Biopolymers from Composted Biowaste as Stabilizers for the Synthesis of Spherical and Homogeneously Sized Silver Nanoparticles for Textile Applications on Natural Fibers.
The use of bio-based substances (BBS) obtained from composted biowaste as stabilizers for the production of silver nanoparticles (AgNPs) in substitution to citrate is investigated herein, evaluating the functionalization of natural fibers for textile antibacterial applications. The results obtained evidenced that BBS can substitute citrate as reducing/stabilizing agent in the synthesis, inducing a geometrical control (in shape and size) of the AgNPs. Two different substrates were selected (wool and cotton) and two dip-coating deposition techniques investigated. The release of AgNPs from the supports in water was evaluated under two different experimental conditions: 1) soaking (static conditions) for 7 and 15 days, simulating the contact with sweat, and 2) centrifugation (dynamic conditions), simulating a washing machine treatment. A wide physicochemical characterization was carried out to evaluate the effects of BBS on the morphology and stability of AgNPs suspensions as well as the functionalization effectiveness.
University of Torino, Department of Chemistry, Via P. Giuria 7, 10125, Torino, Italy. roberto.nistico@unito.it.
Roberto
R
Nisticò
University of Torino, Department of Chemistry, Via P. Giuria 7, 10125, Torino, Italy.
Marco
M
Barrasso
Escola Politécnica, Universidade de São Paulo, Departamento de Engenharia Química, Av. Prof. Luciano Gualberto, trav. 3, 380, São Paulo SP, Brazil.
Galo Antonio
GA
Carrillo Le Roux
Escola Politécnica, Universidade de São Paulo, Departamento de Engenharia Química, Av. Prof. Luciano Gualberto, trav. 3, 380, São Paulo SP, Brazil.
Marcelo Martins
MM
Seckler
Escola Politécnica, Universidade de São Paulo, Departamento de Engenharia Química, Av. Prof. Luciano Gualberto, trav. 3, 380, São Paulo SP, Brazil.
Walter
W
Sousa
University of Torino, Department of Chemistry, Via P. Giuria 7, 10125, Torino, Italy.
Mery
M
Malandrino
University of Torino, Department of Chemistry, Via P. Giuria 7, 10125, Torino, Italy.|University of Torino, NIS Centre and INSTM Reference Centre, Via P. Giuria 7, 10125, Torino, Italy.
Giuliana
G
Magnacca
biopolymers; cotton; nanoparticles; silver; wool