Polycarbonate/1-(2-hydroxyethyl)-2,3-dimethylimidazolium chloride composite membranes and short-range chain mobility analysis
Abstract: In this investigation, the incorporation of imidazolium salt, 1-(2-hydroxehtyl)-2,3-dimethylimidazolium chloride [hydemmim][Cl] within bisphenol A polycarbonate (PC) matrix and the subsequent formation of membranes via casting were studied. Characterizations that aimed to establish structure-property correlations by Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, dynamic mechanical thermal analysis, and water vapor transport (WVT) were performed. The results indicated that the presence of ionic liquid (IL) within the PC matrix significantly alter the local and macromolecular structure. The thermal stability is increased for all levels of incorporation. The plasticizing and antiplasticizing effects were observed due to the influence of the proportions of IL incorporated and of the cation’s substituent chain of this IL. Distinct mechanisms of WVT were also observed in the presence of IL.
Author(s): Oliveira, LMD (da Rocha Oliveira, Lucas Mendonca); Vedovello, P (Vedovello, Priscila); Paranhos, CM (Paranhos, Caio Marcio)
JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 134 | Ed: 30 | Number of article: 45117 | Published: AUG 10 2017
DOI: 10.1002/app.45117
