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Chinga Carrasco, GaryORCID iD iconorcid.org/0000-0002-6183-2017
Publikasjoner (10 av 130) Visa alla publikasjoner
Ruwoldt, J., Chinga Carrasco, G. & Opedal, M. T. (2024). Sustainable Materials from Organosolv Fibers and Lignin, Kraft Fibers, and Their Blends. Polymers, 16(3), Article ID 377.
Åpne denne publikasjonen i ny fane eller vindu >>Sustainable Materials from Organosolv Fibers and Lignin, Kraft Fibers, and Their Blends
2024 (engelsk)Inngår i: Polymers, E-ISSN 2073-4360, Vol. 16, nr 3, artikkel-id 377Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The aim of this study was to investigate new materials from organosolv fibers, organosolv lignin, kraft fibers, and their blends. The organosolv fibers showed reprecipitated lignin on the surface, a comparably low fiber length of 0.565 mm on average, and a high fines content of 82.3%. Handsheets were formed and thermopressed at 175 °C and 50 MPa, yielding dense materials (1050–1100 kg/m3) with properties different to that of regular paper products. The thermopressing of organosolv fibers alone produced materials with similar or better tensile strength (σb = 18.6 MPa) and stiffness (E* = 2.8 GPa) to the softwood Kraft reference pulp (σb = 14.8 MPa, E* = 1.8 GPa). The surface morphology was also smoother with fewer cavities. As a result, the thermopressed organosolv fibers exhibited higher hydrophobicity (contact angle > 95°) and had the lowest overall water uptake. Combinations of Kraft fibers with organosolv fibers or organosolv lignin showed reduced wetting and a higher density than the Kraft fibers alone. Furthermore, the addition of organosolv lignin to Kraft fibers greatly improved tensile stiffness and strength (σb = 23.8 MPa, E* = 10.5 GPa), likely due to the lignin acting as a binder to the fiber network. In conclusion, new thermopressed materials were developed and tested, which show promising potential for sustainable fiber materials with improved water resistance.

sted, utgiver, år, opplag, sider
Multidisciplinary Digital Publishing Institute (MDPI), 2024
Emneord
added-lignin thermoformed pulps, green materials, Kraft pulp, molded pulp, organosolv fibers, thermoforming, Anatomy, Contact Angle, Fibers, Stiffness, Tensile Strength, Wetting, Morphology, Surface morphology, Added-lignin thermoformed pulp, Fiber length, Fines content, Kraft fibers, Moulded pulp, Organosolv, Organosolv fiber, Organosolv lignin, Sustainable materials, Lignin
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-71954 (URN)10.3390/polym16030377 (DOI)2-s2.0-85184694922 (Scopus ID)
Forskningsfinansiär
The Research Council of Norway, 257622
Merknad

 Correspondence Address: J. Ruwoldt; RISE PFI AS, Trondheim, Høgskoleringen 6B, 7491, Norway; This article was funded by the Research Council of Norway via the FME Centre for environmentally friendly energy research Bio4Fuel, grant number 257622.

Tilgjengelig fra: 2024-02-27 Laget: 2024-02-27 Sist oppdatert: 2024-02-27bibliografisk kontrollert
Rodriguez Fabia, S., Zarna, C. & Chinga Carrasco, G. (2023). A comparative study of kraft pulp fibres and the corresponding fibrillated materials as reinforcement of LDPE- and HDPE-biocomposites. Composites. Part A, Applied science and manufacturing, 173, Article ID 107678.
Åpne denne publikasjonen i ny fane eller vindu >>A comparative study of kraft pulp fibres and the corresponding fibrillated materials as reinforcement of LDPE- and HDPE-biocomposites
2023 (engelsk)Inngår i: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 173, artikkel-id 107678Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Cellulose nanofibrils (CNFs) have been proposed as reinforcement for thermoplastic polymers due to their potentially superior mechanical properties. However, it seems still uncertain how the reinforcement ability of CNFs compares to cheaper pulp fibres, and how the suspected potential of CNFs can be fully utilized in biocomposites. Therefore, this study presents a direct comparative investigation of kraft pulp fibres and their fibrillated materials as reinforcement of high- or low-density polyethylene. Besides the experimental investigations, the tensile properties of the corresponding biocomposites were predicted by using micromechanical analysis. It was shown that considering the same fraction of fibrous materials (pulp fibres vs CNFs), the experimental and modelling results revealed that the highest tensile strength was obtained from the pulp fibre-reinforced biocomposites. Regarding the CNFs-reinforced biocomposites, the compatibilizer content had to be up to 20 wt% to experimentally achieve the tensile strength predicted by the model. © 2023 The Author(s)

