| 초록 |
A new type of polyester polyol with alkyl side groups, poly(2,4-diethyl-1,5-pentamethylene adipate) glycol (PDPAd) was synthesized and being used to improve the hydrolytic stability of waterborne polyurethanes and the results were favorably compared with poly(tetramethylene adipate) glycol (PTAd) based PU and copolymers of the two types of polyol in terms of thermal, mechanical, dynamic mechanical, and swell behavior of the dispersion cast films in addition to hydrolytic stability and adhesion properties. Also angle dependent X-ray photoelectron spectroscopy (XPS) was used to study the surface composition of two polyester polyurethane block copolymers. |
