JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 23
·13096-13107
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IF 4.22
Wu Sisi,Guo Juan,Wang Ying,Huang Chao,Hu Yong
A novel magnetic polysaccharide composite hydrogel was successfully constructed by using sodium alginate (SA) and carboxymethyl cellulose (CMC) as the backbone and filled with in situ Fe 3 O 4 nanoparticles, which was then employed for removal of heavy metal ion from aqueous solution. The obtained magnetic SA/CMC composite hydrogel was characterized by Fourier transform infrared spectroscopy, fluorescence microscope, thermogravimetric and vibrating sample magnetometer. Effect of contact time, pH and adsorbent dosage on the adsorption of heavy metal ions by the magnetic SA/CMC hydrogel have also been studied. The results show that the prepared magnetic SA/CMC hydrogel can be effectively utilized in the removal of heavy metal ions from aqueous solution. The maximal adsorption capacity of Mn(II), Pb(II), and Cu(II) as calculated from the Langmuir model were 71.83, 89.49, and 105.93 mg/g, respectively. The adsorption process of the magnetic SA/CMC hydrogel on the heavy metal ions can be attributed to ion exchange and chemical adsorption. What’s more, the magnetic hydrogel exhibited high efficiency after four cycles, which indicating it offers great potential for practical application in the removal of heavy metal ions from aqueous solution.
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CARBOHYDRATE RESEARCH
·
2021
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IF 2.104
Zhijie Geng,Yuxing Ji,Shan Yu,Qunfeng Liu,Zongbao Zhou,Cuiping Guo,Daohuan Lu,Dating Pei
The development of cheap and easily available injectable hydrogel is an urgent problem in the field of biomedical engineering. Herein, we used chitosan quaternary ammonium salt and sodium alginate to prepare a dual crosslinking hydrogel. The hydrogel formed in-situ crosslinking and can be injected continuously. Interestingly, the formed hydrogel possessed a homogeneous 3D network structure and exhibited reasonable mechanical properties. Moreover, the hydrogels had excellent injectability, and the compression strength of the hydrogel (Gel-0.5) was up to 27.65 kPa. Additionally, the hydrogel showed good biocompatibility that evaluated by cytotoxicity. Notably, the hydrogel was nontoxic toward NIH-3T3 cells. In summary, the hydrogel we produced can be used as an ideal biomaterial for further applications in the field of biomedical engineering.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Fei Zhong,Chunlin Chen,JiaoChun Zheng,Linxu Li,Xi Wen
Herein, an efficient boron nitride (BN)-based inorganic flame retardant was introduced into epoxy resin to enhance its fire resistance. Specifically, polyethyleneimine (PEI) was firstly grafted on the BN surface (BN/PEI) through Lewis acid-base interaction, which can greatly improve its water dispersibility. Then, sodium alginate (SA), as a synergistic flame retardant , was combined with BN/PEI (BPS) through electrostatic action to further improve the flame retardant properties of the composite coating . To promote the formation of the carbon layer during the combustion process, zinc ions (Zn 2+ ) were adsorbed on the SA surface through ion exchange. The reinforcement effect of the resulting BPS@Zn hybrids on the epoxy (EP) coatings was explored by fire performance tests. The experimental results confirmed that the BPS@Zn-based EP composite coating exhibited the lowest backside temperature (165.2 ℃), maximum expansion height (23.6 mm) and expansion ratio (18.43) during the combustion process. The TGA-DTG curves proved that the BPS@Zn/EP composite coating had the highest carbon residue (31.7%) compared with other samples. Meanwhile, BPS@Zn/EP exhibited the lowest smoke density rating (41.2%), indicating its best smoke suppression effect. These enhancements can be mainly attributed to the optimal thermal barrier effect of BN, the intrinsic flame retardancy of SA, and the catalytic carbonization effect of metal ions . Further, the carbon residue analysis illustrated that the metal oxides (ZnO) were uniformly distributed in the char layer, which was beneficial to the improvement of its strength and thermal stability.
