Green Materials最新文献_第2页

Effect of carbodiimides on the compatibility and hydrolytic behavior of PLA/PBAT blends 碳二亚胺对PLA/PBAT共混物相容性及水解行为的影响

4区材料科学

Green Materials Pub Date : 2024-09-24 DOI: 10.1680/jgrma.24.00072

Yang Wang, Chen Chen, Jun Li, Jinfei Huang, Lulu Xiong

{"title":"Effect of carbodiimides on the compatibility and hydrolytic behavior of PLA/PBAT blends","authors":"Yang Wang, Chen Chen, Jun Li, Jinfei Huang, Lulu Xiong","doi":"10.1680/jgrma.24.00072","DOIUrl":"https://doi.org/10.1680/jgrma.24.00072","url":null,"abstract":"Blends of polylactic acid (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) have great potential to replace conventional polyolefin and polyester materials. However, poor compatibility and fast degradation rate limit its development. In this paper, the effects of two monomer-type carbodiimides and one polymerized carbodiimide on the crystalline, thermal stability, hydrolysis properties, and mechanical properties of PLA/PBAT blends are investigated by Fourier transform infrared spectroscopy, scanning electron microscope, differential scanning calorimetry, thermogravimetric analysis, gel permeation chromatography, melt mass-flow rate, terminal carboxyl content, tensile properties, and rotational torque. It is found that all the three carbodiimide additives can improve the compatibility and enhance the mechanical, processing, and thermal stability properties of PLA/PBAT blends except for their reduced crystallization performance. Moreover, regarding the hydrolysis properties, the two monomeric carbodiimides exhibit little effect on the hydrolysis of PLA/PBAT blends, even accelerating the degradation rate under alkaline conditions. However, the antihydrolysis effect of polycarbodiimide is remarkable, which effectively improves the compatibility and antihydrolysis properties of PLA/PBAT blends.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"13 5","pages":"582-593"},"PeriodicalIF":0.0,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147922866","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: 4

Soy protein isolate–based gel polymer electrolyte for flexible solid-state supercapacitor 柔性固态超级电容器用大豆分离蛋白凝胶聚合物电解质

4区材料科学

Green Materials Pub Date : 2024-08-26 DOI: 10.1680/jgrma.23.00096

Pu Hou, Zhiyu Xun, Jiuzhou Zhang, Yang Liu, Pengfei Huo, Zhenhua Gao

{"title":"Soy protein isolate–based gel polymer electrolyte for flexible solid-state supercapacitor","authors":"Pu Hou, Zhiyu Xun, Jiuzhou Zhang, Yang Liu, Pengfei Huo, Zhenhua Gao","doi":"10.1680/jgrma.23.00096","DOIUrl":"https://doi.org/10.1680/jgrma.23.00096","url":null,"abstract":"At present, the polymer matrices of most polymer electrolytes are derived from petroleum-based synthetic polymers. Herein, sustainable and renewable soy protein isolate (SPI) was grafted with methacrylic acid (MAA) and then cross-linked by ring-opening reaction with polyethylene glycol diglycidyl ether as cross-linking agent to obtain a biomass-based polymer electrolyte. Results show that when the added amount of MAA is twice the quality of SPI, gel polymer electrolyte displays the best comprehensive properties and presents the highest ionic conductivity of 5.24 × 10−3 S/cm. The flexible supercapacitor was fabricated by using SPI-based gel polymer electrolyte with activated carbon electrodes, which exhibited excellent specific capacitance (128.63 F/g) and energy density (9.52 Wh/kg) at 0.5 A/g with a decent capacitance retention of 93% after 5000 charge–discharge cycles. It can be ascribed that grafting modification of SPI improves the interface performance of electrode–polymer electrolyte. Furthermore, potassium iodide is introduced to form a redox polymer electrolyte to achieve a high-energy-density supercapacitor, which provides outstanding energy density of 24.40 Wh/kg at 1.0 A/g. This work demonstrates that sustainable and renewable biomass can be converted into matrix of polymer electrolyte for high performance supercapacitor based on aqueous polymer electrolyte.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"13 5","pages":"507-518"},"PeriodicalIF":0.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881218","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 performance study of modified diatomite based PCM for construction 改性硅藻土基建筑材料的制备及性能研究

