ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Chenglong Zhu,Quan Wang,Jiahao Li,Yinbo Zhu,Rongguang Che,Yidi Li,Jingjiang Wei,Siqian Lu,Hao Xie,Hao Wang,Weimin Wang,Hang Ping,Kun Wang,Zhengyi Fu
As a laminated composite, the robust interface between aragonite platelets and organic matrices imparts nacre with superior mechanical properties. Additionally, the prestressing strategy, which involves compressing hydroxyapatite platelets through the contraction of collagen molecules, is employed to enhance bone strength. Inspired by these natural materials, layered brushite/sodium alginate composite bulks (BSPE) are fabricated with high performance through synergistic interfacial interactions and prestress processing. The bulks are prepared by stacking and hot-pressing BSPE films, which are obtained via unidirectional freeze-casting and pressing. To strengthen the interfacial interactions, brushite platelets are surface-modified with polyvinyl alcohol molecules, forming strong hydrogen bonds with sodium alginate chains. Furthermore, megapascal-level contractile prestresses are generated by soaking surface-modified films in ethanol, inducing the shrinkage of sodium alginate chains through dehydration. Consequently, the specific strength and specific toughness of the composites reach 137.5 MPa/(Mg m −3 ) and 3.8 MPa m 1/2 /(Mg m −3 ), respectively, representing 2.0 and 2.5 times the values of natural nacre. Moreover, the energy absorption capacity of the BSPE bulk is approximately 2.5 times higher than that of the control bulk. The synergistic approach provides new insights for designing and manufacturing high-performance composites under mild conditions.
研究领域:
材料科学
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复合材料
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仿生材料
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力学性能
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Changkun Liu,Ye Peng,Xinzhen Zhao
Improving the desalination performance of the solar evaporator is the core of promoting the application of sustainable solar desalination technology. In this study, a flower-inspired bionic evaporator was successfully prepared, the bundled of black hollow sodium alginate hydrogel tubes were fixed vertically to form a flower structure with branched hydrogel tubes at the top. The prepared black flower hydrogel evaporator showed the excellent evaporation rate of 3.2 kg m −2 h −1 , and the salt crystallization phenomenon during solar desalination was effectively suppressed. Three-dimensional flower configuration of the hydrogel tube with the appropriate length could increase the effective evaporation area and accelerate the evaporation process . Moreover, the hollow hydrogel network structure exhibited the stable water supply capacity to promote salt ions exchange at the evaporation interface, thereby inhibiting salt crystallization phenomenon. This study proved that constructing a 3D-shaped evaporator is an effective way to subversively improve the solar desalination performance for application.
研究领域:
材料科学
·
环境科学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOFT MATERIALS
·
2019
·
IF 0.973
Minying Wang,Le Luo,Lihua Fu,Hua Yang
Polyacrylamide/sodium alginate (PAM/SA) hydrogel was prepared from sodium alginate (SA) and acrylamide (AM) by covalently cross-linking. Temporary shape double network PAM/SA hydrogels were obtained by ionic cross-linking formed by complexation of SA and six metal cations (Fe3+, Cu2+, Ag+, Ca2+, Ni2+, and Co2+), among the PAM/SA—Fe3+ hydrogels has the best shape fixity ratio (83%). When the hydrogel is placed in different recovery liquids (sodium citrate, EDTA, sulfuric acid, and potassium carbonate), the shape recovery ratio (98.9%) is the best in sodium citrate solution, and the recovery time (182 s) of the hydrogel is the shortest. In general, Fe3+, Cu2+, and Ag+ are suitable for the construction of ionic-shape memory hydrogels. The PAM/SA hydrogels also exhibited excellent adjustable mechanical properties by changing metal cations and soaking time. The strategy could broaden the construction of ion-responsive shape-memory hydrogels.
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
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2016
·
IF 2.267
Qianqian Huang,Shunli Liu,Kewen Li,Imtiaz Hussain,Fang Yao,Guodong Fu
A facile method for the preparation of sodium alginate (SA)/carboxyl-functionalized graphene (G-COOH) composite hydrogel was developed. Based on the coordination ability of lanthanide ions to the carboxyl groups, a series of hydrogel derived from different ratios of SA and G-COOH was fabricated by neodymium (Nd 3+ ) ions coordination. A relatively uniform layered structure was recorded by SEM at the interior of SA/G-COOH hydrogel. Several parameters such as water content, swelling ratio (SR), tensile test and solvent resistance were also investigated. The SA/G-COOH composite hydrogel showed excellent mechanical strength , and the tensile strength of SA/G-COOH composite hydrogel reaches 53.72 MPa at high water content. Due to the coordination ability of Nd 3+ ions, the hydrogel also exhibited an excellent solvent resistance and stability.
