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Preparation of Silylated Waterborne Polyurethane/Silica Nanocomposites Using Colloidal Silica  

Hong, Min Gi (Department of Chemical and Biochemical Engineering, Konyang University)
Shin, Yong Tak (Department of Chemical and Biochemical Engineering, Konyang University)
Choi, Jin Joo (Department of Chemical and Biochemical Engineering, Konyang University)
Lee, Won Ki (Technical Research Institute, Hanjin Chemical Co., LTD)
Lee, Gyoung Bae (Technical Research Institute, Hanjin Chemical Co., LTD)
Yoo, Byung Won (Technical Research Institute, Hanjin Chemical Co., LTD)
Lee, Myung Goo (Nanosphere Co., LTD)
Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
Publication Information
Korean Chemical Engineering Research / v.48, no.5, 2010 , pp. 561-567 More about this Journal
Abstract
Silylated waterborne polyurethane was synthesized by capping the NCO groups of polyurethane prepolymer, prepared from isophrone diisocyanate, poly(tetramethylene glycol) and dimethylol propionic acid, with aminopropyl triethoxysilane. Subsequently, it was mixed with colloidal silica to prepare silylated waterborne polyurethane/silica nanocomposites. The average sizes of nanocomposite particles, measured by dynamic light scattering, showed almost the same value, irrespective of increasing silica content. However, the prepared nanocomposites showed better thermal stability than pure waterborne polyurethane.
Keywords
Silylated Waterborne Polyurethane; Aminopropyl Triethoxysilane; Colloidal Silica; Nanocomposite;
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