4区材料科学

Green Materials Pub Date : 2024-08-24 DOI: 10.1680/jgrma.24.00056

Dahua Jiang, Pu Chen, Jingtao Liu, Yuzhen Xu

{"title":"Preparation and performance study of modified diatomite based PCM for construction","authors":"Dahua Jiang, Pu Chen, Jingtao Liu, Yuzhen Xu","doi":"10.1680/jgrma.24.00056","DOIUrl":"https://doi.org/10.1680/jgrma.24.00056","url":null,"abstract":"Phase change energy storage technology provides a good solution to the spatial and temporal mismatch of energy use in buildings, but organic solid–liquid phase change materials suitable for the building sector limit their application due to leakage problems. To mitigate the effects of the above problems, diatomite (DME) is designed as the carrier for encapsulation in this experiment. Adsorption performance of DME is improved through double effects of 600°C high-temperature calcination and hydrochloric acid modification. The binary low eutectic mixture was prepared by co-melting of lauric acid (LA) and octadecyl alcohol (OD) with mass ratio of 70:30. Shape-stabilized composite phase change material (SSCPCM) was prepared by vacuum adsorption method with LA-OD and DME with a mass ratio of 35:65 and the melting temperature and latent heat of SSCPCM are 39.10°C and 54.02 J/g. It was experimentally evaluated that the surface impurities of modified DME under microscopic conditions were removed and LA-OD was uniformly embedded in the micropores of DME, and the prepared SSCPCM was able to maintain a thermal inertia of 39°C with good thermal properties and thermal stability, thus SSCPCM could be used as a building energy-saving material to reduce building energy consumption, in addition to expanding the utilization of inorganic mineral materials.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"13 5","pages":"485-497"},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903750","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: 5

Bio-based sulfonated surfactants with high Ca2+ tolerance in detergent formulations 生物基磺化表面活性剂在洗涤剂配方中具有高Ca2+耐受性

4区材料科学

Green Materials Pub Date : 2024-08-24 DOI: 10.1680/jgrma.24.00066

Dandan Yang, Hong‐Ze Gang, Shi‐Zhong Yang, Bo‐Zhong Mu

{"title":"Bio-based sulfonated surfactants with high Ca2+ tolerance in detergent formulations","authors":"Dandan Yang, Hong‐Ze Gang, Shi‐Zhong Yang, Bo‐Zhong Mu","doi":"10.1680/jgrma.24.00066","DOIUrl":"https://doi.org/10.1680/jgrma.24.00066","url":null,"abstract":"The use of calcium-resistant surfactants in household and industrial washing applications may simplify the formulation composition of laundry and therefore reduce costs. A series of bio-based surfactants, N-alkyl furfuryl methylamine sulfonates (AFMS), was developed from the biomass-derived furfural and aliphatic amines by a simple and effective method. The structure of these bio-based surfactants was characterized by gas chromatography–mass spectrometry, liquid chromatography–mass spectrometry and 1H nuclear magnetic resonance spectroscopy. These bio-based surfactants demonstrated low surface tension, high emulsification, and high decontamination efficiency. Meanwhile, the AFMS surfactants exhibited excellent calcium resistance, maintaining micelle stability in Ca2+up to 2.16 × 104 mg/L and the solution clarification in Ca2+up to 7.21 × 104 mg/L. Furthermore, the AFMS surfactants had a stable decontamination effect in hard water. The wetting ability, foaming ability, toxicity, and biodegradability parameters were also evaluated. Therefore, the AFMS surfactants synthesized in this work could be applied as a more efficient and promising bio-based surfactant candidate for application in household and industrial washing.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"13 5","pages":"498-506"},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147880765","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: 2

Effect of temperature on sawdust and sawdust pellets during dry and wet torrefaction 干湿焙烧过程中温度对木屑和木屑颗粒的影响

4区材料科学

Green Materials Pub Date : 2024-07-30 DOI: 10.1680/jgrma.24.00045

Kaijun Wang, Xieli Hu, Qiantao Zhang, Xinming Liu, Shang Jianli, Sining Yun

{"title":"Effect of temperature on sawdust and sawdust pellets during dry and wet torrefaction","authors":"Kaijun Wang, Xieli Hu, Qiantao Zhang, Xinming Liu, Shang Jianli, Sining Yun","doi":"10.1680/jgrma.24.00045","DOIUrl":"https://doi.org/10.1680/jgrma.24.00045","url":null,"abstract":"Dry torrefaction (DT) and wet torrefaction (WT) as pretreatment methods to prepare sawdust pellets show great potential for enhancing the quality of biomass pellets. However, few studies have focused on the comprehensive comparison and evaluation of DT and WT. Herein, the effects of DT (200°C–280°C) and WT (180°C–240°C) on the physicochemical properties of sawdust and sawdust pellets were investigated. The results showed that both pretreatment methods reduced the mass yield (92.67–84.33% for DT, 93.42–90.39% for WT) and energy yield (94.78–90.78% for DT, 93.42–92.20% for WT) of sawdust while increasing the higher heating value (17.79–18.73 MJ/kg for DT, 17.44–17.79 MJ/kg for WT). Fourier-transform infrared spectroscopy indicated that WT had a significant effect on the degradation of cellulose and hemicellulose compared with DT samples. Thermogravimetric analysis revealed that DT and WT efficiently reduced the residue (9.16–13.63% for DT, 10.22–10.91% for WT) and improved the stability of sawdust compared with untreated sawdust (13.70%). Sawdust pellets prepared by WT-180 and WT-200 exhibited enhanced hydrophobicity and pressure resistance. The WT-200 had the superior effect on the performance improvement of sawdust and sawdust pellets. This work offers insights into selecting appropriate pretreatment techniques to enhance the quality of biomass pellets and tackle logistics and transport challenges.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"13 5","pages":"428-439"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915103","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: 3

