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Soullard L, Pradalié F, Labat B, Lancelon-Pin C, Nonglaton G, Rolere S, Texier I, Jean B. Methacrylated Cellulose Nanocrystals as Fillers for the Development of Photo-Cross-Linkable Cytocompatible Biosourced Formulations Targeting 3D Printing. Biomacromolecules 2023; 24:6009-6024. [PMID: 38073466 DOI: 10.1021/acs.biomac.3c01090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Cellulose nanocrystals (CNCs) from cotton were functionalized in aqueous medium using methacrylic anhydride (MA) to produce methacrylated cellulose nanocrystals (mCNCs) with a degree of methacrylation (DM) up to 12.6 ± 0.50%. Dispersible as-prepared CNCs and mCNCs were then considered as reinforcing fillers for aqueous 3D-printable formulations based on methacrylated carboxymethylcellulose (mCMC). The rheological properties of such photo-cross-linkable aqueous formulations containing nonmodified CNCs or mCNCs at 0.2 or 0.5 wt% in 2 wt% mCMC were fully investigated. The influence of the presence of nanoparticles on the UV-curing kinetics and dimensions of the photo-cross-linked hydrogels was probed and 13C CP-MAS NMR spectroscopy was used to determine the maximum conversion ratio of methacrylates as well as the optimized time required for UV postcuring. The viscoelasticity of cross-linked hydrogels and swollen hydrogels was also studied. The addition of 0.5 wt% mCNC with a DM of 0.83 ± 0.040% to the formulation yielded faster cross-linking kinetics, better resolution, more robust cross-linked hydrogels, and more stable swollen hydrogels than pure mCMC materials. Additionally, the produced cryogels showed no cytotoxicity toward L929 fibroblasts. This biobased formulation could thus be considered for the 3D printing of hydrogels dedicated to biomedical purposes using vat polymerization techniques, such as stereolithography or digital light processing.
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Affiliation(s)
- Lénaïc Soullard
- Univ. Grenoble Alpes, CEA, LITEN, DTNM, Grenoble 38054, France
- Univ. Grenoble Alpes, CEA, LETI, DTBS, Grenoble 38054, France
- Univ. Grenoble Alpes, CNRS, CERMAV, Saint-Martin-d'Hères 38041, France
| | - Flavie Pradalié
- Univ. Grenoble Alpes, CNRS, CERMAV, Saint-Martin-d'Hères 38041, France
| | - Béatrice Labat
- Univ. Rouen Normandie, INSA Rouen Normandie, CNRS, PBS, Evreux 27000, France
| | | | | | | | - Isabelle Texier
- Univ. Grenoble Alpes, CEA, LETI, DTBS, Grenoble 38054, France
| | - Bruno Jean
- Univ. Grenoble Alpes, CNRS, CERMAV, Saint-Martin-d'Hères 38041, France
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Morrison TX, Gramlich WM. Tunable, thiol-ene, interpenetrating network hydrogels of norbornene-modified carboxymethyl cellulose and cellulose nanofibrils. Carbohydr Polym 2023; 319:121173. [PMID: 37567714 DOI: 10.1016/j.carbpol.2023.121173] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 06/25/2023] [Accepted: 06/30/2023] [Indexed: 08/13/2023]
Abstract
Carboxymethyl cellulose modified with norbornene groups (NorCMC) and cellulose nanofibrils (CNFs) produced through mechanical refining without chemical pretreatment formed interpenetrating network hydrogels through a UV-light initiated thiol-ene reaction. The molar ratio of thiols in crosslinkers to norbornene groups off the NorCMC (T:N), total polymer weight percent in the hydrogel, and weight percent of CNFs of the total polymer content of the hydrogels were varied to control hydrogel properties. This method enabled orders of magnitude changes to behavior. Swelling in aqueous environments could be significant (>150 %) without CNFs to minimal (<15 %) with the use of 50 % CNFs. NorCMC and CNF networks interacted synergistically to create hydrogels with compression modulus values spanning 1 to 150 kPa - the values of most biological tissues. T:N and total polymer weight percent could be varied to create hydrogels with different CNF content, but the same compression modulus, targeting 10 and 100 kPa hydrogels and providing a system that can independently vary fibrillar content and bulk modulus. Analysis of the effective crosslinks, thiol-ene network mesh size, and burst release of the polymer indicated synergistic interactions of the NorCMC thiol-ene and CNFs networks. These interactions enhanced modulus and degradation control of the network under physiological conditions.
