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Pappa CP, Cailotto S, Gigli M, Crestini C, Triantafyllidis KS. Kraft (Nano)Lignin as Reactive Additive in Epoxy Polymer Bio-Composites. Polymers (Basel) 2024; 16:553. [PMID: 38399931 PMCID: PMC10893208 DOI: 10.3390/polym16040553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/27/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
The demand for high-performance bio-based materials towards achieving more sustainable manufacturing and circular economy models is growing significantly. Kraft lignin (KL) is an abundant and highly functional aromatic/phenolic biopolymer, being the main side product of the pulp and paper industry, as well as of the more recent 2nd generation biorefineries. In this study, KL was incorporated into a glassy epoxy system based on the diglycidyl ether of bisphenol A (DGEBA) and an amine curing agent (Jeffamine D-230), being utilized as partial replacement of the curing agent and the DGEBA prepolymer or as a reactive additive. A D-230 replacement by pristine (unmodified) KL of up to 14 wt.% was achieved while KL-epoxy composites with up to 30 wt.% KL exhibited similar thermo-mechanical properties and substantially enhanced antioxidant properties compared to the neat epoxy polymer. Additionally, the effect of the KL particle size was investigated. Ball-milled kraft lignin (BMKL, 10 μm) and nano-lignin (NLH, 220 nm) were, respectively, obtained after ball milling and ultrasonication and were studied as additives in the same epoxy system. Significantly improved dispersion and thermo-mechanical properties were obtained, mainly with nano-lignin, which exhibited fully transparent lignin-epoxy composites with higher tensile strength, storage modulus and glass transition temperature, even at 30 wt.% loadings. Lastly, KL lignin was glycidylized (GKL) and utilized as a bio-based epoxy prepolymer, achieving up to 38 wt.% replacement of fossil-based DGEBA. The GKL composites exhibited improved thermo-mechanical properties and transparency. All lignins were extensively characterized using NMR, TGA, GPC, and DLS techniques to correlate and justify the epoxy polymer characterization results.
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Affiliation(s)
- Christina P. Pappa
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Simone Cailotto
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30170 Venice Mestre, Italy (C.C.)
| | - Matteo Gigli
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30170 Venice Mestre, Italy (C.C.)
| | - Claudia Crestini
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30170 Venice Mestre, Italy (C.C.)
| | - Konstantinos S. Triantafyllidis
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Center for Interdisciplinary Research and Innovation (CIRI-AUTH), 57001 Thessaloniki, Greece
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Eco-Friendly Tannin-Based Non-Isocyanate Polyurethane Resins for the Modification of Ramie (Boehmeria nivea L.) Fibers. Polymers (Basel) 2023; 15:polym15061492. [PMID: 36987272 PMCID: PMC10059955 DOI: 10.3390/polym15061492] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/10/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
This study aimed to develop tannin-based non-isocyanate polyurethane (tannin-Bio-NIPU) and tannin-based polyurethane (tannin-Bio-PU) resins for the impregnation of ramie fibers (Boehmeria nivea L.) and investigate their mechanical and thermal properties. The reaction between the tannin extract, dimethyl carbonate, and hexamethylene diamine produced the tannin-Bio-NIPU resin, while the tannin-Bio-PU was made with polymeric diphenylmethane diisocyanate (pMDI). Two types of ramie fiber were used: natural ramie without pre-treatment (RN) and with pre-treatment (RH). They were impregnated in a vacuum chamber with tannin-based Bio-PU resins for 60 min at 25 °C under 50 kPa. The yield of the tannin extract produced was 26.43 ± 1.36%. Fourier-transform infrared (FTIR) spectroscopy showed that both resin types produced urethane (-NCO) groups. The viscosity and cohesion strength of tannin-Bio-NIPU (20.35 mPa·s and 5.08 Pa) were lower than those of tannin-Bio-PU (42.70 mPa·s and 10.67 Pa). The RN fiber type (18.9% residue) was more thermally stable than RH (7.3% residue). The impregnation process with both resins could improve the ramie fibers’ thermal stability and mechanical strength. The highest thermal stability was found in RN impregnated with the tannin-Bio-PU resin (30.5% residue). The highest tensile strength was determined in the tannin-Bio-NIPU RN of 451.3 MPa. The tannin-Bio-PU resin gave the highest MOE for both fiber types (RN of 13.5 GPa and RH of 11.7 GPa) compared to the tannin-Bio-NIPU resin.
