Clean and reactive nanostructured cellulose surface

Österberg, Monika; Peresin, María Soledad; Johansson, Leena‐Sisko; Tammelin, Tekla

doi:10.1007/s10570-013-9920-8

Cited by 23 publications

(20 citation statements)

References 29 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…EAN was prepared by means of a procedure reported in the literature . In brief, an equimolar amount of nitric acid was added dropwise to a solution of ethylamine in round bottom flask (RBF) with constant stirring in an ice bath until addition was complete.…”

Section: Methodsmentioning

confidence: 99%

“…EAN was prepared by means of ap rocedure reported in the literature. [35] In brief, an equimolar amount of nitric acid was added dropwise to as olution of ethylamine in round bottom flask (RBF) with constant stirring in an ice bath until addition was complete. The resulting solution was then allowed to stir at room temperature for 24 h. Volatile impurities and water were removed by using rotary evaporator at 70 8Cu nder reduced pressure.…”

Section: Synthesis Of Ilsmentioning

confidence: 99%

“…Cellulosei so ne of the major natural and renewable biopolymers extensively used in fabricating advanced polymer-based composite materials, and is adopted in the sustainable production of materials on an industrial scale. [35] The use of natural cellulose fibers as ar einforcement in polymeric composite materials has generatedg reat interest, owing to their high mechanical performance and abundance. [36,37] Apart from cellulose, lignin presenti nl ignocellulosic plants contains aromatic rings and UV-absorbing functional groups.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Green and Efficient Processing of Cinnamomum cassia Bark by Using Ionic Liquids: Extraction of Essential Oil and Construction of UV‐Resistant Composite Films from Residual Biomass

Mehta

Kumar

2017

Chemistry An Asian Journal

View full text Add to dashboard Cite

There is significant interest in the development of a sustainable and integrated process for the extraction of essential oils and separation of biopolymers by using novel and efficient solvent systems. Herein, cassia essential oil enriched in coumarin is extracted from Cinnamomum cassia bark by using a protic ionic liquid (IL), ethylammonium nitrate (EAN), through dissolution and the creation of a biphasic system with the help of diethyl ether. The process has been perfected, in terms of higher biomass dissolution ability and essential oil yield through the addition of aprotic ILs (based on the 1-butyl-3-methylimidazolium (C mim) cation and chloride or acetate anions) to EAN. After extraction of oil, cellulose-rich material and free lignin were regenerated from biomass-IL solutions by using a 1:1 mixture of acetone-water. The purity of the extracted essential oil and biopolymers were ascertained by means of FTIR spectroscopy, NMR spectroscopy, and GC-MS techniques. Because lignin contains UV-blocking chromophores, the oil-free residual lignocellulosic material has been directly utilized to construct UV-light-resistant composite materials in conjunction with the biopolymer chitosan. Composite material thus obtained was processed to form biodegradable films, which were characterized for mechanical and optical properties. The films showed excellent UV-light resistance and mechanical properties, thereby making it a material suitable for packaging and light-sensitive applications.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of Ilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Green and Efficient Processing of Cinnamomum cassia Bark by Using Ionic Liquids: Extraction of Essential Oil and Construction of UV‐Resistant Composite Films from Residual Biomass

Mehta

Kumar

2017

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

“… 36 Neat TEMPO-CNF films showed WCA values ∼25°, which are typical for the hydrophilic cellulose surfaces. 37 The wetting behavior of TEMPO-CNF substrate was significantly changed after plasma deposition: equilibrium WCA reached values of ∼105° and ∼70° for HMDSO ( Figure 2 d) and APTES ( Figure S1b ) layers, respectively. These observations are in good accordance with the values reported for the given modification strategies.…”

Section: Resultsmentioning

confidence: 97%

High-Throughput Tailoring of Nanocellulose Films: From Complex Bio-Based Materials to Defined Multifunctional Architectures

Khakalo

Mäkelä

Johansson

et al. 2020

ACS Appl. Bio Mater.

Self Cite

View full text Add to dashboard Cite

This paper demonstrates a high-throughput approach to fabricate nanocellulose films with multifunctional performance using conventionally existing unit operations. The approach comprises cast-coating and direct interfacial atmospheric plasma-assisted gas-phase modification along with the microscale patterning technique (nanoimprint lithography, NIL), all applied in roll-to-roll mode, to introduce organic functionalities in conjunction with structural manipulation. Our strategy results in multifunctional cellulose nanofibrils (CNF) films in which the high optical transmittance (∼90%) is retained while the haze can be adjusted (2–35%). Concomitantly, the hydrophobic/hydrophilic balance can be tuned (50–21 mJ/m 2 with the water contact angle ranging from ∼20 up to ∼120°), while intrinsic hygroscopicity of CNF films is not significantly compromised. Therefore, a challenge to produce multifunctional bio-based materials with properties defined by various high-performance applications conjoined to the lack of efficient processing strategies is elucidated. Overall, economically and ecologically viable strategy, which was realized by facile and upscalable unit operations using the R2R technology, is introduced to expand the properties’ spaces and thus offer a vast variety of interesting applications for CNF films.

show abstract

“…A simple solvent-free technique based on UV/O 3 treatment enhanced significantly the reactivity and accessibility of cellulose hydroxyl groups thus increasing its hydrophilicity and simultaneously facilitating its more efficient functionalization (29).…”

Section: Cellulose Nanoparticlesmentioning

confidence: 99%

Cellulose Nanocomposites

Feldman

2015

Journal of Macromolecular Science, Part A

View full text Add to dashboard Cite

Cellulose is a linear polysaccharide and one of the world's most abundant biopolymers. It is one of the renewable biopolymers being studied to reduce the dependence on non-renewable mineral oil based products. Cellulose can be used in different kinds of composites, including the recent nanocomposites.The production of nanoscale cellulose fibers and their use in polymer composites gained increasing attention due to their interesting properties and potential applications. This review paper is trying to cover studies done to use various forms of cellulose as reinforcement for different polymers, as matrix, as reinforcement and matrix for the same nanocomposite and as a component in polyblend nanocomposites beside other polymers.

show abstract

Clean and reactive nanostructured cellulose surface

Cited by 23 publications

References 29 publications

Green and Efficient Processing of Cinnamomum cassia Bark by Using Ionic Liquids: Extraction of Essential Oil and Construction of UV‐Resistant Composite Films from Residual Biomass

Green and Efficient Processing of Cinnamomum cassia Bark by Using Ionic Liquids: Extraction of Essential Oil and Construction of UV‐Resistant Composite Films from Residual Biomass

High-Throughput Tailoring of Nanocellulose Films: From Complex Bio-Based Materials to Defined Multifunctional Architectures

Cellulose Nanocomposites

Contact Info

Product

Resources

About