Highly tunable bioadhesion and optics of 3D printable PNIPAm/cellulose nanofibrils hydrogels

Sun, Xiaohang; Tyagi, Preeti; Agate, Sachin; McCord, Marian; Lucia, Lucian A.; Pal, Lokendra

doi:10.1016/j.carbpol.2020.115898

Cited by 65 publications

(43 citation statements)

References 51 publications

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“…[ 215 ] CNF hybrid hydrogels with PNIPAm facilitate reversible optical, bioadhesion, and thermal performance, making them suitable to be used as durable temperature‐sensitive sensors and functional biomedical devices. [ 272 ] Recently gluing was achieved using evaporation‐induced self‐assembly of CNCs. Through this process, CNCs become aligned, thus providing anisotropic adhesion, offering strong gluing of a wealth of materials (Figure 10b).…”

Section: Nanocellulose‐based Hybrid and Functional Hydrogelsmentioning

confidence: 99%

Nanocellulose: Recent Fundamental Advances and Emerging Biological and Biomimicking Applications

et al. 2020

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In the effort toward sustainable advanced functional materials, nanocelluloses have attracted extensive recent attention. Nanocelluloses range from rod‐like highly crystalline cellulose nanocrystals to longer and more entangled cellulose nanofibers, earlier denoted also as microfibrillated celluloses and bacterial cellulose. In recent years, they have spurred research toward a wide range of applications, ranging from nanocomposites, viscosity modifiers, films, barrier layers, fibers, structural color, gels, aerogels and foams, and energy applications, until filtering membranes, to name a few. Still, nanocelluloses continue to show surprisingly high challenges to master their interactions and tailorability to allow well‐controlled assemblies for functional materials. Rather than trying to review the already extensive nanocellulose literature at large, here selected aspects of the recent progress are the focus. Water interactions, which are central for processing for the functional properties, are discussed first. Then advanced hybrid gels toward (multi)stimuli responses, shape‐memory materials, self‐healing, adhesion and gluing, biological scaffolding, and forensic applications are discussed. Finally, composite fibers are discussed, as well as nanocellulose as a strategy for improvement of photosynthesis‐based chemicals production. In summary, selected perspectives toward new directions for sustainable high‐tech functional materials science based on nanocelluloses are described.

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Section: Nanocellulose‐based Hybrid and Functional Hydrogelsmentioning

confidence: 99%

Nanocellulose: Recent Fundamental Advances and Emerging Biological and Biomimicking Applications

et al. 2020

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“…DLP‐printing strain‐sensing technology based on photocuring refers to the utilization of ultraviolet for irradiating precursors in the mixture of photocurable resins, corresponding crosslinkers and catalysts, which could be selected according to the configurations of strain sensors and crosslinking mechanisms including radical polymerization and cationic photocuring. [ 90 ] The in situ crosslinking would be initiated to achieve 3D molding subsequently. Free radicals could be generated with the help of photoinitiators, inducing the polymerization of monomers and prepolymers, while cationic photoinitiators are irradiated to produce protonic acids, which catalyze the polymerization to cure the resins.…”

Section: Progress On 3d Printed Strain Sensorsmentioning

confidence: 99%

3D Printed Flexible Strain Sensors: From Printing to Devices and Signals

et al. 2021

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The revolutionary and pioneering advancements of flexible electronics provide the boundless potential to become one of the leading trends in the exploitation of wearable devices and electronic skin. Working as substantial intermediates for the collection of external mechanical signals, flexible strain sensors that get intensive attention are regarded as indispensable components in flexible integrated electronic systems. Compared with conventional preparation methods including complicated lithography and transfer printing, 3D printing technology is utilized to manufacture various flexible strain sensors owing to the low processing cost, superior fabrication accuracy, and satisfactory production efficiency. Herein, up-to-date flexible strain sensors fabricated via 3D printing are highlighted, focusing on different printing methods based on photocuring and materials extrusion, including Digital Light Processing (DLP), fused deposition modeling (FDM), and direct ink writing (DIW). Sensing mechanisms of 3D printed strain sensors are also discussed. Furthermore, the existing bottlenecks and future prospects are provided for further progressing research.

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“…186 This technique has been demonstrated on fabricating cellulose nanofibril composite material for bio-adhesion and optics by Sun and co-workers. 187 A hybrid poly(N-isopropylacrylamide) (PNIPAm)/CNF hydrogel was fabricated via inverted SLA with tuned bio-adhesive and optical properties. An impressive 8 o C reduction in lower critical solution temperature was achieved with the incorporation of just 2.0 wt% of CNF, possessing controllable bio-adhesion in response to change in temperature.…”

Section: 2mentioning

confidence: 99%

Recent advances in 3D printing of nanocellulose: structure, preparation, and application prospects

2021

Nanoscale Adv.

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Highly tunable bioadhesion and optics of 3D printable PNIPAm/cellulose nanofibrils hydrogels

Cited by 65 publications

References 51 publications

Nanocellulose: Recent Fundamental Advances and Emerging Biological and Biomimicking Applications

Nanocellulose: Recent Fundamental Advances and Emerging Biological and Biomimicking Applications

3D Printed Flexible Strain Sensors: From Printing to Devices and Signals

Recent advances in 3D printing of nanocellulose: structure, preparation, and application prospects

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