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Bansal SA, Singh AP, Singh S, Kumar S. Bisphenol-A-Carbon Nanotube Nanocomposite: Interfacial DFT Prediction and Experimental Strength Testing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1051-1060. [PMID: 36631941 DOI: 10.1021/acs.langmuir.2c02723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Epoxies, their derivatives, and composites, due to superior specific strength, are preferred for many potential applications in the field of automobiles, aircraft, bonding of structures, protective coatings, water filtration, etc. As structural members in automobiles and aircraft, the epoxy-based components are exposed to various static/dynamic mechanical loading conditions during their service life. The interfacial interactions, between the matrix and reinforcement, greatly affect the final properties of the composites. The present study demonstrates that the solvent used for the preparation of the composite can also contribute toward interfacial interactions. Present research systematically finds out a suitable solvent (acetone) and reinforcement type [multi-walled carbon nanotube (CNT)] for epoxy [bisphenol-A (BPA)] nanocomposites. Dynamic and static strengths of the as-prepared epoxy-CNT nanocomposites were carefully investigated. Well dispersed CNTs in acetone were mixed with an ester of BPA under constant magnetic stirring conditions. Samples of tablet shape were prepared for testing static and dynamic performance of the composite using a nano-indentation technique. Considerable enhancement by 55 and 22% in the static elastic modulus and hardness of BPA-CNT composites, respectively, was observed (compared with that of pristine BPA). The storage modulus and tan-delta of the nanocomposites were also improved by 14 and 46%, respectively. Improved static and dynamic performance, reported in this work, significantly enhances the scope of utilization of BPA-CNT-based nanocomposites under severe static and dynamic loading conditions simultaneously. Static and dynamical analysis of CNT-reinforced epoxy provides more realistic understanding of the mechanical performance of the nanocomposite. Density functional theory (using QuantumATK software) simulations were performed to investigate and identify the alterations in the atomic morphology of CNTs during interfacial interaction with the acetone molecule and epoxy matrix. The calculations predicted that CNTs with mild defects as compared to pristine CNTs were better suited for synthesis of the nanocomposite and also assisted in a homogeneous distribution of CNTs in BPA without aggregation (with acetone as the solvent). Furthermore, structural changes in CNTs after treatment with BPA and the curing agent and the role of defects are studied in detail.
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Affiliation(s)
- Suneev Anil Bansal
- Department of Mechanical Engineering, Bharat Institute of Engineering and Technology, Mangalpally, Ibrahimpatnam, Hyderabad501510, Telangana, India
- Department of Mechanical Engineering, MAIT, Maharaja Agrasen University, Himachal Pradesh174103, India
| | - Amrinder Pal Singh
- Department of Mechanical Engineering, University Institute of Engineering and Technology (UIET), Panjab University, Chandigarh160014, India
| | - Sukhbir Singh
- Department of Applied Science, University Institute of Engineering and Technology (UIET), Panjab University, Chandigarh160014, India
| | - Suresh Kumar
- Department of Applied Science, University Institute of Engineering and Technology (UIET), Panjab University, Chandigarh160014, India
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Quinsaat JEQ, Feghali E, van de Pas DJ, Vendamme R, Torr KM. Preparation of Biobased Nonisocyanate Polyurethane/Epoxy Thermoset Materials Using Depolymerized Native Lignin. Biomacromolecules 2022; 23:4562-4573. [PMID: 36224101 DOI: 10.1021/acs.biomac.2c00706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polyurethane polymers are found in a wide range of material applications. However, the toxic nature of isocyanates used in their formulation is a major concern; hence, more environmentally friendly alternatives are of high interest in the search for new sustainable polymer materials. In this work, we present the preparation of isocyanate-free polyurethane/epoxy hybrid thermosets with a high biobased content (85-90 wt %). The isocyanate-free polyurethanes were based on polyhydroxyurethanes (PHUs) prepared from depolymerized native lignin, which we refer to as lignin hydrogenolysis oil (LHO). The LHO was functionalized with epichlorohydrin to yield the epoxidized structure (LHO-GE), which was in turn reacted with CO2 to form the cyclocarbonated species (LHO-CC). Blends of the LHO-CC and glycerol diglycidyl ether (GDGE) were cured to produce hybrid PHU/epoxy (LHO-CC/GDGE) thermosets. Thermosetting materials with flexural moduli of 4.5 GPa and flexural strengths of 160 MPa were produced by optimizing the mass ratio of the two main components and the triamine hardener. These novel biobased hybrid materials outperformed the corresponding epoxy-only thermosets and comparable hybrid PHU/epoxy materials produced from petrochemicals.