sted, utgiver, år, opplag, sider
Elsevier Ltd, 2023
Emneord
Analytical modelling, Cellulose fibres, Fibre/matrix bond, Mechanical testing, Cellulose, Composites, Fibers, Kraft Papers, Materials, Pulps, Reinforcement, Tensile Strength, Composite materials, Kraft pulp, Analytical modeling, Biocomposite, Cellulose fiber, Cellulose nanofibrils, Comparatives studies, Experimental investigations, Fiber-matrix bonds, Kraft pulp fibers, Pulp fibers, Thermoplastic polymer
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-65986 (URN)10.1016/j.compositesa.2023.107678 (DOI)2-s2.0-85164212425 (Scopus ID)
Merknad

 Correspondence Address: S. Rodríguez-Fabià; RISE PFI, Trondheim, Høgskoleringen 6b, 7491, Norway; 

The Research Council of Norway and the companies supporting the WoBiCo project “From wood to sustainable biocomposites” (Grant no. 328773).

Tilgjengelig fra: 2023-08-23 Laget: 2023-08-23 Sist oppdatert: 2023-08-23bibliografisk kontrollert
Zarna, C., Chinga-Carrasco, G. & Echtermeyer, A. T. (2023). Bending properties and numerical modelling of cellular panels manufactured from wood fibre/PLA biocomposite by 3D printing. Composites. Part A, Applied science and manufacturing, 165, Article ID 107368.
Åpne denne publikasjonen i ny fane eller vindu >>Bending properties and numerical modelling of cellular panels manufactured from wood fibre/PLA biocomposite by 3D printing
2023 (engelsk)Inngår i: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 165, artikkel-id 107368Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The major advantage of cellular structures is the saving of material, energy, cost, and weight. Biocomposites are strong, lightweight materials and offer a high degree of design freedom. The purpose of this study was to characterise and compare the bending properties of various cellular structures for utilisation in panels made of a wood fibre/PLA biocomposite. Material extrusion (MEX) 3D printing is a highly flexible manufacturing method and well-suited for prototyping. Hence, MEX was applied to manufacture five different cell configurations that were mechanically tested. Additionally, numerical simulations were carried out to present a tool for optimising the structures for future requirements. Two material modelling approaches, a hyperelastic and a linear elastic, bimodular model were created and validated based on 3-point-bending tests. It is shown that a linear elastic, bimodular and perfectly plastic material model can adequately capture the elastic/plastic bending behaviour of the corresponding 3D-printed sandwich panels. © 2022 The Author(s)

sted, utgiver, år, opplag, sider
Elsevier Ltd, 2023
Emneord
3-D printing, Biocomposites, Finite element analysis (FEA), Sandwich structures, 3D printers, Bending tests, Cellular automata, Composite materials, Honeycomb structures, Numerical models, Wood products, 3D-printing, Bending properties, Biocomposite, Cellular structure, Finite element analyse, Linear elastic, Material modeling, Woodfiber, Finite element method
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-62357 (URN)10.1016/j.compositesa.2022.107368 (DOI)2-s2.0-85144457624 (Scopus ID)
Merknad

Funding details: Norges Forskningsråd, 282310; Funding text 1: The Research Council of Norway and the companies supporting the ALLOC project (Grant no. 282310) are thanked for funding.