Green synthesis and optimization of iron oxide nanoparticles using central composite design as MRI contrast agent 利用中心复合设计绿色合成和优化作为磁共振成像造影剂的氧化铁纳米粒子

IF 1.9 4区材料科学

Green Materials Pub Date : 2024-04-07 DOI: 10.1680/jgrma.23.00089

Yuwvaranni S, Amritta B, Weslen Vedakumari S, Chamundeeswari M

{"title":"Green synthesis and optimization of iron oxide nanoparticles using central composite design as MRI contrast agent","authors":"Yuwvaranni S, Amritta B, Weslen Vedakumari S, Chamundeeswari M","doi":"10.1680/jgrma.23.00089","DOIUrl":"https://doi.org/10.1680/jgrma.23.00089","url":null,"abstract":"Iron nanoparticles (FeNPs) derived from herbal plants are being explored as potential MRI contrast agents due to their biocompatibility and ability for targeted drug delivery. We for the first time have attempted the usage of various novel combinations of leaf extracts like Azadirachta indica, and Piper betel and with two other Ayurvedic herbs extracts such as Asparagus racemosus and Symplocos for an ecofriendly green synthesis of FeNPs. The nanoparticles were coated on nanofibers made from banana pseudo (FENPs-NF) stem to enhance biocompatibility. The synthesis process was optimized using RSM and techniques like UV-Vis, VSM, AAS,FE-SEM, EDAX, and FT-IR was used for Characterization. Haemolytic, immune cell assays, MTT assay and MRI was analyzed. A peak at 325 nm through the UV-Vis spectroscopy, AAS, FE-SEM, EDAX, and FT-IR proved the presence of FeNPs. Haemolytic, immune cell assay was found to be compatible and MTT assay (MCF -7) showed inhibition at 250 µg/ml. The FeNPs and FeNPs-NF showed a good signal loss in MRI analysis at 1.5 Tesla based proving the property of contrast agent nature. Thus, synthesized FeNPs from herbal plant sources may open a new door for its potential application in the biomedical field as a chemical-free and biocompatible MRI contrast agent.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"29 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140625259","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 UV curable rosin-based polyurethane coatings 紫外线固化松香基聚氨酯涂料的制备与性能

IF 1.9 4区材料科学

Green Materials Pub Date : 2024-03-27 DOI: 10.1680/jgrma.23.00136

Jiongchao Li, Hongming Liu, Caili Yu, Jianben Xu, Faai Zhang

引用次数: 0

Effect of phase change microcapsules on the properties of whisker-reinforced phosphogypsum-based composites 相变微胶囊对晶须增强磷石膏基复合材料性能的影响

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-12-14 DOI: 10.1680/jgrma.23.00118

Jingdong Wang, Peng Liu, Dewen Kong, Yuan Li, Yaxin Yang, Yongfa Wang, Mingsheng Chen, Shuangying Yang

{"title":"Effect of phase change microcapsules on the properties of whisker-reinforced phosphogypsum-based composites","authors":"Jingdong Wang, Peng Liu, Dewen Kong, Yuan Li, Yaxin Yang, Yongfa Wang, Mingsheng Chen, Shuangying Yang","doi":"10.1680/jgrma.23.00118","DOIUrl":"https://doi.org/10.1680/jgrma.23.00118","url":null,"abstract":"Phase change energy storage building materials prepared by applying PCMs to building materials have the advantages of both common building materials and PCMs, the composites can help to regulate the indoor temperature, while the introduction of mPCMs technology can make up for the shortcomings of traditional PCMs. Therefore, in this paper, two different mPCMs are blended into the whisker-reinforced β-HPG-based composites to prepare a new lightweight thermal insulation and energy storage building material, which improves the thermal performance of the building material while improving the utilization rate of phosphogypsum to a certain extent. In this study, the mechanical, thermal conductivity and energy storage properties of the new building material were investigated through performance tests and compared with β-HPG-based composites without doped PCMs, The results showed that both PCMs could improve the mechanical strength of the materials. The incorporation of mPCMs increased the thermal conductivity and decreased the water absorption of the composites. In addition, the TG-DSC analysis showed that the addition of mPCMs improved the thermal storage properties of the composites, and the two mPCMs and their composites have good thermal stability and can be used in construction materials.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"34 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138686237","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

