Wen Wang, Mingde Liang, Jianrong Lang, H. I. Mtui, Shi‐Zhong Yang, Bozhong Mu
Bio-based surfactants are increasingly important as an alternative to traditional petro-based surfactants owing to their renewable feedstocks and various applications in many industrial fields such as enhanced oil recovery (EOR). In this study, a new bio-based zwitterionic surfactant with strong interfacial activity at high temperature up to 120 °C was developed through the modification of the methyl oleate derived from renewable non-edible oils. The synthetic route was optimized to promote the conversion rate of quaternization by precisely controlling and timely monitoring the residues of intermediates, and the interfacial activity of the final product was greatly improved after the optimization. This work consolidated our hypothesis that the removal of the residual intermediates of amidation and promotion of the conversion rate of quaternization certainly contributed to enhancing the interfacial activity of the final product, and it will facilitate the design of a sustainable alternative to petro-based chemicals used in EOR.
{"title":"A new bio-based zwitterionic surfactant with strong interfacial activity at high temperature for enhanced oil recovery","authors":"Wen Wang, Mingde Liang, Jianrong Lang, H. I. Mtui, Shi‐Zhong Yang, Bozhong Mu","doi":"10.1680/jgrma.22.00070","DOIUrl":"https://doi.org/10.1680/jgrma.22.00070","url":null,"abstract":"Bio-based surfactants are increasingly important as an alternative to traditional petro-based surfactants owing to their renewable feedstocks and various applications in many industrial fields such as enhanced oil recovery (EOR). In this study, a new bio-based zwitterionic surfactant with strong interfacial activity at high temperature up to 120 °C was developed through the modification of the methyl oleate derived from renewable non-edible oils. The synthetic route was optimized to promote the conversion rate of quaternization by precisely controlling and timely monitoring the residues of intermediates, and the interfacial activity of the final product was greatly improved after the optimization. This work consolidated our hypothesis that the removal of the residual intermediates of amidation and promotion of the conversion rate of quaternization certainly contributed to enhancing the interfacial activity of the final product, and it will facilitate the design of a sustainable alternative to petro-based chemicals used in EOR.","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":"46811913","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}
The development of highly efficient photocatalysts for the degradation of organic dyes and heavy metal ions is necessary to control pollution in the environment and further human health. We report nMo/Zr-MOFs (n=1, 2, 3, and 4, nMZMs) synthesized by a simple hydrothermal method for efficient photocatalytic Cr6+ reduction for the first time. Among all the prepared samples, 2MZMs shows the highest photocatalytic performance with a degradation rate of 94.36% for methylene blue and 91.20% for Cr6+ under visible light irradiation for 120 min and 100 min respectively. The ESR experiments reveal that •O2 − and •OH play a major role. This finding proves great potential for the design and application of MOFs nanomaterials and might bring considerable application prospects for photocatalysis of organic pollutants and heavy metal ions in polluted water.
{"title":"Hydrothermally synthesized Mo/Zr-MOF photocatalyst for promoting the removal of Cr6+ under visible light","authors":"Wenyu Ren, Yi Wang, Jin Wang, Ruixue Sun","doi":"10.1680/jgrma.22.00074","DOIUrl":"https://doi.org/10.1680/jgrma.22.00074","url":null,"abstract":"The development of highly efficient photocatalysts for the degradation of organic dyes and heavy metal ions is necessary to control pollution in the environment and further human health. We report nMo/Zr-MOFs (n=1, 2, 3, and 4, nMZMs) synthesized by a simple hydrothermal method for efficient photocatalytic Cr6+ reduction for the first time. Among all the prepared samples, 2MZMs shows the highest photocatalytic performance with a degradation rate of 94.36% for methylene blue and 91.20% for Cr6+ under visible light irradiation for 120 min and 100 min respectively. The ESR experiments reveal that •O2 − and •OH play a major role. This finding proves great potential for the design and application of MOFs nanomaterials and might bring considerable application prospects for photocatalysis of organic pollutants and heavy metal ions in polluted water.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67485750","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}
S. Wattanasiriwech, M. Naradisorn, D. Wattanasiriwech
Activated carbon has found its key applications in the adsorption of polluted industrial dyes in water. In this work, macadamia husk biochar (MHC) was prepared using a household pyrolysis kiln before being activated with phosphoric acid (H3PO4) to obtain macadamia husk-activated carbon MHAC. A preliminary study was made on the two activation conditions of MHC: H3PO4 (w/v); 1: 1 and 1: 3 for the removal of malachite green (MG) dye. Experimental results analysis disclosed that the adsorption process was highly controlled by time of contact, MHAC particle size, MHAC dosage and initial dye concentration. With the use of the MHAC particle size of 125-202 m, MHAC dosage of 6 g.L−1and 120 and min contact time, the removal efficiency reached >99% at the MG concentration of 40 ppm before being degraded to around 75% at 70-80 ppm MG. Impregnation with Zn(NO3)2.6H2O on the MHAC surface could maintain the removal efficiency to >99% in all initial dye concentrations (40-80 ppm) so the maximum removal capacity was increased to ∼130 mg.g−1.
