Cellulose nanostructures from wood waste with low input consumption

Bauli, Clara R.; Rocha, Daniel Belchior; Oliveira, Sueli Aparecida de; Rosa, Derval dos Santos

doi:10.1016/j.jclepro.2018.11.099

Cited by 61 publications

(27 citation statements)

References 59 publications

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“…The obtained nanostructures were characterized and reported previously [26], confirming their nanocrystallike structure. The hydrodynamic radius (R H ) of the P and N samples in water ( Fig.…”

Section: Resultssupporting

confidence: 83%

“…This degradation behavior of the composites indicates that addition of the reinforcement tended to reduce the degradation rate in the long term, suggesting the possibility of controlling the degradation of the polymer and expanding its applications. The N samples represent a new material due to the low consumption of reagents during production of the nanostructure [26]. The obtained composites offer good mechanical properties together with thermal stability and low degradation.…”

Section: Resultsmentioning

confidence: 99%

“…Lignocellulosic residue (Pinus taeda sawdust) smaller than 50 mesh was separated into two groups, pretreated and non-pretreated; their preparation was reported previously [26]. Two alkaline steps were applied for pretreatment of the former residue: application of solution of calcium hypochlorite 1% (wt./wt.)…”

Section: Preparation Of Cellulose Nanostructuresmentioning

confidence: 99%

“…This process was applied to both the pretreated and nonpretreated samples. The resulting solutions were heated to 100 °C for enzyme denaturation [26]. The nanostructures were centrifuged for 15 min at 10 °C and 16,000 rpm, and the supernatant volume was removed and replaced with distilled water to remove the buffer solution; this process was repeated three times.…”

Section: Preparation Of Cellulose Nanostructuresmentioning

confidence: 99%

“…Whether the usual removal of recalcitrant elements from wood flour is necessary to obtain suitable composites was also evaluated. Production of CNS without pretreatment is an environmentally friendly process, saving consumables and energy and reducing generation of residues [26], representing an attractive option to achieve reinforcement of bionanocomposites.…”

Section: Introductionmentioning

confidence: 99%

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Composite films of ecofriendly lignocellulosic nanostructures in biodegradable polymeric matrix

2019

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Cellulose nanostructures (CNS) are an alternative for reinforcement of biodegradable polymers. However, the usual process applied to obtain them is environmentally harmful, generating chemical wastes, mostly in the lignin removal process. In this work, bionanocomposites reinforced with CNS were obtained using a process with lower environmental impact, viz. enzymatic hydrolysis of Pinus wood, with or without alkaline pretreatment for lignin removal. They were then incorporated into poly(butylene adipate-co-terephthalate) (PBAT) at 1%, 3%, and 5% (wt./wt.) by a solvent casting process with a nonionic surfactant as surface modification agent. The properties of the obtained composites indicated that pretreatment for lignin removal was not necessary to improve the mechanical properties. The isolated nature of the CNS led to a better distribution in the casting process and similar mechanical properties, with an increase in the Young's modulus by 16%. Addition of the surfactant helped improve the dispersion of the reinforcement but did not affect the mechanical properties. The interaction with water was affected by the addition of surfactant, which resulted in a hydrophilic composite and influenced its post-use degradation. The results of this work confirm that it is possible to produce CNS composites without excessive consumption of reagents and that their properties can be modified for use in different packaging applications.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Preparation Of Cellulose Nanostructuresmentioning

confidence: 99%

Section: Preparation Of Cellulose Nanostructuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Composite films of ecofriendly lignocellulosic nanostructures in biodegradable polymeric matrix

2019

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Polymer Nanocomposites Filled in Nanocellulose and Cellulose‐whiskers

de Oliveira Silva,

Camani,

dos Santos Rosa

2024

Chemical Physics of Polymer Nanocomposites

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Biomass‐based functional separators for rechargeable batteries

Xia,

Wang,

et al. 2024

Battery Energy

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The global transition toward sustainable energy sources has prompted a paradigm shift in the field of energy storage. The separator is an important component in rechargeable batteries, which facilitates the rapid passage of ions and ensures the safety and efficiency of the electrochemical process by preventing direct contact between the anode and cathode. Traditional polyolefin‐based separators induce environmental concerns due to their nonbiodegradable nature. Biomass‐based separators derived from renewable sources such as plant fibers, agricultural waste, and biopolymers have emerged as promising alternatives to traditional polymer separators. In this review, we summarize the current state and development of biomass‐based separators for high‐performance batteries, including innovative manufacturing techniques, novel biomass materials, functionalization strategies, performance evaluation methods, and potential applications. The review also delves into the environmental impact and sustainability analysis of biomass‐based separators, offering insights into the potential of biomass as the most sustainable resource for future energy storage solutions. This review could provide a holistic understanding of the advancements and potential of biomass‐based separators, shedding light on the path toward sustainable and efficient energy storage based on biomass‐derived separators.

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Cellulose nanostructures from wood waste with low input consumption

Cited by 61 publications

References 59 publications

Composite films of ecofriendly lignocellulosic nanostructures in biodegradable polymeric matrix

Composite films of ecofriendly lignocellulosic nanostructures in biodegradable polymeric matrix

Polymer Nanocomposites Filled in Nanocellulose and Cellulose‐whiskers

Biomass‐based functional separators for rechargeable batteries

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