Cellulose nanofiber-derived efficient stabilizer for oil-in-water high-internal-phase emulsion

Chakrabarty, Arindam; Teramoto, Yoshikuni

doi:10.1007/s10570-021-03948-x

Cited by 15 publications

(13 citation statements)

References 46 publications

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“…32 We took this opportunity to graft amphiphilic PGLE onto CNFs, producing CLAm under the aqueous condition as explained in our previous article. 31 A significantly concentrated aqueous dispersion of CNFs (∼4.5 wt %) was made alkaline using a low concentration of NaOH (0.4 wt % to total mixture), and then, PGLE of different concentrations was added for the reaction to produce CLAm with different degrees of substitution. Since the PGLE segment induced amphiphilicity required for the stabilization of emulsion gels, there should be an effect of its content on the stabilization behavior of CLAm.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…However, in the case of CLAm_2.4, the nanofibrous structure of CNFs was supposed to be destroyed which was confirmed by the WAXD analysis where no crystallinity was observed. 31 Ultimately, the dispersibility of CNFs could be controlled by grafting PGLE that not only provided amphiphilicity to the nanofibers but also introduced steric stability in aqueous dispersion.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Etherification reaction between the primary −OH groups of nanocellulose and an epoxide is a powerful tool to functionalize the nanocellulose surface in aqueous medium . We took this opportunity to graft amphiphilic PGLE onto CNFs, producing CLAm under the aqueous condition as explained in our previous article . A significantly concentrated aqueous dispersion of CNFs (∼4.5 wt %) was made alkaline using a low concentration of NaOH (0.4 wt % to total mixture), and then, PGLE of different concentrations was added for the reaction to produce CLAm with different degrees of substitution.…”

Section: Resultsmentioning

confidence: 99%

“…The CLAm used in this study was prepared by grafting PGLE onto CNFs by one-step etherification reaction under the alkaline condition as reported in our previous article . Describing briefly, at first, a moderately concentrated aqueous dispersion (∼4.5 wt %) of CNFs was obtained by dialyzing the 2 wt % dispersion in 7 wt % polyethylene glycol (mol.…”

Section: Methodsmentioning

confidence: 99%

“…The CLAm used in this study was prepared by grafting PGLE onto CNFs by one-step etherification reaction under the alkaline condition as reported in our previous article. 31 Describing briefly, at first, a moderately concentrated aqueous dispersion (∼4.5 wt %) of CNFs was obtained by dialyzing the 2 wt % dispersion in 7 wt % polyethylene glycol (mol. wt ∼ 20 kDa) aqueous solution for 24 h. About 10 g of this CNF dispersion was weighed out in a 50 mL round-bottom flask and a requisite amount of granular NaOH (∼0.4 wt % in total mixture) was added to CNFs and thoroughly mixed by magnetic stirring.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Efficient Phase-Change Polymer Composite Film from Emulsion Gels Stabilized by Cellulose Nanofiber-Based Amphiphiles

Chakrabarty

Teramoto

2021

ACS Appl. Polym. Mater.

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Phase-change polymers (PCPs), exhibiting solid–solid phase transition, bring advancement to the conventional solid–liquid system for thermal energy storage. Such a system obtained as an aqueous dispersion is recommended for application as a surface coating. However, achieving good colloidal stability with efficient energy-storage performance requires precise process designing. Herein, we developed a film-forming PCP that was synthesized from emulsion gels stabilized by cellulose nanofiber-based amphiphiles (CLAm’s). The CLAm was obtained by grafting an amphiphile at a significantly higher degree (0.2–2.4). Depending on the degree of substitution and type of oil, the CLAm was able to efficiently stabilize o/w emulsion gels containing a very high oil phase (>90.0%) at a concentration of about 0.1 wt %. The PCPs were produced by the copolymerization of stearyl methacrylate (SMA) and methyl methacrylate used as the oil phase in emulsion gels. The composite film obtained from the colloidal dispersion of P(SMA-co-MMA) exhibited a solid–solid (crystalline–amorphous) phase transition involving high latent heat of upto ∼98 J/g for the melting and crystallization of SMA segments at ∼35 and ∼25 °C, respectively. This approach provides significant advancement in designing an efficient energy-storage material using plant-derived biocompatible nanomaterials.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Efficient Phase-Change Polymer Composite Film from Emulsion Gels Stabilized by Cellulose Nanofiber-Based Amphiphiles

Chakrabarty

Teramoto

2021

ACS Appl. Polym. Mater.

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Cellulose nanofiber‐incorporated high‐solid siloxane acrylic latex by mini‐emulsion polymerization for hydrophobic coating and wood adhesive

Neelambaram,

Thounchiyath,

Narayan

et al. 2023

Polymers for Advanced Techs

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In order to contribute to the thriving research on bio nanocomposites for sustainable future, here we developed a cellulose nanofiber (CNF)‐based siloxane acrylic nanocomposite aiming to the application as hydrophobic coating and wood adhesive. CNF was incorporated in a copolymer matrix of poly (methyl methacrylate‐co‐butyl acrylate) [P(MMA‐co‐BA)] cross‐linked with methacrylate‐terminated siloxane (MTS). The copolymer was prepared by mini‐emulsion polymerization at a high solid content of about 57 wt%, where CNF was incorporated to the latex both by in‐situ polymerization and ex‐situ mixing process. The impact of the process of CNF incorporation and its content in the copolymer matrix were evaluated by measuring the thermal, mechanical, water repelling and adhesion properties. All the nanocomposites showed improved mechanical properties (tensile strength: upto 3.9 MPa) and wood adhesion strength (upto 1178 N) compared to the pristine copolymer. In addition, they showed significantly high water‐repelling properties on spray‐coated cotton (water contact angle: 110°–124°). Such siloxane acrylic/CNF nanocomposite has the potential as a sustainable material in the application area of hydrophobic coatings and adhesives.

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Low gelatin concentration assisted cellulose nanocrystals stabilized high internal phase emulsion: The key role of interaction

Wang,

Huang,

et al. 2024

Carbohydrate Polymers

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Cellulose nanofiber-derived efficient stabilizer for oil-in-water high-internal-phase emulsion

Cited by 15 publications

References 46 publications

Efficient Phase-Change Polymer Composite Film from Emulsion Gels Stabilized by Cellulose Nanofiber-Based Amphiphiles

Efficient Phase-Change Polymer Composite Film from Emulsion Gels Stabilized by Cellulose Nanofiber-Based Amphiphiles

Cellulose nanofiber‐incorporated high‐solid siloxane acrylic latex by mini‐emulsion polymerization for hydrophobic coating and wood adhesive

Low gelatin concentration assisted cellulose nanocrystals stabilized high internal phase emulsion: The key role of interaction

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