FOOD CHEMISTRY
·
2024
·
IF 8.5
Qiu Qin Zhang,Jing Tang,Ying Feng Wu,Cheng Yu Qian,Shan Qin,Zi Hang Cai,Hui Wang,Hong Mei Xiao
Crocodile meat is a novel reptile meat source, but its processing method is rare. This study investigated the effect of κ-carrageenan addition and partial substitution of NaCl on the gel properties of crocodile myofibrillar protein (CMP). Result showed that CMP formed gel when temperature above 60 ℃. The water-holding capacity, gel strength, denaturation degree, sulfhydryl content covalent bond and hydrophobic bond of gel in KCl solution were significantly higher than those in CaCl 2 solution ( P < 0.05). K + induced CMP to form a tight network structure with uniform small pores though covalent and hydrophobic bonds, but the gel properties were reduced by κ-carrageenan. In CaCl 2 solution, κ-carrageenan improved the gel structure by filling the protein network through hydrogen bonding. Therefore, it can be concluded that KCl is better than CaCl 2 in the manufacturing of low-sodium crocodile foods. Moreover, κ-carrageenan was only beneficial to gel quality in CaCl 2 solution.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMACROMOLECULES
·
2024
·
IF 5.5
Xiangyi Liu,Lulu Du,Jia Liu,Yueting Shi,Qipeng Liu,Ying Xu,Yingying Xia,Xiaiting Wang,Dan Ding,Xingyi Li,Deqing Lin
With the advantages of less invasiveness and better shape adaptability, in situ-forming hydrogels are desired biomaterials as scaffolds, drug carriers, and so on. Herein, a negatively charged NaCl-responsive ultrashort peptide sequence (EEH) is reported whose electrostatic repulsion can be reduced through the charge-shielding effect. Under physiological conditions, its AIEgen-capped amphiphile TPE-GEEH of low concentration (1 mg/mL) presents NaCl-triggered morphological transformation from micelle to closely packed fiber with enhanced emission, which can be applied to biosense sodium ion (Na+) with high sensitivity and quick response. At a slightly acidic pH, 10 mg/mL TPE-GEEH undergoes sol–gel transition upon addition of NaCl (100 mM) with improved mechanical properties, which should be useful to develop an in situ-forming hydrogel. Overall, our report provides a simple strategy to construct NaCl-responsive assemblies for potential application in biosensors and drug delivery system.
研究领域:
生物材料
·
分子生物学
·
药物递送系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Songping Mo,Bo Xiao,Jiaxuan Li,Lisi Jia,Ying Chen
The use of molten salts as phase change materials (PCMs) for medium temperature thermal energy storage is common. However, these materials are associated with limitations, including leakage during the phase change process , low thermal conductivity , and low moisture resistance for specific types of molten salts such as LiNO 3 /NaCl. This research focuses on the preparation and properties of LiNO 3 /NaCl nanoencapsulated phase change materials (NEPCM). Through detailed analysis using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS), we confirmed the successful encapsulation of the PCM and the presence of spherical nanocapsules . Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) results indicated that the encapsulation process did not alter the crystal structure of the PCM. Differential scanning calorimetry (DSC) revealed that the NEPCM exhibited a phase change temperature of 222.4 °C and a latent heat of fusion of 228.7 kJ/kg. Furthermore, the NEPCM demonstrated a high thermal reliability of 99.7 % after fifty thermal cycles, indicating excellent cyclic stability. Moisture resistance experiments were carried out by subjecting both the PCM and NEPCM to a humid environment . The results showed that encapsulation effectively reduced water absorption in the PCM. Thermal conductivity measurements of the nanocapsule suspension were conducted using the Hot Disk method, which indicated an approximate 16.3 % increase in thermal conductivity compared to the base fluid. Additionally, the addition of 2 % MgO to the nanocapsule suspension further enhanced the thermal conductivity by 31.7 %, while maintaining the dispersion stability of the suspension. These enhancements in properties are advantageous for the practical application of the NEPCM as a PCM for thermal energy storage. The overall results demonstrate that nanoencapsulation offers significant improvements in the thermal reliability, moisture resistance, and thermal conductivity of molten salt PCMs, thus broadening their potential applications in medium temperature thermal energy storage systems .
