ACS Sustainable Chemistry & Engineering
·
2024
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IF 7.1
Qianyu Zhang,Hong Lei,Guanben Du,Antonio Pizzi,Jiaxuan Song,Long Cao,Buapan Puangsin,Xuedong Xi
Recently, formaldehyde-free environment-friendly bio-based wood adhesives have been a hot research topic in the wood industry. Glucose is a widely sourced biomass material, presenting also good reactivity, which has made it a focus of cutting-edge research. In the work presented here, a new formulation was developed for preparing a glucose-based biomass adhesive with excellent bonding strength and water resistance. Glucose was oxidized by sodium periodate at room temperature to generate bioaldehydes (OG), which were then reacted with a polyurea (HU) synthesized by reaction of hexamethylene diamine (HMD) with urea (U) via deamination. This resulted in an environmentally friendly green glucose-based adhesive (OGHU resin) containing neither formaldehyde nor other toxic volatile aldehydes. The effect of the mass ratio of HU/OG on the resin properties was investigated. The results showed that the OGHU resin imparted to the plywood bonded with excellent bonding strength and water resistance. The dry shear strength, 24 h cold water soaking wet strength, 3 h hot water (63 °C) wet strength, and 3 h boiling water wet strength were as high as 1.48 1.16, 1.26, and 1.12 MPa, respectively. Its superior bonding performance exceeded the expectations of the GB/T 9846–2015 standard (≥0.7 MPa) sufficiently to be considered as a substitute for the currently used urea-formaldehyde wood panel adhesives.
研究领域:
材料科学
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林业工程
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生物质化学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 25
·11371-11379
·
IF 3.591
Zheming Zhang,PingPing Jiang,Dekai Liu,Shan Feng,Yan Leng,Pingbo Zhang,Agus Haryono,Zhenhua Li,Yuchao Li
With increasing attention to the environment and health, the demand for environmentally friendly plasticizers, which were applied to produce phthalate-free flexible poly(vinyl chloride) (PVC), is becoming more and more urgent. In this work, a novel high efficiency plasticizer, an ester-capped oligomeric lactic acid mixture (EOL), was successfully synthesized by a two-step esterification reaction, with L-lactic acid as the main raw material. The structure of EOL was characterized by using FT-IR, 1H NMR and time of flight mass spectrometry (TOF-MS). The plasticizing performance of EOLs in PVC was tested and compared with those of commercial environmental plasticizers acetyl tributyl citrate (ATBC) and di-2-ethylhexyl terephthalate (DOTP). According to the results of tensile tests, the elongation at break of PVC plasticized by 50 phr EOLs reached 725.5%, indicating its superior mechanical properties. The result of TGA showed that the thermal stability of PVC plasticized by EOLs was as comparable as that of PVC plasticized by DOTP or ATBC. Furthermore, compared with ATBC and DOTP, EOLs showed better migration resistance in the leaching test. All test results showed that the comprehensive performance of EOLs was better than those of commercial green plasticizers ATBC and DOTP, which provided a new method for the development of novel green plasticizers.
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
高影响因子
CELLULOSE
·
2016
·Vol. 24
·期 2
·1159-1170
·
IF 3.195
Jia Yaling,Hu Yiwei,Zheng Dandan,Zhang Guangxian,Zhang Fengxiu,Liang Yaojia
An efficient and durable formaldehyde-free flame retardant consisting of an ammonium salt of pentaerythritol tetraphosphoric acid (APTTP) was prepared by a solventless synthesis and characterized by Fourier-transform infrared (FT-IR) spectroscopy and nuclear magnetic resonance. The flame retardancy of the treated cotton fabric was enhanced, as assessed by limiting oxygen index (LOI), vertical flammability, and cone calorimetry measurements. The collected results demonstrated that cotton fabrics treated with APTTP exhibited high flame retardancy and excellent durability. Cotton fabric treated with a 140 g/L APTTP solution showed a LOI of 43.8%, and this value reduced to 26.9% after 50 laundering cycles. No after-flame and after-glow phenomena were presented during vertical flammability tests for all cotton fabrics treated with different concentrations of APTTP. Cone calorimetry results revealed a significant reduction in the intensity of the heat release rate and total heat release peaks. X-ray diffraction revealed that the crystalline particles of cotton fibers treated with APTTP were slightly affected compared with those of control sample. FT-IR spectroscopy results revealed that APTTP was grafted on the cotton fibers. Scanning electron microscopy showed that the surface of the treated cotton fibers remained smooth, while thermogravimetric analysis confirmed that the treated cotton fibers easily decomposed to form char. It was proposed that the flame retardant mechanism of APTTP occurred in the condensation phase.