{"title":"Adsorption of the malachite green dye of macadamia husk-activated carbon prepared using a household pyrolysis kiln","authors":"S. Wattanasiriwech, M. Naradisorn, D. Wattanasiriwech","doi":"10.1680/jgrma.22.00096","DOIUrl":"https://doi.org/10.1680/jgrma.22.00096","url":null,"abstract":"Activated carbon has found its key applications in the adsorption of polluted industrial dyes in water. In this work, macadamia husk biochar (MHC) was prepared using a household pyrolysis kiln before being activated with phosphoric acid (H3PO4) to obtain macadamia husk-activated carbon MHAC. A preliminary study was made on the two activation conditions of MHC: H3PO4 (w/v); 1: 1 and 1: 3 for the removal of malachite green (MG) dye. Experimental results analysis disclosed that the adsorption process was highly controlled by time of contact, MHAC particle size, MHAC dosage and initial dye concentration. With the use of the MHAC particle size of 125-202 m, MHAC dosage of 6 g.L−1and 120 and min contact time, the removal efficiency reached >99% at the MG concentration of 40 ppm before being degraded to around 75% at 70-80 ppm MG. Impregnation with Zn(NO3)2.6H2O on the MHAC surface could maintain the removal efficiency to >99% in all initial dye concentrations (40-80 ppm) so the maximum removal capacity was increased to ∼130 mg.g−1.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47401902","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}
Tuning the chemical functionality of lignocellulosic fiber plays a key role in the development of mechanically strong composites to overcome the leakage of compatibility between composite phases which is a major challenge in multidimensional applications of eco-composites. Herein, the coconut fiber (CF) surface was enriched via four kinds of modification routes including mercerization, amino-functional silane treatment, bio-based epoxy resin sizing, and isocyanate treatment to enhance its interfacial adhesion to thermoplastic polyurethane (TPU) matrix. Tensile strength and Shore-hardness parameters of composites were improved by surface-modified CF inclusions. Thermo-mechanical response of TPU was optimized after CF loadings regardless of treatment type. Composite involving silane-modified CF exhibited the lowest water uptake due to the hydrophobic behavior of the silane layer. The increase in interfacial interaction between the TPU matrix and modified CF was confirmed by SEM investigations. The chemically enriched surface of CF confers the performance of composites thanks to improved adhesion in the TPU-CF interface.
