LANGMUIR
·
2024
·
IF 3.7
Jiani Xu,Zhongyi He,Liping Xiong,Yinglei Wu,Lei Guo,Lili Li,Renhui Zhang
A high yield of environmentally friendly N,S-codoped (N,S-CDs) and N-doping carbon points (N-CDs) carbon dots was achieved through a biochemical oxidation reaction at room temperature in this study. Acetaldehyde, sodium hydroxide, benzotriazole (BTA), and 2-mercaptobenzimidazole (MB) with a similar structure were used as raw materials. The microstructure and properties of the corrosion inhibitor for Q235 steel were evaluated by various experiments. The results demonstrated enhanced corrosion inhibition rates of the N,S-CDs compared to the N-CDs using electrochemical tests (93.83% vs 77.65%) and weight loss experiments (96.35% vs 91.65%) at 50 mg/L, respectively, compared to the blank material, indicating that N,S codoping can significantly improve the corrosion inhibition effect of carbon dots. The significant improvements were attributed to the formation of dense adsorption films and the hydrophobic properties of N and S-CDs nanoparticles on the steel surface, leading to an effective barrier against corrosion. The findings from this study provide important experimental data for potential industrial applications and hold important practical value in the field of pickling corrosion inhibitors.
研究领域:
材料科学
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腐蚀与防护
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工业应用
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产品关联
DOI
PubMed
高影响因子
Polymers
·
2020
·Vol. 12
·期 9
·2031
·
IF 3.426
Nidhin Divakaran,Manoj B. Kale,Duraisami Dhamodharan,Suhail Mubarak,Lixin Wu,Jianlei Wang
Montmorillonite (MMT) displays excellent cohesion with an unsaturated polyester (UP) matrix to generate a material which exhibits an extensive range of commercial applications. The organic modification of MMT using polyhedral oligomeric silsesquioxanes (POSS) and the effect of POSS-MMT on the thermal, mechanical, and electrical properties of UP are reported here. Transmission electron microscopy (TEM) images were used to characterize the modification of MMT using POSS. Modified MMT (POSS-MMT) was incorporated, at different wt.% (0.5, 1, 3, 5), into UP via in-situ polymerization. The presence of POSS-MMT enhanced the characteristic properties of UP as a consequence of good dispersion in the polymer matrix. Scanning electron microscopy (SEM) images support effective POSS-MMT dispersion leading to tensile strength enhancement of a UP/POSS-MMT nanocomposite (3 wt.% POSS-MMT) by 54.7% as compared to that for unmodified UP. TGA displays a 35 °C improvement of thermal stability (10% mass loss) at 5% POSS-MMT incorporation, while the electrical conductivity is improved by 108S/m (3 wt.% POSS-MMT) in comparison to that for unmodified UP. The conventional obstacle of UP associated with shrinkage weight loss during curing seems to be moderated with POSS-MMT incorporation (3%) resulting in a 27.8% reduction in shrinkage weight loss. These fabricated nanocomposites expand the versatility of UP as a high-performance material owing to enhancements of properties.Keywords:montmorillonite;aminopropyl isobutyl POSS;unsaturated polyester;mechanical properties;electrical conductivity;shrinkage weight loss
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
PubMed
高影响因子
JOURNAL OF FOOD SAFETY
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2020
·Vol. 40
·期 3
·e12791
·
IF 1.133
Jia-li Xu,Hong Gao,Hai-bo Zhang,Shu-feng Yao,Dan Wang,Shi-bin Shang
A water-soluble rosin polymer (RP) was prepared via polymerization of rosin and maleic anhydride. The structure of the RP was characterized via Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, and gel permeation chromatography. The RP was used as a film-forming agent on strawberries to improve their postharvest quality at room temperature. The effectiveness of this treatment was evaluated based on the impact of the RP coating on the following parameters: weight loss, total soluble solids (TSS), firmness, respiration rate, malondialdehyde (MDA) content, anthocyanin content, and total phenolic content (TPC). The samples that coated with the RP exhibited delayed respiration and loss of firmness compared with the control. Correspondingly, the samples coated with the RP had lower weight loss (14.78%), MDA content (8.13 × 10 −2 μmol/g), anthocyanin content (37.86 mg/100 g), TPC (3.41 × 10 −4 mg/100 g), and higher TSS (8.09%). The results indicated that the RP preservative could effectively maintain the freshness of fruits.
