3D-oriented fiber networks made by foam forming

Alimadadi, Majid; Uesaka, Tetsu

doi:10.1007/s10570-015-0811-z

Cited by 49 publications

(57 citation statements)

References 23 publications

(20 reference statements)

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“…The number of bonds a fiber makes with neighboring fibers at low densities is different from that for thin sheets. 3DFNs also retain their integrity more easily than sheets (Alimadadi and Uesaka 2016). Moreover, 3DFNs show a unique and much higher deformation recovery compared with paper and some nonwoven sheets.…”

Section: Introductionmentioning

confidence: 95%

“…In simple terms, it combines the ability of water to act as a strong cellulose binder with the ability of bubbles to tailor a porous structure and prevent fiber flocking. Lately, the technology has been intensely studied in the preparation of sheet structures (Radvan and Gatward 1972;Lehmonen et al 2013) and bulk materials (Madani et al 2014;Alimadadi and Uesaka 2016) made from wood fibers, especially for filtering (Heydarifard et al 2016) and insulating applications (Poranen et al 2013;Pöhler et al 2016). Forming and subsequent water removal and drying methods have a profound effect on the sheet structure (Timofeev et al 2016;Haffner et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Forming and subsequent water removal and drying methods have a profound effect on the sheet structure (Timofeev et al 2016;Haffner et al 2017). Foam-formed fiber networks can have a much lower density (Madani et al 2014), improved and tailored pore size distribution (Al-Qararah et al 2015a), and more diverse fiber orientation (Alimadadi and Uesaka 2016) compared with similar water-formed materials.…”

Section: Introductionmentioning

confidence: 99%

“…Paper exhibits three types of deformation: linear and non-linear elastic strain, visco-elastic time-dependent recoverable creep, and plastic non-recoverable deformation (Brezinski 1956;Alava and Niskanen 2006). Alimadadi and Uesaka (2016) reported the same phases for foam-formed 3DFNs made from pure thermomechanical (TMP) reject pulp.…”

Section: Introductionmentioning

confidence: 99%

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Improving Compression Recovery of Foam-formed Fiber Materials

et al. 2018

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Foam technology enables the preparation of new fiber-based materials with reduced density and improved mechanical performances. By utilizing multi-scale structural features of the formed fiber network, it is possible to enhance the elasticity of lightweight cellulose materials under compressive loads. Sufficient strength is achieved by optimally combining fibers and fines of different length-scales. Elasticity is improved by adding polymers that accumulate at fiber joints, which help the network structure to recover after compression. This concept was demonstrated using natural rubber as the polymer additive. For a model network of viscose fibers and wood fines, the immediate elastic recovery after 70% compression varied from 60% to 80% from the initial thickness. This was followed by creep recovery, which reached 86% to 88% recovery within a few seconds in cross-linked samples. After 18 h, the creep recovery in those samples was almost complete at up to 97%. A similar improvement was seen for low-density materials formed with chemi-thermomechanical fibers. The formed structure and elastic properties were sensitive not only to the raw materials, but also to the elastomer stiffness and foam properties. The improved strain recovery makes the developed cellulose materials suitable for various applications, such as padding for furniture, panels, mattresses, and insulation materials.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving Compression Recovery of Foam-formed Fiber Materials

et al. 2018

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“…Although the technique has been known since 1974 [1] it has been only very recently that the interactions between fibres and foam have been examined in greater detail. [2,3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Interactions of fibres with simple arrangements of soap films

Whyte

Haffner

Tanaka

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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We present experiments and Surface Evolver simulations concerning the interaction of fibres with simple arrangements of soap films, which constitute model systems for dry foams. For a fibre inserted into a soap film which spans two Plateau borders, our simulation accurately predicts the variation in the length of the film as the fibre thickness is varied. For a fibre introduced into a Plateau border, simulations accurately predict the variation in length of the Plateau border as the fibre diameter is varied, and as it is moved. We suggest that the force necessary to move the fibre from equilibrium may act to inhibit foam coarsening, in line with observations from experiments on fibreladen foams. EUFOAM Proceedings OfficeDublin, 28/10/2016 Dear Editor, Please find enclosed our manuscript entitled: "Interactions of fibres with simple arrangements of soap films" which was presented in the last EUFOAM Conference by David Whyte. This work presents an experimental investigation of the configuration of soap films in the presence of fibre. The data are described both theoretically and numerically. The very good description of our experimental data with our simulations allow to predict the configuration of the films as a function of the features of the fibre.In addition, our observations raise the question of the interaction between foam and fibres at the macroscopic scale, this appears as a promising topic, in particular for industry dealing with novel materials. Thus, we believe our observations should interest the broad community of researcher in fluid mechanics working on foam containing solid material. We therefore would be very excited to see this work published in the EUFOAM Proceedings, which we believe reaches the most relevant audience for our work. AbstractWe present experiments and Surface Evolver simulations concerning the interaction of fibres with simple arrangements of soap films, which constitute model systems for dry foams. For a fibre inserted into a soap film which spans two Plateau borders, our simulation accurately predicts the variation in the length of the film as the fibre thickness is varied. For a fibre introduced into a Plateau border, simulations accurately predict the variation in length of the Plateau border as the fibre diameter is varied, and as it is moved. We suggest that the force necessary to move the fibre from its equilibrium position may act to inhibit foam coarsening, in line with previous observations from experiments on fibre-laden foams.

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Multiscale Design for Robust, Thermal Insulating, and Flame Self‐Extinguishing Cellulose Foam

Sun,

Zheng,

Zhu

et al. 2023

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Cellulose foams are in high demand in an era of prioritizing environmental consciousness. Yet, transferring the exceptional mechanical properties of cellulose fibers into a cellulose network remains a significant challenge. To address this challenge, an innovative multiscale design is developed for producing cellulose foam with exceptional network integrity. Specifically, this design relies on a combination of physical cross–linking of the microfibrillated cellulose (MFC) networks by cellulose nanofibril (CNF) and aluminum ion (Al3+), as well as self‐densification of the cellulose induced by ice‐crystal templating, physical cross–linking, solvent exchange, and evaporation. The resultant cellulose foam demonstrates a low density of 40.7 mg cm–3, a high porosity of 97.3%, and a robust network with high compressive modulus of 1211.5 ± 60.6 kPa and energy absorption of 77.8 ± 1.9 kJ m−3. The introduction of CNF network and Al3+ cross–linking into foam also confers excellent wet stability and flame self‐extinguish ability. Furthermore, the foam can be easily biodegraded in natural environments , re‐entering the ecosystem's carbon cycle. This strategy yields a cellulose foam with a robust network and outstanding environmental durability, opening new possibilities for the advancement of high‐performance foam materials.

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3D-oriented fiber networks made by foam forming

Cited by 49 publications

References 23 publications

Improving Compression Recovery of Foam-formed Fiber Materials

Improving Compression Recovery of Foam-formed Fiber Materials

Interactions of fibres with simple arrangements of soap films

Multiscale Design for Robust, Thermal Insulating, and Flame Self‐Extinguishing Cellulose Foam

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