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Panahi, P., Khorasani, S. N., Mensah, R. A., Das, O. & Neisiany, R. E. (2024). A review of the characterization methods for self-healing assessment in polymeric coatings. Progress in organic coatings, 186, Article ID 108055.
Open this publication in new window or tab >>A review of the characterization methods for self-healing assessment in polymeric coatings
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2024 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 186, article id 108055Article, review/survey (Refereed) Published
Place, publisher, year, edition, pages
Elsevier, 2024
National Category
Software Engineering
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-102438 (URN)10.1016/j.porgcoat.2023.108055 (DOI)2-s2.0-85175543977 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-11-15 (hanlid)

Available from: 2023-11-13 Created: 2023-11-13 Last updated: 2023-11-15Bibliographically approved
Raja, P., Murugan, V., Ravichandran, S., Behera, L., Mensah, R. A., Mani, S., . . . Das, O. (2023). A Review of Sustainable Bio-Based Insulation Materials for Energy-Efficient Buildings. Macromolecular materials and engineering, 308(10), Article ID 2300086.
Open this publication in new window or tab >>A Review of Sustainable Bio-Based Insulation Materials for Energy-Efficient Buildings
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2023 (English)In: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 308, no 10, article id 2300086Article, review/survey (Refereed) Published
Abstract [en]

The surge towards a sustainable future in the construction industry requires the use of bio-based insulation materials as an alternative to conventional ones for improving energy efficiency in structures. In this article, the features of bio-based insulation materials, including their thermal conductivities, moisture buffering value, fire performance, and life cycle evaluations are examined. It is clear from the review that pre- and post-treatment of the bio-based materials used for insulation materials optimize their properties. The life cycle analysis reveals a significant reduction in global warming potential (GWP) compared to conventional foams. In addition, it is envisaged that producing bio-based insulation materials on a larger scale will further decrease the net GWP. The article, therefore, proposes the implementation of policies that will promote the commercialization of bio-based insulation materials.

Place, publisher, year, edition, pages
John Wiley and Sons Inc, 2023
Keywords
construction, degradable materials, fire reactions, insulation, renewable sources
National Category
Energy Systems Wood Science
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-97967 (URN)10.1002/mame.202300086 (DOI)000995935600001 ()2-s2.0-85160288253 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-11-01 (joosat);

Licens fulltext: CC BY License

Available from: 2023-06-07 Created: 2023-06-07 Last updated: 2024-01-17Bibliographically approved
Varsally, Z. B., Tripathi, N., Weldekidan, H., Rodriguez-Uribe, A., Das, O., Mohanty, A. K. & Misra, M. (2023). A sustainable approach for developing biocarbon from lignin and its utilization in recycled ocean nylon based biocomposites. Composites Part C: Open Access, 12, Article ID 100376.
Open this publication in new window or tab >>A sustainable approach for developing biocarbon from lignin and its utilization in recycled ocean nylon based biocomposites
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2023 (English)In: Composites Part C: Open Access, E-ISSN 2666-6820, Vol. 12, article id 100376Article in journal (Refereed) Published
Abstract [en]

Nylon/polyamide (PA6) is a major cause of ocean plastic pollution because of its extended use in commercial fishing activities. Recovery of this nylon from oceans and its use in manufacturing new materials or composites is urgently required to promote sustainability and circularity. In this work, unlike higher-density mineral fillers, lignin from the forestry industry was converted into biocarbon, which was used as a lightweight filler to manufacture recycled-ocean nylon (RN)-based composites. Biocarbon is a highly stable, competitive, and sustainable filler for high-performance engineering plastics such as nylon. Lignin was pyrolyzed at 600 °C followed by further treatment at 1200 °C (with and without cobalt (II) nitrate catalyst) to induce graphitization in the produced biocarbon. Among the three types of biocarbon samples, such as pyrolyzed at 600 °C, 1200 °C and 1200 °C catalyzed lignin biocarbon, the catalyzed biocarbon showed the maximum electrical conductivity. Catalyzed lignin biocarbon pyrolyzed at 1200 °C showed an increase of 85% in electrical conductivity compared to commercial mineral graphite. The biocomposites consisting of 600 °C biocarbon were manufactured by injection molding at different filler contents up to 40 wt.%. The biocomposites consisting of 40% of pyrolyzed lignin at 600 °C showed increased flexural strength, flexural modulus, and heat deflection temperature by 41, 76 and 76%, respectively, compared to neat RN. Improved properties of the prepared biocarbons and biocomposites showed the potential of RN-based composites in the automotive industries.