研究领域:
食品科学
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材料科学
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农业工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SUPERCRITICAL FLUIDS
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2021
·
IF 4.577
Yuan-Bin Zheng,Jian-Xin Jia,Wei Shi,Jia-Jie Long
With increasing awareness in environmental protection from the world, traditional pretreatment methods for textiles, which entail high costs and cause severe pollutions, can no longer meet the requirements of green and sustainable development in textile industry. Therefore, to explore a new pretreatment method to overcome those drawbacks is of great importance . In this work, green and environmentally friendly method was developed in supercritical carbon dioxide fluid to pretreat cotton gray fabric for removing various impurities with one step and one bath, by utilizing an 18-crown-6 phase transfer system. Various process parameters, such as the pH value of buffer solution, the dosage of phase transfer catalyst , hydrogen peroxide, buffer solution, and the system temperature, pressure, treatment duration, were investigated and optimized by employing the weight loss percent and the capillary rise height as assessment index. The obtained results show that the developed alkali-hydrogen peroxide one-step method involving the 18-crown-6 phase transfer system in supercritical carbon dioxide exhibits a good feasibility for the removal of various sizing agents and other impurities from cotton fabric, and a satisfactory pretreatment performance and efficiency were achieved. The pretreatment parameters showed an important and various effects on the pretreatment efficiency of cotton substrate during a phase transfer oxidative one-step process in supercritical carbon dioxide. Moreover, a phase transfer oxidative one-step process was also recommended for cotton gray fabric pretreatment in supercritical carbon dioxide, by achieving a fabric weight loss at 6.21% and a satisfactory capillary rise height at 8.0 cm under an optimized condition. Additionally, an oxidative one-step pretreatment mechanism by employing 18-crown-6 to phase transfer reactive species for cotton gray fabric in SCF-CO 2 was further supposed.
研究领域:
纺织工程
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环境科学
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化学工程
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产品关联
DOI
高影响因子
SOFT MATERIALS
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2024
·
IF 1.6
Jing Wang,Shaopeng Lv,Xinchen Gui,Yadong Yu
Developing innovative packaging films is of great significance for extending the shelf-life of perishable fruit. In this study, we successfully synthesized antibacterial composites by incorporating Fe into reduced graphene oxides (rGO) and MoS2. The resulting rGO-MoS2-Fe2O3 composites demonstrated effective inhibition against E. coli and S. aureus. After investigating the antibacterial mechanism of rGO-MoS2-Fe2O3 composites, we utilized carboxymethyl cellulose (CMC) as a film substrate to create CMC films infused with rGO-MoS2-Fe2O3 composites. The incorporation of rGO-MoS2-Fe2O3 composites decreased the light transmittance and hygroscopicity of CMC films, while greatly enhancing the mechanical properties of CMC films. To evaluate the practical applications of these rGO-MoS2-Fe2O3-based CMC films, we conducted a strawberry preservation experiment, which revealed that CMC films supplemented with 5 wt% rGO-MoS2-Fe2O3 exhibited exceptional performance in preventing weight loss and maintaining total titratable acidity levels in strawberries. These findings highlighted the promising potential of rGO-MoS2-Fe2O3-based CMC films for fruit preservation applications.
研究领域:
材料科学
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食品科学
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生物技术
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农业工程
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2022
·
IF 9.231
Hao Huang,Fatima-ezzahra Ettoumi,Li Li,Yanqun Xu,Zisheng Luo
Economic value of the global potato harvest is impacted by sprouting during storage. We examined how sprouting might be reduced or eliminated using citral , a naturally occurring component in citrus fruit peel. The current study integrated both loading and sustained release of citral using emulsification-based interfacial synthesis of hollow MIL-88A. The structural properties and compositions of MIL-88A and hollow MIL-88A were confirmed using SEM, EDS, and XRD. BET analysis showed a surface area of 30.36 m 2 g −1 , pore volume of 0.21 cm 3 g −1 , and an average pore radius of 13.56 nm for hollow MIL-88A. Citral was successfully loaded into 10 g of MIL-88A and hollow MIL-88A, with a total citral load of 0.21 cm 3 and 1.82 cm 3 , respectively. The citral-loaded hollow MIL-88A induced a sustained release of citral, which effectively inhibited the sprouting, leading to higher starch content by 41%, lower weight losses, reducing sugar content, α-Amylase, β-amylase, and starch phosphorylase activities by 75%, 55%, 34%, 31%, and 43%, respectively. The citral-loaded hollow MIL-88A might inhibit sprouting by suppressing gibberellin and indole-3-acetic acid while maintaining abscisic acid.
