Materials chemistry and the futurist eco-friendly applications of nanocellulose: Status and prospect

Mishra, Raghvendra Kumar; Sabu, Arjun; Tiwari, Santosh K.

doi:10.1016/j.jscs.2018.02.005

Cited by 294 publications

(167 citation statements)

References 240 publications

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“…The use of nanocellulose makes paper stronger because the nanocellulose particles fill the empty space between fibers, thereby increasing the number of fiber-fiber bonds and, as a result, boost the hydrogen bonds during consolidation and drying of the fiber network [12,30]. These conclusions are confirmed by SEM images of the surface and cross-section of paper samples made from unbleached pulp and from waste paper with and without the application of nanocellulose on its surface (Fig.…”

Section: Paper For Bagssupporting

confidence: 56%

Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

2020

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We present the study of the preparation of pulp and nanocellulose from Miscanthus × giganteus to improve the quality of the paper for bags. The organosolv miscanthus pulp (OMP) was prepared by the environmentally friendly organosolv method-cooking in a solution of peracetic acid at the first stage and the alkaline treatment at the second stage. Nanocellulose was obtained by hydrolysis of never-dried OMP and subsequent ultrasonic treatment. Structural changes and crystallinity index of OMP and nanocellulose were studied by SEM and FTIR methods. X-ray diffraction analysis confirmed an increase in the crystallinity of OMP and nanocellulose as a result of thermochemical treatment. The nanocellulose had a density of up to 1.6 g/cm 3 , transparency up to 82%, a crystallinity index of 76.5%, and tensile strength up to 195 MPa. The AFM showed that the particles of nanocellulose have a diameter in the range from 10 to 20 nm. A TGA analysis confirmed that nanocellulose films have a denser structure and lower mass loss in the temperature range 320-440 °C compared to OMP. We established the positive effect of nanocellulose application on the physical and mechanical properties of paper for bags. The application of nanocellulose allows replacing synthetic reinforcing materials and more expensive sulfate unbleached pulp with waste paper in the production of paper and cardboard.

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Section: Paper For Bagssupporting

confidence: 56%

Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

2020

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“…Both of them have a fibrillar shape with amorphous and crystalline domains. The difference between them is the actual dimensions of the fibrils: in the first case the fibrils have a diameter of 5–60 nm and a length of several micrometers, while in the second case, the fibrils have a diameter of hundreds of nanometers and a length of tens of microns . One of the main issues about compounding cellulose and polymers is obtaining a well‐dispersed and distributed filler, without aggregations, and a good adhesion between the hydrophobic matrix and the hydrophilic filler.…”

Section: Introductionmentioning

confidence: 99%

New biocomposite obtained using poly(3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate) (PHBH) and microfibrillated cellulose

Giubilini

Sciancalepore

Messori

et al. 2020

J of Applied Polymer Sci

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This research evaluates the effects of filler content and silanization on thermal, morphological and mechanical properties of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH)-based composites. Microfibrillated cellulose (MFC) was obtained by a mechanical treatment of high-pressure homogenization, starting from oat hull fiber, a byproduct of the agri-food sector. MFC reinforced PHBH composites were prepared by melt compounding. SEM and FT-IR analysis showed a good dispersion of the filler in the polymeric matrix, denoting the effectiveness of the surface silanization process. The thermal stability of PHBH composites remains substantially unchanged, and the glass transition temperature marginally increases with the increase of the filler content. Furthermore, silanized MFC shows slightly reinforcing mechanical effects on PHBH composites, such as the increase of 10% of the Young modulus with an increase of the maximum tensile stress as well. This finding has an economical interest since the results showed that MFC, deriving from a byproduct, can be successfully used as filler, decreasing the cost of the bio-based compound leaving substantially unaltered its mechanical and thermal properties.

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“…Nanocellulose is a considered to be a new generation of nanomaterials that combines important cellulose properties, including high specific strength, hydrophilicity, low density, flexibility and chemical inertness, with the ability to be chemically modified to incorporate specific features at the nanoscale [120,121]. In biomedicine, its exceptional water-retention capacity and large surface area that are associated with enhanced cell attachment, proliferation, and migration with no reports of toxic responses, has increased its desirability for a variety of uses that include packages, membranes for hemodialysis, vascular grafts, drug delivery systems, wound dressings, and tissue engineering strategies [122][123][124].…”

Section: Nanocellulosementioning

confidence: 99%

Electrospun Nanocomposites Containing Cellulose and Its Derivatives Modified with Specialized Biomolecules for an Enhanced Wound Healing

et al. 2020

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Wound healing requires careful, directed, and effective therapies to prevent infections and accelerate tissue regeneration. In light of these demands, active biomolecules with antibacterial properties and/or healing capacities have been functionalized onto nanostructured polymeric dressings and their synergistic effect examined. In this work, various antibiotics, nanoparticles, and natural extract-derived products that were used in association with electrospun nanocomposites containing cellulose, cellulose acetate and different types of nanocellulose (cellulose nanocrystals, cellulose nanofibrils, and bacterial cellulose) have been reviewed. Renewable, natural-origin compounds are gaining more relevance each day as potential alternatives to synthetic materials, since the former undesirable footprints in biomedicine, the environment, and the ecosystems are reaching concerning levels. Therefore, cellulose and its derivatives have been the object of numerous biomedical studies, in which their biocompatibility, biodegradability, and, most importantly, sustainability and abundance, have been determinant. A complete overview of the recently produced cellulose-containing nanofibrous meshes for wound healing applications was provided. Moreover, the current challenges that are faced by cellulose acetate- and nanocellulose-containing wound dressing formulations, processed by electrospinning, were also enumerated.

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Materials chemistry and the futurist eco-friendly applications of nanocellulose: Status and prospect

Cited by 294 publications

References 240 publications

Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

New biocomposite obtained using poly(3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate) (PHBH) and microfibrillated cellulose

Electrospun Nanocomposites Containing Cellulose and Its Derivatives Modified with Specialized Biomolecules for an Enhanced Wound Healing

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