Hb-SDS-Ag水凝胶聚合物超细微粒的制备及表征(Ⅰ)

本文报道Hb SDS Ag聚合物超细微粒的制备 (取一定量的Hb ,SDS于烧杯中 ,加入Ag(NH3) 2 NO3溶液及 pH～ 12的tris OH缓冲液 ,庚烷和异戊醇 ;在另一烧杯中 ,加入甲醛、庚烷和异戊醇。分别乳化 ,将二者混合 ,于 6 0± 0 5℃下恒温 1 5h ,然后水浴减压回流 1 5h ,冷却、分离、洗涤、干燥得样品 )及性质表征。用X 射线衍射 (XRD) ,TEM ,EDS ,IR光谱考察这种聚合物超细微粒的表面结构 ,微粒粒径 12 0nm。研究表明 :Ag+ 离子先与Hb产生化学键合 ,再还原为Ag粒 ,进而聚合成网状结构的聚合物。

Preparation and Characterization of Polymeric Ultrafine Particles on Hb-SDS-Ag Hydrogeles (Ⅰ)

Preparation and characterization of polymeric particles ultrafine on Hb-SDS-Ag have been reported. (Taking fixed quantity of Hb, SDS to be putting in a beaker, then Ag(NH3)2NO3 solution, pH--12 buffer, n-heptane and iso-amyl-alcohol were added. And fixed quantity formaldehyde, n-heptane and iso-amyl-alcohol were added in another beaker. They were stirred emulsification respectively, both of mixture were mixed in a three-well flask and which were reacted for 1.5 h at 60 +/- 0.5 degrees C. After cooling, the precipitation was separated and washed once and again, it was dried) The structure of surface have been investigated by XRD, TEM and FT-IR for this polymeric ultrafine particles, and size of diameter is about 120 nm. It is shown that Ag+ ion first formed chemical binding with Hb, then reduced to Ag particles and finally collected to a network polymers of coated by Hb.