研究领域:
农业科学
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食品科学
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材料科学
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植物生理学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Yue Yuan,Huafeng Tian,Ruru Huang,Hongtao Liu,Hua Wu,Gaiping Guo,Junsong Xiao
To extend the shelf life of sweet cherries ( Prunus avium L . ) and considering the environmental problems caused by traditional packaging materials, novel Zein/Gelatin-proanthocyanidins-zinc oxide nanoparticles (ZE/GE-PC-ZnO) and Zein/Gelatin-gallic acid-zinc oxide nanoparticles (ZE/GE-GA-ZnO) protein-based composite nanofiber films were prepared by electrospinning. According to the results, ZE/GE-PC-ZnO and ZE/GE-GA-ZnO films' contact angles were higher than those of Zein/Gelatin film by 28.91% and 21.27%, and their antioxidant activities were 5 and 9 times higher, respectively. Moreover, ZE/GE-PC-ZnO film showed good inhibitory activity against B. cinerea . On the eleventh day of the cherry packaging test, compared to unwrapped cherries, the losses of weight and firmness of wrapped fruit were reduced by more than 20% and 60%, respectively. Respiration time was delayed by 5 days, and the peak of ethylene release was decreased by nearly half. In conclusion, these two nanofiber films were viable packaging materials that fulfilled global strategies for green development.
研究领域:
材料科学
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食品科学
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环境科学
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生物技术
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农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CONTROL
·
2024
·
IF 5.6
Zeyu Qin,Qinbo Jiang,Meiyu Chen,Jiawen Li,Yang Li,Hui Zhang
This work aimed to investigat the properties of an antioxidant nanofiber coating incorporating zanthoxylum bungeanum essential oil and its function in the preservation of mangoes. Results showed that with the increase of zanthoxylum bungeanum essential oil-β-cyclodextrin inclusion complex (ZBEO-β-CD-IC) content in the nanofiber coating, the porosity, water vapor permeability, and oxygen permeability of the coating decreased, but the antioxidant activities increased. During storage, the increase of ZBEO-β-CD-IC content in the coating decreased weight loss and the respiration rate, and delayed the softening of tissue and yellowing of peel color. On the twelfth day, as the ZBEO-β-CD-IC content in the coating increased, the contents of flavonoids , total phenols, and ascorbic acid in mangoes increased from 2.36 × 10 −2 to 2.87 × 10 −2 g kg −1 , 23.76 × 10 −2 to 28.06 × 10 −2 g kg −1 , and 24.20 × 10 −2 to 39.38 × 10 −2 g kg −1 , respectively. Hydrogen peroxide content, superoxide anion rate, and malondialdehyde content decreased from 4.62 to 2.98 mmol kg −1 , 0.53 to 0.36 μmol min −1 kg −1 , and 8.22 to 6.24 μmol kg −1 , respectively. The activities of peroxidase , superoxide dismutase , catalase , ascorbate peroxidase were also inhibited after mangoes were coated in nanofibers containing ZBEO-β-CD-IC.
研究领域:
食品科学
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材料科学
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农业科学
·
植物生理学
✓ 已验证
DOI
高影响因子
Food Biophysics
·
2021
·Vol. 16
·期 4
·460-473
·
IF 3.114
Zhang Xiuling,Li Zhen,Ji Run,Li Kun,Zhang Wentao
Biodegradable composite films based on pullulan/carboxymethyl cellulose/nano-TiO 2 were prepared using a solution casting method. In this study, the composite films were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM), and their physical, mechanical and antimicrobial properties were investigated. FTIR and XRD results confirmed that the presence of nano-TiO 2 could enhance the interaction between the film matrix. SEM analysis revealed that the composite films had a homogeneous network structure, and good particle dispersion could be obtained when the nano-TiO 2 particle content was low. DSC results indicated that the composite films possessed good thermal stability. The incorporation of nano-TiO 2 increased the thickness and contact angle while significantly decreasing the water solubility ( p < 0.05). As the content of nano-TiO 2 increased, the water vapor and ultraviolet visible (UV–Vis) light barrier properties of composite films were significantly improved ( p < 0.05). Mechanical analysis demonstrated that the tensile strength of the composite films first increased and then decreased, whereas the elongation at break decreased significantly ( p < 0.05). In addition, the composite films exhibited excellent activity against Escherichia coli and Staphylococcus aureus mainly due to the inactivation of bacteria by nano-TiO 2 photocatalysis. Preservation experiments showed that the composite films could decrease the weight loss significantly and maintain the firmness, titratable acidity, vitamin c and skin color of strawberries, thereby improving the overall quality of strawberries and extending their shelf life. This finding suggested that pullulan/carboxymethyl cellulose/nano-TiO 2 composite films possessed excellent potential for application in food packaging.
研究领域:
材料科学
·
食品科学
·
生物技术
·
化学
·
农业工程
✓ 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）