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Affiliation(s)
| | - William M Gramlich
- Department of Chemistry, University of Maine, Orono, ME 04469, USA; Advanced Structures and Composites Center, University of Maine, Orono, ME 04469, USA; Institute of Medicine, University of Maine, Orono, ME 04469, USA.
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Chen J, Zhao L, Ling J, Yang LY, Ouyang XK. A quaternized chitosan and carboxylated cellulose nanofiber-based sponge with a microchannel structure for rapid hemostasis and wound healing. Int J Biol Macromol 2023; 233:123631. [PMID: 36775224 DOI: 10.1016/j.ijbiomac.2023.123631] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/13/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023]
Abstract
A hemostatic sponge should perform rapid hemostasis and exhibit antibacterial properties, whilst being non-toxic, breathable, and degradable. This study prepared a hemostatic sponge (CQTC) with microchannels, specifically a microchannel structure based on quaternized chitosan (QCS) and carboxylated cellulose nanofibers (CCNF) obtained by using tannic acid and Cu2+ complex (crosslinking agent). The sponge had low density and high porosity, while being degradable. The combination of microchannels and three-dimensional porous structure of CQTC leads to excellent liquid absorption and hemostasis ability, based on a liquid absorption rate test and in vitro hemostasis experiment. In addition, CQTC exhibited excellent antibacterial activity against both gram-negative and gram-positive bacteria, and it promoted wound healing. In conclusion, this porous and microchannel hemostatic sponge has broad application prospects as a clinical wound hemostatic material.
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Affiliation(s)
- Jing Chen
- Zhoushan Maternal and Child Care Hospital, Zhoushan 316000, PR China
| | - Lijuan Zhao
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Junhong Ling
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Li-Ye Yang
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Xiao-Kun Ouyang
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, PR China.
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Schmitt J, Calabrese V, da Silva MA, Hossain KMZ, Li P, Mahmoudi N, Dalgliesh RM, Washington AL, Scott JL, Edler KJ. Surfactant induced gelation of TEMPO-oxidized cellulose nanofibril dispersions probed using small angle neutron scattering. J Chem Phys 2023; 158:034901. [PMID: 36681636 DOI: 10.1063/5.0129276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
In this work, we studied TEMPO-oxidized cellulose nanofibril (OCNF) suspensions in the presence of diverse surfactants. Using a combination of small angle neutron scattering (SANS) and rheology, we compared the physical properties of the suspensions with their structural behavior. Four surfactants were studied, all with the same hydrophobic tail length but different headgroups: hexaethylene glycol mono-n-dodecyl ether (C12EO6, nonionic), sodium dodecyl sulfate (SDS, anionic), cocamidopropyl betaine (CapB, zwitterionic), and dodecyltrimethylammonium bromide (DTAB, cationic). Contrast variation SANS studies using deuterated version of C12EO6 or SDS, or by varying the D2O/H2O ratio of the suspensions (with CapB), allowed focusing only on the structural properties of OCNFs or surfactant micelles. We showed that, in the concentration range studied, for C12EO6, although the nanofibrils are concentrated thanks to an excluded volume effect observed in SANS, the rheological properties of the suspensions are not affected. Addition of SDS or CapB induces gelation for surfactant concentrations superior to the critical micellar concentration (CMC). SANS results show that attractive interactions between OCNFs arise in the presence of these anionic or zwitterionic surfactants, hinting at depletion attraction as the main mechanism of gelation. Finally, addition of small amounts of DTAB (below the CMC) allows formation of a tough gel by adsorbing onto the OCNF surface.
