Green nanocomposite films based on cellulose acetate and biopolymer-modified nanoclays: studies on morphology and properties

Ferfera-Harrar, Hafida; Dairi, Nassima

doi:10.1007/s13726-014-0286-z

Cited by 38 publications

(21 citation statements)

References 47 publications

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“…Similarly, Pola et al [27] reported that CA-based films incorporating oregano EO (20, 40 and 60 wt. %) and C30B (2.5 wt.%) presented more significant antifungal activity when applied in vapour phase.…”

Section: Accepted Manuscriptmentioning

confidence: 86%

“…Although there are some reports based on CA/clay nanocomposite films [26][27][28][29][30][31], studies on their actives nanocomposites provided with antioxidant and/or antimicrobials properties are still limited.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…highlights the intercalation of the Ge modifier into the clay. According to our previous studies [26,27]…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…21 et al [28,29] and Park et al [50] when CA was mixed with C30B using solution casting and melt processes, respectively. The driving forces for the formation of the intercalated structure could be due to polar interactions, mainly hydrogen bonding, between the polar groups (carbonyl, hydroxyl) of the confined CA/TEC chains and those of organophilic MMt [26,27,31]. The coexistence of exfoliated layers is however, not excluded.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Overall, both clay and Th additives caused an obvious decrease in the relative intensity of the first hump, indicating an alteration in the intermolecular distance between the CA and TEC. This result may be due to the occurrence of interactions, mostly hydrogen bonds, between the polar groups of pC and those of AgM as well as the hydroxyl groups of Th, which is expected to display the characteristic EOs plasticizing effect [26,27,32,55,56].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Dairi

Ferfera-Harrar

Ramos

et al. 2019

International Journal of Biological Macromolecules

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146

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Nano-biocomposite films based on plasticized cellulose acetate/triethyl citrate (CA/TEC) were prepared with silver nanoparticles (AgNPs)/gelatin-modified montmorillonite nanofiller (AgM) and thymol (Th). AgNPs were biosynthesized in situ the clay using Curcuma longa (C. longa) tuber extract. Full characterization of clay and the formulated films was conducted including morphological, physical and functional properties. From the results, the AgNPs showed spherical shape, face centred cubic crystalline structure, and small average size with narrow distribution.Intercalated structure of films was achieved with some exfoliated platelets and clay aggregates. The glass transition temperature (Tg) of CA increased slightly by the added clay but decreased by Th due to its plasticizing effect. Also, the thermal stability of CA was enhanced only by the added clay.Increasing contents of both additives into films declined the optical clarity but enhanced greatly the UV barrier ability. The clay improved the tensile and oxygen barrier properties, while the Th initiated an antagonist effect. Besides, the radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) tests highlighted antioxidant activities of Th-included films. The films showed antimicrobial activities against bacteria and fungi, where Escherichia Coli (E. Coli) was the most sensitive, with an efficient growth inhibition in vapour-phase method. These materials with antimicrobial/antioxidant properties are promising active packaging. ACCEPTED MANUSCRIPTSilver nanoparticles (AgNPs) are arch inorganic products from the nanotechnology field that have gained boundless interests in packaging applications thanks to their unique properties, such as large surface areas, high thermal stability, and antimicrobial activity. In this context, the incorporation of AgNPs into films packaging as an efficient antimicrobial agent to prevent microbial proliferation on food contact surfaces has emerged [9]. However, there is a need to develop a variety of high-yield and low cost green routes for the synthesis of silver nanoparticles.In this way, the biogenic synthesis of AgNPs mediated by plants has gained widespread interest as safer alternative to common methods, namely chemical, microbial, and physical (UV irradiation, microwave processing, thermal decomposition, electrolysis, ect) processes. This eco-friendly process is beneficial due to its cost effectiveness, non-pathogenic and easily scaled up for large-scale synthesis. Also, there is no need to use high temperature, pressure, energy and toxic chemicals for production. In this context, numerous reports have been published [10-12] concerning the biosynthesis of AgNPs using extracts of different plant parts such as root, stem, bark, leaf, fruit, flowers, and latex as natural resources. Phytocompounds in the plant extracts serve generally as reducing and capping agents in the reaction with silver nitrate (AgNO 3 ), a commonly used precursor in silver nanoparticles synthesis. This dual action is originated from the combined effects of biomolec...

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Section: Accepted Manuscriptmentioning

confidence: 86%

Section: Accepted Manuscriptmentioning

confidence: 99%

“…highlights the intercalation of the Ge modifier into the clay. According to our previous studies [26,27]…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

See 3 more Smart Citations

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Dairi

Ferfera-Harrar

Ramos

et al. 2019

International Journal of Biological Macromolecules

Self Cite

146

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Antibacterial cellulose acetate films incorporated with N‐halamine‐modified nano‐crystalline cellulose particles

Liu

Lei

Pan

et al. 2016

Polymers for Advanced Techs

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Cellulose acetate (CA) membranes have been widely used as food packaging materials as well as reverse osmosis systems. This study presents the manufacturing of composite CA film with antibacterial properties which is essential for CA film applications in the industry. N‐Halamine precursor of polymethacrylamide‐modified nano‐crystalline cellulose particles (NCC‐PMAMs) were prepared and incorporated into CA film. The composite films with intercalated structure were formed via a solvent‐casting technique. After chlorination, the composite film CA/NCC‐PMAM‐Cl‐1.0 with 1.82 × 1016 atoms/cm2 covalently bonded chlorine showed excellent antibacterial properties by inactivating 6.04 logs of Staphylococcus aureus and 6.27 logs of Escherichia coli within 10 and 5 min, respectively. According to X‐ray diffraction spectra, NCC‐PMAMs behaved as a facilitator for film crystallization. The mechanical strength of the composite film also increased compared with that of pure CA film. However, the composite film became brittle and the maximum decomposition temperature decreased slightly. Preliminary data of in vitro cytocompatibility evaluation indicate that the film is not toxic and has potential use in food packaging. Copyright © 2016 John Wiley & Sons, Ltd.

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Nanoclay Reinforced on Biodegradable Polymer Composites: Potential as a Soil Stabilizer

Syakir

Nurin

Zafirah

et al. 2016

Engineering Materials

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Green nanocomposite films based on cellulose acetate and biopolymer-modified nanoclays: studies on morphology and properties

Cited by 38 publications

References 47 publications

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Antibacterial cellulose acetate films incorporated with N‐halamine‐modified nano‐crystalline cellulose particles

Nanoclay Reinforced on Biodegradable Polymer Composites: Potential as a Soil Stabilizer

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