Publication Type:

Journal Article

Source:

European Polymer Journal, Volume 41, Number 7, p.1623 - 1629 (2005)

URL:

http://www.sciencedirect.com/science/article/pii/S0014305705000741

Keywords:

spectral studies, Thermal properties, viscosity, X-ray diffraction studies, Zinc-containing poly(urethane-ether)s

Abstract:

Zinc salt of mono(hydroxypentyl)phthalate, Zn(HPP)2, was synthesized by reacting 1,5-pentanediol, phthalic anhydride and zinc acetate. Zinc-containing poly(urethane-ether)s (PUEs) were synthesized by reacting hexamethylene diisocyanate (HMDI) or toluene 2,4-diisocyanate (TDI) with a mixture of Zn(HPP)2 and poly(ethylene glycol) (PEG300 or PEG400) in dimethylsulfoxide (DMSO) at 95°C under nitrogen atmosphere using di-n-butyltin dilaurate as a catalyst. Blank PUEs without Zn(HPP)2 were also prepared by reacting PEG300 or PEG400 with HMDI or TDI under similar conditions. The structure of the polymers was confirmed by FT-IR, 1H NMR, 13C NMR, and solid-state 13C-CP-MAS NMR spectra. The zinc-containing polymers were soluble in only highly polar solvents. The inherent viscosity of the zinc-containing PUEs was found to be very low. X-ray diffraction studies revealed that HMDI-based (PUEs) were partially crystalline while TDI based (PUEs) were amorphous. The Tg values of the zinc-containing PUEs were found to be low and range from 5.3 to 7.5°C. The thermogravimetric analysis revealed the influence of zinc on the initial decomposition and the overall thermal stability of the polymers

Cite this Research Publication

Dr. Jayakumar Rangasamy and Nanjundan, S., “Synthesis of zinc-containing poly(urethane-ether)s based on zinc salt of mono(hydroxypentyl)phthalate”, European Polymer Journal, vol. 41, pp. 1623 - 1629, 2005.