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Materials Science & Engineering C-Materials for Biological Applications
·
2015
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IF 3.088
Haiping Zhang,Xiaotian Liu,Mingying Yang,Liangjun Zhu
To mimic the natural fibrous structure of the tissue extracellular matrix, a nano-fibrous silk fibroin (SF)/sodium alginate (SA) composite scaffold was fabricated by a thermally-induced phase-separation method. The effects of SF/SA ratio on the structure and the porosity of the composite scaffolds were examined. Scanning electron microscopy and porosity results showed that the 5SF/1SA and 3SF/1SA scaffolds possessed an excellent nano-fibrous structure and a porosity of more than 90%. Fourier transform infrared, X-ray diffraction, and differential scanning calorimetry results indicated the physical interaction between SF and SA molecules and their good compatibility in the 5SF/1SA and 3SF/1SA scaffolds, whereas they showed less compatibility in the 1SF/1SA scaffold. Cell culture results showed that MG-63 cells can attach and grow well on the surface of the SF/SA scaffolds. The nano-fibrous SF/SA scaffold can be potentially used in tissue engineering.
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COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Qu-Hao Feng,Jun Liu,Yan-Bin Shen,Cheng-Fei Cao,Wen-Yu Hu,Teng-Teng Liu,Yu-Ge Fu,Qi-Shi,Jun-Jie Wan,Pei-Yuan Lv,Ye-Jun Wang,Guo-Dong Zhang,Jun Ma,Long-Cheng Tang
Fire warning materials and sensors based on graphene and its derivatives have been developed to mitigate fire risks associated with flammable materials. However, such these nanomaterials face some challenges, e.g., high cost, poor water resistance, single-use fire alarm response, and a black coloration that restricts their applicability in certain scenarios. Herein, we reported a sodium alginate/montmorillonite (SA/MMT)-based hybrid nanocomposite via introducing hyperbranched polysiloxane (HSi) and calcium ions (Ca 2+ ) for efficient fire protection. The optimized nanocomposite demonstrated semi-transparency, good mechanical flexibility and strength (tensile strength of ∼ 65 MPa), and remarkable water resistance. Additionally, it exhibited rapid flame alarm response (response time < 1 s), enhanced flame retardancy (retaining structural integrity after 120 s burning), and reliable cyclic fire alarm capability. When applied as a fireproof coating on flammable wood substrates, the nanocomposite coating also provided both outstanding fire shielding performance and rapid fire warning response. Therefore, this work provides a facile approach for designing and fabricating environmentally friendly fire-warning and flame-retardant composite materials.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Shuai Zhang,Jiantao Zhu,Yan Song,Mei Zhang,Minghai Qu,Fan Yang,Rubing Bai,Huanjie Chi,Jinkun Wang,Junzhi Ma
Silk is widely utilized in high-end fashion apparel, home textiles and other fields due to its excellent comfort and air permeability and moisture permeability. However, inkjet printing on silk typically requires two printings on the front and back side to obtain a good color performance, leading to high process cost and low efficiency. Herein, clean and efficient inkjet printing is achieved using hydroxypropyl methylcellulose/sodium alginate (HPMC/SA) graded to regulate the surface tension of silk. In comparison to traditional inkjet printing process, the process utilizing HPMC/SA graded treatment eliminates the need for secondary inkjet printing, reduces energy consumption, and lowers the per-printing cost by 47 %. Meanwhile, this approach also significantly improved the utilization of reactive dyestuff ink, enhancing the uniformity and clarity on both sides of the printed silk patterns. Therefore, the development of a novel inkjet printing process with graded regulation of fabric surface tension is highly significant for the green and sustainable development of the textile printing and dyeing industry.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Mingtan Wang,Guoqing Xiao,Fei Wang,Chunlin Chen,Junjie Cao,Xiyi Ma,Zhengwei Yang,Rui Zou
