Green Materials最新文献_第5页

Biosourced alternatives to diglycidylether of bisphenol A in epoxy-amine thermosets: a focus on materials properties and endocrine activity 环氧胺热固性材料中双酚A二甘油酯的生物源替代品:对材料特性和内分泌活性的关注

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-05-19 DOI: 10.1680/jgrma.23.00027

R. Tavernier, M. Semsarilar, S. Caillol

{"title":"Biosourced alternatives to diglycidylether of bisphenol A in epoxy-amine thermosets: a focus on materials properties and endocrine activity","authors":"R. Tavernier, M. Semsarilar, S. Caillol","doi":"10.1680/jgrma.23.00027","DOIUrl":"https://doi.org/10.1680/jgrma.23.00027","url":null,"abstract":"Since 1940s, bisphenol A (BPA) has been used in plastic industry reaching production of 10 million tons in 2022. More than 30 % of the produced BPA is used in the production of epoxy resins. Decades of research has now provided enough evidence that (BPA) has endocrine disrupting activity. Hence, it is an urgent matter to replace the use of BPA in production of epoxy resins. In the past years, considerable effort have been put into finding alternatives to the toxic BPA. However, the diglycidylether bisphenol A (DGEBA) does not only exhibits high polymerization reactivity, but the presence of aromatic rings confers interesting thermos-mechanical resistance to epoxy networks therefrom. Hence, this properties are also expected from potential alternatives to BPA. In this review, first the elements leading to toxicity of BPA is explained and then a thorough account of possible bio-sourced aromatic alternatives to BPA are gathered. The reported synthetic routes to each of these alternatives and their toxicity are described. Also, their use in synthesis of epoxy resins and how the new alternatives influence the mechanical properties are discussed. This is a concise summary of the structure-property and structure-toxicity relationship for possible bio-sourced substitutes of BPA in synthesis of epoxy resins.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48803921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and properties of rosin-based naphthalene fluorescent polyurethane 松香基萘荧光聚氨酯的制备及性能

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-05-15 DOI: 10.1680/jgrma.23.00031

Jian-Feng Xu, Chengfei Yan, Guangjie Lu, Caili Yu, F. Zhang

{"title":"Preparation and properties of rosin-based naphthalene fluorescent polyurethane","authors":"Jian-Feng Xu, Chengfei Yan, Guangjie Lu, Caili Yu, F. Zhang","doi":"10.1680/jgrma.23.00031","DOIUrl":"https://doi.org/10.1680/jgrma.23.00031","url":null,"abstract":"Fluorescent polyurethanes (FPU) have been widely used in coatings, temperature recognition, fluorescent probes, and other fields because of their diverse structures and properties. Unfortunately, most FPUs are currently produced from petroleum-based products. Herein, a thermoplastic rosin-based naphthalene FPU was prepared by using the biobased ester of acrylic rosin and glycidyl methacrylate, polycaprolactone, 1, 5-dihydroxy naphthalene (1, 5-DN) and isophorone diisocyanate as the raw materials. The structure of FPU was confirmed by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). In addition, thermal performance analysis (TGA, DSC) and water contact angle analysis (WCA) showed that the addition of 1, 5-DN improved the thermal stability and hydrophobicity of FPU. More importantly, FPU exhibited good fluorescence performance in both liquid and solid states, and the fluorescence intensity increased with increasing temperature. Both aniline and trichloromethane showed effective fluorescence quenching for FPU. Therefore, FPU is a promising material for applications in temperature recognition and fluorescence probes.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42791212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of phosphorus based flame retardants on the thermal and fire retardant properties of chicken feather/thermoplastic polyurethane composites 磷基阻燃剂对鸡毛/热塑性聚氨酯复合材料热阻性能的影响

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-05-12 DOI: 10.1680/jgrma.23.00008

Aysenur Mutlu, M. Doğan

引用次数: 1

The effect of lignin-based polyols on the properties of polyurethane coatings 木质素基多元醇对聚氨酯涂料性能的影响

