POLYMER COMPOSITES
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2025
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IF 4.7
Jing Wang,Penghao Sun,Zhen Huang,He Liu,Shuangsheng Zhang,Yueyue Zhu,Hongxiao Wang,Xu Xu,Xujuan Huang
Cellulosic paper-based materials are considered to be one of the most potential candidates to replace non-degradable plastics, but the strong affinity between cellulose and water causes cellulosic paper-based materials to face the dilemma of poor water resistance and weak wet strength. Herein, a fatty acid-based hydrophobic modifier (SAT) is constructed by amidation reaction between (3-aminopropyl)triethoxysilane and stearic acid. The ethoxy groups in the structure of SAT can be covalently crosslinked with the hydroxyl groups of cellulose through hydrolytic condensation, thereby making cellulose paper-based materials exhibit excellent properties including (1) high mechanical properties (the dry-state tensile strength has doubled from 22.3 to 46.8 MPa, while the wet-state tensile strength has surged from 0.47 to 20.0 MPa), (2) long-term stability (mechanical properties remain almost unchanged after 40 days storage at 80% RH), (3) superb water resistance (soaked in water at 25°C for 1 h, water absorption drops from 247.0% to 56.5%; at 90°C, it falls from 290.5% to 82.9%), (4) eco-friendly (it can be completely degraded after being buried in soil for 90 days, or it can be recycled and reused). The aforementioned impressive performance positions SAT-modified cellulose paper as a formidable contender for plastic replacement in packaging applications. Highlights Fatty acid-based modifier (SAT) can modify cellulose by chemical bond. The low polarity of long-chain alkanes enables cellulose's hydrophobicity. Covalent crosslinking of SAT with cellulose ensures superb strength SAT paper is an unrivaled combination of degradability and recycling.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD BIOCHEMISTRY
·
2025
·Vol. 2025
·期 1
·4077536
·
IF 4.2
Jing Chen,Qinggui Lei,Weiqi Yang,Wenhao Wang,Guang’ e Tan,Zhengming Qian
Dandelion is a functional food that serves both medicinal and dietary purposes, which requires quality control to ensure its safety and efficacy. This study established a rapid high-performance liquid chromatography-ultraviolet (HPLC-UV) method for analyzing four organic acids in different parts of dandelion. After ultrasonic extraction with 40% methanol, samples were analyzed using an Agilent InfinityLab Poroshell 120 EC-C 18 column with a mobile phase of 0.1% formic acid aqueous-methanol and detection wavelength at 325 nm. The method completed the analysis in 5 min (2 min for extraction and 3 min for chromatographic analysis). The 4 organic acid standards (caftaric acid, chlorogenic acid, caffeic acid, and chicoric acid) showed excellent linearity ( r > 0.9995), and the average spiked recoveries were 101.38%, 96.85%, 103.94%, and 100.15% (relative standard deviations were 1.00%, 1.00%, 0.97%, and 0.55%), respectively. The total content of 4 organic acids is highest in dandelion flowers (1.355 mg/g dry weight [DW]), followed by stems/leaves (1.182 mg/g DW), and lowest in roots (0.026 mg/g DW). Additionally, to evaluate the environmental impact of both new and reported methods, this study performed an analysis using the blue applicability grade index. The developed methodology obtained the highest score of 80.0, which indicated that the developed HPLC method was most effective and eco-friendly. In conclusion, this method is rapid, accurate, and eco-friendly, which is help to the product development and quality evaluation of dandelion.