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Dongqing Liu,Zexian Zhu,Yiping Zhao,Yingbo Chen,Yankun Tan,Yufeng Zhang
A co-polymer (SPAA6) of 5-sulfoanthranilic acid (5SAA) and ε -caprolactam was used to prepare membrane through nonsolvent induced phase separation (NIPS) method. The micro-structure of membrane was adjusted by small molecules to improve mechanic strength and performance, involving 7 commercial ionic surfactant and a self-synthesized one, S20. S20 showed the best compatibility with SPAA6, which converted spherical phase into network of strip-like units in micro-structure of membrane. Meanwhile, average pore size of the membrane was narrowed from 4.271 nm to 3.391 nm, tested by BET method. Tensile strength of membrane was improved from 2.5 MPa to 2.9 MPa. Therefore, anionic dyes rejection and membrane stability were both improved. It actually demonstrated that molecular weight distribution of SPAA6 was crucial for micro-structure construction of membrane since S20 was the SPAA6 of low molecular weight . In blend solution filtration test, membrane MS2 (1:2 for S20:SPAA6) displayed 98.22% rejection to Congo Red (CR) acid and 96.18% NaCl permeation under 1 bar. It showed 80.18% rejection to chrome blue K (ABK) and 96.28% NaCl permeation. Both water permeance were higher than 3.5 L·m −2 ·h −1 ·bar. Membrane MS2 showed the potential of fractionation of dye and NaCl, which was promising in textile waste water treatment .
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Wenwen Hou,Nannan Sheng,Xiaohui Zhang,Zhaohui Luan,Pengfei Qi,Min Lin,Yeqiang Tan,Yanzhi Xia,Yanhui Li,Kunyan Sui
High performance strain sensors have recently attracted immense interest because of their potential applications in wearable devices. However, it remains a challenge in achieving critical feature combinations (e.g., high sensitivity, high mechanical properties, and easy fabrication) for soft wearable sensors. Herein, we fabricated new ionic strain sensors based on agar/NaCl/polyacrylamide double network hydrogels. By taking the advantage of the electric neutrality of agar, we can easily combine the sensitivity and mechanical properties into same ionic hydrogel by tuning the chemical compositions of the hydrogels. Moreover, thanks to the thermoreversible sol-gel properties of agar, the pregel can be injected into various complex shapes. The ionic hydrogels exhibit high strain sensitivity and many superior mechanical properties. The ionic sensor can monitor human motions such as joint motions, slight wrist pulse and subtle muscle movements of throat. Thus, this study demonstrates that the ionic hydrogels have potential applications as high performance strain sensors.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Crystals
·
2020
·Vol. 10
·期 6
·444
·
IF 2.404
Jing Zhao,Hongjie Luo,Xiao Huang
Salt damage is one of the most common and serious diseases in silicate cultural relics. In this research, low-field nuclear magnetic resonance (low-field NMR), automatic high-speed X-ray microtomography imaging, polarized light microscopy, and ultra-depth of field microscopy were applied to investigate the migration, distribution, and crystallization of NaCl and Na2SO4on the surface of hydrophilic media, glass capillaries, and porous SiO2materials, respectively. The results show that these two salts have different crystal growth behaviors in the same medium. NaCl grows in a granular form on the surface of hydrophilic medium and generally crystallizes outside the glass capillary tube, whereas Na2SO4grows in a circular ring and always crystallizes inside, and some bubbles can be seen clearly in the hydrophilic medium. Meanwhile, different from NaCl, which is mainly concentrated on the upper surface of SiO2sample, the migration of the Na2SO4solution is distributed in the whole sample, and crystals accumulate on the interior of the sample surface. The different crystallization behaviors of salts are speculated to be related to damage conditions such as efflorescence and mural blisters in silicate cultural relics.Keywords:salt damage;penetration depth;migration;distribution;crystallization