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Affiliation(s)
- Julien Schmitt
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Vincenzo Calabrese
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Marcelo A da Silva
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Kazi M Z Hossain
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Peixun Li
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Najet Mahmoudi
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Robert M Dalgliesh
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Adam L Washington
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Janet L Scott
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Karen J Edler
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
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Cellulose hydrogel development from unbleached oil palm biomass pulps for dermal drug delivery. Int J Biol Macromol 2022; 224:483-495. [DOI: 10.1016/j.ijbiomac.2022.10.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 10/08/2022] [Accepted: 10/15/2022] [Indexed: 11/05/2022]
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Zhang J, Huang D, Liu S, Yang Z, Dong X, Zhang H, Huang W, Zhou S, Wei Y, Hua W, Jin Y, Zhou W, Zheng W. Water soluble photocurable carboxymethyl cellulose‐based bioactive hydrogels for digital light processing. J Appl Polym Sci 2022. [DOI: 10.1002/app.52155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jiancheng Zhang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangzhou China
- Research Center of Biomass 3D Printing Materials, College of Materials and Energy South China Agricultural University Guangzhou China
| | - Da Huang
- Department of Anatomy, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering Southern Medical University Guangzhou China
- Key Laboratory of Breast Diseases in Jiangxi Province Third Hospital of Nanchang Nanchang China
| | - Shuifeng Liu
- Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangzhou China
- Research Center of Biomass 3D Printing Materials, College of Materials and Energy South China Agricultural University Guangzhou China
| | - Zijun Yang
- Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangzhou China
- Research Center of Biomass 3D Printing Materials, College of Materials and Energy South China Agricultural University Guangzhou China
| | - Xianming Dong
- Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangzhou China
- Research Center of Biomass 3D Printing Materials, College of Materials and Energy South China Agricultural University Guangzhou China
| | - Hongwu Zhang
- Department of Anatomy, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering Southern Medical University Guangzhou China
| | - Wenhua Huang
- Department of Anatomy, Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering Southern Medical University Guangzhou China
| | - Shuzhen Zhou
- Eastern Along Pharmaceutical Co., Ltd Foshan China
| | - Yen Wei
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research Tsinghua University Beijing China
| | - Weijian Hua
- Mechanical Engineering Department University of Nevada Reno Reno Nevada USA
| | - Yifei Jin
- Mechanical Engineering Department University of Nevada Reno Reno Nevada USA
| | - Wuyi Zhou
- Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangzhou China
- Research Center of Biomass 3D Printing Materials, College of Materials and Energy South China Agricultural University Guangzhou China
| | - Wenxu Zheng
- Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangzhou China
- Research Center of Biomass 3D Printing Materials, College of Materials and Energy South China Agricultural University Guangzhou China
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3D printing and properties of cellulose nanofibrils-reinforced quince seed mucilage bio-inks. Int J Biol Macromol 2021; 192:1098-1107. [PMID: 34666132 DOI: 10.1016/j.ijbiomac.2021.10.078] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/05/2021] [Accepted: 10/11/2021] [Indexed: 01/16/2023]
Abstract
Plant-based hydrogels have attracted great attention in biomedical fields since they are biocompatible and based on natural, sustainable, cost-effective, and widely accessible sources. Here, we introduced new viscoelastic bio-inks composed of quince seed mucilage and cellulose nanofibrils (QSM/CNF) easily extruded into 3D lattice structures through direct ink writing in ambient conditions. The QSM/CNF inks enabled precise control on printing fidelity where CNF endowed objects with shape stability after freeze-drying and with suitable porosity, water uptake capacity, and mechanical strength. The compressive and elastic moduli of samples produced at the highest CNF content were both increased by ~100% (from 5.1 ± 0.2 kPa and 32 ± 1 kPa to 10.7 ± 0.5 and 64 ± 2 kPa, respectively). These values ideally matched those reported for soft tissues; accordingly, the cell compatibility of the printed samples was evaluated against HepG2 cells (human liver cancer). The results confirmed the 3D hydrogels as being non-cytotoxic and suitable to support attachment, survival, and proliferation of the cells. All in all, the newly developed inks allowed sustainable 3D bio-hydrogels fitting the requirements as scaffolds for soft tissue engineering.
