Synthesis, Characterization and Applications of Poly(sulfanilic acid)-Based Triblock Copolymer

A triblock copolymer consists of sulfanilic acid, tetrahydrofuran and epsilon-caprolactone was synthesized and characterized by various analytical techniques such as Fourier transform Infrared spectroscopy, UV-vis spectroscopy, fluorescence spectroscopy, thermogravimetric analysis, differential scanning calorimetry, field emission scanning electron microscopy, gel permeation chromatography and conductivity measurements. The percent relative humidity (RH) of poly(sulfanilic acid) (PSA; P1), poly(sulfanilic acid)-g-poly(tetrahydrofuran) (PSA-g-PTHF; P2), and poly(caprolactone)-block-poly(sulfanlic acid)-g-poly(tetrahydrofuran)-block-poly(epsilon-caprolactone) (PCL-b-PSA-g-PTHF-b-PCL; P3) were tested at different temperatures. This study infers that the cationically charged polymers exhibited excellent percent RH.