研究领域:
材料科学
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纺织工程
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DOI
高影响因子
Applied Materials Today
·
2021
·
IF 10.041
Kaiqiang Zhang,Feng Xu,Yanfeng Gao
A superhydrophobic surface is typically constructed by combination of both low surface energy substance and high roughness microstructure. Although these surfaces have been widely used in the application of self-cleaning, water harvesting and anti-icing, the problems of organic solvents during the preparation process and the undesirable durability have largely limited their practical application. This paper describes a new concept and derived environmental friendly method based on a waterborne solution for the fabrication of durable superhydrophobic and oleophobic surfaces with self-healing property. In this concept, aluminum oxide particles were employed to construct the rough microstructure, fluorosurfactant and fluorinated alkyl silane were employed as low surface energy materials. The obtained surfaces coated on different substrates (glass, wood, fabric, polymer, metal) showed not only excellent water repellent performance with water contact angle larger than 150° and sliding angle is less than 10° but also oleophobic for some low surface energy organic liquid such as glycol, oleic acid, cooling oil and dimethyl formamide. The surfaces show excellent durability to solutions with different pH, abrasion resistance and self-healing by heating the oxygen-plasma-destroyed surface. The proposed coatings with excellent superhydrophobic and oleophobic performance will demonstrate the potential application in self-cleaning and antifouling.
研究领域:
材料科学
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表面工程学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Jianhui Yuan,Qingshan Gu,Guangzhi Zheng,Jin Yang,Wenjie Zhao,Yangmin Wu
With the increasingly strict requirements for marine environmental protection, the demand for antifouling coatings that can replace organotin is becoming more urgent. Here, environmentally friendly lubricants were infused into porous surfaces to obtain antifouling coating. The stability of the coating was evaluated by the contact angle and sliding angle tests. The antifouling performance was intuitively represented by the adhesion quantity of three marine algae. The adhesion experiment showed that a lubricating oil of suitable viscosity balanced stability and lubricity, so that the silicone oil (PMX200-100)-infused surface showed the best antifouling effect. However, it was covered by Navicula exigua (N. exigua) after a long time of immersion. In our work, the grease-infused surface displayed outstanding stability in water. In addition, the grease-infused porous surface showed another state of algae attachment after a period of immersion in algae solution. Algae adhered to the surface and congregated to form a layer of biofilm , but it could be easily removed and re-expose the new grease-infused surface. The requirement of lubricating grease for porous surface structures is not as high as that of lubricating oil. The grease-infused surface has a long-term circulation antifouling effect on algae.
研究领域:
海洋生物学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Hongmei Dong,Lifeng Ding,Boyuan Ran,Yongbo Song,Ruihong Wang,Lu Zhao,Yulan Niu
Developing efficient and eco-friendly corrosion inhibitors to replace traditional toxic and harmful ones is necessary for protecting the ecological environment. Herein, we have developed an eco-friendly drug corrosion inhibitor, Ribavirin (RBVR), which could effectively inhibit Q235 steel corrosion in 1 M HCl solution. EIS results showed that RBVR slowed down the corrosion rate of steel, and η could reach up to 97.7 % when the concentration of RBVR was only 10 mM. The potentiodynamic polarization curve results indicated that RBVR was a modest mixed-type corrosion inhibitor that could inhibit steel anodic and cathodic reactions. The adsorption isotherm and theoretical calculations revealed that the adsorption of RBVR on the steel surface was in the form of parallel adsorption, which maximized the protection of steel. The adsorption of RBVR molecules on the steel was mainly based on the N and O heteroatoms as the active adsorption centers. A monolayer protective film was formed on the steel surface, which retarded the dissolution of active sites. This work will provide a theoretical basis for developing novel, efficient, eco-friendly organic inhibitors and promoting their industrial application.
