Paper Title:
Synthesis, Characterization and Mechanical Properties of Hydroxyl-Terminated Hyperbranched Polymer Graft Polyether-Based Aliphatic Polyurethane Elastomer
  Abstract

Hydroxyl-terminated hyperbranched polyurethane elastomer (HBPU) was synthesized by graft copolymerization of hyperbranched poly (amine-ester) polyols(HPAE) and polyether-based aliphatic polyurethane prepolymer(PPU), and the PPU was synthesized by step polymerization of isophorone diisocyanate(IPDI) with polyethylene glycol(PEG) and dibutyltin dilaurate(DBTDL) as catalyst. The FT-IR spectroscopy, TGA and XRD were used to characterize the structure, thermal properties and crystallinity of HBPU. The mechanical properties of the elastomers were conducted on a testing machine. Microphase separation of HBPU film surface was studied by atomic force microscopy (AFM). The experimental results showed that the HBPU took on excellent hydrogen bonding and mechanical properties. The tensile strength of HBPU elastomer reached to 20.6MPa, which increased by 41.2 times than that of PPU elastomer. And the elongation at break was as high as 251.3%.

  Info
Periodical
Advanced Materials Research (Volumes 152-153)
Edited by
Zhengyi Jiang, Jingtao Han and Xianghua Liu
Pages
525-529
DOI
10.4028/www.scientific.net/AMR.152-153.525
Citation
T. T. Qiang, X. C. Wang, X. B. Lu, L. F. Ren, "Synthesis, Characterization and Mechanical Properties of Hydroxyl-Terminated Hyperbranched Polymer Graft Polyether-Based Aliphatic Polyurethane Elastomer", Advanced Materials Research, Vols. 152-153, pp. 525-529, 2011
Online since
October 2010
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