Nanocellulose and its composite films: Applications, properties, fabrication methods, and their limitations

Shanmugam, Kirubanandan; Browne, Christine

doi:10.1016/b978-0-12-820569-3.00010-4

Cited by 9 publications

(25 citation statements)

References 109 publications

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“…The use of nanotechnology in the production of packaging materials has become increasingly popular [25] . Utilizing nanocellulose as a packaging material offers an innovative solution to replace environmentally harmful synthetic plastics [26] . Thanks to its biodegradability, biocompatibility, and strong mechanical properties, nanocellulose-based packaging materials, alongside other functional materials, are well-suited for specific applications [19] .…”

Section: Nanocellulosementioning

confidence: 99%

Nanocellulose as Sustainable Bio-Nanomaterial for Packaging and Biomedical Applications

Shanmugam,

Chandrasekar,

Balaji

2024

ssr

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Fibrous substrates made of cellulose like paper and paperboard are widely used in packaging. Furthermore, cellulose materials are biodegradable and completely safe for the environment. The water vapor barrier properties of paper and paperboard are limited due to the hydrophilic nature of cellulose fibrils. Paper is frequently combined with other materials, such as plastics, wax, and aluminum to improve its water barrier properties. Unfortunately, these materials lead to significant environmental problems and are difficult to recycle. Nanocellulose has shown the potential of being a substitute natural nanomaterial for creating environmentally friendly and sustainable barrier materials for a range of uses, including food packaging materials and substrates for the development of functional materials. Numerous cellulose sources can be used to create nanocellulose, which offers benefits like a high aspect ratio and tensile strength, making it useful for a variety of applications. The production of nanocellulose is done through a variety of processes. Potential biomedical applications of nanocellulose are tissue engineering, drug delivery, wound dressings, biosensors, implants and prosthetics, and nerve regeneration. Its application in these fields will result in the advancement of medical technology and the improvement of healthcare outcomes. Furthermore, biodegradable materials, barrier coatings, antimicrobial packaging, sustainable packaging solutions, smart packaging, and lightweight, high-strength packaging can all be made with nanocellulose. Nanocellulose-based packaging will improve the sustainability and efficiency of the packaging supply chain while providing environmentally friendly substitutes for conventional packaging materials.

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Section: Nanocellulosementioning

confidence: 99%

Nanocellulose as Sustainable Bio-Nanomaterial for Packaging and Biomedical Applications

Shanmugam,

Chandrasekar,

Balaji

2024

ssr

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“…The penetration of conductive ink on the substrates highly depends on the surface roughness and surface polarity of the base substrate either hydrophobic or hydrophilic [2,20]. The smooth CNF film from spray coating can be a good substrate for electronics to replace synthetic plastics [15].…”

Section: Optical Profiler Images Of Cellulose Nanofiber Filmmentioning

confidence: 99%

“…There are many methods available for fabrication of CNF films namely solvent casting, hot pressing, vacuum filtration etc. [15], Time consumption was more than 24 hours and poor uniformity of the CNF film via solvent casting is unresolvable issue. Vacuum filtration is the conventional process for paper making and CNF film fabrication.…”

Section: Introductionmentioning

confidence: 99%

Spray Coated Cellulose Nanofiber (CNF) Film as an Eco-Friendly Substrate for Flexible and Printed Electronics

Shanmugam

2022

OJES

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Cellulose nanofiber is an eco-friendly nanomaterial used for fabricating various functional materials. It is an alternative for synthetic plastic and other petroleum derived materials. Due to demand of CNF film, fast and rapid method for fabrication of CNF film is required. A new method on spray coating to prepare smooth cellulose nanofiber (CNF) films was developed. In this method, spraying CNF suspension onto a smooth and polished metal surface was carried out and then allowed the spray coated wet film to dry in air under standard laboratory conditions. Spraying has notable advantages such as contour coating and contactless coating with the base substrate. The basis weight and thickness of the CNF film is tailorable by adjusting CNF suspension in spraying process. CNF film prepared via spray coating has unique two-sided surface roughness with the surface in contact with the base substrate or metal side much smoother than the air-contact side. The surface roughness is one of the controlling parameter in the application of the CNF film as a substrate for flexible and printed electronics. The RMS roughness of the two surfaces investigated by Optical Profilometry [OP] was found to be 2087 nm on the rough side and 389 nm on the spray coated side, respectively. The spray coated CNF film has ultra-high smoothness on the side exposed to the polished stainless steel surface. The factors including the size of cellulose fibrils and surface smoothness of base surface that control the roughness of the film are currently being investigated and will be discussed in this chapter. The surface smoothness requirements for substrate applications in flexible and printed electronics will be discussed.

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“…Hence, they have the potential to replace some of the synthetic polymeric materials that cause serious environmental problems [1]. However, persisting problems faced during CNF film preparation include low-energy consumption and rapidity in fabrication [15]. CNF films were prepared by vacuum filtration, casting and spray coating.…”

Section: Introductionmentioning

confidence: 99%

“…CNF films were prepared by vacuum filtration, casting and spray coating. However, these methods are time-consuming processes, and the films are low in weight and thickness [15,16]. Even though these processes could be efficient in the way of producing better quality of films, they have constraints in the scaling-up process in large-scale production for technology transfer and commercialization of the free-standing films [15].…”

Section: Introductionmentioning

confidence: 99%

Spray-Coated Cellulose Nanofiber Films: Preparation, Characterization and Application

Shanmugam

2024

Nanotechnology and Nanomaterials

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Spraying cellulose nanofibers on the polished stainless-steel plate is a novel approach for the fabrication of free-standing cellulose nanofiber film (CNF). Recently, free-standing cellulose nanofiber film has gained attention as an alternative to synthetic plastic film. Free-standing/self-standing CNF film can be used as a potential barrier, in packaging application, as membranes for waste water application, in fabrication of biomedical film for wound repair and many more such applications in the fabrication of functional materials. To hasten the production of free-standing CNF film, spraying process is a considerable process-intensified method for large-scale production of film in a rapid manner. Spraying CNF on the stainless-steel plate produces the film with unique surfaces, namely a rough surface exposed to air and a smooth surface from the steel surface. The smooth surface of the film is very shiny and glossy and provides a platform for utilizing this smoothness for fabricating the functional materials such as a base substrate for flexible electronics and solar cells, etc. This chapter summarizes the production of free-standing CNF film via spraying and its characterization linked to its application.

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Nanocellulose and its composite films: Applications, properties, fabrication methods, and their limitations

Cited by 9 publications

References 109 publications

Nanocellulose as Sustainable Bio-Nanomaterial for Packaging and Biomedical Applications

Nanocellulose as Sustainable Bio-Nanomaterial for Packaging and Biomedical Applications

Spray Coated Cellulose Nanofiber (CNF) Film as an Eco-Friendly Substrate for Flexible and Printed Electronics

Spray-Coated Cellulose Nanofiber Films: Preparation, Characterization and Application

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