On rhe study of the Effect of Hydrophilic group and Content on the Siloxane-based Polyurethane and Their Physical Properties

• Main Authors: Sun Bea Chun, 宋璧瓊
• Other Authors: Yang Ming Kuo Associate Professor
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/65167424569680863877

碩士 === 中國文化大學 === 應用化學研究所 === 92 === Abstract The reaction of toluene diisocyanate with siloxane-based (KBE903) and other ingredients to form the structure of the siloxane-based polyurethane ionomer has been proven by FT-IR spectra. Experimental results show that the viscosity for siloxane-based polyurethane ionomer in aqueous solution appears to increase with increasing the concentration of the siloxane-based (KBE903). As for the surface tension of the siloxane-based polyurethane ionomer in water,it was found not to change with increasing the concentration on the siloxane-based(KBE903) As a result of the saturation of hydrophobic groups adsorbed at the surface of water. In addition, the number average particle size for this polyurethane ionomer molecule is seen to increase with increasing polyurethane ionomer concentration. This is the result of increased free volume of the polyurethane ionomer molecule. The experimental data indicate that the tensile strength for self-cured film of the siloxane-based polyurethane ionomer appears not to increase with increasing the concentration of the siloxane-based dye(KBE903). The reason because increased amount of siloxane-based polyurethane ionomer does not enhance the interaction between ionomer molecules themselves.