Grafting of Wool with Alginate Biopolymer/Nano Ag as a Clean Antimicrobial and Antioxidant Agent: Characterization and Natural Dyeing Studies

There is a continuous search for green and sustainable materials and processes in textile dyeing and finishing. In the current study, wool yarns were grafted with Sodium Alginate-Silver nanoparticles (SA-Ag NPs) and consecutively dyed with Cochineal or Madder. The weight gain of the samples was meas...

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Bibliographic Details
Published in:Journal of polymers and the environment 2021-08, Vol.29 (8), p.2639-2649
Main Authors: Sadeghi-Kiakhani, Mousa, Safapour, Siyamak, Habibzadeh, Sara Alsadat, Tehrani-Bagha, Ali R.
Format: Article
Language:English
Subjects:
Alginic acid
Antiinfectives and antibacterials
Antimicrobial agents
Antioxidants
Biopolymers
Chemistry
Chemistry and Materials Science
Dyeing
Dyes
Environmental Chemistry
Environmental Engineering/Biotechnology
Fibers
Industrial Chemistry/Chemical Engineering
Materials Science
Morphology
Nanoparticles
Original Paper
Polymer Sciences
Pretreatment
Scanning electron microscopy
Silver
Sodium alginate
Sustainable materials
Weight gain measurement
Wool
Yarns
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Summary:There is a continuous search for green and sustainable materials and processes in textile dyeing and finishing. In the current study, wool yarns were grafted with Sodium Alginate-Silver nanoparticles (SA-Ag NPs) and consecutively dyed with Cochineal or Madder. The weight gain of the samples was measured to find the optimized SA-Ag NPs initial concentration, and Scanning Electron Microscopy (SEM) was used to study their surface morphology. The effects of the initial dye concentration, pH, temperature on the color strength of the dyed samples were investigated. It was found that the pretreatment enhanced the dye-ability, antimicrobial, and antioxidant characteristics of the samples noticeably. Under the same dyeing conditions, the fixation of dyes on the treated wool fibers was noticeably higher than that of the untreated wool fibers. The colorfastness characteristics of the treated samples dyed with Cochineal or Madder were slightly improved. The results clearly showed that the application of SA-Ag NPs on the wool samples could be considered as a green finishing process with promising antioxidant and antimicrobial activities. A very high level of antimicrobial efficiency (99%) was achieved after the pretreatment, which remained as high as 90% even after ten repeated washing cycles.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-021-02046-0