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-05-05 DOI: 10.1680/jgrma.23.00040

Fatemeh Farhood Hassani Khorshidi, S. Najafi, F. Najafi, A. Pizzi, D. Sandberg, R. Behrooz

{"title":"The effect of lignin-based polyols on the properties of polyurethane coatings","authors":"Fatemeh Farhood Hassani Khorshidi, S. Najafi, F. Najafi, A. Pizzi, D. Sandberg, R. Behrooz","doi":"10.1680/jgrma.23.00040","DOIUrl":"https://doi.org/10.1680/jgrma.23.00040","url":null,"abstract":"The aim of this research was to replace petroleum-based polyols with polyols made from lignin and nano-lignin in the production of polyurethane coatings. Lignin and nano-lignin were first reacted with either diethylenetriamine (DETA) or ethylenediamine (EDA). Subsequently, they were modified with propylene carbonate. The lignin and nano-lignin derived polyols replaced the conventional polyol-acrylic in the production of polyurethane coatings. The results of FTIR analysis showed that urethane, isothiocyanate, and strong C-N bonds were formed in nano-lignin-based polyurethanes. Moreover, the surface-adhesion test of the lignin-based polyurethane coating showed that by increasing the lignin content, the adhesion strength of the coating decreased. Mixing lignin nanoparticles in the polyurethane substrate caused the adhesion strength to rise from 1.67 MPa to 4.52 MPa. An increase of amino nano-lignin content up to 7% of oil based polyol improved the curing of the coating and increased the scratch resistance to more than 5 Kg. The results showed that lignin from a mechanical pulping process has a direct effect on reducing the smoothness and the glossiness in polyurethane coatings.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48617655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Automated trackspinning of highly oriented, ultrafine lignin fibers as precursors for green carbon nanofibers 高取向、超细木质素纤维作为绿色纳米碳纤维前驱体的自动跟踪纺丝

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-05-04 DOI: 10.1680/jgrma.23.00037

Dave Jao, Abigail Heinz, J. Stanzione, V. Beachley

{"title":"Automated trackspinning of highly oriented, ultrafine lignin fibers as precursors for green carbon nanofibers","authors":"Dave Jao, Abigail Heinz, J. Stanzione, V. Beachley","doi":"10.1680/jgrma.23.00037","DOIUrl":"https://doi.org/10.1680/jgrma.23.00037","url":null,"abstract":"At present, most carbon fibers are made from non-renewable polyacrylonitrile (PAN). Substantial efforts have been made to replace the need for petroleum-based precursors for carbon fiber production. Interestingly, lignin is a carbon fiber precursor material that is cheap, highly available, and sustainable. Sub-micron scale lignin-based carbon nanofibers could find use in numerous areas, such as electronic devices, batteries, supercapacitors, and low-cost, high performance structural composite materials. Trackspinning (TS) technology offers a way scale the versatile, but inefficient mechanical pulling technique to produce small diameter lignin fibers from environmentally friendly aqueous solutions. In this study, the effects of track spinning based on probe drawing of low concentration lignin nanofibers blended with polyethylene oxide (PEO) and glycerol in sodium hydroxide (NaOH) solution were investigated. TS lignin fibers were well aligned and reached diameters as low as 500-1000 nm as the drawing length was increased. Lignin fiber macromolecular alignment was isotropic at low levels of draw and dichroic ratio was increased from 1 to 2.25 by doubling the drawing length. The most highly drawn track-spun lignin fibers had a mechanical strength of 3.92 MPa and a Young’s Modulus of 2.15 GPa, which were similar to reported values for solvent electrospun lignin nanofibers. These findings support the potential to utilize TS to produce small diameter lignin fibers using a simple aqueous solvent approach.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41513295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on Jordanian green natural agro wastes as potential inhibitors of mild steel corrosion in hydrochloric acid solution 约旦绿色天然农业废弃物在盐酸溶液中作为低碳钢缓蚀剂的研究