研究领域:
文物保护
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2018
·
IF 0
Lu Shen,Yong Li,Wenjie Zhao,Lijing Miao,Weiping Xie,Huanming Lu,Kui Wang
In order to hold the excellent corrosion resistance of zinc-rich epoxy coatings with reduced zinc content, five types of graphene modified zinc-rich epoxy coatings (G-ZRCs) were prepared. The effect of zinc content on the corrosion protection behaviors of G-ZRCs was investigated using electrochemical impedance spectroscopy (EIS). Open circuit potential (OCP) was also utilized to deepen the understanding of the anticorrosion mechanism of the as-prepared composite coatings. The results confirmed that addition of 0.3 wt % graphene could make the coating with 40 wt % (G-40ZRC) and 55 wt % zinc (G-55ZRC) provide cathodic protection for a short period of time. The EIS and OCP results showed a dominant physical barrier protection mechanism for the coatings without zinc (G-ZRC), while there was a mixed mechanism for G-40ZRC and G-55ZRC and a dominant cathodic protection mechanism for the coatings with 70 and 85 wt % zinc (G-70ZRC and G-85ZRC). Furthermore, the graphene modified zinc-rich coatings and corresponding corrosion products immersed in a 3.5% NaCl solution for 100 days were also characterized, which could further reveal anticorrosion mechanisms of the graphene modified zinc-rich coatings and the passivation effect of polyaniline (PANI).
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
RSC Advances
·
2015
·Vol. 5
·期 76
·62235-62240
·
IF 3.84
Handong Jiao,Junxiang Wang,Long Zhang,Ke Zhang,Shuqiang Jiao
The electrochemical behavior of titanium ions at a liquid tin cathode has been investigated by cyclic voltammetry and square wave voltammetry in a NaCl–KCl melt at 1023 K. The results show that the deposition potentials of alkali metals and titanium at liquid tin are more positive than those at a solid tungsten cathode. Meanwhile, the results prove that titanium(III) ions can be reduced at liquid tin with a one-step reduction, Ti3+ + 3e = Ti, which is a quasi-reversible process with diffusion-controlled mass transfer. The diffusion coefficient of titanium(III) ions is 1.05 × 10−5 cm2 s−1. Additionally, galvanostatic electrolysis has been carried out to clarify the effect of the current density on the cathodic products. The result demonstrates that a greater depth of titanium will be diffused into the liquid tin cathode during electrolysis with a lower current density.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Wentong Yang,Yixiong Ji,Wangxian Chen,Yining Pan,Zifei Chen,Shaoyang Wu,Salvy P. Russo,Yang Xu,Trevor A. Smith,Anthony Chesman,Paul Mulvaney,Fangyang Liu
Sodium (Na) doping is a well-established technique employed in chalcopyrite and kesterite solar cells. While various improvements can be achieved in crystalline quality, electrical properties, or defect passivation of the absorber materials by incorporating Na, a comprehensive demonstration of the desired Na distribution in CZTSSe is still lacking. Herein, a straightforward Na doping approach by dissolving NaCl into the CZTS precursor solution is proposed. It is demonstrated that a favorable Na ion distribution should comprise a precisely controlled Na + concentration at the front surface and an enhanced distribution within the bottom region of the absorber layer. These findings demonstrated that Na ions play several positive roles within the device, leading to an overall power conversion efficiency of 12.51%.