Layered double hydroxide (LDH) possesses the effect of interlayer barrier and dilute the concentration of flammable gases due to its unique lamellar structure, which enables it to perform excellent flame retardancy in both gas and condensed phases. In this paper, the abundant hydroxyl and carboxyl groups on the surface of sodium alginate (SA) were utilized to confer excellent hydrophilicity to LDH. Meanwhile, through ion substitution at the carboxyl site of sodium alginate, thus introducing Cu to catalysis charring into LDH@SA for the synthesis of a novel organometallic ion flame retardant (LSCu). Combination of flame retardants with intumescent fireproofing coatings to prepare composite coatings and test them for fire performance. The large panel test indicated that when the LSCu content was 4 %, the backside temperature of the steel panel dropped to 174.7°C, and the char layer surface remained intact, without any holes or cracks. In the furnace test, the composite coating had the highest expansion height (15.6 mm) and expansion rate (13.28 %) with uniform expansion. SEM illustrated that the char layer of the composite coating had a honeycomb structure, which enhanced the adsorption of heat and smoke. In addition, the composite coating retained the highest residual char content (28.1 %), which had to do with the synergistic effect between LDH and Cu complexes. Furthermore, through analyzing the residual char, it was demonstrated that the formation of metal oxides by LSCu at elevated temperatures improved the sustained barrier performance of the char layer.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Shaochen Sun,Yan Zhu,Tianyu Li,Guangqun Wang,Faqu Yin,Fei Li,Farong Tao,Liping Wang,Guang Li
Organic room temperature phosphorescence (RTP) has promising applications in diverse fields, whereas a formidable challenge remains in the development of flexible organic RTP materials, especially environmentally friendly RTP materials. In this work, natural polymer sodium alginate (SA)-based RTP materials have been facilely developed by doping phenylboronic acid (PBA) and its derivatives into SA matrices. 4-carboxyphenylboric acid doped system SA-CPBA exhibits the best RTP performance with an ultralong phosphorescence lifetime of up to 231 ms. Interestingly, SA-CPBA shows excitation-dependent phosphorescence color tunability by water vapor fumigation and heating, and the afterglow color change has good reversibility upon alternating treatment of water vapor fumigation and heating. Amazingly, flexible and transparent RTP films are obtained through adding a certain amount of glycerol (G) into SA-CPBA matrices, and SA-CPBA-G also possesses excellent excitation-dependent phosphorescence color tunability. Furthermore, the flexible SA-CPBA-G film can be conveniently fabricated on a large area. These excellent features enable the prepared SA-based RTP materials to be successfully applied in the fields of flexible display and information encryption. This work provides a guideline for the preparation of environmentally friendly flexible polymer-based color-tunable RTP materials and expands the application range of SA-based materials to the field of flexible displays.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Kui Du,Ye Wu,Hu Xie,Dong-yun Jiang,Cheng-bin Gong,Qian Tang
In this paper, a novel electrochromic material of 1,3,4-oxadiazole-extended viologen derivative with good coplanarity and electron acceptor-electron donor-electron acceptor structure, BPYO-C 6 H 13 , was synthesized, and a polyacrylamide-sodium alginate dual network hydrogel (PAM-SA) with advantages of low cost, environmental protection, good biocompatibility, high optical transmittance (>85 %), good mechanical properties and good ionic conductivity (16.61 mS cm −1 ) was developed as the electrochromic hydrogel matrix for gel-state electrochromic devices based on BPYO-C 6 H 13 (PAM-SA-ECD). BPYO-C 6 H 13 showed good electrochromic properties in both solution-state electrochromic devices and gel-state electrochromic devices, and PAM-SA-ECD had a lower operating voltage (−1.4 V versus −1.7 V), a higher optical contrast (48.4 % versus 33.1 % and 22.1 %) as well as a higher coloration efficiency (348.7 cm 2 /C versus 234.8 and 120.7 cm 2 /C). Compared to PAM-SA gel-state electrochromic devices based on 1,1′-dihexyl-[4,4′-bipyridine]-1,1′-diium, BPYO-C 6 H 13 with 1,3,4-oxadiazole π-extender showed a different colored state (green versus pink) and a higher coloration efficiency (348.7 cm 2 /C versus 275.9 cm 2 /C) due to different conjugated structure. PAM-SA-ECD was applied in smart windows and solar cell-powered displays, suggesting BPYO-C 6 H 13 is promising in energy-saving fields.