Place, publisher, year, edition, pages
Elsevier B.V., 2023
Keywords
Biocomposite, Electrical properties, Injection molding, Mechanical properties
National Category
Energy Engineering
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-99548 (URN)10.1016/j.jcomc.2023.100376 (DOI)2-s2.0-85166902554 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-08-14 (joosat);

Funder: Ontario Research Fund, Research Excellence Program, Round 9 (ORF-RE09); Ontario Ministry of Economic Development, Job Creation and Trade (Project Nos. 053970, 054345); Ontario Agri-Food Innovation Alliance - Gryphon’s Leading to the Accelerated Adoption of Innovative Research (LAAIR) Program (Project No. 030736); Natural Sciences and Engineering Research Council of Canada (NSERC), Canada Research Chair (CRC) program (Project No. 460788); NSERC - Discovery Grants Project (No. 401111);  NSERC -Collaborative Research and Development Grants (CRD), (Project No. 401637)

Licens fulltext: CC BY-NC-ND License

Available from: 2023-08-14 Created: 2023-08-14 Last updated: 2023-08-14Bibliographically approved
Anerao, P., Kulkarni, A., Munde, Y., Shinde, A. & Das, O. (2023). Biochar reinforced PLA composite for fused deposition modelling (FDM): A parametric study on mechanical performance. Composites Part C: Open Access, 12, Article ID 100406.
Open this publication in new window or tab >>Biochar reinforced PLA composite for fused deposition modelling (FDM): A parametric study on mechanical performance
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2023 (English)In: Composites Part C: Open Access, E-ISSN 2666-6820, Vol. 12, article id 100406Article in journal (Refereed) Published
Abstract [en]

Rice husk biochar was added to polylactic acid (PLA) to create a biocomposite filament suitable for the extrusion-based 3D printing process of fused deposition modelling (FDM). Taguchi L16 was used for experiment design, and the significance of process parameters was determined using variance analysis (ANOVA). For a 0.3-mm layer thickness, the addition of 5 wt.% biochar resulted in ultimate tensile strength and a modulus of elasticity of 36 MPa and 1103 MPa, respectively. The addition of biochar had a negative influence on flexural strength. The maximum flexural modulus was obtained with 3 % biochar, 100 % infill density, and 0.1 mm layer thickness. Particularly, 1 % biochar resulted in a considerable increase in impact strength, while a subsequent rise in biochar resulted in a decrease, probably due to the agglomeration effect. For 3D printed neat PLA, the average tensile strength, tensile modulus, flexural strength, flexural modulus, and impact strength observed were 19 MPa, 550 MPa, 54 MPa, 1981 MPa, and 25 KJ/m2, respectively. Additionally, considering the output of each test, a multicriteria decision-making model, namely, TOPSIS, has been utilized for ranking the mechanical performance. In order to optimise the mechanical properties of three-dimensional printed objects, the study suggests a layer thickness of 0.2 mm, an infill density of 100 %, and raster angle of 0° as the FDM process parameters.

