Structural and thermal characterization of macro-branched functional terpolymer containing 8-hydroxyquinoline moieties with enhancing biocidal properties

Novel polyfunctional acetyl and hydroxyl bearing functional terpolymer (HQFCA) derived from 8-hydroxyquinoline (HQ), 4-chloroacetophenone (CA) and formaldehyde (F) has been synthesized by complex condensation polymerization in the presence of an acid catalyst. The structure and morphology of terpolymer were elucidated by FTIR-ATR, one-dimensional NMR (1H NMR, 13C NMR and DEPT-135 experiment), two-dimensional NMR (HSQC and TOCSY), pyrolysis GC–MS, gel permeation chromatography (GPC), nitrogen absorption, and optical microscopy (OM). Principal pyrolysis products generated from HQFCA units were 8-hydroxy-5,6-dimethylquinoline, 8-hydroxy-2-methylquinoline and 4-chloroacetophenone. This reactive terpolymer can be used as synthons for exchange membrane preparation and biomedical coating applications.

A macro-branched functional terpolymer with acetyl, chloro and hydroxyl groups was synthesized via polycondensation approach. Several techniques as GPC, FTIR, 1D and 2D-NMR, pyrolysis GC/MS, nitrogen adsorption, DSC and TG–DTG were used to elucidate its molecular weight, molecular weight distribution, chemical structure, and physical and thermal properties. The synthetic approaches described herein offer routes to novel structure and functionality of next generation smart functional materials. The antimicrobial tests demonstrate that the terpolymer has superior antimicrobial properties than earlier reported terpolymers.Figure optionsDownload as PowerPoint slideHighlights
► A novel terpolymer resin using polycondensation strategy has been developed.
► Molecular structure of terpolymer resin was confirmed by spectral analysis.
► Micro-structural and thermal study was performed.
► It shows promise for use in the control of medical devices associated infections.