Abstract
AbstractPoly[3,5‐(1‐carboxy‐2‐hydroxy phenylene) ethylene] was prepared by Friedel‐Crafts condensation of salicylic acid (SA) with 1,2‐dichloro ethane (DCE) in presence of anhydrous aluminium chloride. The polymers were prepared varying the catalyst proportion, also in presence of nitrobenzene and tetrachloro ethane. The polymeric samples were characterized by IR and UV spectra and the molecular weights were determined by VPO and conductometric titration in pyridine. Various empirical relations were applied to correlate the viscosity data in DMF with the appropriate concentration function. TGA analysis was carried out to compare the thermal stability of the polymeric samples.
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