Synthesis and properties of hyper-dispersants     

张宝华  杨青  潜飞  叶俊丹  毛志平  徐红 《上海大学学报(英文版)》2009,13(4):283-286

The synthesis and properties of three kinds of hyper-dispersants are studied in this paper, which are non-terminated, carboxyl-terminated and polyethylene imine grafted poly(hydroxyl carboxylic acid) ester. The hyper-dispersants are synthesized by the materials of 12-hydroxy-stearic acid, stearic acid and polyethylene imine, which are used to improve the dispersion properties of nano titanium dioxide (nano-TiO₂) in low-concentration resin solution system. The influences of hyper-dispersants on the viscosity and stability of the system are studied. It is found that polyethylene imine grafted hyper-dispersant has the best dispersion performance in nano-TiO₂ dispersion system, and the optimal content of the hyper-dispersant is 4%. Project supported by the Shanghai Leading Academic Disciplines (Grant No.T0105), and the Key Laboratory of Science & Technology of Eco-Textile (Donghua University), Ministry of Education of China  相似文献