Investigation of Hyperbranced Polyesters with Different Generation and their Application in Waterborne Polyurethanes

Abstract:

The 1st, 2nd and 3rd generations of hydroxyl-terminated hyperbranched polyesters (HBPE-1, HBPE-2, and HBPE-3) were synthesized. A3rd generation hyperbranched polyester (HBPE-3) was used as original crosslinking agent to prepared hyperbranched waterborne polyurethane dispersions (HPU). FTIR spectra confirmed that this reaction really took place. The experimental data indicated that, compared with the linear one, the hyperbranched HPU aqueous dispersions exhibited lower viscosity, and larger particle size. For the hyperbranched HPU films, mechanical properties were obviously enhanced.

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 91-96
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.91
• Online since: January 2012
• Authors: Dong Ya Yang, Li Han, Han Qing Zhang, Feng Xian Qiu
• Keywords: Crosslinking Structure, Hyperbranched Polyester, Intrinsic Viscosity, Waterborne Polyurethane Dispersions

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