Fabrication of ultrathin nanocellulose shells on tough microparticles<i>via</i>an emulsion-templated colloidal assembly: towards versatile carrier materials

Fujisawa, Shuji; Togawa, Eiji; Kuroda, Katsushi; Saito, Tsuguyuki; Isogai, Akira

doi:10.1039/c9nr02612f

Cited by 31 publications

(29 citation statements)

References 38 publications

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“…This method enabled the loading of pH-responsive compounds, such as methylene blue, using polystyrene as a matrix. The carboxyl groups of the CNF shell showed pH-dependent properties and strong adsorption and drug release behavior [ 46 ]. Chemical or biological receptors can also be integrated to provide selectivity for sensing applications.…”

Section: Nanocellulose: Preparation Treatment Functionality and 3d Printabilitymentioning

confidence: 99%

“…Even though 3D-printable nanocellulose-based composites are still in their infancy, there has been an increase in their applications in different fields ranging from biomedicine, including wound dressing, drug release, and tissue engineering, sensors, food, and packaging, to energy storage and electronics, with growing interest in other areas as well [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ], summarized in Figure 6 . This section discusses the recent development in 3D-printed nanocellulose-based composites for food, environmental, food packaging, energy, and electrochemical applications.…”

Section: Applications Of 3d-printed Nanocellulose-based Materialsmentioning

confidence: 99%

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3D-Printable Nanocellulose-Based Functional Materials: Fundamentals and Applications

2021

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Nanomaterials obtained from sustainable and natural sources have seen tremendous growth in recent times due to increasing interest in utilizing readily and widely available resources. Nanocellulose materials extracted from renewable biomasses hold great promise for increasing the sustainability of conventional materials in various applications owing to their biocompatibility, mechanical properties, ease of functionalization, and high abundance. Nanocellulose can be used to reinforce mechanical strength, impart antimicrobial activity, provide lighter, biodegradable, and more robust materials for packaging, and produce photochromic and electrochromic devices. While the fabrication and properties of nanocellulose are generally well established, their implementation in novel products and applications requires surface modification, assembly, and manufacturability to enable rapid tooling and scalable production. Additive manufacturing techniques such as 3D printing can improve functionality and enhance the ability to customize products while reducing fabrication time and wastage of materials. This review article provides an overview of nanocellulose as a sustainable material, covering the different properties, preparation methods, printability and strategies to functionalize nanocellulose into 3D-printed constructs. The applications of 3D-printed nanocellulose composites in food, environmental, and energy devices are outlined, and an overview of challenges and opportunities is provided.

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Section: Nanocellulose: Preparation Treatment Functionality and 3d Printabilitymentioning

confidence: 99%

Section: Applications Of 3d-printed Nanocellulose-based Materialsmentioning

confidence: 99%

3D-Printable Nanocellulose-Based Functional Materials: Fundamentals and Applications

2021

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“…Several studies on polymer composite preparation through Pickering emulsions have been reported, where nanocelluloses [22,23], microfibrillated lignocellulose [24], or chitin nanofibrils [25][26][27] were used as stabilizers. Furthermore, we report the synthesis of core-shell microparticles using this Pickering emulsion as a template [28].…”

Section: Introductionmentioning

confidence: 99%

Material design of nanocellulose/polymer composites via Pickering emulsion templating

Fujisawa

2020

Polym J

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Cellulose nanofiber (CNF) is a crystalline fiber composed of a bundle of cellulose molecular chains and is expected to be used as a new biomass-derived nanomaterial. The CNF has a unique morphology: a few to tens of nanometer width and a submicrometer to micrometer length. Its application to various materials, in particular its utilization as a polymer reinforcing material, has been anticipated due to its excellent mechanical properties. However, CNFs and plastics are generally hard to mix, and thus, it is difficult to combine them at the nanolevel. In this review, we describe the CNF/polymer nanocompositing process from Pickering emulsion. We use ~3 nm-wide wood-derived CNFs and report on the preparation of CNF/polymer homogenous composite films. We also introduce a new type of CNF/polymer composite, a core-shell microparticle, using this Pickering emulsion as a template.

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“…was easily formed in water (Figure 11c). [ 166–172 ] The homogenous mixing was done free of any extra chemicals, such as surfactant or dispersant, just by employing a high shearing energy. [ 166–169,171 ] The nanocellulose‐covered resin droplets were retrieved after removing water by casting or vacuum‐filtration like a “paper‐making process.” The obtained “raw” nanocomposite films were further processed by hot‐compression to yield highly optically transparent (≈85% @ 4–25 wt% nanocellulose) and 3D‐moldable nanocomposite films.…”

Section: Nonmodification Interface Engineeringmentioning

confidence: 99%

“…[ 175,176 ] Also, by using Pickering‐stabilizing process, robust nanocellulose‐shell (ultrathin thickness of <50 nm) capsules were prepared that might find potential application in drug delivery and food applications. [ 170,177 ]…”

Section: Nonmodification Interface Engineeringmentioning

confidence: 99%

Surface and Interface Engineering for Nanocellulosic Advanced Materials

et al. 2020

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How do trees support their upright massive bodies? The support comes from the incredibly strong and stiff, and highly crystalline nanoscale fibrils of extended cellulose chains, called cellulose nanofibers. Cellulose nanofibers and their crystalline parts—cellulose nanocrystals, collectively nanocelluloses, are therefore the recent hot materials to incorporate in man‐made sustainable, environmentally sound, and mechanically strong materials. Nanocelluloses are generally obtained through a top‐down process, during or after which the original surface chemistry and interface interactions can be dramatically changed. Therefore, surface and interface engineering are extremely important when nanocellulosic materials with a bottom‐up process are fabricated. Herein, the main focus is on promising chemical modification and nonmodification approaches, aiming to prospect this hot topic from novel aspects, including nanocellulose‐, chemistry‐, and process‐oriented surface and interface engineering for advanced nanocellulosic materials. The reinforcement of nanocelluloses in some functional materials, such as structural materials, films, filaments, aerogels, and foams, is discussed, relating to tailored surface and/or interface engineering. Although some of the nanocellulosic products have already reached the industrial arena, it is hoped that more and more nanocellulose‐based products will become available in everyday life in the next few years.

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Fabrication of ultrathin nanocellulose shells on tough microparticlesviaan emulsion-templated colloidal assembly: towards versatile carrier materials

Abstract: Ultrathin nanocellulose shells are constructed on the surface of polymer microparticles by an emulsion-templated self-assembly. The shell renders the microparticles biocompatible and highly dispersible in water with molecular recognition properties.

Cited by 31 publications

References 38 publications

3D-Printable Nanocellulose-Based Functional Materials: Fundamentals and Applications

3D-Printable Nanocellulose-Based Functional Materials: Fundamentals and Applications

Material design of nanocellulose/polymer composites via Pickering emulsion templating

Surface and Interface Engineering for Nanocellulosic Advanced Materials

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