Tilgjengelig fra: 2023-01-24 Laget: 2023-01-24 Sist oppdatert: 2023-05-17bibliografisk kontrollert
Zarna, C., Chinga Carrasco, G. & Echtermeyer, A. (2023). Biocomposite panels with unidirectional core stiffeners − 3-point bending properties and considerations on 3D printing and extrusion as a manufacturing method. Composite structures, 313, Article ID 116930.
Åpne denne publikasjonen i ny fane eller vindu >>Biocomposite panels with unidirectional core stiffeners − 3-point bending properties and considerations on 3D printing and extrusion as a manufacturing method
2023 (engelsk)Inngår i: Composite structures, ISSN 0263-8223, E-ISSN 1879-1085, Vol. 313, artikkel-id 116930Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Sandwich panels with unidirectional core stiffeners are known for their relatively high bending stiffness at low weight, stability under compressive and shear loads and energy absorption capability. In this study, 3D printing was used to screen biocomposite sandwich panels easily and preliminarily with different unidirectional core stiffener designs. Thermomechanical pulp (TMP) fibre-reinforced poly(lactic acid) (PLA) was used in this study. A corrugated, trapezoid and arched cell structure were tested experimentally and numerically using a bimodular material model, accounting for different behaviour in tension and compression. The trapezoid structure showed the best flexural properties of the three 3D-printed sandwich beams. It was chosen to be explored further, manufacturing it by extrusion. Extrusion is a production process likely to be used in industry on a larger scale. Basic material properties of the biocomposites were obtained from injection moulded dogbone specimens. The flexural properties of the extruded panels were measured experimentally and simulated using finite element analysis. Simulations were done with a hyperelastic material model. Predictions and experiments were in adequate agreement, allowing such kind of simulation to be used for extruded biocomposite sandwich panels. © 2023 The Author(s)

sted, utgiver, år, opplag, sider
Elsevier Ltd, 2023
Emneord
3D printing, Biocomposites, Extrusion, Mechanical properties, Wood fibres, Bending strength, Composite materials, Extrusion molding, Honeycomb structures, Injection molding, Sandwich structures, 3-D printing, 3D-printing, Bending properties, Bending stiffness, Biocomposite, Flexural properties, Manufacturing methods, Point bending, Sandwich panel, Woodfiber, Tensile strength, Bend Strength, Composites, Stiffness
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-64402 (URN)10.1016/j.compstruct.2023.116930 (DOI)2-s2.0-85150827371 (Scopus ID)
Merknad

Funding details: Norges Forskningsråd, 282310; Funding text 1: The Research Council of Norway and the companies supporting the ALLOC project (Grant no. 282310) are thanked for funding.

Tilgjengelig fra: 2023-05-03 Laget: 2023-05-03 Sist oppdatert: 2023-05-03bibliografisk kontrollert
Hui, I., Pasquier, E., Solberg, A., Agrenius, K., Håkansson, J. & Chinga Carrasco, G. (2023). Biocomposites containing poly(lactic acid) and chitosan for 3D printing: Assessment of mechanical, antibacterial and in vitro biodegradability properties. Journal of The Mechanical Behavior of Biomedical Materials, 147, Article ID 106136.
Åpne denne publikasjonen i ny fane eller vindu >>Biocomposites containing poly(lactic acid) and chitosan for 3D printing: Assessment of mechanical, antibacterial and in vitro biodegradability properties
Vise andre…
2023 (engelsk)Inngår i: Journal of The Mechanical Behavior of Biomedical Materials, ISSN 1751-6161, E-ISSN 1878-0180, Vol. 147, artikkel-id 106136Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