Application of edible coating made from blends of VCO nanoemulsion, iota carrageenan, and alginate for pindang fish preservation by using response surface methodology 响应面法研究VCO纳米乳液、角叉菜胶和海藻酸盐复配可食用涂层在品当鱼保鲜中的应用

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-11-28 DOI: 10.1680/jgrma.23.00066

Hana Iswahyuni, Nugraha Edhi Suyatma, Nur Wulandari, Hari Eko Irianto, Fera Roswita Dewi, Nurhayati, Ellya Sinurat, Rodiah Nurbayasari, Giyatmi, Dina Fransiska

{"title":"Application of edible coating made from blends of VCO nanoemulsion, iota carrageenan, and alginate for pindang fish preservation by using response surface methodology","authors":"Hana Iswahyuni, Nugraha Edhi Suyatma, Nur Wulandari, Hari Eko Irianto, Fera Roswita Dewi, Nurhayati, Ellya Sinurat, Rodiah Nurbayasari, Giyatmi, Dina Fransiska","doi":"10.1680/jgrma.23.00066","DOIUrl":"https://doi.org/10.1680/jgrma.23.00066","url":null,"abstract":"This study aims to develop an edible coating based on virgin coconut oil (VCO) nanoemulsion, iota carrageenan and alginate to prolong the shelf life of pindang (mildly salted cooked) fish products. The research involved three stages: material preparation, characterization, and determination of factors and responses for experimental design; parameter optimization to achieve optimal conditions; and application and analysis of pre-and post-coating characteristics of pindang fish. The parameter ranges were 0.5-1.5% for alginate concentration, 0.5-1.5% for iota carrageenan concentration, and 0.5-1.0% for VCO nanoemulsion concentration. The results of this study were an optimized food coating solution that was clear and bright white in colour. Pindang fish coated with this layer showed improved quality in terms of water content (48.46%), weight loss (0.39%), pH (5.84), total volative base (47.01%), salt content (2.9%), appearance (7), texture (7), and slime (7);. At the same time, the total bacterial count remained unchanged (8 log CFU/g), mold count remained unchanged (5 log CFU/g), and the aroma and taste received a score of 6. Thus, this study successfully produced an optimized edible coating that can enhance the quality and extend the shelf life of pindang fish, making it suitable for broader market distribution.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514976","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

Experimental study on the performance of a novel composite phase change energy storage material for clean heating 一种新型清洁加热复合相变储能材料性能的实验研究

IF 1.9 4区材料科学

Green Materials Pub Date : 2023-11-23 DOI: 10.1680/jgrma.23.00028

Qunli Zhang, Tao Liu, Baozhong Wang, Xuanrui Cheng, Wenjing Zhang, Xiaohu Yang

{"title":"Experimental study on the performance of a novel composite phase change energy storage material for clean heating","authors":"Qunli Zhang, Tao Liu, Baozhong Wang, Xuanrui Cheng, Wenjing Zhang, Xiaohu Yang","doi":"10.1680/jgrma.23.00028","DOIUrl":"https://doi.org/10.1680/jgrma.23.00028","url":null,"abstract":"To achieve green and clean energy heating, improve the performance of phase change material energy storage heating systems (PCMEHS), a novel magnesium chloride hexahydrate/expanded graphite/calcium hydroxide composite phase change material (CPCM) was developed. The thermal properties and phase separation characteristics of the CPCM were experimentally characterized. The results show that MgCl2·6H2O/EG CPCM composed of 7.5% EG has good thermal storage performance without affecting the phase change performance. On this basis, the nucleating agent calcium hydroxide was added to further eliminate the supercooling of the material. The thermophysical properties of the ternary CPCM were tested, and the samples were characterized and analyzed from the microstructure. The thermal conductivity of the ternary CPCM is 2.825 W·m−1·K−1, about 4.66 times that of pure MgCl2·6H2O (0.606 W·m−1·K−1), and the supercooling is 0°C. The results of these thermal characteristics show that MgCl2·6H2O/EG/Ca(OH)2 CPCM has great application potential in clean and green energy heating system.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"41 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514977","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