研究领域:
植物化学
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分析化学
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食品科学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2019
·
IF 3.021
Xinliang Li,Guancheng Jiang,Lili Yang,Kai Wang,He Shi,Gongrang Li,Xiongjun Wu
Various water-based drilling fluids (WBDFs) are increasingly being used in oil and gas exploitation, for more environmentally acceptable and low-cost advantages than oil-based drilling fluids (OBDFs). However, WBDFs without an effective inhibitor easily facilitate shale swelling, hydration, and dispersion and even induce well instability, which is quite disadvantageous for well drilling. Thus, high-performance and environmentally friendly shale inhibitors are desperately needed for WBDFs, especially in deep and other challenging wells. Previously, gelatin was adopted as an environmentally friendly shale inhibitor in our group. However, the shale inhibition performance was limited at a high temperature. In this work, gelatin was further modified by 2,3-epoxypropyltrimethylammonium chloride (EPTAC, denoted as GT) to introduce quaternary amine functionalities and improve shale inhibition performance. The inhibitive property of GT was systematically evaluated through the linear swelling test, hot-rolling recovery test, and Na–bentonite (Na–BT) inhibition test. Results indicated that GT displayed better inhibition performance, especially at a high temperature, than pure gelatin and other common inhibitors. GT can be strongly adsorbed on the negatively charged clay surface via electrostatic attraction and hydrogen bonding, effectively decreasing the ζ potential of Na–BT particles and suppressing the double electrical layers. Meanwhile, GT effectively encapsulated and gathered the clay particles together, therefore preventing water ingress into clay and shale. GT showed great potential as a high-performance and environmentally friendly shale inhibitor for WBDFs.
研究领域:
石油工程
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材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Small
·
2019
·Vol. 16
·期 3
·1906462
·
IF 10.856
Pengfei Sun,Panxing Bai,Zifeng Chen,Hai Su,Jixing Yang,Kang Xu,Yunhua Xu
Lithium primary batteries are still widely used in military, aerospace, medical, and civilian applications despite the omnipresence of rechargeable Li-ion batteries. However, these current primary chemistries are exclusively based on inorganic materials with high cost, low energy density or severe safety concerns. Here, a novel lithium-organic primary battery chemistry that operates through a synergetic reduction of 9,10-anthraquinone (AQ) and fluoroethylene carbonate (FEC) is reported. In FEC-presence, the equilibrium between the carbonyl and enol structures is disabled, and replaced by an irreversible process that corresponds to a large capacity along with methylene and inorganic salts (such as LiF, Li 2 CO 3 ) generated as products. This irreversible chemistry of AQ yields a high energy density of 1300 Wh/(kg of AQ) at a stable discharge voltage platform of 2.4 V as well as high rate capability (up to 313 mAh g −1 at a current density of 1000 mA g −1 ), wide temperature range of operation (−40 to 40 °C) and low self-discharge rate. Combined with the advantages of low toxicity, facile and diverse synthesis methods, and easy accessibility of AQ, Li-organic primary battery chemistry promises a new battery candidate for applications that requires low cost, high environmental friendliness, and high energy density.
研究领域:
材料科学
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电化学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
·
2018
·
IF 3.246
Shuai Zhang,Lin Ma,Ping Wen,Xiangyuan Ye,Rui Dong,Wenjing Sun,Mingjin Fan,Desuo Yang,Feng Zhou,Weimin Liu
This research into environmentally-friendly ionic liquids (ILs) used a series of choline amino acid ILs ([Ch][AA] ILs) prepared from choline cations and several amino acid anions. Their physicochemical and tribological properties were tested, and the results showed that [Ch][AA] ILs had good lubricating properties for different friction pairs at room temperature (RT). Their toxicities were checked against three aquatic organisms: brine shrimp, zebrafish and green algae. The results showed that they have a remarkably low toxicity. Versus traditional IL 1-butyl-3-methyl imidazolium tetrafluoroborate (L-B104), the [Ch][AA] ILs had comparable or even better physicochemical and tribological properties. More importantly, they had the environmentally features of biodegradability and non-toxicity.