New bone repair materials are needed for treatment of trauma- and disease-related skeletal defects as they still represent a major challenge in clinical practice. Additionally, new strategies are required to combat orthopedic device-related infections (ODRI), given the rising incidence of total joint replacement and fracture fixation surgeries in increasingly elderly populations. Recently, the convergence of additive manufacturing (AM) and bone tissue engineering (BTE) has facilitated the development of bone healthcare to achieve personalized three-dimensional (3D) scaffolds. This study focused on the development of a 3D printable bone repair material, based on the biopolymers poly(lactic acid) (PLA) and chitosan. Two different types of PLA and chitosan differing in their molecular weight (MW) were explored. The novel feature of this research was the successful 3D printing using biocomposite filaments composed of PLA and 10 wt% chitosan, with clear chitosan entrapment within the PLA matrix confirmed by Scanning Electron Microscopy (SEM) images. Tensile testing of injection molded samples indicated an increase in stiffness, compared to pure PLA scaffolds, suggesting potential for improved load-bearing characteristics in bone scaffolds. However, the potential benefit of chitosan on the biocomposite stiffness could not be reproduced in compression testing of 3D printed cylinders. The antibacterial assays confirmed antibacterial activity of chitosan when dissolved in acetic acid. The study also verified the biodegradability of the scaffolds, with a process producing an acidic environment that could potentially be neutralized by chitosan. In conclusion, the study indicated the feasibility of the proposed PLA/chitosan biocomposite for 3D printing, demonstrating adequate mechanical strength, antibacterial properties and biodegradability, which could serve as a new material for bone repair.

sted, utgiver, år, opplag, sider
Elsevier Ltd, 2023
Emneord
3D printing; Biodegradability; Biopolymers; Compression testing; Injection molding; Lactic acid; Repair; Scaffolds (biology); Scanning electron microscopy; Stiffness; Stiffness matrix; Tensile testing; 3-D printing; 3D-printing; Antibacterials; Biocomposite; Bone repair materials; In-vitro; Mechanical; Poly lactic acid; Poly(lactic acid); Property; Chitosan
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-67723 (URN)10.1016/j.jmbbm.2023.106136 (DOI)2-s2.0-85172305781 (Scopus ID)
Forskningsfinansiär
The Research Council of Norway, 337610
Merknad

Norges forskningsråd

Tilgjengelig fra: 2023-11-03 Laget: 2023-11-03 Sist oppdatert: 2023-11-21bibliografisk kontrollert
Chinga Carrasco, G., Pasquier, E., Solberg, A., Leirset, I., Stevanic Srndovic, J., Rosendahl, J. & Håkansson, J. (2023). Carboxylated nanocellulose for wound healing applications – Increase of washing efficiency after chemical pre-treatment and stability of homogenized gels over 10 months. Carbohydrate Polymers, 314, Article ID 120923.
Åpne denne publikasjonen i ny fane eller vindu >>Carboxylated nanocellulose for wound healing applications – Increase of washing efficiency after chemical pre-treatment and stability of homogenized gels over 10 months
Vise andre…
2023 (engelsk)Inngår i: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 314, artikkel-id 120923Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

To commercialize a biomedical product as a medical device, reproducibility of production and time-stability are important parameters. Studies of reproducibility are lacking in the literature. Additionally, chemical pre-treatments of wood fibres to produce highly fibrillated cellulose nanofibrils (CNF) seem to be demanding in terms of production efficiency, being a bottleneck for industrial upscaling. In this study, we evaluated the effect of pH on the dewatering time and washing steps of 2,2,6,6-Tetramethylpiperidinyloxy (TEMPO)-mediated oxidized wood fibres when applying 3.8 mmol NaClO/g cellulose. The results indicate that the method does not affect the carboxylation of the nanocelluloses, and levels of approximately 1390 μmol/g were obtained with good reproducibility. The washing time of a Low-pH sample was reduced to 1/5 of the time required for washing a Control sample. Additionally, the stability of the CNF samples was assessed over 10 months and changes were quantified, the most pronounced were the increase of potential residual fibre aggregates, reduction of viscosity and increase of carboxylic acid content. The cytotoxicity and skin irritation potential were not affected by the detected differences between the Control and Low-pH samples. Importantly, the antibacterial effect of the carboxylated CNFs against S. aureus and P. aeruginosa was confirmed. © 2023 The Authors

