聚合物对硫化铅钠米微粒的稳定作用

以含铅聚合物微凝胶与Ｈ２Ｓ气体反应制得ＰｂＳ纳米微粒／聚合物复合体系，利用小角Ｘ光散射方法对复合在聚合物中的ＰｂＳ纳米微粒的粒度及分布进行了表征，研究了不同反应条件对其粒度及复合体系稳定性的影响。

The Stability Effect of Polymer on the PbS Nanoparticles

Using SAXS method,the particle size and its distribution of the PbS nanoparticles doped in the polymer matrices were characterized.Based on the SAXS results together with direct observation,the effect of the reaction conditions on the stability of the composite system was obtained.The experiment revealed that the amount of the H2S used in reacting with the P-Pb can affect the PbS particle size and its distribution, but this effect is very small,because of the good stability effect of polymer on the PbS nanoparticles,the composite system possesses a long-term stability.While the particle size and its distribution can be changed in a larger range when small organic lead salt was introduced into the reaction system.The particle size and its distribution were growing as the increasing of the proportion of PB(MA)2 to P-Pb.As a result,the composite system lost its stability at high Pb(MA)2 concentration.