Synthesis of Different Soft Segmented Polyurethane Membranes: Structural Characterization and Antimicrobial Activity Studies

By : P. Ajit Walter, Bsr Reddy, D. Gnanasekaran

Page No: 305-316

Abstract
Several different types of soft segmented polypropylene glycol (PPG), polyethylene glycol (PEG) and bis(hydroxyalkyl) terminated poly(dimethylsiloxane) (PDMS) were used in the membrane making via a two-step polymerization reaction. The chemical structures of the polymeric membranes were characterized using attenuated total reflectance FT-IR spectroscopy. Morphology and surface properties of the membranes were studied using SEM and AFM techniques. The antimicrobial properties of these polymeric membranes were studied ongram-positive (Staphylococcus aureus (ATCC 6538)) on gram-negative bacteria (Escherichia coli (ATCC 8739) by the disk-diffusion method. Hydrophobicity of polymeric membrane surfaces was determined by contact angle measurement to study the structure-property relationship.

Authors :
P. Ajit Walter and Bsr Reddy : Industrial Chemistry Laboratory ,CSIR-Central Leather Research Institute, Adyar, Chennai-600 020, India
D. Gnanasekaran : Dielectric Material Division, Central Power Research Institute, Sir C.V Raman Road, Bangalore-560 080, India