sted, utgiver, år, opplag, sider
Elsevier Ltd, 2023
Emneord
Antibacterial, Degradation, Hydrolysis, Nanocellulose, TEMPO-oxidized fibres, Wound dressings, Chemical stability, Fibers, Gels, Nanofibers, pH, Production efficiency, Washing, Wood, 2, 2, 6, 6-tetramethylpiperidinyloxy-oxidized fiber, Antibacterials, Cellulose nanofibrils, Chemical pre-treatment, Nano-cellulose, Reproducibilities, Washing efficiency, Woodfiber, Wound healing applications, Carboxylation
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-64385 (URN)10.1016/j.carbpol.2023.120923 (DOI)2-s2.0-85152907526 (Scopus ID)
Merknad

Correspondence Address: Chinga-Carrasco, G.; RISE, Norway; email: gary.chinga.carrasco@rise-pfi.no; Funding details: Norges Forskningsråd, 309178; Funding text 1: The authors thank the Research Council of Norway for funding (OxyPol project - “Oxygenated biopolymers for biomedical applications”, grant no. 309178 ). 

Tilgjengelig fra: 2023-05-03 Laget: 2023-05-03 Sist oppdatert: 2023-11-03bibliografisk kontrollert
Ruwoldt, J., Heen Blindheim, F. & Chinga Carrasco, G. (2023). Functional surfaces, films, and coatings with lignin - a critical review. RSC Advances, 13(18), 12529-12553
Åpne denne publikasjonen i ny fane eller vindu >>Functional surfaces, films, and coatings with lignin - a critical review
2023 (engelsk)Inngår i: RSC Advances, E-ISSN 2046-2069, Vol. 13, nr 18, s. 12529-12553Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Lignin is the most abundant polyaromatic biopolymer. Due to its rich and versatile chemistry, many applications have been proposed, which include the formulation of functional coatings and films. In addition to replacing fossil-based polymers, the lignin biopolymer can be part of new material solutions. Functionalities may be added, such as UV-blocking, oxygen scavenging, antimicrobial, and barrier properties, which draw on lignin's intrinsic and unique features. As a result, various applications have been proposed, including polymer coatings, adsorbents, paper-sizing additives, wood veneers, food packaging, biomaterials, fertilizers, corrosion inhibitors, and antifouling membranes. Today, technical lignin is produced in large volumes in the pulp and paper industry, whereas even more diverse products are prospected to be available from future biorefineries. Developing new applications for lignin is hence paramount - both from a technological and economic point of view. This review article is therefore summarizing and discussing the current research-state of functional surfaces, films, and coatings with lignin, where emphasis is put on the formulation and application of such solutions. 

sted, utgiver, år, opplag, sider
Royal Society of Chemistry, 2023
Emneord
Additives, Biomolecules, Biopolymers, Corrosion resistant coatings, Paper and pulp industry, Wood, Coatings and films, Critical review, Films and coatings, Functional coating, Functional films, Functional surfaces, Polyaromatics, Surface coatings, Surface films, Versatile chemistry, Lignin
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-64674 (URN)10.1039/d2ra08179b (DOI)2-s2.0-85156140541 (Scopus ID)
Merknad

Correspondence Address: Ruwoldt, J.; RISE PFI AS, Norway; Funding details: Norges Forskningsråd; Funding text 1: The authors thank the Research Council of Norway for funding part of this work.