研究领域:
材料科学
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环境科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2022
·
IF 7.693
Mingchao Wang,Zilong Liang,Shuoqing Yan,Xin Tao,Yunling Zou,Jiangtao Li,Xiaomeng Zhou,Haijun Zhang
In response to high environmental requirements, an incombustible inorganic intumescent flame retardant coating was prepared from amorphous aluminum phosphate emulsion as the matrix, with boron carbide as the modifier. The influence of boron carbide (B 4 C)on the fire resistance performance and physic-chemical properties of coatings were studied by means of large panel combustion method, smoke density test, Fourier transformed infra-red analysis (FTIR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), specific surface area (BET method) and pore size analysis. With the addition of 0.75 wt% B 4 C, the backside temperature of APB3 coating (aluminum phosphate-based coating modified with 0.75 wt% B 4 C) after an hour was only 140 ℃, 33.4 % lower than that of blank APB0 coating. And the smoke density (Ds) of APB3 was only 64.73 %, 36.3 % lower than that of blank APB0. The foaming expansion caused by decomposition reactions, the structural improvement caused by boron carbide oxidation, and the formation of ablative resistant ceramics and glass were the main reasons for excellent flame retardant and thermal insulation performance. Remarkably, the melting B 2 O 3 generated from the oxidation of B 4 C could repair cracks, modify pore structure, improve the integrity of closed pores, increase the specific surface area of porous structure, and promote the formation of borosilicate glass. Due to the structural integrity of the outermost coating surface caused by the oxidation of B 4 C and the construction of borosilicate glass, much gas was shielded inside the coating, making the coating more eco-friendly. Besides, APB3 coating has good water resistance. After immersion in water for 360 h, the reduction rate of fire resistance performance of the coating was only 17.1 %. This work provides theoretical guidance for broadening the types of intumescent coatings and promotes the development of inorganic green coatings.
研究领域:
材料科学
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防火安全工程
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2023
·Vol. 69
·期 11
·e18186
·
IF 3.7
Lei Zhang,Xue Gao,Renliang Huang,Mei Cui,Wei Qi,Rongxin Su
The commercialization of cellulose nanocrystals (CNCs) is currently limited by its environmental impact of high water consumption and brine wastewater generation. Here, a combined process integrating the production of CNCs and calcium sulfate whiskers (CSWs) was proposed to achieve complete utilization of the waste acid, and the corresponding environmental performance was evaluated by life cycle assessment (LCA). Accordingly, we prepared fibrous CSWs with an average length of 309 μm and an average aspect ratio of 57 under optimum conditions. The LCA results demonstrated the superior environmental performance of the combined process, especially for CNC production, and the impact values reduced by 45.6% on average. Moreover, the cost of producing 20 g of CNCs decreased from 3.04 CNY (traditional process) to 1.66 CNY (combined process). Therefore, this combined production process is eco-efficient and economically scalable for the industrial production of CNCs.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2017
·Vol. 18
·期 9
·1708-1717
·
IF 1.113
Cui Zhi-Hua,Xia Gang,Gao Jian-Rong,Chen Wei-Guo,Liu Ni-Ping,Ou Qi,Wang Ren-Liang
Three alkali-clearable azo disperse dyes containing a carboxylic ethyl ester group ( D1 - D3 ) were readily synthesized using three different synthetic strategies. D1 was prepared from a carboxylic acid-containing dye by esterification with ethanol. D2 was prepared from a carboxylic ester-containing dye by transesterification with ethanol. D3 was prepared from a cyano group-containing dye by alcoholysis with ethanol and water. The molecular structures of the dyes were characterized by FTIR, mass spectrometry, 1 H NMR, 13 C NMR, and elemental analysis. The synthesized dyes and the control dyes were used to dye poly(ethylene terephthalate) fabric, and their washing and rubbing fastness properties following different after-treatment methods (reduction clearing and alkali clearing) were examined and compared. The carboxylic ethyl ester-containing disperse dyes show good alkali clearing ability on poly(ethylene terephthalate) fabric and cause fewer environmental issues due to the absence of reductants, no production of aromatic amines with high toxicity and carcinogenicity, as well as the low toxicity of the dye hydrolysate ethanol.
研究领域:
化学
·
材料科学
✓ 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）