3 years ago

Assessment of random aromatic co-polyamides containing two different bulky pendant groups

Assessment of random aromatic co-polyamides containing two different bulky pendant groups
José Manuel Pérez-Francisco, Wilbert Herrera-Kao, José Luis Santiago-García, María Ortencia González-Díaz, Manuel Aguilar-Vega
This work reports the synthesis and assessment of random aromatic co-polyamides containing two different bulky pendant groups. The random aromatic co-polyamides are synthesized combining the monomers 5-tert-butylisophthalic acid and 5-(9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboximido)isophthalic acid with three different diamines. The random aromatic co-polyamides are readily soluble and possess inherent viscosities in the range of 0.47–0.60 dL g−1. Co-polyamide dense membranes are amorphous, and flexible with both good tensile strength (56.2–57.5 MPa) and tensile modulus (1.3–1.6 GPa). Permeability coefficients of the co-polyamide dense membranes are assessed for the gases He, O2, N2, CH4, and CO2. It is found that the combination of two bulky pendant groups, dibenzobarrelene and tert-butyl, in the backbone of the co-polyamides improves the gas permeability coefficient in comparison with their corresponding homopolyamides. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 135, 45884.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45884

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