软模板调控碳酸锶结晶特性的研究

Study on Using Soft-templates to Regulate and Control Crystal Speciality of Strontium Carbonate

本文在实验室的条件下,通过用均相沉淀法和共沉淀法,采用多聚磷酸钠、酒石酸钠、EDTA/氯化锌、EDTA、氯化镁作为晶形控制剂分别合成了长为2-4μm,直径为200nm左右的柱状、长为1-3μm,直径为80nm左右的线状、长为1-2μm,直径为50nm左右的线状、粒径为200nm左右的球状以及粒径为2-3μm的不规则状等碳酸锶晶体。并且对利用多种软模板调控碳酸锶晶体的生长机理进行了初步的分析,得出了软模板导致晶体结晶的大小和形貌变化的多样性机理。

In this paper, strontium carbonate, which included length of 2-4μm, diameter of 200nm pillar- like crystal; length of 1-3μm,diameter of 80nm fiber-like crystal; length of 1-2μm, diameter of 50nm fiber-like crystal; the granularity of 200nm sphere-like crystal; the granularity of 2-3μm anomalous crystal, were prepared using homogeneous precipitation method and coprecipitation method by adding different crystal form controlling agent such as： polymer-sodium phosphate, sodium tartrate, EDTA/zinc chloride, EDTA, magnesia chloride. The mechanism of soft-templates to regulate and control the crystal speciality of strontium carbonate was analyzed. The result of diverse mechanism which soft-templates induce the transformation of size and shape of crystal was deduced.