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
Polymers
·
2020
·Vol. 12
·期 9
·1926
·
IF 3.426
Yanyi Wen,Bing Yu,Zhongjie Zhu,Zhuoran Yang,Wei Shao
In the present study, sponges with the antibiotic tetracycline hydrochloride (TCH) loaded into alginate incorporated with gelatin (G/SA) were fabricated. The G/SA sponges were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric (TG) analysis. G/SA sponges show a three-dimensional network structure with high porosity. An excellent swelling behavior and a controlled TCH release performance are observed from G/SA sponges. Moreover, they exhibit good antibacterial activity against both Gram-positive and Gram-negative bacteria.Keywords:alginate;gelatin;porosity;antibacterial
研究领域:
生物材料
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医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Yannan Song,Shuo Li,Huifang Chen,Xinyi Han,Gregory J. Duns,Wubliker Dessie,Wufei Tang,Yimin Tan,Zuodong Qin,Xiaofang Luo
There are several factors that contribute to the mortality of people who suffer from unmanageable bleeding. Therefore, the development of rapid hemostatic materials is necessary. Herein, novel rapid hemostatic composite sponges were developed by incorporation of kaolin (K) into carboxymethyl chitosan (CMCS)/sodium alginate (SA) via a combination of methods that includes ionic crosslinking, polyelectrolyte action, and freeze-drying. The CMCS/SA-K composite sponges were cross-linked with calcium ions provided by a sustained-release system consisting of D-gluconolactone (GDL) and Ca-EDTA, and the hemostatic ability of the sponges was enhanced by loading the inorganic hemostatic agent-kaolin (K). It was demonstrated that the CMCS/SA-K composite sponges had a good porous structure and water absorption properties, excellent mechanical properties, outstanding biodegradability , and biocompatibility. Simultaneously, they exhibited rapid hemostatic properties, both in vitro and in vivo . Significantly, the hemostatic time of the CMCS/SA-K 60 sponge was improved by 82.76 %, 191.82 %, and 153.05 %, compared with those of commercially available gelatin sponges in the rat tail amputation, femoral vein, and liver injury hemorrhage models respectively, indicating that its hemostatic ability was superior to that of commercially available hemostatic materials. Therefore, CMCS/SA-K composite sponges show great promise for rapid hemostasis .
研究领域:
材料科学
·
生物材料
·
止血
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 29
·6952-6960
·
IF 7
Wenjing Zuo,Qi Chen,Zhen Xie,Sania Habib,Yidan Jing,Xiaomin Zhang,Ningya Yu,Shengpei Su,Jin Zhu
Photochromic hydrogels have great potential for inkless printing, smart display devices, anti-counterfeiting and encryption. However, the short information storage time limits their large-scale application. In this study, a sodium alginate/polyacrylamide photochromic hydrogel with ammonium molybdate as the color change factor was prepared. The addition of sodium alginate was beneficial to the improvement of the fracture stress and elongation at break. In particular, when the content of sodium alginate was 3%, the fracture stress increased from 20 kPa without sodium alginate to 62 kPa. Different photochromic effects and information storage times were achieved by regulating the calcium ion and ammonium molybdate concentration. And the hydrogel with an ammonium molybdate immersion concentration of 6% and calcium chloride immersion concentration of 10% can store information for up to 15 h. At the same time, the hydrogels were able to maintain their photochromic properties over five cycles of “information writing – erasure” and achieved “hunnu” encryption. Therefore, the hydrogel shows excellent information controllable erasure properties and encryption functions, indicating its broad application prospects.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Gangrong Wang,Zhuo Chen,Xin Jing,Xijian Yi,Jian Zou,Peiyong Feng,Hailiang Zhang,Yuejun Liu
Although conductive hydrogels have been widely developed currently, their low sensitivity and poor stability severely limited their practical application in flexible wearable devices. Herein, a green “stencil” anchoring strategy was proposed in this study to engineer an ultra-stable and supersensitive hydrogel by virtue of polydopamine decorating sodium alginate molecular chains as “stencil” to anchor polyaniline as conductive component. The dispersion of polyaniline was significantly improved by the sodium alginate “stencil” in the conductive hydrogel. The developed conductive hydrogel exhibited outstanding properties that outperformed most conventional ones, including extraordinary sensitivity with a gauge factor of 38.2 and excellent stability with negligible shifting upon long-term cyclic stretching. Moreover, the conductive hydrogel displayed great self-adhesion and reliable self-healing performance endowed by its abundant catechol groups, hydrogen bondings and π-π stackings, respectively. Furthermore, the prepared hydrogel was also assembled as flexible strain and self-powered sensors, which displayed excellent sensing performance, indicating great potential in human-machine interactions, information transmission and road transportation.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Nan Wang,Jie Tian,Linlin Wang,Chen Song,Chengrong Wen,Yinghuan Fu,Shuang Song
Developing sodium alginate (SA)/chito-oligosaccharide (COS) beads with antibacterial properties is highly appealing for food industrial applications. Herein, in this paper, the different viscosity-average molecular weight of SA/COS polyelectrolyte (SCP) gel beads were prepared by adding a low concentration of calcium ions (Ca 2+ ) as crosslinker and their size, mechanical property, microscopic morphology, elemental composition, and thermal stability of the gel beads were characterized. Furthermore, the morphological changes of gel beads in in vitro simulated digestion were investigated. A time-dependent co-culture assay was used to explore the antibacterial effect of gel beads on Staphylococcus aureus and Escherichia coli . The results showed that as the viscosity-average molecular weight (M v ) of SA decreased, the bursting strength faded, the thermal stability decreased, and the swelling index increased. Similarly, increasing the Ca 2+ content could also regulate the characteristics of the gel beads, such as diminishing size, increasing the bursting strength, making the surfaces rough, and producing the network structure in the cross-section. In addition, Ca 2+ competes with COS in cross-linking with the carboxyl groups of SA, which leads to a decrease in the content of N element on the surfaces of the gel beads and to a weakening of the antibacterial effect. After the addition of COS, the gel beads obtained antimicrobial effects and a denser cross-sectional structure. The present study could provide a theoretical basis for the design and development of novel gel foods in the food industry.