Place, publisher, year, edition, pages
Elsevier B.V., 2023
Keywords
3D-printing, Biochar, Biocomposite, Mechanical properties, PLA polymer, Statistical analysis
National Category
Other Materials Engineering
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-101626 (URN)10.1016/j.jcomc.2023.100406 (DOI)2-s2.0-85172898221 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-10-11 (joosat);

CC BY 4.0 License

Available from: 2023-10-11 Created: 2023-10-11 Last updated: 2023-10-11Bibliographically approved
Abolhasani, H., Farzi, G., Davoodi, A., Vakili-Azghandi, M., Das, O. & Neisiany, R. E. (2023). Development of self-healable acrylic water-based environmental-friendly coating as an alternative to chromates coatings. Progress in organic coatings, 176, Article ID 107402.
Open this publication in new window or tab >>Development of self-healable acrylic water-based environmental-friendly coating as an alternative to chromates coatings
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2023 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 176, article id 107402Article in journal (Refereed) Published
Abstract [en]

In this study, different coating systems, including solvent-based epoxy and water-based acrylic resins, were evaluated for their potential as an alternative to chromate coatings in order to avoid Cr(VI) toxic hazards. The resins were used as either pigment-free coatings or were formulated with 20-wt% zinc/aluminum pigments. The coatings were subsequently applied on galvanized ST12 steel plates and their corrosion resistance was investigated by electrochemical impedance spectroscopy (EIS) evaluations. The effect of the binder and pigment type on the impact resistance of two different polymeric coatings was also evaluated. The results of impact tests revealed completely peeled film from the substrate for epoxy coatings. However, under the same experimental conditions, very few small cracks were created in water-based acrylic coatings for both pigmented and pigment-free cases. In addition, some other parameters such as drying time and coating cost were taken into account to select a good alternative to chromate coatings. The results of this work can facilitate the introduction of an inexpensive environmentally friendly acrylic coating as a promising self-healing alternative to chromate coating.

Place, publisher, year, edition, pages
Elsevier B.V., 2023
Keywords
Acrylic coating, Electrochemical impedance spectroscopy, Epoxy coating, Polymeric coatings, Self-healing
National Category
Manufacturing, Surface and Joining Technology Other Chemical Engineering
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-95291 (URN)10.1016/j.porgcoat.2022.107402 (DOI)000920270000001 ()2-s2.0-85145647595 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-01-23 (sofila);

Funder: Mobarakeh Steel Company, Iran

Available from: 2023-01-23 Created: 2023-01-23 Last updated: 2023-04-21Bibliographically approved
Neisiany, R. E., Aminoroaya, A., Farzi, G. & Das, O. (2023). Encapsulation: Electrospray. In: Sefat, F.; Farzi, G.; Mozafari, M. (Ed.), Principles of Biomaterials Encapsulation: Volume One: (pp. 197-212). Elsevier, 1
Open this publication in new window or tab >>Encapsulation: Electrospray
2023 (English)In: Principles of Biomaterials Encapsulation: Volume One / [ed] Sefat, F.; Farzi, G.; Mozafari, M., Elsevier , 2023, Vol. 1, p. 197-212Chapter in book (Other academic)
Place, publisher, year, edition, pages
Elsevier, 2023
Series
Woodhead Publishing Series in Biomaterials ; 1
National Category
Other Materials Engineering Biomaterials Science
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-96956 (URN)10.1016/B978-0-323-85947-9.00009-1 (DOI)2-s2.0-85151198375 (Scopus ID)
Note

ISBN för värdpublikation: 978-0-323-85947-9

Available from: 2023-04-28 Created: 2023-04-28 Last updated: 2023-04-28Bibliographically approved
Neisiany, R. E., Aminoroaya, A., Farzi, G. & Das, O. (2023). Encapsulation via electrospinning technology. In: Sefat, F.; Farzi, G.; Mozafari, M. (Ed.), Principles of Biomaterials Encapsulation: Volume One: (pp. 253-269). Elsevier, 1
Open this publication in new window or tab >>Encapsulation via electrospinning technology
2023 (English)In: Principles of Biomaterials Encapsulation: Volume One / [ed] Sefat, F.; Farzi, G.; Mozafari, M., Elsevier , 2023, Vol. 1, p. 253-269Chapter in book (Other academic)
Place, publisher, year, edition, pages
Elsevier, 2023
Series
Principles of Biomaterials Encapsulation
National Category
Biomaterials Science Other Materials Engineering
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-96955 (URN)10.1016/B978-0-323-85947-9.00013-3 (DOI)2-s2.0-85151184620 (Scopus ID)
Note

