Effect of sodium lauroyl sarcosinate on the thermal, optical and moisture absorption properties of polyvinylpyrrolidone film

Ian Pellinca Braga Caetano; Danielle Marques de Araújo Stapelfeldt; Rodrigo de Siqueira Melo; Kênia da Silva Freitas; Ana Lucia Shiguihara; Jorge Amim Júnior

doi:10.18540/jcecvl9iss5pp15997-01e

Authors

Ian Pellinca Braga Caetano Federal University of Rio de Janeiro-Campus Macaé, Brazil https://orcid.org/0009-0008-8232-7758
Danielle Marques de Araújo Stapelfeldt Federal University of Rio de Janeiro-Campus Macaé, Brazil https://orcid.org/0000-0002-8951-2496
Rodrigo de Siqueira Melo Federal University of Rio de Janeiro-Campus Macaé, Brazil https://orcid.org/0000-0002-0816-462X
Kênia da Silva Freitas Federal University of Rio de Janeiro-Campus Macaé, Brazil https://orcid.org/0009-0002-2904-2397
Ana Lucia Shiguihara Federal University of Rio de Janeiro-Campus Macaé, Brazil https://orcid.org/0009-0008-8910-619X
Jorge Amim Júnior Federal University of Rio de Janeiro-Campus Macaé, Brazil https://orcid.org/0000-0002-4323-6246

DOI:

https://doi.org/10.18540/jcecvl9iss5pp15997-01e

Keywords:

PVP, SLS, plasticizer

Abstract

In the present study, polyvinylpyrrolidone films containing amino acid-based surfactant, namely, sodium lauroyl sarcosinate (SLS), were prepared by casting method. The obtained films (PVP/SLS) were characterized by means of attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), optical properties, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and moisture absorption (MA). ATR-FTIR spectra of PVP/SLS films showed the main bands of PVP. The opacity of PVP films increased with the addition of SLS. Furthermore, moisture absorption of PVP/SLS films were higher than the pristine PVP film. TGA curves displayed that the thermal stability of PVP film decreased after the incorporation of SLS. DSC curves indicated that SLS can be used as plasticizer for PVP.