Synthesis and performance of a novel polyurethaneurea as pervaporation membrane for the selective removal of phenol from industrial waste water

Abstract

Hydroxyterminated polybutadiene (HTPB) was reacted with 2,4-toluene diisocyanate (TDI) followed by the addition of a diamine chain extender (prepared by the condensation reaction of 4,4′ ′diaminodiphenylsulfone and terepthalaldehyde) to prepare an imine containing polyurethaneurea (PIUU). The prepared polyurethaneurea was caste in order to obtain polymer film. The new polyurethaneurea film showed high phenol selectivity as pervaporation membrane. About 88% phenol was obtained in condensed permeate when pervaporation was performed at 50°C with 7% aqueous phenol solution as feed and permeate side pressure was maintained at 5 mm of Hg.

Functionalization of terminal carbon atoms of hydroxyl terminated polybutadiene by polyazido nitrogen rich molecules

“…The excellent shock absorbing capacity of the HTPB polyurethane drastically reduces the sensitivity and vulnerability of the explosive materials. HTPB based polyurethanes have also been studied by several authors for the separation of organic compounds (Gupta et al 2002), for selective adsorption of proteins (Yang and Lin 2001) and for selective gas transport properties (Chen et al 2000). Recently, HTPB was been successfully used for the fabrication of elastic conducting polymer micro-particles with core-shell structure (Kuo et al 2003).…”

Removing Phenols from Post-Processing Wastewater Originating from Underground Coal Gasification Using Coagulation-Flocculation and the H2O2/UV Process

“…In this case phenol is only adsorbed and does not decompose [25]. The application of membrane technique can remove 88% of phenol, which was separated as a condensed permeate [26]. Other authors also studied the removal of phenol using biological processes in the aerobic bioreactor with glass beads.…”

Functionalization of hydroxyl terminated polybutadiene with biologically active fluorescent molecule

“…The quantity of microstructure present in HTPB sample dictates the flow characteristics of the sample and the mechanical properties of the corresponding polyurethane (Manjari et al 1993;Nazare et al 1993). The HTPB based polyurethanes have also been studied in the literature by several authors for the separation of organic compounds, selective adsorption of proteins and selective gas transport properties (Chen et al 2000;Yang and Lin 2001;Gupta et al 2002). Recently, HTPB has been successfully used for the fabrication of elastic conducting polymer micro particles with core-shell structure (Kuo et al 2003).…”