Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25264
Title: Supramolecular polyurethane networks containing pyridine moieties for shape memory materials
Authors: Chen, S
Hu, J 
Yuen, CWM
Chan, L
Issue Date: 2009
Source: Materials letters, 2009, v. 63, no. 17, p. 1462-1464
Abstract: Fabricating smart materials with supramolecular switch is an attractive research topic in recent years. In this communication, shape memory polyurethane supramolecular networks are synthesized from BINA, HDI, MDI and BDO. DSC results show that amorphous soft phase and hard phase are formed through different intermolecular hydrogen bondings at the regions of pyridine units and urethane groups in the resulted BINA containing polyurethanes (BIN-PUs). Moreover, DMA results show that the BIN-PUs have higher modulus ratio (Eg / Er > 400) and much higher maximum tanĪ“. These results determine that the BIN-PUs exhibit excellent shape memory effect: higher shape fixity (> 97%) and higher shape recovery (> 91.7%).
Keywords: Polyurethane
Pyridine
Shape memory materials
Supramolecular
Publisher: Elsevier
Journal: Materials letters 
ISSN: 0167-577X
EISSN: 1873-4979
DOI: 10.1016/j.matlet.2009.03.028
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