Enhanced Antibacterial Efficiency of Cellulosic Fibers: Microencapsulation and Green Grafting Strategies

Dridi, Dorrà; Bouaziz, Aicha; Gargoubi, Sondes; Zouari, Abir; B’chir, Fatma; Bartegi, Aghleb; Majdoub, Hatem; Boudokhane, Chedly

doi:10.3390/coatings11080980

Cited by 13 publications

(11 citation statements)

References 23 publications

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“…Furthermore, as the water–oil emulsion is formed quickly around the stirrer, the smallest microcapsules are formed near the stirrer and the larger ones further away. 27 PMMA MCs have an average diameter of 20 μm, within a range of 2–80 μm ( Figure 5 ). The microcapsule wall thickness varies between 7 and 32 μm ( Figure 4 d–f).…”

Section: Resultsmentioning

confidence: 99%

PMMA Microcapsules for the Inactivation of SARS-CoV-2

et al. 2022

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Surface disinfection currently plays a decisive role in the epidemiological situation caused by the SARS-CoV-2 coronavirus. However, most disinfection products available on the market have a high evaporation rate and only an immediate action and not continuous, creating the need for a high frequency of disinfection. To overcome this limitation, in the present work, poly(methyl methacrylate) (PMMA) microcapsules were developed with an active agent (hydrogen peroxide) encapsulated, which has the ability to inactivate/neutralize the SARS-CoV-2 virus. PMMA-H 2 O 2 microcapsules have a spherical shape and a smooth structure with low porosity and were successfully attached to nonwoven fabrics, as observed from scanning electron microscopy. The thermogravimetric analysis shows that PMMA-H 2 O 2 microcapsules have high thermal stability and can increase the stability of H 2 O 2 . Nonfabric substrates functionalized with PMMA-H 2 O 2 microcapsules were tested by a highly sensitive and specific reverse transcription-quantitative real-time polymerase chain reaction (RT-qPCR)-based method to evaluate antiviral activity through the degradation of SARS-CoV-2 deoxyribonucleic acids. The highest percentage of viral nucleic acid elimination was obtained when exposing the viral sample for 1 h to PMMA-H 2 O 2 microcapsules, resulting in an elimination of >97% of the coronavirus. In addition, the microcapsules are stable over a period of three weeks and retain the ability to eliminate SARS-CoV-2. Hence, it is demonstrated that this microcapsule system is efficient for SARS-CoV-2 elimination and inherent surface disinfection.

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Section: Resultsmentioning

confidence: 99%

PMMA Microcapsules for the Inactivation of SARS-CoV-2

et al. 2022

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“…The results obtained through various analyses revealed successful grafting of microcapsules onto cotton fabric surfaces, displaying outstanding antibacterial effects without affecting their other properties. Moreover, enhanced mechanical properties and wettability were also observed in cotton fabrics [ 170 ].…”

Section: Essential Oils In Chitosan-derived Food Packaging Materialsmentioning

confidence: 99%

Current Trends in the Utilization of Essential Oils for Polysaccharide- and Protein-Derived Food Packaging Materials

et al. 2022

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Essential oils (EOs) have received attention in the food industry for developing biopolymer-derived food packaging materials. EOs are an excellent choice to replace petroleum-derived additives in food packaging materials due to their abundance in nature, eco-friendliness, and superior antimicrobial and antioxidant attributes. Thus far, EOs have been used in cellulose-, starch-, chitosan-, and protein-based food packaging materials. Biopolymer-based materials have lower antioxidant and antibacterial properties in comparison with their counterparts, and are not suitable for food packaging applications. Various synthetic-based compounds are being used to improve the antimicrobial and antioxidant properties of biopolymers. However, natural essential oils are sustainable and non-harmful alternatives to synthetic antimicrobial and antioxidant agents for use in biopolymer-derived food packaging materials. The incorporation of EOs into the polymeric matrix affects their physicochemical properties, particularly improving their antimicrobial and antioxidant properties. EOs in the food packaging materials increase the shelf life of the packaged food, inhibit the growth of microorganisms, and provide protection against oxidation. Essential oils also influence other properties, such as tensile, barrier, and optical properties of the biopolymers. This review article gives a detailed overview of the use of EOs in biopolymer-derived food packaging materials. The innovative ways of incorporating of EOs into food packaging materials are also highlighted, and future perspectives are discussed.

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“…Essential oils such as basil, cinnamon, clove, citronella limonene, lavender and vanillin predominate among core materials, along with other natural ingredients such as rice oil and wintergreen oil (methyl salicylate), propolis and capric acid as a saturated fatty acid. Essential oils are natural, volatile and aromatic liquids, extracted mainly from plants, and are easily degradable in the environment under suitable conditions, namely light, heat and atmospheric oxygen [192].…”

Section: Biodegradable Microcapsules For Functional Textilesmentioning

confidence: 99%

Microencapsulation for Functional Textile Coatings with Emphasis on Biodegradability—A Systematic Review

2021

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The review provides an overview of research findings on microencapsulation for functional textile coatings. Methods for the preparation of microcapsules in textiles include in situ and interfacial polymerization, simple and complex coacervation, molecular inclusion and solvent evaporation from emulsions. Binders play a crucial role in coating formulations. Acrylic and polyurethane binders are commonly used in textile finishing, while organic acids and catalysts can be used for chemical grafting as crosslinkers between microcapsules and cotton fibres. Most of the conventional coating processes can be used for microcapsule-containing coatings, provided that the properties of the microcapsules are appropriate. There are standardised test methods available to evaluate the characteristics and washfastness of coated textiles. Among the functional textiles, the field of environmentally friendly biodegradable textiles with microcapsules is still at an early stage of development. So far, some physicochemical and physical microencapsulation methods using natural polymers or biodegradable synthetic polymers have been applied to produce environmentally friendly antimicrobial, anti-inflammatory or fragranced textiles. Standardised test methods for evaluating the biodegradability of textile materials are available. The stability of biodegradable microcapsules and the durability of coatings during the use and care of textiles still present several challenges that offer many opportunities for further research.

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Enhanced Antibacterial Efficiency of Cellulosic Fibers: Microencapsulation and Green Grafting Strategies

Cited by 13 publications

References 23 publications

PMMA Microcapsules for the Inactivation of SARS-CoV-2

PMMA Microcapsules for the Inactivation of SARS-CoV-2

Current Trends in the Utilization of Essential Oils for Polysaccharide- and Protein-Derived Food Packaging Materials

Microencapsulation for Functional Textile Coatings with Emphasis on Biodegradability—A Systematic Review

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