Abstract
Abstract The aim of this work was to study the production of comfortable cotton plain-weave fabrics with antibacterial and antifungal characteristics through a simple finishing process, which consists in applying microcapsules of phase change materials (mPCM), monochlorotriazinyl-β-cyclodextrin (MCT-β-CD) and thyme oil. The fabrics were characterized by Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), Contact Angle and Infrared Thermography. The thyme oil release was also analyzed, as well as the antibacterial and antifungal activity. The materials treated with 20 μL/mL of thyme oil have shown anomalous oil release mechanisms, according to the Korsmeyer-Peppas model, and activity against Staphylococcus aureus , Escherichia coli , Trichophyton rubrum , Pseudomonas aeruginosa and Candida albicans . Therefore, it was reached the conclusion that mPCM, conjugated with thyme oil encapsulated in MCT-β-CD, proved to be an interesting option to produce materials possessing thermoregulation properties with putative clinical relevance for the prevention of infections, particularly dermatophytosis.
Highlights
There is an increase in the number of studies about textiles with properties such as the ability to repel water and dirt, thermal comfort, resistance to the fire and inhibition of microorganisms, for example, looking for high quality products resulting from the combination of new materials with technologies [1,2]
Functionalization of cotton with microcapsules of phase change materials (mPCM), MCT-β-CD and thyme oil MCT-β-CD and mPCM were applied to cotton through a padding process in a single step
The results obtained from the CD applied in cotton (30 g/L) were 6.81e-7 ± 0.04e-8 mol CD/g of fabric (0.77 ± 0.03 mg CD/g of fabric), and from the CD applied conjugated with mPCM were 5.78e-7 ± 0.06e-8 mol CD/g of fabric (0.66 ± 0.02 mg CD/g of fabric)
Summary
There is an increase in the number of studies about textiles with properties such as the ability to repel water and dirt, thermal comfort, resistance to the fire and inhibition of microorganisms, for example, looking for high quality products resulting from the combination of new materials with technologies [1,2]. CD provides hosting cavities that can include a large variety of guest molecules for specific functionalities This finishing strategy offers the textiles new properties such as antimicrobial, anti-UV, cosmetic, and others, and is useful for stabilizing active agents [12,13]. The damaged tissue resulting from the infection becomes more vulnerable to bacterial infections and species such as Staphylococcus aureus and Pseudomonas aeruginosa can be involved as primary or secondary infectious agents [23,24] Plant extracts, essential oils and their active compounds have been isolated, identified and characterized, considering the acknowledgement of the importance of plant-based materials as potentially non-toxic and non-allergenic antimicrobial materials Several medicinal plants such as Mentha piperita, Thymus vulgaris, Origanum compactum, Salvia officinalis, Artemisia absinthium and Lavandula angustifolia have been studied [25,26,27,28,29]. The interest in the design and optimization of these multifunctional materials is obvious, as far as we know even to the best of our knowledge, this combination of products has never been properly analyzed in textile finishing
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