Study of Synthesis and physical properties of Poly-Lysine Dendrimer

• Main Authors: Kok-Seen Lew, 劉國勝
• Other Authors: Dar-Jong Lin
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/85636363958684822598

碩士 === 淡江大學 === 化學工程與材料工程學系 === 92 === Dendrimer is a novel type of polymer that may impart nano-scale characteristics. It contains functional moieties at its outer layer structure and has both bulk and interfacial properties. Since lysine is nearly immiscible in organic solvent except water, the polymerization of lysine was not easily accessible. Therefore, we employed binary solvent mixture (DMSO and water) to study the thermodynamic and kinetic features of the polymerization of lysine. The reaction in batch process was investigated. The chemical structure was analysed by using FTIR and NMR. The result of FTIR showed the formation of amide bounding, which can proved that the polymerization was achieved. Physical properties and morphology of dendrimers were characterized by TEM and DSC. TEM found that the particle size was about 2.5~3nm. Molecular weight of dendrimers characterized by ESI-Mass is about 8000.