Properties of regenerated cellulose films with silver nanoparticles and plasticizers<sup/>

Kataoka, Lays Furtado de Medeiros Souza; Falla, Maria del Pilar Hidalgo; Luz, Sandra Maria da

doi:10.1590/0104-1428.20240025

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ORIGINAL ARTICLES • Polímeros 34 (3) • 2024 • https://doi.org/10.1590/0104-1428.20240025 copy

Properties of regenerated cellulose films with silver nanoparticles and plasticizers^a a This paper has been partially presented at the 17th Brazilian Polymer Congress, held in Joinville, SC, 29/Oct - 02/Nov/2023.

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Nanocomposite films from cellulose jute fibers can be promising for application in electronic devices, mainly when silver nanoparticles (AgNPs) are added, which increases their conductivity. This work studied the transmittance, conductivity, and thermal stability of regenerated cellulose films (RCF) by adding AgNPs and plasticizers. Carboxymethylcellulose (CMC), sorbitol, and glycerol plasticizers were incorporated at 15 wt.% and 0.5 wt.% of AgNPs. The resulting materials were studied using Ultraviolet-visible and Fourier Transform Infrared Spectroscopy, electrical analysis using the Van der Pauw method, and thermogravimetry. As a result, an average size of 9 nm for AgNPs was verified. Incorporating AgNP in the films decreased the transmittance by a minimum of 34% compared to pure RCF and reduced thermal stability by at least 10 ºC. Nanocomposites containing plasticizers showed an improved conductivity after incorporating these components, from 10^-2 to 10^-1 (S/cm).

Keywords:
regenerated cellulose films; silver nanoparticles; transmittance; conductivity; thermal stability

Sample	Plasticizer (wt.%)	AgNP (wt.%)
RCF	-	-
RCF - AgNP	-	0.5%
RCF - CMC	15% CMC	-
RCF - CMC - AgNP	15% CMC	0.5%
RCF - Sorbitol	15% Sorbitol	-
RCF - Sorbitol - AgNP	15% Sorbitol	0.5%
RCF - Glycerol	15% Glycerol	-
RCF - Glycerol - AgNP	15% Glycerol	0.5%

Sample		Conductivity (S/cm)	Conductivity Average (S/cm)^* * 1 Three films of each nanocomposite studied were analyzed. For each film, electrical measurements were carried out in quadruplicate. 1
RCF - AgNP	1	0.1014	0.06836 ±0.0230
	2	0.0536
	3	0.0501
RCF - CMC - AgNP	1	0.2898	0.2682 ± 0.0504
	2	0.1934
	3	0.3087
RCF - Sorbitol - AgNP	1	0.2060	0.1774 ± 0.0359
	2	0.1267	0.1774 ± 0.0359
	3	0.1994
RCF - Glycerol - AgNP	1	0.2069	0.2260 ± 0.0506
	2	0.2953
	3	0.1758
*RCF ^2**	[⁹9 Kataoka, L. F. M. S., Leão, R. M., Gontijo, A. B., Falla, M. D. P. H., & Luz, S. M. (2022). Regenerated cellulose films from jute fibers applied in conductive nanocomposites. Materials Today. Communications, 33, 104645. http://doi.org/10.1016/j.mtcomm.2022.104645. http://doi.org/10.1016/j.mtcomm.2022.104... ]	3.28 x 10^-2
RCF – 0.290% AgNP^* * 1 Three films of each nanocomposite studied were analyzed. For each film, electrical measurements were carried out in quadruplicate. 2	[⁹9 Kataoka, L. F. M. S., Leão, R. M., Gontijo, A. B., Falla, M. D. P. H., & Luz, S. M. (2022). Regenerated cellulose films from jute fibers applied in conductive nanocomposites. Materials Today. Communications, 33, 104645. http://doi.org/10.1016/j.mtcomm.2022.104645. http://doi.org/10.1016/j.mtcomm.2022.104... ]	5.32 x 10^-2

	Thermal Stability (°C)	Peak_Cellulose (°C)	Weight Losses (%)
	Thermal Stability (°C)	Peak_Cellulose (°C)	100 (°C)	200 (°C)	300 (°C)	400 (°C)	600 (°C)
RCF	230.3	334.1	12.2	13.7	31.0	74.7	80.4
RCF - AgNP	219.9	309.9	12.3	16.8	53.3	68.6	74.5
RCF - CMC	222.2	321.4	12.1	14.0	33.8	68.1	75.2
RCF - CMC - AgNP	197.2	303.4	11.3	14.7	50.0	71.0	77.6
RCF - Sorbitol	212.5	310.9	11.9	15.2	44.4	69.1	75.9
RCF - Sorbitol - AgNP	219.9	305.9	14.1	17.8	52.1	72.6	79.3
RCF - Glycerol	210.9	270.9	11.0	19.4	53.9	60.4	66.4
RCF - Glycerol - AgNP	201.0	252.9	11.6	17.6	52.4	57.7	62.3

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Properties of regenerated cellulose films with silver nanoparticles and plasticizersa a This paper has been partially presented at the 17th Brazilian Polymer Congress, held in Joinville, SC, 29/Oct - 02/Nov/2023.

Abstract

Properties of regenerated cellulose films with silver nanoparticles and plasticizers^a a This paper has been partially presented at the 17th Brazilian Polymer Congress, held in Joinville, SC, 29/Oct - 02/Nov/2023.