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Khalaj M, Kamali M, Aminabhavi TM, Costa MEV, Dewil R, Appels L, Capela I. Sustainability insights into the synthesis of engineered nanomaterials - Problem formulation and considerations. ENVIRONMENTAL RESEARCH 2023; 220:115249. [PMID: 36632884 DOI: 10.1016/j.envres.2023.115249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/29/2022] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
Engineered nanomaterials (ENMs) have been introduced into the market for a wide range of applications. As per the literature review, the fabrication of new generations of ENMs is starting to comply with environmental, economic, and social criteria in addition to technical aspects to meet sustainability criteria. At this stage, identification of the appropriate criteria for the synthesis of ENMs is critical because the technologies already developed at the lab scales are being currently transferred to pilot and full scales. Hence, the development of scientific-based methodologies to identify, screen, and prioritize the involved criteria is highly necessary. In the present manuscript, a fuzzy-Delphi methodology is adopted to identify the main criteria and sub-criteria encompassing the sustainable fabrication of ENMs, and to explore the "degree of consensus" among the experts on the relative importance of the mentioned criteria. The "health and safety risks" respecting the equipment and the materials, solvent used, and availability of "green experts" were identified as the most critical criteria. Furthermore, although all the criteria were identified as being important, some criteria, such as "solvent" and "raw materials cost", raised a lower degree of consensus, indicating that various "degrees of uncertainties" still exist regarding the level of importance of the studied criteria.
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Affiliation(s)
- Mohammadreza Khalaj
- Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM,University of Aveiro, 3810-193, Aveiro, Portugal; Department of Materials and Ceramics Engineering, Aveiro Institute of Materials, CICECO, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Mohammadreza Kamali
- Center for Environmental and Marine Studies, CESAM, University of Aveiro, 3810-193, Aveiro, Portugal; KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860, Sint-Katelijne-Waver, Belgium
| | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, 580 031, 580 031, India; Department of Chemistry, Karnatak University, Dharwad, 580 003, India; University Center for Research & Development (UCRO), Chandigarh University, Gharuan, Mohali, Punjab, 140 413, India.
| | - M Elisabete V Costa
- Department of Materials and Ceramics Engineering, Aveiro Institute of Materials, CICECO, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Raf Dewil
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860, Sint-Katelijne-Waver, Belgium
| | - Lise Appels
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, J. De Nayerlaan 5, 2860, Sint-Katelijne-Waver, Belgium
| | - Isabel Capela
- Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM,University of Aveiro, 3810-193, Aveiro, Portugal
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Tian J, Li C, Qi X, Xian G. Hygrothermal aging behavior and mechanism of multi-filler reinforced epoxy composites for steel structure coatings. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Samir M, Geioushy RA, El-Sherbiny S, Fouad OA. Enhancing the anti-ageing, antimicrobial activity and mechanical properties of surface-coated paper by Ag@TiO 2-modified nanopigments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:72515-72527. [PMID: 35610452 PMCID: PMC9129063 DOI: 10.1007/s11356-022-20935-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
In this work, the effect of using Ag-doped TiO2 nanopigments on optical, mechanical and antimicrobial properties of coated paper was explored. Furthermore, the long-term antimicrobial activity of the coated paper was examined for up to 25 years. Titanium dioxide (TiO2) nanoparticles have been synthesized and doped with different percentages of Ag nanoparticles (Ag NPs) using a simple wet chemical approach. The Ag@TiO2 modified nanopigments were in the form of nanorods with an average size of about 20 nm as observed from TEM images. Increasing Ag content from 0.01 to 1.0% showed an increase in the mechanical properties of coated paper in terms of tensile, stretching, tensile energy absorption and burst while preserving the optical properties. Moreover, the antimicrobial inhibition activity increased with increasing the Ag content. The 1% Ag@TiO2 showed a long-lasting antimicrobial effect against Staphylococcus aureus (S. aureus) Gram-positive bacteria even after 25 years of ageing (93.4% inhibition). Investigation of reactive oxygen species (ROS) generation and reaction mechanism of antimicrobial activity over Ag/TiO2 under visible light is proposed. These results suggest that Ag/TiO2 NPs can be potentially used as a disinfection coating for paper and improving its mechanical properties.
