In situ synthesis of polyethylene terephthalate nanocomposites using bis (2-hydroxyethyl) phthalate monomer

In this article, we address in situ synthesis of polyethylene terephthalate (PET) nanocomposites using the bis (2-hydroxyethyl) phthalate monomer and inorganic layered materials (sulfanilic acid salt-modified magnesium aluminum-layered double hydroxides [MgAl LDH-SAS] and Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride [DTSACl] and tetraethyl orthosilicate [TEOS]- modified clay [CL120-DT]). The dispersion morphology of the synthesized nanocomposites was evaluated using XRD and TEM, from these results, it was confirmed that 0.5 wt% loaded PET/MgAl LDH-SAS and PET/CL120-DT nanocomposites have flocculated and intercalated morphologies, respectively. Thermomechanical analyses were performed by thermogravimetric analysis, dynamic mechanical analysis, and differential scanning calorimetry, respectively. Moreover, the water vapor transmission rate (WVTR) values of a pure PET, PET/CL120-DT 0.5 wt%, and PET/MgAl LDH-SAS 0.5 wt% nanocomposites were found to be 49, 45, and 46 g center dot m(-2)center dot day(-1), respectively. Furthermore, the gas barrier properties of PET composite films containing various amounts of inorganic nanoparticles were investigated using Gas permeability analysis (GPA).