{"title":"Performance enhancement of coir fiber-reinforced elastomeric polyurethane eco-composites via the enrichment of fiber surface using sustainable modifications","authors":"Ümit Tayfun, A. Akar, F. Hacıoğlu, M. Doğan","doi":"10.1680/jgrma.22.00103","DOIUrl":"https://doi.org/10.1680/jgrma.22.00103","url":null,"abstract":"Tuning the chemical functionality of lignocellulosic fiber plays a key role in the development of mechanically strong composites to overcome the leakage of compatibility between composite phases which is a major challenge in multidimensional applications of eco-composites. Herein, the coconut fiber (CF) surface was enriched via four kinds of modification routes including mercerization, amino-functional silane treatment, bio-based epoxy resin sizing, and isocyanate treatment to enhance its interfacial adhesion to thermoplastic polyurethane (TPU) matrix. Tensile strength and Shore-hardness parameters of composites were improved by surface-modified CF inclusions. Thermo-mechanical response of TPU was optimized after CF loadings regardless of treatment type. Composite involving silane-modified CF exhibited the lowest water uptake due to the hydrophobic behavior of the silane layer. The increase in interfacial interaction between the TPU matrix and modified CF was confirmed by SEM investigations. The chemically enriched surface of CF confers the performance of composites thanks to improved adhesion in the TPU-CF interface.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42847123","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}
M. G. D. Guaita, Otávio José de Oliveira, Paulo Rogério Catarini da Silva, L. H. Dall’Antonia, A. Urbano
New technologies have been investigated to replace the use of lithium and cobalt ions, raw materials of the cathode active material of lithium-ion batteries. Among the emerging technologies stands out one that uses sodium (Na+) and iron ions. Sodium iron oxide (NaFeO2) has polymorphism, with only the α phase being active for the reversible deintercalation of sodium ions, so this phase has potential application as an electroactive material in green sodium-ion batteries. The novel synthesis of α-sodium iron oxide through the sol–gel route, which provides a material with small particles and high crystallinity, is described in this work. Through X-ray diffraction and Rietveld refinement, it was found that the initial chelating agent/metals ratio affects the concentration of the α and β phases at the end of the synthetic route. The α-sodium iron oxide, obtained with an appropriate chelating agent/metals ratio, showed high purity and crystallinity. A discharge capacity of approximately 110 mAh/g was achieved when the α-sodium iron oxide electrode, obtained through the sol–gel route, was cycled from 1.00 to 4.00 V against sodium ions/sodium (Na), corresponding to the intercalation of approximately 0.5 sodium ions of the Na1−x FeO2 formula. The success of the synthesis of the α-sodium iron oxide phase can lower the cost and ensure the economic viability of green sodium-ion batteries.
{"title":"New α-NaFeO2 synthesis route for green sodium-ion batteries","authors":"M. G. D. Guaita, Otávio José de Oliveira, Paulo Rogério Catarini da Silva, L. H. Dall’Antonia, A. Urbano","doi":"10.1680/jgrma.21.00050","DOIUrl":"https://doi.org/10.1680/jgrma.21.00050","url":null,"abstract":"New technologies have been investigated to replace the use of lithium and cobalt ions, raw materials of the cathode active material of lithium-ion batteries. Among the emerging technologies stands out one that uses sodium (Na+) and iron ions. Sodium iron oxide (NaFeO2) has polymorphism, with only the α phase being active for the reversible deintercalation of sodium ions, so this phase has potential application as an electroactive material in green sodium-ion batteries. The novel synthesis of α-sodium iron oxide through the sol–gel route, which provides a material with small particles and high crystallinity, is described in this work. Through X-ray diffraction and Rietveld refinement, it was found that the initial chelating agent/metals ratio affects the concentration of the α and β phases at the end of the synthetic route. The α-sodium iron oxide, obtained with an appropriate chelating agent/metals ratio, showed high purity and crystallinity. A discharge capacity of approximately 110 mAh/g was achieved when the α-sodium iron oxide electrode, obtained through the sol–gel route, was cycled from 1.00 to 4.00 V against sodium ions/sodium (Na), corresponding to the intercalation of approximately 0.5 sodium ions of the Na1−x FeO2 formula. The success of the synthesis of the α-sodium iron oxide phase can lower the cost and ensure the economic viability of green sodium-ion batteries.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42916708","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}
Hailemichael O. Yosief, Cheng‐Kung Liu, R. Ashby, G. Strahan, N. Latona, Nusheng Chen
Poly(3-hydroxybutyrate) (PHB) is a well-known member of the polyhydroxyalkanoate family of biopolymers and it has been extensively investigated as an environmentally-benign replacement for petrochemical-based polymers. The practical application of PHB in the biomedical field and in packaging has been limited because of its relatively narrow processing window, high brittleness, and low thermal stability. In this study, a melt flow extrusion plastometer was used to investigate the processability of PHB by evaluating its melt flow rate and the mechanical properties of its monofilament extrudates. The monofilament extrudates were collected after exposure to different processing temperatures (180°C and 190°C) and heating times as well as after blending the biopolymer with different fractions of ground raw wool. The melt flow rate of PHB was not significantly affected when blended with different amounts of wool fiber. However, the melt flow rate increased significantly with the increase in heat duration and temperature. The mechanical properties of the monofilament extrudates from the parental PHB and PHB/wool blends were influenced by the fraction of wool, temperature, and heat duration. The results of this study will be useful in selecting appropriate conditions to produce PHB-based blends/composites with desirable properties for a wide range of applications.