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Affiliation(s)
- Marwa Samir
- Paper and Printing Laboratory, Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt
| | - Ramadan A Geioushy
- Nanostructured Materials and Nanotechnology Department, Advanced Materials Institute, Central Metallurgical R & D Institute (CMRDI), P.O. Box, 87, Helwan, 11421, Cairo, Egypt
| | - Samya El-Sherbiny
- Paper and Printing Laboratory, Chemistry Department, Faculty of Science, Helwan University, Helwan, Egypt
| | - Osama A Fouad
- Nanostructured Materials and Nanotechnology Department, Advanced Materials Institute, Central Metallurgical R & D Institute (CMRDI), P.O. Box, 87, Helwan, 11421, Cairo, Egypt.
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Elsawy M, Faheim AA, Salem SS, Owda M, Abd El‐Wahab ZH, Abd El‐Wahab H. Cu (II), Zn (II), and Ce (III) metal complexes as antimicrobial pigments for surface coating and flexographic ink. Appl Organomet Chem 2021; 35. [DOI: 10.1002/aoc.6196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/28/2021] [Indexed: 09/01/2023]
Affiliation(s)
- M.M. Elsawy
- Chemistry Department, Faculty of Science (Girls) Al‐Azhar University Cairo Egypt
| | - Abeer A. Faheim
- Chemistry Department, Faculty of Science (Girls) Al‐Azhar University Cairo Egypt
| | - Salem S. Salem
- Botany and Microbiology Department, Faculty of Science (Boys) Al‐Azhar University Cairo Egypt
| | - M.E. Owda
- Chemistry Department, Faculty of Science (Boys) Al‐Azhar University Cairo Egypt
| | | | - H. Abd El‐Wahab
- Chemistry Department, Faculty of Science (Boys) Al‐Azhar University Cairo Egypt
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H. AEW, Abd El-Monem F, M.A. N, A.I. H, Nashy ESH, L. L. Novel tanning agent based on silica-nanocomposite emulsion polymers. PIGMENT & RESIN TECHNOLOGY 2020; 49:283-294. [DOI: 10.1108/prt-12-2019-0113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Purpose
The purpose of this paper is devoted to application of the emulsion polymer of poly(methyl methacrylate-co-butyl acrylate) prepared with in situ nano-silica as a novel tanning agent of hide to partly or totally replace chrome salt and to improve physical, thermal and mechanical properties of the tanned leather and to reduce the environmental impact of chrome tanning effluent.
Design/methodology/approach
Polymer/nano-silica hybrid emulsions were prepared via in situ seed emulsion polymerisation. The prepared polymers were characterised for solid content, molecular weight, viscosity, drying time, minimum film-forming temperature (MFFT) and microstructures (via transmission electron microscopy). The mechanical, thermal and surface morphological (by scanning electron microscope) properties of the treated samples were also investigated. The influences of the increase in the content of organic nano-silica on the properties of the tanned leather are discussed.
Findings
It was found that the viscosity, the particle size and the solid content of the prepared polymers increased as the content of the nano-silica increased while gloss and drying time of the resulting polymer film decreased. Tanning buffalo hide by Polymer F (containing a high content of nano-silica) gave desirable properties in terms of tensile strength, thermal stability and shrinkage temperature.
Research limitations/implications
This paper discusses the preparation and the characterisation of emulsion polymers with in situ nano-silica and their application in tanning process to enhance and improve the leather quality, as well as reduce the use of chrome tanning materials and consequently chrome tanning waste.
Practical implications
The tanned leather showed an improvement of physico-mechanical properties and enhancement of thermal stability. Furthermore, the tanned leather has uniform colour, softness and firmness of grain. All these promising results provide evidence to support the applicability of the prepared co-polymer/nano-silica emulsions as an efficient tanning agent that also provides lubricating properties for leather.
Originality/value
Since May 2015, REACH Annex XVII restricts Cr(VI) in leather articles or leather parts of articles that come into contact with skin to a concentration of less than 3 mg/kg. Cases of discovery of Cr(VI) in leather papers have been reported by the European rapid alert system on dangerous consumer products (RAPEX). The emulsion poly (methyl methacrylate-co-butyl acrylate) with in situ nano-silica that has been developed via the study reported in this paper is one of the better technologies for the reduction of chromium ratio used in tanning industry.