Tilgjengelig fra: 2023-05-15 Laget: 2023-05-15 Sist oppdatert: 2023-10-30bibliografisk kontrollert
Rosendahl, J., Zarna, C., Håkansson, J. & Chinga-Carrasco, G. (2023). Gene-Expression Analysis of Human Fibroblasts Affected by 3D-Printed Carboxylated Nanocellulose Constructs. Bioengineering, 10(1), Article ID 121.
Åpne denne publikasjonen i ny fane eller vindu >>Gene-Expression Analysis of Human Fibroblasts Affected by 3D-Printed Carboxylated Nanocellulose Constructs
2023 (engelsk)Inngår i: Bioengineering, E-ISSN 2306-5354, Vol. 10, nr 1, artikkel-id 121Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Three-dimensional (3D) printing has emerged as a highly valuable tool to manufacture porous constructs. This has major advantages in, for example, tissue engineering, in which 3D scaffolds provide a microenvironment with adequate porosity for cell growth and migration as a simulation of tissue regeneration. In this study, we assessed the suitability of three cellulose nanofibrils (CNF) that were obtained through 2,2,6,6-tetramethylpyperidine-1-oxyl (TEMPO)-mediated oxidation. The CNFs were obtained by applying three levels of carboxylation, i.e., 2.5, 3.8, and 6.0 mmol sodium hypochlorite (NaClO) per gram of cellulose. The CNFs exhibited different nanofibrillation levels, affecting the corresponding viscosity and 3D printability of the CNF gels (0.6 wt%). The scaffolds were manufactured by micro-extrusion and the nanomechanical properties were assessed with nanoindentation. Importantly, fibroblasts were grown on the scaffolds and the expression levels of the marker genes, which are relevant for wound healing and proliferation, were assessed in order to reveal the effect of the 3D-scaffold microenvironment of the cells. © 2023 by the authors.

sted, utgiver, år, opplag, sider
MDPI, 2023
Emneord
3D-printing, characterization, gene expression, nanocellulose, wound dressings
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-63992 (URN)10.3390/bioengineering10010121 (DOI)2-s2.0-85146750909 (Scopus ID)
Merknad

Funding details: 283895, 309178; Funding details: European Commission, EC; Funding details: Norges Forskningsråd, MNET17/NMCS-1204; Funding text 1: The authors acknowledge the European Commission and the Research Council of Norway for funding part of this work through the MANUNET III program (project no. MNET17/NMCS-1204), the MedIn project (grant no. 283895), “New functionalized medical devices for surgical interventions in the pelvic cavity” and the OxyPol project (“Oxygenated biopolymers for biomedical applications”, grant no. 309178).

Tilgjengelig fra: 2023-02-15 Laget: 2023-02-15 Sist oppdatert: 2023-05-22bibliografisk kontrollert
Pasquier, E., Rosendahl, J., Solberg, A., Ståhlberg, A., Håkansson, J. & Chinga Carrasco, G. (2023). Polysaccharides and Structural Proteins as Components in Three-Dimensional Scaffolds for Breast Cancer Tissue Models: A Review. Bioengineering, 10(6), Article ID 682.
Åpne denne publikasjonen i ny fane eller vindu >>Polysaccharides and Structural Proteins as Components in Three-Dimensional Scaffolds for Breast Cancer Tissue Models: A Review
Vise andre…
2023 (engelsk)Inngår i: Bioengineering, E-ISSN 2306-5354, Vol. 10, nr 6, artikkel-id 682Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Breast cancer is the most common cancer among women, and even though treatments are available, efficiency varies with the patients. In vitro 2D models are commonly used to develop new treatments. However, 2D models overestimate drug efficiency, which increases the failure rate in later phase III clinical trials. New model systems that allow extensive and efficient drug screening are thus required. Three-dimensional printed hydrogels containing active components for cancer cell growth are interesting candidates for the preparation of next generation cancer cell models. Macromolecules, obtained from marine- and land-based resources, can form biopolymers (polysaccharides such as alginate, chitosan, hyaluronic acid, and cellulose) and bioactive components (structural proteins such as collagen, gelatin, and silk fibroin) in hydrogels with adequate physical properties in terms of porosity, rheology, and mechanical strength. Hence, in this study attention is given to biofabrication methods and to the modification with biological macromolecules to become bioactive and, thus, optimize 3D printed structures that better mimic the cancer cell microenvironment. Ink formulations combining polysaccharides for tuning the mechanical properties and bioactive polymers for controlling cell adhesion is key to optimizing the growth of the cancer cells. © 2023 by the authors.

