十二烷基磺酸钠和聚丙稀酸钠对硫酸钙形貌的调控  

The Change of Crude Gesso Mineral Character by PAANa and SDS

作　　者：任引哲[1] 王晓东[1] 王建英[1] 

机构地区：[1]山西师范大学化学与材料科学学院,山西临汾041004

出　　处：《山西师范大学学报（自然科学版）》2005年第4期53-56,共4页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：该项目获山西省自然科学基金资助(20031020)

摘　　要：采用结晶槽法合成了硫酸钙晶体.考察了在恒定过饱和度下,十二烷基磺酸钠和聚丙烯酸钠,对CaSO4.2H2O晶体形貌的调控作用.利用显微镜观察其形貌,用XRD测定了其晶型.结果表明:所得到的晶体都是CaSO4.2H2O,属单斜晶系.在常温常压下,新生成的CaSO4.2H2O晶体的形貌一般是针状的.加入PAANa后,CaSO4.2H2O晶体的形貌由针状逐渐向羽毛状、带刺的羽毛状、带刺的棒状转化;;用SDS代替PAANa后,可以得到在常温下难以得到的,非常规则的六棱柱形CaSO4.2H2O单晶.CaSO4·2H2O crystals were prepared by rime trough means. The change of crude gesso mineral character by PAANa and SDS were researched in this paper at a certain super saturation. The chemical composition and structural features of the products were investigated by microscope and XRD. The results indicated the deposition was calcium sulfate with two waters, belonging to the system of the monoclinic crystal. It also shows at the room temperature, the morphology of CaSO4·2H2O is spiculate. The morphology of CaSO4·2H2O is gradually changed from the needle and clava to the feather for affiliating of PAANa and it is altered to the rule columniation by affiliating of SDS.

关 键 词：二水合硫酸钙 十二烷基硫酸钠 聚丙烯酸钠 调控剂 

分 类 号：O648[理学—物理化学]