Discussion on the Development of Green Chemistry and Chemical Engineering

Zhang, Yunshen

doi:10.1088/1755-1315/94/1/012136

Cited by 6 publications

(4 citation statements)

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“…Polymeric products need to be degraded after the end of their use when they do not have useful properties. This would reduce the negative impact on environmental health, which is the main idea of green chemistry and chemical engineering [49]. The chemical recycling of thermosets into soluble products is usually carried out by catalysis at high temperatures using pressure to recycle the network [50].…”

Section: Recyclabilitymentioning

confidence: 99%

Photocuring and digital light processing 3D printing of vitrimer composed of 2-hydroxy-2-phenoxypropyl acrylate and acrylated epoxidized soybean oil

Grauželienė¹,

Kazlauskaite²,

Skliutas³

et al. 2023

Express Polym. Lett.

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Vitrimers have gained attention as materials with recyclability, self-healing, and shape memory properties. The use of bio-based monomers for the synthesis of vitrimers is relevant because of the use of an environmentally friendly strategy. In this work, resins based on 2-hydroxy-2-phenoxypropyl acrylate and acrylated epoxidized soybean oil were designed and tested by real-time photorheometry, Fourier transform infrared spectroscopy (FT-IR), and mechanical testing to determine suitability for digital light processing 3D printing. The synthesis of vitrimer that could have good thermal properties and vitrimeric abilities, such as shape memory, self-healing, and recyclability properties, was investigated. Because of this, the vitrimer could repair cracks and defects and could have a complex design of several parts, which also contributes to recyclability and decreases costs. The rigidity and viscosity of the resins were reduced with an increasing amount of 2-hydroxy-2-phenoxypropyl acrylate-based monomer. The resin that has the highest amounts of hydroxyl and ester groups that are beneficial for transesterification reactions was chosen for vitrimer synthesis in order to show vitrimeric abilities such as self-healing, shape memory properties, reprocessability, and recyclability. The synthesized vitrimer was applied to digital light processing 3D printing and showed shape memory with a recovery ratio of 100%, self-healing and reprocessability with an efficiency of 47 and 31% and recyclability properties.

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Section: Recyclabilitymentioning

confidence: 99%

Photocuring and digital light processing 3D printing of vitrimer composed of 2-hydroxy-2-phenoxypropyl acrylate and acrylated epoxidized soybean oil

Grauželienė¹,

Kazlauskaite²,

Skliutas³

et al. 2023

Express Polym. Lett.

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“…Thus, F12 may afford improvements in industrial processes, meeting the green chemistry principle of generating the least amount of waste and wastewater possible. In this manner, pollution and waste generation (Zhang, 2017) are prevented, minimizing the use of hazardous chemicals (Chen et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Processing of cooked marinated chicken breast: Evaluation of the final product and wastewater

Silva

Batistela

Porciuncula

et al. 2023

J Food Process Engineering

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This study aimed to investigate the process of marination of chicken breast, assess the characteristics of the final product (cooked and diced) and determine wastewater generation and composition. Breast fillet samples were marinated, and tumbled at 4 rpm and 540 mmHg for 60 min. Different formulations were prepared by varying the brine (20.15%–9.15% w/w) to chicken breast (79.85%–90.85% w/w) ratio. Wastewater generation decreased from 82.95 to 10.67 m3 t−1 by reducing the proportion of brine used in formulations. Moisture content, protein content, and hardness of final products ranged from 68.97 to 70.43 g 100 g−1, 61.63 to 64.55 g 100 g−1, and 22.52 to 30.06 N, respectively. The standard formulation and that prepared with the lowest brine proportion had similar sensory attributes, indicating that brine reduction is a viable strategy to decrease the volume and organic load of the resulting wastewater, increasing the sustainability of the agroindustrial chain.Practical ApplicationsThe definition of the conditions of tumbling, together with the choice of the best proportion of chicken breast fillet and brine used in the marination of chicken breast fillet, promote the reduction of the volume of wastewater generated by the industry, and, increases its degradability. Moreover, the final product (chicken breast diced and cooked) obtained in the modified process have physical–chemical and sensory properties similar to the conventional product.

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“…The production of the nanomaterials functionalized by biodegradable capping or reducing agents such as vitamins, sugars, or plant wastes with a minimum waste level is among the green chemistry principles [3] . Besides, atom economy plus solvent‐free applications could provide a sustainable solution in the synthesis of nanomaterials in the way of green chemistry which gained great attention in the last years in terms of safety, less energy, and less toxic procedures in the synthesis [4] …”

Section: Introductionmentioning

confidence: 99%

“…[3] Besides, atom economy plus solvent-free applications could provide a sustainable solution in the synthesis of nanomaterials in the way of green chemistry which gained great attention in the last years in terms of safety, less energy, and less toxic procedures in the synthesis. [4] The high catalytic activity of nanomaterials arising from their small particle size thus larger surface area generally causes grudgingly and strong irreversible reactions such as agglomeration. The solution to this problem is the stabilization of nanomaterials with stabilizers, such as surfactants, polymers, carbohydrates, oligonucleotides, proteins, peptides, or plant extracts.…”

Section: Introductionmentioning

confidence: 99%

Green Approaches to Dehydrogenation of DMAB Catalyzed by Starch Stabilized Ru(0), Cu(0) and Ni(0) Nanoparticles in the Absence of a Solvent

Duman¹,

Özhava²

2023

ChemistrySelect

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This work covers the results of a detailed study on the in‐situ formation and catalytic use of metal nanoparticles [Ru(0), Ni(0) and Cu(0)] stabilized on starch, a biodegradable and natural polymer, in the absence of a solvent by aiming to develop a green approach providing sustainable system for hydrogen production from the dehydrogenation of dimethylamine borane (DMAB) at about room temperature, 35.0±0.1 °C. All three metals were well‐stabilized on the surface of starch with a particle size about 10.0 nm and highly active, long‐lived in hydrogen production from the dehydrogenation of DMAB at 35.0±0.1 °C with an extraordinary initial TOF and TTON values of 173 h−1 and 23000 TTON for Ru(0); 130 h−1 and 13000 TTON for Cu(0) and 37 h−1 and 4900 TTON for Ni(0) nanoparticles. Starch stabilized metal(0) nanoparticles could be isolated from the solution and characterized by UV‐vis, XRD, TGA, TEM, SEM, EDX, and XPS.

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Discussion on the Development of Green Chemistry and Chemical Engineering

Cited by 6 publications

References 0 publications

Photocuring and digital light processing 3D printing of vitrimer composed of 2-hydroxy-2-phenoxypropyl acrylate and acrylated epoxidized soybean oil

Photocuring and digital light processing 3D printing of vitrimer composed of 2-hydroxy-2-phenoxypropyl acrylate and acrylated epoxidized soybean oil

Processing of cooked marinated chicken breast: Evaluation of the final product and wastewater

Green Approaches to Dehydrogenation of DMAB Catalyzed by Starch Stabilized Ru(0), Cu(0) and Ni(0) Nanoparticles in the Absence of a Solvent

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