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Arman Kandirmaz E, Birtane H, Beyler Cigil A, Ozcan A. pH‐controlled lavender oil capsulation with ABA‐type block copolymer and usage in paper coating. FLAVOUR FRAG J 2019. [DOI: 10.1002/ffj.3549] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Emine Arman Kandirmaz
- Department of Printing Technologies School of Applied Sciences Marmara University Istanbul Turkey
| | - Hatice Birtane
- Department of Chemistry Faculty of Arts and Sciences Marmara University Istanbul Turkey
| | - Aslı Beyler Cigil
- Department of Chemistry and Chemical Process Technology Amasya University Technical Sciences Vocational School Amasya Turkey
| | - Arif Ozcan
- Department of Printing Technologies School of Applied Sciences Marmara University Istanbul Turkey
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Naser AM, Abd El - Wahab H, Moustafa El Nady MAEF, E.A. Mostafa A, Lin L, Sakr AG. Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer. PIGMENT & RESIN TECHNOLOGY 2019; 48:363-374. [DOI: 10.1108/prt-08-2018-0080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Purpose
This paper aims to investigate the best methods of utilisation of reclaimed asphalt pavements (RAP) in Egypt, to determine the effect of using 100% RAP instead of using virgin aggregates and asphalt; investigate the effect of thermoplastic elastomer polymer as asphalt modifier; and also improve the mechanical and physical characteristics and consequently improving the quality of asphalt paving, increasing service life of asphalt-paving and reducing costs.
Design/methodology/approach
Nano acrylate terpolymers were prepared with different % (Wt.) of and were characterised by Fourier transforms infrared (FTIR), for molecular weight (Mw), by thermo gravimetric analysis (TGA) and by transmission electron microscopy (TEM). A 4% (Wt.) of the prepared nanoemulsion terpolymer was mixed with virgin asphalt as a polymer modifier, to improve and reuse of the RAP. The modified binder was tested. The tests conducted include penetration, kinematic viscosity, softening point and specific gravity. Application of Marshall mix design types; hot mix asphalt (HMA), warm mix asphalt (WMA) and cold in place recycled (CIR). Four different mix designs used; control mix contained virgin asphalt by HMA, and the other three mix designs were polymermodified asphalt sample by HMA, WMA and CIR.
Findings
The research results showed that using 4 Wt.% of the prepared nanoemulsion terpolymer to produce hot mix asphalt (HMA) and warm mix asphalt (WMA) achieved higher stability compared to the control mix and cold in place recycled (CIR).
Research limitations/implications
This paper discusses the preparation and the characterisation of nanoemulsion and its application in RAPs to enhance and improve the RAP quality.
Practical implications
Nano-acrylate terpolymer can be used as a new polymer to modify asphalt to achieve the required specifications for RAP.
Originality/value
According to the most recent surveys, Europe produced 265 tonnes of asphalt for road applications in 2014, while the amount of available RAP was more than 50 tonnes. The use of RAP in new blended mixes reduces the need of neat asphalt, making RAP recycling economically attractive.
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El-Sherif HM, Nasser AM, Hussin AI, Abd El-Wahab H, Ghazy MBM, Elsayed AE. Tailoring of mechanical properties and printability of coated recycled papers. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-018-2515-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Uzoh CF, Onukwuli OD. Self-cured Alkyd Resin Using Non-Drying Avocado Seed Oil as a Material of Regenerative Resource. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- C. F. Uzoh
- Chemical Engineering Department; Faculty of Engineering, Nnamdi Azikiwe University; Awka Nigeria
| | - O. D. Onukwuli
- Chemical Engineering Department; Faculty of Engineering, Nnamdi Azikiwe University; Awka Nigeria
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Kausar A. Polymer coating technology for high performance applications: Fundamentals and advances. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2018. [DOI: 10.1080/10601325.2018.1453266] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Ayesha Kausar
- School of Natural Sciences, National University of Sciences and Technology (NUST), Islamabad, Pakistan
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