研究领域:
食品科学
·
材料科学
·
生物技术
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Lingxiao He,Ning Ma,Zhengyun Liang,Sidan Zhao,Jiaming Yan,Hanchen Lin,Chaoqun You,Lingchao Cai,Fei Wang
Matrine is a type of alkaloid found in plants, exhibiting a wide range of biological and pharmacological activities. The process of separating and purifying matrine poses challenges due to its low concentration and frequent presence in mixtures during raw extraction. This work aims at synthesizing suitable adsorbents for efficient separation and purification of matrine from plant materials. The sulfonated cellulose nanocrystals/sodium alginate beads (SCNCs/SA) were synthesized by the ionic gelation method, characterized and investigated for the adsorption of matrine from water. The equilibrium adsorption capacity of SCNCs/SA beads for matrine at 298 K was approximately 55.66 mg/g. The adsorption enthalpy, entropy, and free energy of matrine on the SCNCs/SA beads were evaluated, indicating that the adsorption process was spontaneous, exothermic, and primarily driven by physisorption. 95 % of the adsorption equilibrium could be achieved within 60 min, and approximately 20 bed volumes of an 80 % (v/v) ethanol aqueous solution for effective recovery. The adsorption isotherms are analyzed using both Langmuir and Freundlich models, the kinetic of adsorption using the pseudo-first-order and pseudo-second-order models, and the breakthrough curves using four breakthrough models. These results suggested that the rapid adsorption and effortless regeneration render SCNCs/SA beads as promising adsorbents for the efficient adsorption and separation of matrine from plants.
研究领域:
材料科学
·
药学
·
植物化学
✓ 已验证
产品关联
DOI
高影响因子
Food Chemistry-X
·
2024
·
IF 6.5
Qian Zhang,Yu-Qiao Wang,Lin Li,Hao-Lin Song,Hai-Tao Wu,Bei-Wei Zhu
Salidroside (Sal), the main bioactive substance in Rhodiola rosea , is a promising functional food component with a wide range of pharmacological effects, but its biological activity is challenging to sustain due to its short half-life, low oral bioavailability, and susceptibility to environmental factors. The aim of this study was to investigate the effect of sodium alginate (SA) concentration on the construction of W/O/W emulsion in the protection of Sal. With the escalation of SA concentrations, the range of droplet size distribution was smaller and the droplets were more uniform. When the concentration of SA was 2 %, the average droplet size reached 9.1 ± 0.1 μm, and the encapsulation efficiency of Sal was 77.8 ± 1.8 %. Moreover, the double emulsion with 2 % SA was the most stable for 28 days at 4 °C since the oil droplets were embedded in the network structure of SA.
研究领域:
药学
·
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Sishi Xu,Wencheng Liang,Guanzhe Xu,Chengjie Huang,Junyong Zhang,Meidong Lang
Optimal modification and gelation strategies of polysaccharide hydrogels have been developed for biomedical applications. Herein, a kind of fast crosslinking alginate hydrogel with superior gel properties was prepared for the first time combining dual crosslinking mechanisms. Firstly, sodium alginate (SA) was modified by vinyl ether side chains through one-step amidation reaction with aminopropyl vinyl ether (APVE) catalyzed by EDC/NHS. Just within 10 s, the grafting product of SA-VE was demonstrated to form hydrogen bonded hydrogel SA-VE/H 2 O spontaneously. Based on this mechanism, a dual crosslinking alginate hydrogel SA-VE/DTT was fabricated through introducing thiol-ene click chemistry reaction with dithiothreitol (DTT) under UV exposure. According to rheological results, the photo-crosslinking process was completed within 5–9 min. Combining hydrogen bonding and thiol-ene click chemistry, the dual crosslinking mechanism was proved to bring the hydrogel system not only fast gelation but also superior storage modulus up to 13373 Pa and excellent stability of over 1 month. All the hydrogels exhibited non-cytotoxicity towards NIH-3T3 fibroblasts. Furthermore, the 26 s rapid hemostasis behavior of SA-VE exhibited in rat tail hemostasis experiment reveals its potential application in wound dressing materials.
研究领域:
生物材料学
·
组织工程
·
再生医学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）