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Effects of Physical Properties on Waterborne Polyurethane with Poly(tetramethylene glycol) (PTMG) and Polycaprolactone (PCL) Contents  

Yang, Yun-Kyu (School of Advanced Material Engineering, College of Engineering, Chungnam National University)
Kwak, Noh-Seok (School of Advanced Material Engineering, College of Engineering, Chungnam National University)
Hwang, Taek-Sung (School of Advanced Material Engineering, College of Engineering, Chungnam National University)
Publication Information
Polymer(Korea) / v.29, no.1, 2005 , pp. 81-86 More about this Journal
Abstract
In this study, waterborne polyurethanes were synthesized with poly(tetramethylene glycol) (PTMG), polycarprolactone PCL), dimethylol propionic acid (DMPA) and different molar ratio of chain extender. Particle size, polydispersity, thermal and mechanical properties of waterborne polyurethane were investigated. The particle size of waterborne polyurethane was in the range of 5∼200 nm and decreased with increasing the amounts of PCL and chain extender. Glass transition temperatures ($T_g$) were in the range of -70∼-45 ${\circ}C$ and increased with as PCL and chian extender (ED) contents increased. The $T_g$ of polyurethane prepared from the mixture showed similar trends as compared with those of in the same values of synthetic polyurethane using PTMG or PCL, respectively. Also, mechanical properties of mixed polyols (PTMG and PCL) were lower than those of PTMG and PCL, respectively.
Keywords
PTMG; PCL; mixed polyols; incompatibility; mechanical properties;
Citations & Related Records

Times Cited By Web Of Science : 3  (Related Records In Web of Science)
Times Cited By SCOPUS : 3
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