Polyurethane Dispersions Derived from Polycarbonatediols and a Carboxylic Polycaprolactonediol

Aqueous polyurethane dispersions derived from various polycarbonatediols, a carboxylic polycaprolactonediol, PLACCEL205BA, and isophorone diisocyanate (IPDI) were prepared. The effect of dispersing procedure on the molecular weight was investigated. It was found that a modified dispersing procedure...

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Bibliographic Details
Published in:Journal of macromolecular science. Part A, Pure and applied chemistry Pure and applied chemistry, 2005-01, Vol.42 (1), p.85-93
Main Authors: Lee, Da-Kong, Tsai, Hong-Bing, Yu, Wan-Ju, Tsai, Ruey-Shi
Format: Article
Language:English
Subjects:
Applied sciences
dispersions
Exact sciences and technology
ionomers
isophorone disocyanate
molecular weight distribution
Organic polymers
Physicochemistry of polymers
polycarbontediols
Polycondensation
polyurethanes
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:Aqueous polyurethane dispersions derived from various polycarbonatediols, a carboxylic polycaprolactonediol, PLACCEL205BA, and isophorone diisocyanate (IPDI) were prepared. The effect of dispersing procedure on the molecular weight was investigated. It was found that a modified dispersing procedure gave polyurethane dispersions with higher molecular weight and better tensile strength. Comparing with polyurethane dispersions derived from dimethylolpropionic acid (DMPA), PLACCEL205BA gave polyurethane dispersions with finer particle size indicating that PLACCEL205BA imparted better dispersibility. It was also found that the chemical structure of the polycarbonatediols affected the tensile properties significantly.
ISSN:1060-1325
1520-5738
DOI:10.1081/MA-200040979