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Revealing the enhanced structural recovery and gelation mechanisms of cation-induced cellulose nanofibrils composite hydrogels. Carbohydr Polym 2021; 272:118515. [PMID: 34420757 DOI: 10.1016/j.carbpol.2021.118515] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 11/22/2022]
Abstract
In this study, we fabricate physically dual-crosslinked cellulose-based hydrogels by varying coordination bonding effects with the addition of either divalent or trivalent metal cations. The first crosslinked network is created by metal-carboxylate coordination bonds between the cellulose nanofibrils that have abundant carboxyl groups and the metal cations. The second crosslinked network is formed by the reaction of tetra-functional borate ion complex and the hydroxyl groups in polyvinyl alcohol. These physically dual-crosslinked networks are strongly interwoven by non-sacrificial hydrogen bonds, this dual-crosslinked network leads to enhanced recovery characteristics in the resulting hydrogels. We use three interval thixotropic testing to investigate the deformation and recovery behaviors of the hydrogels and plot their structural deformation parameters in phase diagrams to understand the underlying complexity of energy dissipation and viscoelastic dynamics of the dual-crosslinked hydrogels.
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Kelly PV, Cheng P, Gardner DJ, Gramlich WM. Aqueous Polymer Modification of Cellulose Nanofibrils by Grafting-Through a Reactive Methacrylate Group. Macromol Rapid Commun 2020; 42:e2000531. [PMID: 33205506 DOI: 10.1002/marc.202000531] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/14/2020] [Indexed: 12/21/2022]
Abstract
Modifying the surface of cellulose nanofibrils (CNFs) produced by mechanical refinement with a variety of polymer functional groups in an entirely water-based system is challenging because only surface hydroxyl groups are accessible. To address this limitation, an entirely water-based, polymer modification scheme is developed. CNFs are functionalized with a reactive methacrylate functional group followed by subsequent grafting-through polymerization. This modification worked with a variety of water-soluble and water-insoluble (meth)acrylates and (meth)acrylamides, grafting up to 45 wt% polymer on to the CNFs. The reaction conditions introducing the methacrylate functional group are adjusted to vary the degree of functionality. Soxhlet extraction of modified samples demonstrates that the reactive methacrylate group is necessary to facilitate polymer grafting. The degree of functionalization of the polymers is studied via quantitative transmission IR spectroscopy and the morphology of the resulting cellulose nanofibrils is studied via a combination of optical, scanning electron, and atomic force microscopy. High levels of polymer modification do not significantly affect the micrometer-scale fibril morphology.