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SOFT MATERIALS
·
2024
·
IF 1.6
Chengao Li,Licheng Wang,Liuyun Wei,Mingqing Yuan,Hua Yang
Bilayer hydrogels composed of poly(N-isopropylacrylamide) (PNIPAm) and poly(acrylic acid-co-acrylamide) (P(AAc-co-AAm)) are commonly utilized as anisotropic hydrogels with temperature and pH sensitivity. Nonetheless, PNIPAm is known to possess poor mechanical properties, a slow thermal response, and brittleness, which greatly restricts its application for temperature sensitivity. In order to overcome these limitations, a semi-interpenetrating network (semi-IPN) structure was created by combining PNIPAm with sodium alginate. This structure effectively addressed the issue of PNIPAm’s brittleness, increased its tensile stress, and improved its tensile strain. Notably, a porogen such as sodium carbonate was incorporated to increase the porosity of the thermo-sensitive layer hydrogel, resulting in a faster thermal response rate. The bilayer hydrogel obtained can be used as a bidirectional hydrogel driver with both temperature and pH sensitivity. Mechanical manipulation through temperature changes or pH shifts can cause significant deformation in the hydrogel, making it a promising material for soft actuator applications.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Chengzhe Niu,Mingyu Li,Gaofei Pan,Jingwen Lu,Huitao Yu,Xin Ge,Wei Feng
Integrating photothermal conversion, thermal storage, and electromagnetic interference (EMI) shielding into porous foams meets the demand for multifunctional high-performance composites. In this work, a novel composite was developed by intercalating sodium alginate (SA) between MXene and polyethylene glycol (PEG), followed by the fabrication of PEG/MXene/SA hydrogels through hydrogen bonding or coordination with Ca 2+ , Ce 3+ , and La 3+ ions. Following directional freeze-drying, a porous foam material with a unique sandwich-structured microstructure was obtained. This material demonstrates excellent shape stability. The composite material with 90% PEG content achieves a high latent heat value of up to 165.47 J/g and a relative latent heat efficiency of 97.17%, demonstrating exceptional dynamic temperature regulation capability. Its photothermal conversion efficiency reaches a maximum of 93.35%. Excellent electromagnetic interference (EMI) shielding performance is exhibited by the composite material at PEG loadings up to 50%. Across the 8.2–12.4 GHz frequency band, the SM@P3-H (with 30% PEG content) and SM@P5-H (with 50% PEG content) samples achieve total shielding effectiveness (SET) values exceeding 70 dB, with maximum values reaching 86.47 dB and 76.51 dB. Owing to its outstanding performance, this composite material demonstrates promising potential for application in thermal management and electromagnetic protection of electronic devices.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Shuai Zhou,Xukang Lu,Yuxuan Lin,Xi Lu,Qiuyan Quan,Tinglei Liu,Haien Yang,Moran Wang,Dongzhi Yang
Low-permeability heterogeneous porous media commonly exhibit preferential flow through high-permeability channels and persistent residual-oil trapping in small pores and dead-end regions, limiting effective multiphase transport and residual-oil mobilization. Herein, Ca2+-responsive polyacrylamide/sodium alginate nanogel spheres (PAM/SA NSGs) were developed as an environment-responsive nanogel system for Ca2+-rich porous media. In simulated formation water, SA-Ca2+ coordination increased the apparent elastic modulus from 1.35 MPa for PAM NSGs to 3.45 MPa for PAM/SA NSGs and enabled the composite nanogel spheres to retain their morphology after hydrothermal aging at 60 °C for 14 days. The PAM/SA NSG emulsion dispersion reduced the crude-oil/water interfacial tension from approximately 32 to 12.6 mN·m-1 and produced smaller and more stable emulsified droplets than the PAM control. Microfluidic visualization showed that PAM/SA NSGs generated stronger pressure fluctuations, promoted flow redistribution toward less-swept pores, and increased displacement efficiency from 46.8% after water flooding to 65.3%. Post-displacement observations revealed stripe-like accumulation, surface deposition, and localized bridging without complete pore blockage, interfacial enrichment, and downstream migration of emulsified oil droplets, supporting the coupling of local flow regulation with in situ macroemulsion formation. Core flooding further showed that PAM/SA NSGs maintained stronger flow-resistance regulation after aging and achieved a final oil recovery of 48.7%, representing a 13.5-percentage-point increase over water flooding. These results establish an environment-responsive nanogel strategy in which Ca2+, conventionally regarded as detrimental to chemical flooding, is repurposed as an environmental trigger for nanogel reinforcement to couple mechanical stability, interfacial regulation, and multiphase transport in low-permeability heterogeneous porous media.
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