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Affiliation(s)
| | - Elias Feghali
- Scion, 49 Sala Street, Private Bag 3020, Rotorua3046, New Zealand.,Chemical Engineering Program, Notre Dame University-Louaize, Zouk Mosbeh1211, Lebanon.,Sustainable Polymer Technologies (SPOT) Team, Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, Mol2400, Belgium
| | | | - Richard Vendamme
- Sustainable Polymer Technologies (SPOT) Team, Flemish Institute for Technological Research (Vito N.V.), Boeretang 200, Mol2400, Belgium.,Department of Materials and Chemistry, Physical Chemistry and Polymer Science, Vrije Universiteit Brussel, Pleinlaan 2, BrusselsB-1050, Belgium
| | - Kirk M Torr
- Scion, 49 Sala Street, Private Bag 3020, Rotorua3046, New Zealand
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Shah AV, Singh A, Sabyasachi Mohanty S, Kumar Srivastava V, Varjani S. Organic solid waste: Biorefinery approach as a sustainable strategy in circular bioeconomy. BIORESOURCE TECHNOLOGY 2022; 349:126835. [PMID: 35150857 DOI: 10.1016/j.biortech.2022.126835] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
Waste generation is associated with numerous environmental consequences, making it a point of discussion in the environmental arena. Efforts have been made around the world to develop a systematic management approach coupled with a sustainable treatment technology to maximize resource utilization of organic solid waste. Biorefineries and bio-based products play a critical role in lowering total emissions and supporting energy systems. However, economic viability of biorefineries, on the other hand, is a stumbling hurdle to their commercialization. This communication provides a thorough study of the concept of biorefinery in waste management, as well as technological advancements in this field. In addition, the notion of techno-economic assessment, as well as challenges and future prospects have been covered. To find the most technologically and economically viable solution, further techno-economic study to the new context is required. Overall, this communication would assist decision-makers in identifying environmentally appropriate biorefinery solutions ahead of time.
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Affiliation(s)
- Anil V Shah
- Gujarat Pollution Control Board, Gandhinagar 382 010, Gujarat, India; Sankalchand Patel Vidyadham, Sankalchand Patel University, Visnagar 384 315, Gujarat, India
| | - Aditi Singh
- Gujarat Pollution Control Board, Gandhinagar 382 010, Gujarat, India; Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Swayansu Sabyasachi Mohanty
- Gujarat Pollution Control Board, Gandhinagar 382 010, Gujarat, India; Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Vijay Kumar Srivastava
- Sankalchand Patel Vidyadham, Sankalchand Patel University, Visnagar 384 315, Gujarat, India
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar 382 010, Gujarat, India; Sankalchand Patel Vidyadham, Sankalchand Patel University, Visnagar 384 315, Gujarat, India.