sted, utgiver, år, opplag, sider
MDPI, 2023
Emneord
3D bioprinting, biopolymers, breast cancer models, cells microenvironment
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-65684 (URN)10.3390/bioengineering10060682 (DOI)2-s2.0-85163723963 (Scopus ID)
Merknad

Correspondence Address: G. Chinga-Carrasco; RISE PFI AS, Trondheim, Høgskoleringen 6b, NO-7491, Norway; E.P.: A.S. (Amalie Solberg), and G.C.-C. thank the Research Council of Norway and bioMAT4EYE project (Grant 337610) for funding part of this work. A.S. (Anders Ståhlberg) is funded by Region Västra Götaland, Swedish Cancer Society (2022-2080), Swedish Childhood Cancer Foundation (2022-0030), Swedish Research Council (2021-01008); the Swedish state under the agreement between the Swedish government and the county councils, the ALF-agreement (965065), Sweden’s Innovation Agency and the Sjöberg Foundation. J.H. and J.R. are funded by the Swedish Foundation for Strategic Research (FID15-0008), Sweden’s Innovation Agency (2017-03737 and 2021-04484) and Region Västra Götalandsregionen (RUN 2018-00017).

Tilgjengelig fra: 2023-08-07 Laget: 2023-08-07 Sist oppdatert: 2023-11-03bibliografisk kontrollert
Jacobsen, E. U., Følkner, S. P., Blindheim, J., Molteberg, D., Steinert, M. & Chinga Carrasco, G. (2023). The Effect of Cellulose Nanofibres on Dewatering during Wet-Forming and the Mechanical Properties of Thermoformed Specimens Made of Thermomechanical and Kraft Pulps. Nanomaterials, 13(18), Article ID 2511.
Åpne denne publikasjonen i ny fane eller vindu >>The Effect of Cellulose Nanofibres on Dewatering during Wet-Forming and the Mechanical Properties of Thermoformed Specimens Made of Thermomechanical and Kraft Pulps
Vise andre…
2023 (engelsk)Inngår i: Nanomaterials, E-ISSN 2079-4991, Vol. 13, nr 18, artikkel-id 2511Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Due to environmental concerns regarding single-use plastic materials, major efforts are being made to develop new material concepts based on biodegradable and renewable resources, e.g., wood pulp. In this study, we assessed two types of wood pulp fibres, i.e., thermomechanical pulp (TMP) and Kraft pulp fibres, and tested the performance of the fibres in wet-moulding and thermopressing trials. Kraft pulp fibres appeared to retain more water than TMP, increasing the dewatering time during wet-moulding and apparently increasing the compression resistance of the pulp during thermoforming. Additionally, cellulose nanofibres (CNF) were added to the pulps, which improved the mechanical properties of the final thermopressed specimens. However, the addition of CNF to the pulps (from 2 to 6%) had a further decrease in the dewatering efficiency in the wet-moulding process, and this effect was more pronounced in the Kraft pulp specimens. The mechanical performance of the thermoformed specimens was in the same range as the plastic materials that are conventionally used in food packaging, i.e., modulus 0.6–1.2 GPa, strength 49 MPa and elongation 6–9%. Finally, this study demonstrates the potential of wood pulps to form three-dimensional thermoformed products. 

sted, utgiver, år, opplag, sider
Multidisciplinary Digital Publishing Institute (MDPI), 2023
HSV kategori
Identifikatorer
urn:nbn:se:ri:diva-67922 (URN)10.3390/nano13182511 (DOI)2-s2.0-85172789228 (Scopus ID)
Merknad

The Research Council of Norway is thanked for funding part of this research.

Tilgjengelig fra: 2023-11-27 Laget: 2023-11-27 Sist oppdatert: 2023-11-27bibliografisk kontrollert
Organisasjoner
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0002-6183-2017
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