On the Study of Synthesis of Hydroxy Fluorescent-Dye Polyurethane Ionomers and Their Physical Properties

• Main Authors: Chien-Yi Chen, 陳建逸
• Other Authors: D. Y. Chao
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/73948248939008568560

碩士 === 中國文化大學 === 應用化學研究所 === 90 === The reaction of 4-Cloro-1，8-naphthalic anhydride with benzylamine to form the structure of 2-benzyl-6-hydroxy-2,3-dihydro-1H-benzo[de] isoquinoline-1,3-dione has been proven by NMR、Mass spectra and IR spectra，respectively. The fluorescent of 2-benzyl-6-hydroxy-2,3-dihydro-1H-benzo[de] isoquinoline-1,3-dione，under the investigation of the fluorescent spectrophotometer （F-4500，Hitachi，Japan），is exhibited at around 437nm. This fluorescent dye reacted with toluene diisocyanate in the presence of other additives to form the structure of the fluorescent-dye polyurethane ionomer has also been proven by IR spectra. The experimental results show that the viscosity for the fluorescent-dye polyurethane ionomer in aqueous solution appears to increase with increasing the concentration of the fluorescent dye used to prepare this polyurethane ionomer，and that the surface tension ，on the other hand，for the fluorescent-dye polyurethane ionomer in aqueous solution is seen not to increase with increasing the concentration of the fluorescent dye，as a result of the saturated adsorption of hydrophobic groups at the surface of the water. It is important to note that，for the fluorescent-dye polyurethane ionomer in aqueous solution，the average particle size appears to increase slightly with an increase of the fluorescent-dye concentration. This is the result of increased free volume of the fluorescent-dye polyurethane ionomer molecule. According to the experimental results，it was found that the tensile strength for the self-cured film made by the fluorescent-dye polyurethane ionomer is seen to increase slightly as the concentration of the fluorescent dye is increased. This is because the intermolecular interaction between the fluorescent-dye polyurethane ionomer molecules themselves becomes stronger.