ISBN för värdpublikation: 978-0-323-85947-9

Available from: 2023-04-28 Created: 2023-04-28 Last updated: 2023-04-28Bibliographically approved
Das, O., Mensah, R. A., Balasubramanian, K. B., Shanmugam, V., Försth, M., Hedenqvist, M. S., . . . Misra, M. (2023). Functionalised biochar in biocomposites: The effect of fire retardants, bioplastics and processing methods. Composites Part C: Open Access, 11, Article ID 100368.
Open this publication in new window or tab >>Functionalised biochar in biocomposites: The effect of fire retardants, bioplastics and processing methods
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2023 (English)In: Composites Part C: Open Access, E-ISSN 2666-6820, Vol. 11, article id 100368Article in journal (Refereed) Published
Abstract [en]

Fire retardants, although can impart fire-safety in polymeric composites, are detrimental to the mechanical properties. Biochar can be used, in conjunction with fire retardants, to create a balance between fire-safety and mechanical performance. It is possible to thermally dope fire retardants into the pores of biochar to make it functionalised. Thus, the current work is intended in identifying a composite having the combination of the most desirable fire retardant, bioplastic, and a suitable processing method. A comparison was made between two fire retardants (lanosol and ammonium polyphosphate), bioplastics (wheat gluten and polyamide 11), and composite processing methods (compression and injection moulding). It was found that wheat gluten containing ammonium polyphosphate-doped biochar made by compression moulding had the best fire-safety properties with the lowest peak heat release rate (186 kW/m2), the highest fire performance index (0.6 m2s/kW), and the lowest fire growth index (1.6 kW/ms) with acceptable mechanical properties compared to the corresponding neat bioplastic. Thus, for gluten-based polymers, the use of ammonium polyphosphate thermally doped into biochar processed by compression moulding is recommended to both simultaneously improve fire-safety and conserve the mechanical strength of the resulting biocomposites.

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
Biochar, Bioplastics, Compression moulding, Fire retardants, Injection moulding
National Category
Materials Chemistry Paper, Pulp and Fiber Technology
Research subject
Structural Engineering; Wood Science and Engineering
Identifiers
urn:nbn:se:ltu:diva-98229 (URN)10.1016/j.jcomc.2023.100368 (DOI)2-s2.0-85160716623 (Scopus ID)
Funder
Brandforsk, 321–002
Note

Validerad;2023;Nivå 2;2023-06-13 (hanlid)

Available from: 2023-06-13 Created: 2023-06-13 Last updated: 2023-09-05Bibliographically approved
Lin, C.-F., Karlsson, O., Das, O., Mensah, R. A., Mantanis, G. I., Jones, D., . . . Sandberg, D. (2023). High Leach-Resistant Fire-Retardant Modified Pine Wood (Pinus sylvestris L.) by In Situ Phosphorylation and Carbamylation. ACS Omega, 8(12), 11381-11396
Open this publication in new window or tab >>High Leach-Resistant Fire-Retardant Modified Pine Wood (Pinus sylvestris L.) by In Situ Phosphorylation and Carbamylation
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2023 (English)In: ACS Omega, E-ISSN 2470-1343, Vol. 8, no 12, p. 11381-11396Article in journal (Refereed) Published
Abstract [en]