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Ushimaru K, Morita T, Watanabe R, Fukuoka T. Biobased and mechanically stiff lignosulfonate/cationic-polyelectrolyte/sugar complexes with coexisting ionic and covalent crosslinks. Polym J 2021. [DOI: 10.1038/s41428-021-00501-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Preparation of green waterborne polyurethane with improved hydrolysis repellency from CO2 derived amino-alcohol. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109571] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Karami Z, Kabiri K, Zohuriaan-Mehr MJ. Non-isocyanate polyurethane thermoset based on a bio-resourced star-shaped epoxy macromonomer in comparison with a cyclocarbonate fossil-based epoxy resin: A preliminary study on thermo-mechanical and antibacterial properties. J CO2 UTIL 2019. [DOI: 10.1016/j.jcou.2019.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zolghadr M, Shakeri A, Zohuriaan‐Mehr MJ, Salimi A. Self‐healing semi‐IPN materials from epoxy resin by solvent‐free furan–maleimide Diels–Alder polymerization. J Appl Polym Sci 2019. [DOI: 10.1002/app.48015] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Mohsen Zolghadr
- School of ChemistryUniversity of Tehran, Alborz Campus P.O. Box 14155‐6619 Tehran Iran
| | - Alireza Shakeri
- School of Chemistry, College of ScienceUniversity of Tehran P.O. Box 14155‐6619 Tehran Iran
| | - Mohammad Jalal Zohuriaan‐Mehr
- Biobased Monomers and Polymers Division (BIOBASED Division)Iran Polymer and Petrochemical Institute (IPPI) P.O. Box 14965‐115 Tehran Iran
| | - Ali Salimi
- Adhesive and Resin DepartmentIran Polymer and Petrochemical Institute (IPPI) P.O. Box 14965‐115 Tehran Iran
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Yadav N, Seidi F, Crespy D, D'Elia V. Polymers Based on Cyclic Carbonates as Trait d'Union Between Polymer Chemistry and Sustainable CO 2 Utilization. CHEMSUSCHEM 2019; 12:724-754. [PMID: 30565849 DOI: 10.1002/cssc.201802770] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/14/2018] [Indexed: 06/09/2023]
Abstract
Given the large amount of anthropogenic CO2 emissions, it is advantageous to use CO2 as feedstock for the fabrication of everyday products, such as fuels and materials. An attractive way to use CO2 in the synthesis of polymers is by the formation of five-membered cyclic organic carbonate monomers (5CCs). The sustainability of this synthetic approach is increased by using scaffolds prepared from renewable resources. Indeed, recent years have seen the rise of various types of carbonate syntheses and applications. 5CC monomers are often polymerized with diamines to yield polyhydroxyurethanes (PHU). Foams are developed from this type of polymers; moreover, the additional hydroxyl groups in PHU, absent in classical polyurethanes, lead to coatings with excellent adhesive properties. Furthermore, carbonate groups in polymers offer the possibility of post-functionalization, such as curing reactions under mild conditions. Finally, the polarity of carbonate groups is remarkably high, so polymers with carbonates side-chains can be used as polymer electrolytes in batteries or as conductive membranes. The target of this Review is to highlight the multiple opportunities offered by polymers prepared from and/or containing 5CCs. Firstly, the preparation of several classes of 5CCs is discussed with special focus on the sustainability of the synthetic routes. Thereafter, specific classes of polymers are discussed for which the use and/or presence of carbonate moieties is crucial to impart the targeted properties (foams, adhesives, polymers for energy applications, and other functional materials).
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Affiliation(s)
- Neha Yadav
- Department of Materials Science and Engineering,School of Molecular Science and Engineering, Vidyasirimedhi institute of Science and Technology, 21210,Payupnai,Wangchan, Rayong, Thailand
| | - Farzad Seidi
- Department of Materials Science and Engineering,School of Molecular Science and Engineering, Vidyasirimedhi institute of Science and Technology, 21210,Payupnai,Wangchan, Rayong, Thailand
| | - Daniel Crespy
- Department of Materials Science and Engineering,School of Molecular Science and Engineering, Vidyasirimedhi institute of Science and Technology, 21210,Payupnai,Wangchan, Rayong, Thailand
| | - Valerio D'Elia
- Department of Materials Science and Engineering,School of Molecular Science and Engineering, Vidyasirimedhi institute of Science and Technology, 21210,Payupnai,Wangchan, Rayong, Thailand
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Green synthesis of manganese nanoparticles: Applications and future perspective–A review. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 189:234-243. [DOI: 10.1016/j.jphotobiol.2018.10.022] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/25/2018] [Accepted: 10/29/2018] [Indexed: 12/12/2022]
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