Extraction and characterization of cellulose nanowhiskers from Mandacaru (Cereus jamacaru DC.) spines

Nepomuceno, Neymara C.; Santos, Amélia S.F.; Oliveira, Juliano Elvis de; Glenn, Gregory M.; Medeiros, Eliton S.

doi:10.1007/s10570-016-1109-5

Cited by 41 publications

(14 citation statements)

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“…The maximum processing temperature of nanocellulosebased composites depends on its thermal characteristics. Nepomuceno et al detailed that understanding the thermal behavior of nanocellulose is essential, particularly during the processing of nanocellulose and polymer composites (Nepomuceno et al, 2017). Since nanocellulose decompose at a temperature around 200-300 • C, the processing temperature should be controlled at ∼200 • C to prevent the degradation of nanocellulose.…”

Section: Properties and Surface Modification Of Nanocellulose Charactmentioning

confidence: 99%

Nanocellulose: From Fundamentals to Advanced Applications

et al. 2020

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Over the past few years, nanocellulose (NC), cellulose in the form of nanostructures, has been proved to be one of the most prominent green materials of modern times. NC materials have gained growing interests owing to their attractive and excellent characteristics such as abundance, high aspect ratio, better mechanical properties, renewability, and biocompatibility. The abundant hydroxyl functional groups allow a wide range of functionalizations via chemical reactions, leading to developing various materials with tunable features. In this review, recent advances in the preparation, modification, and emerging application of nanocellulose, especially cellulose nanocrystals (CNCs), are described and discussed based on the analysis of the latest investigations (particularly for the reports of the past 3 years). We start with a concise background of cellulose, its structural organization as well as the nomenclature of cellulose nanomaterials for beginners in this field. Then, different experimental procedures for the production of nanocelluloses, their properties, and functionalization approaches were elaborated. Furthermore, a number of recent and emerging uses of nanocellulose in nanocomposites, Pickering emulsifiers, wood adhesives, wastewater treatment, as well as in new evolving biomedical applications are presented. Finally, the challenges and opportunities of NC-based emerging materials are discussed.

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Section: Properties and Surface Modification Of Nanocellulose Charactmentioning

confidence: 99%

Nanocellulose: From Fundamentals to Advanced Applications

et al. 2020

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“…It is also important to understand the thermal behavior of nanocellulose during the compounding and extrusion of nanocellulose and thermoplastic composites. The decomposition temperature of nanocellulose is approximately 200–300 °C; thus, the compounding temperature has to be controlled at approximately 200 °C during the manufacturing process in order to prevent the degradation of nanocellulose . Differences in the source of nanocellulose, types of matrices, processing techniques, and the drying process could affect the thermal stability of the nanocomposites.…”

Section: Thermal Properties Of Nanocellulose Compositesmentioning

confidence: 99%

Thermal properties of nanocellulose‐reinforced composites: A review

Gan

Sam

Abdullah

et al. 2019

J of Applied Polymer Sci

201

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Nanocellulose has received increasing attention in science and industry in recent years as a nanoscale material for the reinforcement of polymer matrix composites due to its superior mechanical properties, renewability, and biodegradability. New nanocellulose sources, modifications, and treatments are under development to reduce the high energy required during production and to create a more suitable industrial-scale production process. Thus, this paper reviews plant-based nanocellulose composites and their properties, with a focus on their thermal-related characteristics. The purpose of this review is to establish for readers the impact of the incorporation of nanocellulose on the thermal and dynamic mechanical properties of nanocellulose composites. Understanding of the thermal properties is important for researchers to assess the suitability of the nanocomposites for a variety of applications in response to new and evolving societal requirements.The first NFC was produced from wood by using high-pressure homogenization without any pretreatment. 11,12 However, this method is a very energy-intensive process. Therefore, chemical treatments such as 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation combined with mechanical and chemical

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“…where M f = final mass of crucible containing ash and M i = initial mass of crucible Lignin and holocellulose (cellulose + hemicellulose) of PP were determined following the TAPPI standard T13m-54 and T19m-54, respectively (Nepomuceno et al, 2017). For the insoluble lignin, 1 g of PP was left under stirring in 15 mL of 72 % sulfuric acid for 24 h and then under reflux for 4 h. The suspension was then filtered using previously weighed glass filters and oven dried at 50 °C for 48 h. The lignin content was identified by the difference between the dry filter weight containing lignin and the empty dry filter weight.…”

Section: Chemical Characterizationmentioning

confidence: 99%