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Affiliation(s)
- Peter V Kelly
- Department of Chemistry, University of Maine, Orono, ME, 04469, USA
| | - Peng Cheng
- Department of Chemistry, University of Maine, Orono, ME, 04469, USA
| | - Douglas J Gardner
- School of Forest Resources, University of Maine, Orono, ME, 04469, USA.,Advanced Structures and Composites Center, University of Maine, Orono, ME, 04469, USA
| | - William M Gramlich
- Department of Chemistry, University of Maine, Orono, ME, 04469, USA.,Advanced Structures and Composites Center, University of Maine, Orono, ME, 04469, USA
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Samadian H, Maleki H, Allahyari Z, Jaymand M. Natural polymers-based light-induced hydrogels: Promising biomaterials for biomedical applications. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213432] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Preparation of Self-supporting Bagasse Cellulose Nanofibrils Hydrogels Induced by Zinc Ions. NANOMATERIALS 2018; 8:nano8100800. [PMID: 30297645 PMCID: PMC6215239 DOI: 10.3390/nano8100800] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/29/2018] [Accepted: 10/05/2018] [Indexed: 12/20/2022]
Abstract
Cellulose hydrogels are often prepared from native cellulose through a direct cellulose dissolution approach that often involves tedious process and solvent recovery problems. A self-supporting cellulose hydrogel was prepared by gelation of the TEMPO-oxidized bagasse cellulose nanofibrils (CNF) triggered by strong crosslinking between carboxylate groups and Zn2+. TEMPO process was used to generate negatively charged carboxylate groups on CNF surface to provide a high binding capability to Zn2+. Three TEMPO-oxidized CNFs of different carboxylate contents were prepared and characterized. TEM and AFM microscopes suggested that the sizes of CNFs were fined down and carboxylated cellulose nanofibrils (TOCNFs) of 5–10 nm wide, 200–500 nm long, and carboxylate contents 0.73–1.29 mmol/g were obtained. The final structures and compressive strength of hydrogels were primarily influenced by interfibril Zn2+-carboxylate interactions, following the order of TOCNFs concentration > content of carboxylate groups > concentration of zinc ions. A CO2 sensitive self-supporting cellulose hydrogel was developed as a colorimetric indicator of food spoilage for intelligent food packaging applications.
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Huan S, Ajdary R, Bai L, Klar V, Rojas OJ. Low Solids Emulsion Gels Based on Nanocellulose for 3D-Printing. Biomacromolecules 2018; 20:635-644. [PMID: 30240194 DOI: 10.1021/acs.biomac.8b01224] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Multiphase (emulsion) gels with internal phase fractions between 0.1 and 0.5 were formulated at low loadings of cellulose nanofibrils (CNF), alginate, and polylactide (PLA). Their properties (rheology and morphology) fitted those of inks used for direct ink writing (DIW). The effect of formulation and composition variables were elucidated after printing cubic scaffolds and other solid designs. The distinctive microstructures that were developed allowed high printing fidelity and displayed limited shrinkage after room temperature and freeze-drying (0 and 5% shrinkage in the out-of-plane and in-plane directions upon freeze-drying, respectively). The CNF added in the continuous phase was shown to be critical to achieve rheology control as an effective interfacial stabilizer and to ensure the printability of the ink toward high structural reliability. We found that the extent of shape retention of the dried scaffolds resulted from the tightly locked internal structure. The PLA that was initially added in the nonpolar or organic phase (0 to 12%) was randomly embedded in the entire scaffold, providing a strong resistance to shrinkage during the slow water evaporation at ambient temperature. No surface collapse or lateral deformation of the dried scaffolds occurred, indicating that the incorporation of PLA limited drying-induced shape failure. It also reduced compression strain by providing better CNF skeletal support, improving the mechanical strength. Upon rewetting, the combination of the hydrophilicity imparted by CNF and alginate together with the highly porous structure of the 3D material and the internal microchannels contributed to high water absorption via capillary and other phenomena (swelling % between ∼400 and 900%). However, no shape changes occurred compared to the initial 3D-printed shape. The swelling of the scaffolds correlated inversely with the PLA content in the precursor emulsion gel, providing a means to regulate the interaction with water given its low surface energy. Overall, the results demonstrate that by compatibilization of the CNF-based hydrophilic and the PLA-based hydrophobic components, it is possible to achieve shape control and retention upon 3D printing, opening the possibility of adopting low-solids inks for DIW into dry objects. The dryable CNF-based 3D structural materials absorb water while being able to support load (high elastic modulus) and maintain the shape upon hydration.
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Affiliation(s)
- Siqi Huan
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Long Bai
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Ville Klar
- Department of Mechanical Engineering, School of Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
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