超支化聚酯改性超细氧化锌  

Modification of Ultrafine ZnO Particles by Hyperbranched Polyester

作　　者：朱振东[1] 罗凯[1] 苏琳[1] 王跃川[1] 

机构地区：[1]四川大学高分子科学与工程学院高分子材料与工程国家重点实验室,四川成都610065

出　　处：《塑料工业》2005年第2期51-53,64,共4页China Plastics Industry

摘　　要：采用富含COOH基团的超支化聚酯 (HBP)对超细氧化锌 (μ ZnO)进行表面改性 ,并对改性后的氧化锌的结构和特征进行了表征。结果表明 :在氨水中得到了稳定期较长、清澈透明的 μ ZnO悬浮液 ,在 n(COOH ) /n (μ ZnO)为 1/8时稳定期最长 ,超过 72h ;采用相同的方法 ,但溶剂为丙酮或乙酸丁酯时 ,稳定期只有 0 .5～ 1h ;改性后的 μ ZnO在 15. 75cm-1处出现新的振动吸收 ,表面包覆了聚合物 ,团聚现象不明显 ,分散状态得到明显的改善。Nano-meter and micro scale zinc oxide particles were modified by hyperbranched polyesters (HBP) containing COOH groups, and the structure and characterisrics of the surface modified ZnO particles were characterizedThe results showed stable transparent suspension solutions of ZnO in ammonia aqueous were prepared by the addition of HBP When COOH/ZnO=1/8, the time of maintaining suspension solutions transparent was over 72 h On the contrast, the time was only 05～1 h when changing to acetone or butane acetate as the solventsIn the IR spectra, new vibration absorption appeared at 1575 cm -1XPS,elemental analyses and TEM data indicated that the HBP was bonded onto the surface of ZnO powders, and the aggregating of ZnO powders was depressed

关 键 词：超支化聚酯 超细氧化锌 表面改性 氨水 稳定期 

分 类 号：TQ314.261[化学工程—高聚物工业]