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-04-28 DOI: 10.1680/jgrma.21.00040

M. Hayajneh, M. Almomani, Wala’ M AlSharman

{"title":"A study on Jordanian green natural agro wastes as potential inhibitors of mild steel corrosion in hydrochloric acid solution","authors":"M. Hayajneh, M. Almomani, Wala’ M AlSharman","doi":"10.1680/jgrma.21.00040","DOIUrl":"https://doi.org/10.1680/jgrma.21.00040","url":null,"abstract":"Mild steel is one of the most widely used materials in different engineering applications due to its mechanical properties, high availability, and low cost. However, the exposure of the steel to acids such as hydrochloric acid (HCl) accelerates its corrosion rate. Green organic corrosion inhibitors are among the most effective materials to reduce the mild steel corrosion rate in an acidic medium. These inhibitors are environmentally accepted, easy to extract, and non-toxic. This study investigates the feasibility of using different green Jordanian natural agro-wastes as green organic corrosion inhibitors and determines the efficiency of these inhibitors at different concentrations at room temperature. The potentiodynamic polarization test was used in two sets of runs; the first set of runs was used to screen ten extracted green inhibitors and choose three based on their highest efficiency. In the second set of runs, the test was performed only for the highest efficiency inhibitors selected from the first run. A weight-loss and Fourier-transform infrared spectroscopy test was also performed for the selected inhibitors. The results of the tests indicate that the green Zucchini (Cucurbita pepo) leaf extract (CPLE), Oak (Quercus) leaf extracts (QLE), and Okra (Abelmoschus esculentus) leaf extracts (AELE) were the selected inhibitors.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48955054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green Materials: Referees 2022 绿色材料:裁判员2022

4区材料科学

Green Materials Pub Date : 2023-03-01 DOI: 10.1680/jgrma.2023.11.1.48

引用次数: 0

Award-winning paper in 2021 2021年获奖论文

4区材料科学

Green Materials Pub Date : 2023-03-01 DOI: 10.1680/jgrma.2023.11.1.47

引用次数: 0

Editorial: 2023 is a remarkable year for green chemistry and Green Materials 社论：2023年是绿色化学和绿色材料的非凡一年

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-03-01 DOI: 10.1680/jgrma.2023.11.1.1

S. Caillol

引用次数: 1

Production of low carbon cement containing sewage sludge ash as mineral admixture 以污水污泥灰为矿物掺合料的低碳水泥的生产

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-02-10 DOI: 10.1680/jgrma.21.00004

Shubham Goswami, D. Shukla, P. Singh

{"title":"Production of low carbon cement containing sewage sludge ash as mineral admixture","authors":"Shubham Goswami, D. Shukla, P. Singh","doi":"10.1680/jgrma.21.00004","DOIUrl":"https://doi.org/10.1680/jgrma.21.00004","url":null,"abstract":"Cement is an essential construction ingredient and its demand has increased multifold during the last couple of years due to various construction activities. For the manufacture of cement, limestone is the key component that is the major source of carbon dioxide (CO2) emission. Moreover, local municipalities all over the world have long been concerned about the disposal of sewage sludge. Larger quantity of sewage sludge generation is becoming an urgent alternative solution for sludge disposal and waste recycling in construction materials. In accordance with the concept of sustainability, low carbon cement is produced in the current study by blending sewage sludge ash (SSA) and carbide lime sludge (CLS) (industrial waste) with Ordinary Portland Cement (OPC). In terms of physical properties, the influence of low carbon cement containing different percentages of SSA with 10% CLS is compared with composite cement containing fly ash (FA) in different percentages addition with 10% CLS. The outcome from the study shows that the utilization of SSA with CLS up to 45% would be possible with OPC as it indicates an acceptable level of compressive strength, conservation of depleting limestone reserves, saving in thermal and electrical energy besides emissions reduction of CO2.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42791394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0