The exterior application of fire-retardant (FR) timber necessitates it to have high durability because of the possibility to be exposed to rainfall. In this study, water-leaching resistance of FR wood has been imparted by grafting phosphate and carbamate groups of the water-soluble FR additives ammonium dihydrogen phosphate (ADP)/urea onto the hydroxyl groups of wood polymers via vacuum-pressure impregnation, followed by drying/heating in hot air. A darker and more reddish wood surface was observed after the modification. Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, solid-state 13C cross-polarization magic-angle-spinning nuclear magnetic resonance (13C CP-MAS NMR), and direct-excitation 31P MAS NMR suggested the formation of C–O–P covalent bonds and urethane chemical bridges. Scanning electron microscopy/energy-dispersive X-ray spectrometry suggested the diffusion of ADP/urea into the cell wall. The gas evolution analyzed by thermogravimetric analysis coupled with quadrupole mass spectrometry revealed a potential grafting reaction mechanism starting with the thermal decomposition of urea. Thermal behavior showed that the FR-modified wood lowered the main decomposition temperature and promoted the formation of char residues at elevated temperatures. The FR activity was preserved even after an extensive water-leaching test, confirmed by the limiting oxygen index (LOI) and cone calorimetry. The reduction of fire hazards was achieved through the increase of the LOI to above 80%, reduction of 30% of the peak heat release rate (pHRR2), reduction of smoke production, and a longer ignition time. The modulus of elasticity of FR-modified wood increased by 40% without significantly decreasing the modulus of rupture.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2023
National Category
Wood Science Physical Chemistry
Research subject
Wood Science and Engineering; Structural Engineering; Chemistry of Interfaces
Identifiers
urn:nbn:se:ltu:diva-95881 (URN)10.1021/acsomega.3c00146 (DOI)000960080200001 ()37008136 (PubMedID)2-s2.0-85150425157 (Scopus ID)
Funder
Swedish Research Council Formas, 2021-00818
Note

Validerad;2023;Nivå 2;2023-04-21 (joosat);

Funder: OP RDE (Grant no.CZ.02.1.01/0.0/0.0/16_019/0000803); CT WOOD, Luleå University of Technology

Licens fulltext: CC BY License

Available from: 2023-03-15 Created: 2023-03-15 Last updated: 2023-09-22Bibliographically approved
Vijaybabu, T. R., Ramesh, T., Pandipati, S., Mishra, S., Sridevi, G., Raja, C. P., . . . Karthik Babu, N. B. (2023). High Thermal Conductivity Polymer Composites Fabrication through Conventional and 3D Printing Processes: State-of-the-Art and Future Trends. Macromolecular materials and engineering, 308(7), Article ID 2300001.
Open this publication in new window or tab >>High Thermal Conductivity Polymer Composites Fabrication through Conventional and 3D Printing Processes: State-of-the-Art and Future Trends
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2023 (English)In: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 308, no 7, article id 2300001Article, review/survey (Refereed) Published
Abstract [en]

The lifespan and the performance of flexible electronic devices and components are affected by the large accumulation of heat, and this problem must be addressed by thermally conductive polymer composite films. Therefore, the need for the development of high thermal conductivity nanocomposites has a strong role in various applications. In this article, the effect of different particle reinforcements such as single and hybrid form, coated and uncoated particles, and chemically treated particles on the thermal conductivity of various polymers are reviewed and the mechanism behind the improvement of the required properties are discussed. Furthermore, the role of manufacturing processes such as injection molding, compression molding, and 3D printing techniques in the production of high thermal conductivity polymer composites is detailed. Finally, the potential for future research is discussed, which can help researchers to work on the thermal properties enhancement for polymeric materials.

Place, publisher, year, edition, pages
John Wiley & Sons, 2023
Keywords
additive manufacturing, conductivity networks, heat transfer, polymer composites, thermal conductivity
National Category
Textile, Rubber and Polymeric Materials Composite Science and Engineering
Research subject
Structural Engineering
Identifiers
urn:nbn:se:ltu:diva-97074 (URN)10.1002/mame.202300001 (DOI)000971814100001 ()2-s2.0-85152920656 (Scopus ID)
Note

Validerad;2023;Nivå 2;2023-08-15 (marisr);

License fulltext: CC-BY. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Available from: 2023-05-10 Created: 2023-05-10 Last updated: 2024-01-17Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-5474-1512

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