thaw cycles as well as high and low pH environments. The SA-CuS coating can convert various substrates into photothermal materials with broad light absorption for desirable solar evaporation because of high CuS loading and rough surface. As a proof of concept, a wood evaporator covered with the SA-CuS coating can achieve a water evaporation rate of ∼2.2 kg m −2 h - 1 under one sun illumination, which is superior to most reported wood-based solar evaporators.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Polymers
·
2019
·Vol. 11
·期 3
·524
·
IF 3.164
Yi Chen,Yueyun Zhou,Wenyong Liu,Hejie Pi,Guangsheng Zeng
In order to improve the performance of traditional sodium alginate (SA) hydrogels cross-linked by Ca2+ions to meet greater application demand, a strategy was designed to structure novel SA-based gels (named OP-PN gels) to achieve both stimulus responsiveness and improved mechanical strength. In this strategy, the SA chains are co-cross-linked by CaCl2and cationic octa-ammonium polyhedral oligomeric silsesquioxane (Oa-POSS) particles as the first network, and an organically cross-linked poly(N-isopropyl acrylamide) (PNIPA) network is introduced into the gels as the second network. Several main results are obtained from the synthesis and characterization of the gels. For OP-PN gels, their properties depend on the content of both uniformly dispersed Oa-POSS and PNIPA network directly. The increased Oa-POSS and PNIPA network content significantly improves both the strength and resilience of gels. Relatively, the increased Oa-POSS is greatly beneficial to the modulus of gels, and the increased PNIPA network is more favorable to advancing the tensile deformation of gels. The gels with hydrophilic PNIPA network exhibit better swelling ability and remarkable temperature responsiveness, and their volume phase transition temperature can be adjusted by altering the content of Oa-POSS. The deswelling rate of gels increases gradually with the increase of POSS content due to the hydrophobic Si–O skeleton of POSS. Moreover, the enhanced drug loading and sustained release ability of the target drug bovine serum albumin displays great potential for this hybrid gel in the biomedical field.Keywords:octa-ammonium POSS;sodium alginate;hydrogels;temperature responsiveness
研究领域:
材料科学
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生物医学工程
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DOI
PubMed
高影响因子
CELLULOSE
·
2019
·Vol. 26
·期 10
·6291-6302
·
IF 3.917
Sheng Junjiao,Li Junrong,Zhao Lihong
The oleophilic nature of paper often limits its use in applications that involve direct contact with grease, but now the generation of oil-repellent surfaces has almost universally deployed environmentally detrimental approaches relying on fluorinated compounds. In this paper, non-toxic fluoro-free grease-proof papers coated with sodium alginate (SA)/sodium carboxymethyl cellulose and SA/propylene glycol alginate were prepared, the maximum of kit values reached 9. The coatings completely covered the base paper surface and penetrated into the interfiber networks to some extent, and the modified mechanical properties were obtained. It was found that the lower the air permeability was, the better the oil resistance of the biopolymer coatings on fiber substrate was. For coatings with high surface energy, as the surface energy is dominated by the polar part, the stronger the polarity, the greater the repulsion to oil. The reduction of surface energy can effectively improve the anti-wettability for oil and water.