{"title":"Application of extrusion plastometry in poly(3-hydroxybutyrate) (PHB) processing and the effect of ground wool fiber on the mechanical properties of PHB/wool blends","authors":"Hailemichael O. Yosief, Cheng‐Kung Liu, R. Ashby, G. Strahan, N. Latona, Nusheng Chen","doi":"10.1680/jgrma.22.00026","DOIUrl":"https://doi.org/10.1680/jgrma.22.00026","url":null,"abstract":"Poly(3-hydroxybutyrate) (PHB) is a well-known member of the polyhydroxyalkanoate family of biopolymers and it has been extensively investigated as an environmentally-benign replacement for petrochemical-based polymers. The practical application of PHB in the biomedical field and in packaging has been limited because of its relatively narrow processing window, high brittleness, and low thermal stability. In this study, a melt flow extrusion plastometer was used to investigate the processability of PHB by evaluating its melt flow rate and the mechanical properties of its monofilament extrudates. The monofilament extrudates were collected after exposure to different processing temperatures (180°C and 190°C) and heating times as well as after blending the biopolymer with different fractions of ground raw wool. The melt flow rate of PHB was not significantly affected when blended with different amounts of wool fiber. However, the melt flow rate increased significantly with the increase in heat duration and temperature. The mechanical properties of the monofilament extrudates from the parental PHB and PHB/wool blends were influenced by the fraction of wool, temperature, and heat duration. The results of this study will be useful in selecting appropriate conditions to produce PHB-based blends/composites with desirable properties for a wide range of applications.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44428227","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}
N-methyl imines, as simple Schiff bases, could be prepared using a more sustainable and greener system, including methyl amine, 33 wt. % solution in absolute ethanol and poly(N-vinylimidazole) (PVIm) at room temperature within 45-60 min. PVIm is a biocompatible, biodegradable, and water-soluble synthetic solid functional polymer. It was indicated that PVIm can act as a multi-task reagent in this reaction including (a) reducing activation energy and stabilizing the transition states through hydrogen bond acceptor sites and low acidity of C(2)–H, (b) dehydrating activity through trapping of the released water molecular as association phase. Inexperienced chemists can handle it easily because it is solid and less toxic than a conventional catalyst, i.e., piperidine, pyridine, or metal- or halogen-containing salts. In addition, ethanol and PVIm could be recycled and reused in the next runs without any further purification. The regenerated PVIm demonstrated stable activity after several recycle runs. No changes were detected in its chemical structure, approved by FTIR and NMR spectra analyses.
{"title":"Greener and scalable synthesis of N-methyl imines using poly(N-vinylimidazole), a more sustainable functional polymer","authors":"Peyman Mihankhah, N. G. Khaligh","doi":"10.1680/jgrma.22.00068","DOIUrl":"https://doi.org/10.1680/jgrma.22.00068","url":null,"abstract":"N-methyl imines, as simple Schiff bases, could be prepared using a more sustainable and greener system, including methyl amine, 33 wt. % solution in absolute ethanol and poly(N-vinylimidazole) (PVIm) at room temperature within 45-60 min. PVIm is a biocompatible, biodegradable, and water-soluble synthetic solid functional polymer. It was indicated that PVIm can act as a multi-task reagent in this reaction including (a) reducing activation energy and stabilizing the transition states through hydrogen bond acceptor sites and low acidity of C(2)–H, (b) dehydrating activity through trapping of the released water molecular as association phase. Inexperienced chemists can handle it easily because it is solid and less toxic than a conventional catalyst, i.e., piperidine, pyridine, or metal- or halogen-containing salts. In addition, ethanol and PVIm could be recycled and reused in the next runs without any further purification. The regenerated PVIm demonstrated stable activity after several recycle runs. No changes were detected in its chemical structure, approved by FTIR and NMR spectra analyses.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44050424","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}
Yufeng Ma, Yuan Ji, Jiale Zhang, Ye Sha, P. Jia, Yonghong Zhou
Pressure sensitive adhesive (PSA) is a kind of viscoelastic material with viscous properties of liquid and elastic properties of solid, which can adhere to the surfaces of various substrate only under light pressure without phase change. PSAs derived from petroleum-based materials are generally non-biodegradable and disposable, therefore a large amount of waste is generated from PSA products. Preparation of PSAs using renewable vegetable oil as raw materials is an effective way to reduce dependence on petrochemical resources and environmental pollution. This paper summarized the recent progress of vegetable oil-based PSAs. Vegetable oil based PSAs mainly include epoxy resin, acrylic resin, fatty acid derivatives, polyester and polyurethane according to chemical structure of vegetable oil-based polymers. The design ideas and modification methods of vegetable oil-based PSAs were introduced, including the development of functional vegetable oil monomers and the optimization of polymer structure, so as to provide theory and reference for the design and development of new bio-based PSAs.
