Silver Nanowires and Silanes in Hybrid Functionalization of Aramid Fabrics.

Alicja Nejman, Anna Baranowska-Korczyc, Katarzyna Ranoszek-Soliwoda, Izabela Jasińska, Grzegorz Celichowski, Małgorzata Cieślak

Molecules (Basel, Switzerland) 2022 Mar 17

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New functionalization methods of meta- and para-aramid fabrics with silver nanowires (AgNWs) and two silanes (3-aminopropyltriethoxysilane (APTES)) and diethoxydimethylsilane (DEDMS) were developed: a one-step method (mixture) with AgNWs dispersed in the silane mixture and a two-step method (layer-by-layer) in which the silanes mixture was applied to the previously deposited AgNWs layer. The fabrics were pre-treated in a low-pressure air radio frequency (RF) plasma and subsequently coated with polydopamine. The modified fabrics acquired hydrophobic properties (contact angle ΘW of 112-125°). The surface free energy for both modified fabrics was approximately 29 mJ/m2, while for reference, meta- and para-aramid fabrics have a free energy of 53 mJ/m2 and 40 mJ/m2, respectively. The electrical surface resistance (Rs) was on the order of 102 Ω and 104 Ω for the two-step and one-step method, respectively. The electrical volume resistance (Rv) for both modified fabrics was on the order of 102 Ω. After UV irradiation, the Rs did not change for the two-step method, and for the one-step method, it increased to the order of 1010 Ω. The specific strength values were higher by 71% and 63% for the meta-aramid fabric and by 102% and 110% for the para-aramid fabric for the two-step and one-step method, respectively, compared to the unmodified fabrics after UV radiation.

Citation

Alicja Nejman, Anna Baranowska-Korczyc, Katarzyna Ranoszek-Soliwoda, Izabela Jasińska, Grzegorz Celichowski, Małgorzata Cieślak. Silver Nanowires and Silanes in Hybrid Functionalization of Aramid Fabrics. Molecules (Basel, Switzerland). 2022 Mar 17;27(6)