Theoretical and experimental study of dissolution mechanism of cellulose

Dias, Yasmin J.; Kolbasov, Alexander; Sinha-Ray, Suman; Pourdeyhimi, Behnam; Yarin, Alexander L.

doi:10.1016/j.molliq.2020.113450

Cited by 27 publications

(13 citation statements)

References 52 publications

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“…The use of traditional petroleum-derived polymers in such cases creates a huge challenge from the viewpoint of sustainability. Therefore, new biopolymers derived from plant, animal, or microbial sources are desirable and explored to substitute petroleum-based plastics, mainly for products of short-term use. − …”

Section: Introductionmentioning

confidence: 99%

Solution-Blown Poly(hydroxybutyrate) and ε-Poly-l-lysine Submicro- and Microfiber-Based Sustainable Nonwovens with Antimicrobial Activity for Single-Use Applications

Dias

Robles

Sinha-Ray

et al. 2021

ACS Biomater. Sci. Eng.

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Antimicrobial nonwovens for single use applications (e.g., diapers, sanitary napkins, medical gauze, etc.) are of utmost importance as the first line of defense against bacterial infections. However, the utilization of petrochemical nondegradable polymers in such nonwovens creates sustainability-related issues. Here, sustainable poly(hydroxybutyrate) (PHB) and ε-poly-l-lysine (ε-PLL) submicro- and microfiber-based antimicrobial nonwovens produced by a novel industrially scalable process, solution blowing, have been proposed. In such nonwovens, ε-PLL acts as an active material. In particular, it was found that most of ε-PLL is released within the first hour of deployment, as is desirable for the applications of interest. The submicro- and microfiber mat was tested against C. albicans and E. coli, and it was found that ε-PLL-releasing microfibers result in a significant reduction of bacterial colonies. It was also found that ε-PLL-releasing antimicrobial submicro- and microfiber nonwovens are safe for human cells in fibroblast culture. Mechanical characterization of these nonwovens revealed that, even though they are felt as soft and malleable, they possess sufficient strength, which is desirable in the end-user applications.

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Section: Introductionmentioning

confidence: 99%

Solution-Blown Poly(hydroxybutyrate) and ε-Poly-l-lysine Submicro- and Microfiber-Based Sustainable Nonwovens with Antimicrobial Activity for Single-Use Applications

Dias

Robles

Sinha-Ray

et al. 2021

ACS Biomater. Sci. Eng.

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“…Cellulose fiber-based filters would also be of significant interest in practical applications. Electrospinning of biopolymer solutions, and in particular, cellulose solutions is also possible [ 25 , 27 , 55 ]. It should be emphasized that electrospinning of cellulose solutions in the Schweizer's reagent, yields nanofibers in the 100–300 nm range [ 55 ], and a further reduction of fiber size seems to be possible.…”

Section: Discussionmentioning

confidence: 99%

Electrospun membranes filtering 100 nm particles from air flow by means of the van der Waals and Coulomb forces

Chen

Yarin

2022

Journal of Membrane Science

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“…2B). The diffraction profile of neat cellulose exhibited characteristics of cellulose I, with peaks at 2θ angles of 14.9°, 16.1°, and 22.0° (Ju et al 2015;Ahvenainen et al 2016;Dias et al 2020). There was no considerable difference in the diffraction profile between the original and the regenerated cellulose, which indicated that the dissolution and regeneration processes had essentially no effect on the formation of the hydrogen bonds of cellulose molecules.…”

Section: X-ray Diffraction Assay Of Betaine-modified Cellulosementioning

confidence: 94%

“…Cellulose, as one of the most abundant natural polymers in the world, has attracted widespread attention. As a three-dimensional structured polymer, cellulose is composed of an anhydroglucose unit (AGU) linked by β-1,4 glycosidic bonds (Dias et al 2020). Natural cellulose has great properties, e.g., sustainability, biodegradability, biocompatibility, high mechanical strength, and versatile chemical functionality, but it lacks chemical degradation resistance and thermal plasticity (Trache et al 2016;He et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Esterification of cellulose with betaine using p-toluenesulfonyl chloride for the in-situ activation of betaine

Liu

Wang

Sun

2021

BioRes

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A novel synthesis method was developed for betaine-modified cellulose ester using a mixed N,N-dimethylacetamide/lithium chloride solvent system; p-toluenesulfonyl chloride was used for the in-situ activation of the betaine. The influence of the reaction temperature and time, as well as the anhydroglucose unit to p-toluenesulfonyl chloride to betaine mass ratio on the degree of substitution of the product was evaluated. Increasing the proportion of betaine and p-toluenesulfonyl chloride was beneficial to the esterification reaction. The degree of substitution was 1.68 at 90 °C for 32 h with an anhydroglucose unit to p-toluenesulfonyl chloride to betaine molar ratio of 1 to 2 to 3. The physicochemical properties of the betaine-modified cellulose were closely related to the degree of substitution. Major changes in the morphologies, crystallinity, thermal properties, porosity, and the average degree of polymerization resulted from the modification. The introduction of betaine made cellulose esters thermally less stable than neat cellulose but more difficult to completely degrade. The crystalline structure of the cellulose esters was destroyed, and the products exhibited a porous nature. Dye sorption studies demonstrated that the betaine-modified cellulose holds the potential of adsorbing anionic substances, which is the premise of its application.

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Theoretical and experimental study of dissolution mechanism of cellulose

Cited by 27 publications

References 52 publications

Solution-Blown Poly(hydroxybutyrate) and ε-Poly-l-lysine Submicro- and Microfiber-Based Sustainable Nonwovens with Antimicrobial Activity for Single-Use Applications

Solution-Blown Poly(hydroxybutyrate) and ε-Poly-l-lysine Submicro- and Microfiber-Based Sustainable Nonwovens with Antimicrobial Activity for Single-Use Applications

Electrospun membranes filtering 100 nm particles from air flow by means of the van der Waals and Coulomb forces

Esterification of cellulose with betaine using p-toluenesulfonyl chloride for the in-situ activation of betaine

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