{"title":"Research advances of vegetable oil based pressure sensitive adhesives","authors":"Yufeng Ma, Yuan Ji, Jiale Zhang, Ye Sha, P. Jia, Yonghong Zhou","doi":"10.1680/jgrma.22.00061","DOIUrl":"https://doi.org/10.1680/jgrma.22.00061","url":null,"abstract":"Pressure sensitive adhesive (PSA) is a kind of viscoelastic material with viscous properties of liquid and elastic properties of solid, which can adhere to the surfaces of various substrate only under light pressure without phase change. PSAs derived from petroleum-based materials are generally non-biodegradable and disposable, therefore a large amount of waste is generated from PSA products. Preparation of PSAs using renewable vegetable oil as raw materials is an effective way to reduce dependence on petrochemical resources and environmental pollution. This paper summarized the recent progress of vegetable oil-based PSAs. Vegetable oil based PSAs mainly include epoxy resin, acrylic resin, fatty acid derivatives, polyester and polyurethane according to chemical structure of vegetable oil-based polymers. The design ideas and modification methods of vegetable oil-based PSAs were introduced, including the development of functional vegetable oil monomers and the optimization of polymer structure, so as to provide theory and reference for the design and development of new bio-based PSAs.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46796703","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}
D. Lascano, Cristobal Aljaro, E. Fages, S. Rojas‐Lema, J. Ivorra‐Martinez, N. Montanes
The concern that has arisen in recent years over the excessive use of oil-based materials has made the development of new materials with low environmental impact imminent, in this context. In this study, environmentally friendly composites were obtained with a thermoplastic polylactide matrix (PLA), and jute fibers (fabrics and non-woven mats) as reinforcement. PLA/jute bio-composites were manufactured by thermocompression. The effect of the amount of jute fibers reinforcement (in the 30-50 wt.% range) on the tensile and flexural properties of these composites was analyzed, and the fiber-matrix interaction was assessed by scanning electron microscopy (SEM). The results show that thermocompression moulding is a simple technique to obtain high environmental efficiency bio-composites with high reinforcement loading (up to 50 wt.%). As expected, the tensile properties are directly related to the amount of fiber loading, as well as the directionality these fibers have in the composite. Mechanical performance is also highly dependent on fiber-matrix interactions. These bio-composites could be attractive as lightweight interior panels in automotive industry, case/covers in electric-electronics applications, shovels’ components in the wind energy industry, among others, due to their balanced mechanical properties, and the rather complex shapes that could be obtained by thermocompression.
{"title":"A comparative study of mechanical properties of polylactide bio-composites with woven and non-woven jute reinforcements","authors":"D. Lascano, Cristobal Aljaro, E. Fages, S. Rojas‐Lema, J. Ivorra‐Martinez, N. Montanes","doi":"10.1680/jgrma.21.00060","DOIUrl":"https://doi.org/10.1680/jgrma.21.00060","url":null,"abstract":"The concern that has arisen in recent years over the excessive use of oil-based materials has made the development of new materials with low environmental impact imminent, in this context. In this study, environmentally friendly composites were obtained with a thermoplastic polylactide matrix (PLA), and jute fibers (fabrics and non-woven mats) as reinforcement. PLA/jute bio-composites were manufactured by thermocompression. The effect of the amount of jute fibers reinforcement (in the 30-50 wt.% range) on the tensile and flexural properties of these composites was analyzed, and the fiber-matrix interaction was assessed by scanning electron microscopy (SEM). The results show that thermocompression moulding is a simple technique to obtain high environmental efficiency bio-composites with high reinforcement loading (up to 50 wt.%). As expected, the tensile properties are directly related to the amount of fiber loading, as well as the directionality these fibers have in the composite. Mechanical performance is also highly dependent on fiber-matrix interactions. These bio-composites could be attractive as lightweight interior panels in automotive industry, case/covers in electric-electronics applications, shovels’ components in the wind energy industry, among others, due to their balanced mechanical properties, and the rather complex shapes that could be obtained by thermocompression.","PeriodicalId":12929,"journal":{"name":"Green Materials","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48268786","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}
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