Nanofibrillated cellulose composites and wood derived scaffolds for functional materials

Keplinger, Tobias; Wang, Xiaoqing; Burgert, Ingo

doi:10.1039/c8ta10711d

Cited by 95 publications

(47 citation statements)

References 125 publications

(143 reference statements)

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“…In particular, these composites are being considered for ballistic armors [ 27 , 28 , 29 , 30 ]. More recently, several researchers have been investigating the NLF waste as a source of nanocrystalline cellulose (NCC) [ 31 , 32 , 33 , 34 , 35 , 36 ], a strong nanomaterial, which can be used to produce several important products, such as nanocomposites, ion exchange membranes, films for electronics devices, and others [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Promising Mechanical, Thermal, and Ballistic Properties of Novel Epoxy Composites Reinforced with Cyperus malaccensis Sedge Fiber

et al. 2020

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Composites reinforced with natural lignocellulosic fibers (NLFs) are gaining relevance as the worldwide demand for renewable and sustainable materials increases. To develop novel natural composites with satisfactory properties, less common NLFs should also be investigated. Among these, the Cyperus malaccensis (CM), a type of sedge fiber, is already used in simple items like ropes, furniture, and paper, but has not yet been investigated as composite reinforcement for possible engineering applications. Therefore, the present work evaluated for the first time the properties of novel epoxy composites incorporated with 10, 20, and 30 vol.% of CM sedge fibers. Tensile, Izod-impact, and ballistic impact tests were performed, as well as Fourier transform infrared (FT-IR) spectroscopy and thermal analysis of the composites. Results disclosed a decrease (−55%) in tensile strengths as compared to the neat epoxy. However, the elastic modulus of the 30 vol.% sedge fiber composite increased (+127%). The total strain and absorbed ballistic energy did not show significant variation. The Izod impact energy of the 30 vol.% composite was found to be 181% higher than the values obtained for the neat epoxy as a control sample. An increase in both stiffness and toughness characterized a reinforcement effect of the sedge fiber. The thermal analysis revealed a slight decrease (−15%) in the degradation temperature of the CM sedge fiber composites compared to the neat epoxy. The glass-transition temperatures were determined to be in the range of 67 to 81 °C.

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Section: Introductionmentioning

confidence: 99%

Promising Mechanical, Thermal, and Ballistic Properties of Novel Epoxy Composites Reinforced with Cyperus malaccensis Sedge Fiber

et al. 2020

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“…[101,102] CNF, extracted from natural cellulose fibers, has a mesoscopic structure with high aspect ratio, high specific surface area, remarkable mechanical properties, and low density. [103][104][105][106][107] Due to the high aspect ratio, CNF can interact strongly with polyols via H-bonding to create a web-like structure. Han et al improved the mechanical properties of PVA/B hydrogels by addition of cellulose nanocrystals (CNCs) and CNFs to the hydrogel composition.…”

Section: Nanocomposite Borax-based Hydrogelsmentioning

confidence: 99%

Self‐healing Polyol/Borax Hydrogels: Fabrications, Properties and Applications

Seidi

Jin

Han

et al. 2020

The Chemical Record

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Self-healing polyol/borax hydrogels have found great applications in various areas; especially in sensors, flexible electronics and biomedical fields. In this review, fabrication and characteristics of various types of borax-based hydrogels are discussed. Mechanical properties and self-healing behaviors of these hydrogels are strongly affected by the types of polyol, ratio of polyol:borax, and concentration of each component. Incorporation of highly polar nanofillers (such as cellulose nanofibers) into hydrogels and fabrication of double-network structures have been employed as the promising strategies for improving the mechanical properties. Other additives have also been examined to generate nanocomposite hydrogels for a wide variety of uses; e. g. polyphenols for developing adhesives, conducting polymers, and hybrid structures based on carbon nanotubes and graphenes for electroconductivity, Ag and ZnO nanoparticles for antibacterial property, and quantum dots for fluorescence.

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“…Functional materials are known to be applicable in a variety of applications including energy storage devices [15], as sensors [16], as actuators [17] in water treatment [18] and in many novel electronic devices [19] for medicine, biotechnology, avionics and defense applications. Recent and old review papers have been material oriented, focusing on specific types of functional materials such as cellulosic materials [20,21], phenolics [22], graphene oxide (GO) [23], metallo-polyelectrolytes [24], carbon-based materials [25,26] and several others [27][28][29][30]. Other review papers have been more application-oriented focusing on a specific application of several functional materials including cancer therapy [31], 3D printing of devices [31], pharmaceuticals [28], photodetectors [32], wastewater treatment [33], catalysis [34] and others [35,36].…”

Section: Types Of Functional Materialsmentioning

confidence: 99%

Functional materials in desalination: A review

2019

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This paper reviews various functional materials used in desalination. Desalination of the abundant seawater resource has emerged as a promising technology to meet the current fresh water demands. For improved performance, often functional materials such as photocatalysts, electrocatalysts, photothermal materials, sorbents, antibacterial materials and magnetic materials are utilized in thermal, membranebased and other desalination technologies. With an aim to provide an insight on the existing research on functional materials and the purpose behind using such in desalination, this review collates different research studies of various functional properties and the subsequent materials utilized for those properties. New generation materials such as carbon nanotubes (CNTs) and graphene form a major part, where they exhibit multiple functionalities with improved water transport properties, and thus have been deemed as very attractive enhancers to the desalination technology. Nevertheless, most of the functional materials, such as nano-TiO2, nano-zeolites, graphene, CNTs and magnetic nanoparticles suffer from several limitations such as specialized synthesis techniques, agglomeration, leaching and environmental and health concerns. This review focuses on such challenges and suggests improvements for enhanced incorporation of these in the desalination technology. Lastly, emerging new technologies, advanced fabrication methods and novel functional hybrid materials are reviewed to equip the readers with the latest research trends. Thus, a comprehensive review is essential which will provide current and future researchers an insight on the importance and significance of utilizing functional materials in various desalination technologies.

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Nanofibrillated cellulose composites and wood derived scaffolds for functional materials

Abstract: We compare functional NFC composites and wood derived scaffolds regarding mechanical performance, electric and magnetic properties as well as oil/water separation and heavy metal remediation.

Cited by 95 publications

References 125 publications

Promising Mechanical, Thermal, and Ballistic Properties of Novel Epoxy Composites Reinforced with Cyperus malaccensis Sedge Fiber

Promising Mechanical, Thermal, and Ballistic Properties of Novel Epoxy Composites Reinforced with Cyperus malaccensis Sedge Fiber

Self‐healing Polyol/Borax Hydrogels: Fabrications, Properties and Applications

Functional materials in desalination: A review

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