研究领域:
材料科学
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腐蚀与防护
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药物化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
·
IF 8.2
Zenghui Cheng,Ren Ye,Xiaoyu Shi,Chenhuan Lai,Shishuai Gao,Daihui Zhang,Yuzhi Xu,Chunpeng Wang,Fuxiang Chu
Wheat gluten (WG) shows great promise to synthesize environment-friendly wood adhesives. However, their weak bonding strength and poor water resistance have limited its application in the commercial wood-based panel industry. In this study, a novel WG-based adhesive was developed by constructing a multiple cross-linking network generated by covalent and non-covalent bonds. The potential mechanism was revealed by FT-IR analysis. Furthermore, their surface morphology, thermal stability , viscosity, and residual rate of adhesives with different compositions were systematically characterized and compared. The results showed that the hydrogen bonding, reactions between amine groups and tannin , and ring opening reaction of epoxy, synergistically contributed to generate a highly crosslinked network. The wet/boil water strength of the plywood prepared from WG/tannin/ethylene imine polymer (PEI)-glycerol triglycidyl ether (GTE) adhesive with the addition of 15 % GTE could reach 1.21 MPa and 1.20 MPa, respectively, and a mildew resistance ability was observed. This study provides a facile strategy to fabricate high-performance plant protein-based adhesives with desirable water resistance for practical application.
研究领域:
材料科学
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林业工程
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Yongcai Wu,Yan Chai,Liqian Yu,Wensheng Gao,Yongxiao Bai
Eco-friendly flame-retardant fabrics have recently been widely concerned and developed due to highly flammable characteristics of fabrics and environmental protection issues. Phytic acid (PA) was optimized as a common flame-retardant relying on its environmentally friendly and flame retardant characteristics. However, the strong acidity of PA always results in the loss in mechanical properties of the fabric. Herein, a synergetic strategy by compositing PA and ethanolamine (ETA) was proposed to enhance the flame resistance of the PA6 fabric. As a result, after the flame-retardant coatings prepared by the synergy of PA and ETA are impregnated on the surface of PA6 fabric, the limiting oxygen index (LOI) of PA6 fabrics increased from 21.2 % to 30.4 % with on a well mechanical strength retention rate (MSR) (more than 75 %), which is much better than the PA6 fabric treated by pure PA (LOI: 25.3 %, MSR: less than 40 %). The analysis results indicate that ETA not only reduces the damage of PA to PA6 fabrics but also plays an important role as a carbon and nitrogen source in the intumescent flame-retardant mechanism. This synergistic strategy provides a new reference for the development of environmentally friendly flame-retardant coatings.
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
ENERGY & FUELS
·
2024
·
IF 5.2
Hehai Zhang,Xinliang Li,Yuehai Shao,Kai Wang,Jianghao Peng,Han Fang
With the continuous improvement of environmental protection requirements in the drilling fluid industry, the research of environmentally friendly additives has been widely discussed. Modified starch is a typical natural material and has been usually used as an environmentally friendly fluid loss additive. However, their high-temperature resistance is poor and limits their application. In this study, a composite fluid loss additive (STA) was prepared by reverse emulsion polymerization using corn starch and alkyl glycoside as raw materials and epichlorohydrin as the cross-linking agent. The molecular structure, thermal stability, and microstructure of STA were characterized, and its filtration properties were systematically evaluated. Results demonstrated that the thermal decomposition temperature of STA was 324 °C and significantly higher than that of corn starch. STA was irregularly spherical in an aqueous solution, and its surface presented a porous structure. Moreover, STA was easily biodegradable with a BOD/CODcr ratio of 19.2%. Filtration tests showed that the temperature resistance of STA could reach 170 °C, and 3% of STA reduced the fluid loss volume of 4% bentonite suspension by 62.71%. In comparison, the filtration performance of STA was better than those of corn starch and commonly used sodium carboxymethyl starch. On one hand, STA had a cross-linked structure and a long paraffin chain, providing strong thermal stability at high temperatures. Besides, the porous structure of STA was beneficial for plugging through shape change and adsorbing water in drilling fluids. On the other hand, STA would interact with clay, increase the viscosity of the bentonite suspension to a certain extent, and improve the colloidal stability. Finally, STA plugged the pores and formed a thin, compact, and relatively hydrophobic filter cake, reducing fluid loss, even at high temperatures. STA can be used as a fluid loss additive with efficient high-temperature resistance and environmental friendliness and also provides new guidance for designing high-performance water-based drilling fluids.