研究领域:
材料科学
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化学工程
·
环境科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Long Huo,Feixiang Gao,Maokui Li,Junhang Wang,Xuanyu Li,Jianwei Bai,Haoyuan Wu,Hayinaer Azhati,Chunhong Zhang
The sustainable development of nuclear power hinges on accessing sufficient and stable uranium resources. Although the ocean contains abundant uranium, its low concentration and the presence of various interfering ions pose great challenges to extracting uranium from seawater. Herein, the sodium alginate-polyamidoxime/hyperbranched polyamide hydrogel spheres with high stability and adsorption capacity were developed. The gel spheres are molded by crosslinking sodium alginate with Ca 2+ and form a three-dimensional network structure through the covalent cross-linking of glutaraldehyde, which endows the hydrogel spheres with great stability and forms a pore structure. Accordingly, the unique spherical structure endows it with unparalleled recovery performance, enhancing its ability to efficiently recycle after uranium extraction. Adsorption experiments show that the maximum capacity reaches 537.8 mg·g −1 at a pH of 6. Notably, the hydrogel spheres can adsorb uranium over a larger pH range and maintain morphological stability, which makes them suitable for uranium recovery in complex situations like seawater. Furthermore, the adsorption capacity was successfully preserved in five adsorption–desorption cycles, with a high removal rate from 95.07 % to 87.37 %. The dynamic cycle experiment reveals that uranium extraction in real seawater can still reach 82.59 %, indicating a high potential for seawater applications.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Magnesium and Alloys
·
2021
·
IF 10.088
Qingyun Fu,Weihong Jin,Mingcheng Feng,Jingyao Li,Jian Li,Wei Li,Zhentao Yu
Although magnesium (Mg) and its alloys are proposed as the next generation orthopedics transplanted materials, their clinical applications are limited by the fast degradation. To reduce the degradation rate, a strong adhesion poly-dopamine (PDA) layer was introduced as an intermediate layer for the subsequent alginate (ALG) spin-coating on high-purity Mg. The surface morphology and chemical composition were detected by scanning electron microscope, energy disperse spectroscopy, and Fourier transform infrared spectroscopy. The corrosion resistances of all samples were evaluated by electrochemical and 10-day immersion tests in Hanks’ balanced salt solution. Our results suggest that the thickness of the fabricated PDA/ALG composite coating is 8.58 ± 0.65 µm, and the intermediate PDA layer evidently enhances the adhesion between the substrate and ALG coating. The corrosion current density of Mg coated with the PDA/ALG composite coating decreases more than 10 times compared to that of the Mg substrate, and the charge transfer resistance is 12 times bigger than that of the bare Mg, which indicates the improved corrosion resistance. Moreover, the mechanism of corrosion protection of the composite coating is also discussed.
研究领域:
生物医学工程
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材料科学
·
腐蚀与防护
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DOI
高影响因子
Soft Matter
·
2022
·Vol. 18
·期 8
·1644-1652
·
IF 4.046
Wenshuai Zhang,Lingxiao Xu,Meijin Zhao,Yuning Ma,Ting Zheng,Lei Shi
Developing multifunctional hydrogels with stretchability, self-healing ability, adhesiveness, and conductivity into flexible strain sensors for human motion and health monitoring has attracted great attention and is highly desired. However, the present motion detectors mainly focus on stretching, bending, and twisting of different body parts while the expansion–contraction motion has been rarely investigated. In this study, along with carbon nanotubes (CNTs) as conductive components, sodium alginate (Alg) modified with 3-aminophenylboronic acid (PBA) and dopamine (DA) were synthesized and employed as precursors to prepare a multifunctional Alg-CNT hydrogel. The formed dynamic covalent bonds between PBA and DA endowed the hydrogel with a rapid self-healing property (30 s) while the introduction of CNTs remarkably enhanced the mechanical strength and electrical conductivity of the hydrogel. Moreover, the as-prepared hydrogel displayed a satisfactory stretchability (500%) and self-adhesiveness to various substrates. When used as a strain sensor, the Alg-CNT hydrogel that exhibited a fast response (150 ms) and ultra-durability (over 30 000 cycles) was demonstrated to be capable of monitoring subtle expansion–contraction motions (e.g., human breathing and mouse heart beating) via periodic and repeatable electrical signals. Therefore, this multifunctional hydrogel is highly suitable for monitoring expansion–contraction motions, indicating its potential applications in personal health monitoring.
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
·
2022
·
IF 8.025
Yiwei Zhan,Yacheng Xing,Quan Ji,Xiaomei Ma,Yanzhi Xia
To construct conductive hydrogels with a conductive and a non- or weakly conductive layer for comfortable and safe electronic application, marine biobased anionic polysaccharide sodium alginate (SA) and neutral polyvinyl alcohol (PVA) were employed as the hydrogel matrixes. Tannic acid (TA) was exploited to mediate the demixing of the miscible aqueous solution of SA and PVA in view of the much larger interaction strength of TA with PVA than both of TA with SA and PVA with SA calculated from the density functional theory (−40.21, −29.77 and −21.00 kcal·mol −1 respectively). The finally-fabricated alginate/PVA composite hydrogels not only possess a “Janus” hierarchy but manifest asymmetrical conductivity, i.e., one layer strongly conductive and another weakly conductive. The strongly conductive layer achieves a conductivity of more than 2.95 S·m −1 , facilitating their application in soft electronic areas like human-machine interfaces, smart wearable devices and soft robots. The weakly conductive layer with the conductivity less than 0.60 S·m −1 and the thickness adjustable, constitutes a protective screen for another layer. The Janus hydrogels exhibit good mechanical performance, excellent strain-sensing performance and fatigue-resistant mechanics, conductivity and sensitivity.
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
危险品化学品经营许可证（带存储）