研究领域:
材料科学
·
可再生能源
·
光伏技术
✓ 已验证
DOI
高影响因子
FIRE TECHNOLOGY
·
2025
·
IF 2.4
Ji Jingwei,Li Wenju,Zhang Hongxiang,Zheng Yuechuan,Zhang Tengpu,Du Jinghui,Zhang Hong,Shi Bangkai
At present, research on dry powder for magnesium fire extinguishing is mostly focused on extinguishing surface fires, with limited research on internal smoldering. Moreover, fire extinguishing performance tests of dry powder are primarily conducted on horizontal surfaces, while inclined and vertical combustion poses greater hazards and extinguishing challenges. To address this issue, a new dry powder extinguishing agent (NaCl/PMHS@LMG) with a dual phase-change temperature range was prepared in this paper to extinguish surface open flames and internal smoldering generated by magnesium fires on non-horizontal surfaces. The extinguishing agent was made using sodium chloride (NaCl) and polymethylhydrosiloxane (PMHS)-modified low melting point glass powder (LMG). The results of material testing showed that the NaCl/PMHS@LMG exhibited a dual phase transition, featuring a lower initial phase transition temperature, greater thermal stability, and enhanced heat absorption. At the same time, the modification of PMHS converted LMG from hydrophilic to hydrophobic, enhancing the dry powder’s overall moisture resistance. The results of magnesium fire extinguishing experiments show that NaCl/PMHS@LMG can effectively extinguish magnesium fires in both stacked and vertical forms. Compared with NaCl, the average extinguishing time and consumption of NaCl/PMHS@LMG in stacked fires were reduced by 49% and 52.7%, respectively, and the temperature reduction rate of stacked surfaces during extinguishing was approximately 4 times faster than with NaCl. Additionally, NaCl/PMHS@LMG formed a three-layer air-isolated cover on the stack surface after extinguishing, with an “auto-filling” function that effectively extinguished internal smoldering in magnesium chip stacks. Subsequently, the extinguishing mechanism of the dry powder was further explored.
研究领域:
材料科学
·
消防工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Zhongyang Wang,Siheng Zhao,Muhammad Adnan Akram,Kuo Chen,Shengchao Zhao,Lihua Zhao,Zhiyu Liu,Q. Jason Niu
Reverse osmosis (RO) is the preferred technology for seawater and brackish water desalination. The ongoing pursuit of scientific research and industrial innovation aims to develop high-performance RO membranes. An effective approach to enhancing the performance of composite RO membranes is the use of interlayers. To simplify the construction process of the interlayer and improve its regulation effect on the interfacial polymerization process, we propose a construction scheme for an in-situ dynamic covalent interlayer. By adding glutaraldehyde (GA) to the aqueous solution containing cyclobutane tetraformylhydrazide (CBTH), we successfully synthesized a crosslinked acylhydrazone interlayer onto a polysulfone (PSF) substrate during the aqueous coating stage to optimize the interfacial polymerization process. In the early stage of interfacial polymerization, the crosslinked acylhydrazone interlayer can bind the amine monomer, preventing the initial polyamide layer from becoming too dense and creating a self-regulating mechanism. In the later stages, it continuously supplies amine monomers to the reaction zone, compensating for defects in the polyamide layer and establishing a self-perfection mechanism. The in-situ simultaneous dynamic covalent interlayer increased the permeation flux of the CBTH-TMC membrane by 3 times (4.0 L m −2 h −1 ⋅bar −1 ) with NaCl rejection of 99.14 % by effectively controlling the membrane formation process. This approach demonstrates advantages in simplicity and operability, successfully overcoming the "trade-off" limitation of original polyamide-hydrazide membranes.
研究领域:
材料科学
·
化学工程
·
水处理技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2015
·Vol. 162
·期 4
·C128
·
IF 3.266
Shusen Peng,Jin Han,Wenjie Zhao,Zhixiang Zeng,Jianmin Chen,Xuedong Wu
Experimental results have revealed that mercapto functional sol-gel (MFS) coating can provide good protection for copper. However, information on the degradation behavior of MFS coating still limits in the literature and therefore needs further investigation. In this report, the protection and degradation behavior of MFS coating on copper in NaCl solution was studied by various methods. Electrochemical methods and salt spray test show that MFS coating can provide good protection for copper and its performance depends on coating thickness. XPS results show MFS coating degradation in NaCl solution can be ascribed to mercapto groups oxidation and Si-O-Si bonds hydrolysis.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）