研究领域:
材料科学
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石油工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Yijie Wang,Guancheng Jiang,Qiannan Wang,Yinbo He,Lili Yang,Tengfei Dong,Xingxing Wang
In the development of deep shale oil and gas, the working temperature of the water-based drilling fluids is relatively high, which can cause wellbore instability due to the poor temperature resistance of the traditional environmental-friendly additives. To address this issue, this study presents a wellbore stabilizer called PMG, prepared by modifying gelatin (GT) with a resin synthesized by polyvinyl alcohol (PVA) and methacrylic acid (MA) through hydrothermal free radical polymerization, and it can withstand temperature up to 200 °C. The synthesis and thermal stability of PMG were confirmed by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). The wellbore stability performance of PMG was evaluated by linear swelling test, rolling recovery test, core immersion experiment and point load test and the wellbore stability mechanism was also investigated. The results reveal that the swelling height of sodium-based bentonite (Na-BT) in 2.0 % PMG solution at 150 °C is only 0.97 mm; the hot-rolling recovery rate in 2.0 % PMG solution at 200 °C is 72 %; the artificial core still maintains its original appearance after being immersed in 2.0 % PMG solution at 200 °C for 16 h, and the compressive strength increases by 12 %, effectively strengthening the wellbore. In addition, the EC 50 value of PMG is > 10 6 mg/L, and the BOD 5 /COD cr value is 31 %, indicating that it is non-toxic and biodegradable. PMG has excellent wellbore stability performance, in addition to being able to adsorb on the surface of Na-BT by electrostatic action and hydrogen bonding, the PMG micelles that precipitated from the aqueous solution due to the breaking of hydrogen bonds in the molecular chain at high temperature also form a film on the clay surface, aggregating and cementing the clay particles together, further enhancing the wellbore stability.
研究领域:
石油工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yinfeng Li,Huaiyuan Cao,Zixiao Xue,Ran Luo,Xuejie Lin,Yuhua Xue,Long Zhang,Jin He
In the field of optical bonding, traditional optical adhesives typically contain toxic organic polymers and solvents, limiting their widespread application. Hence, there is an urgent need for environmentally friendly aqueous adhesives. While there have been efforts to develop green adhesives, few report their performances with optical substrates. The unique requirements for optical adhesives include: optically transparent; the refractive index match of the substrate; minimal stress during and after curing. This presents a challenge to ensure compatibility between green and optical. This study introduces a novel sol-gel adhesive derived from an Al 2 O 3 –P 2 O 5 -lactate system. This adhesive is biocompatible, uses water as the sole solvent. It exhibits exceptional optical clarity, with more than 99 % transparency in the visible light and near-infrared regions. Furthermore, it provides reliable bonding strength , particularly when bonded with sapphire crystal substrates, reaching a maximum of 5.96 MPa. Interfacial chemistry analysis reveals the critical role of acidic components (such as phosphoric and lactate groups) in adhesives accounted for the bonding mechanism. By increasing the molar ratio of phosphoric acid , the bonding strength of adhesive was significantly enhanced across various substrates. This sol-gel adhesive not only adheres to green chemistry principles but also shows promising potential for optical bonding applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2025
·
IF 1.9
Xinyu Zhou,Shaocong Pang,Luo Zhao,Yuxiu An
The continuous depletion of shallow oil and gas reserves, the exploration focus has shifted to deeper geological formations. This transition has led to significantly higher demands on the lubricity of drilling fluids. Traditional lubricants, which often contain harmful elements, are increasingly facing regulatory restrictions due to environmental and safety concerns. Consequently, the development of new, environmentally friendly lubricants has emerged as a prominent area of research in the oil and gas industry. In this study, choline chloride and 1,3-butanediol were selected as raw materials to synthesize a deep eutectic solvent, designated as HTG-1, which serves as a novel environmentally friendly drilling fluid lubricant. A series of experimental tests were carried out to comprehensively evaluate the performance of HTG-1. At temperatures below 180 °C, HTG-1 demonstrated a remarkable enhancement in the lubricating properties of both drilling fluids and filter cakes. The adhesion coefficient was effectively maintained within the range of 0.1, resulting in a reduction rate exceeding 50%. As the concentration of HTG-1 increased, the filter cakes consistently maintained a low adhesion coefficient, ranging from 0.0761 to 0.1157 at 160 °C and from 0.0642 to 0.1053 at 180 °C. Moreover, it exhibited higher reduction rate values, indicating its superior performance in reducing friction and enhancing overall drilling efficiency. HTG-1 exhibited remarkable salt resistance. The lubricating mechanism of HTG-1 involves the adsorption of choline chloride and the formation of numerous hydrogen bonds. This mechanism contributes to its excellent lubricating properties and ability to reduce friction in drilling operations.
研究领域:
石油工程
·
环境科学
✓ 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）