Morphological Control of Calcium Carbonate Particles by a Novel Polymer-Surfactant Aggregate
In this paper, calcium carbonate particles with unusual morphologies could be successfully synthesized by a precipitation reaction of sodium carbonate with calcium chloride in the presence of a novel polymer-surfactant aggregate consisting of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEG-PPG-PEG) and sodium dodecyl sulfonate (SDS). The as-prepared products were characterized with scanning electron microscopy and X-ray diffraction. The results showed that the SDS concentrations, the molar ratio of CO3 2- to Ca2+ (R), and the reactive temperature in the mixed system turned out to be important parameters for control of morphologies of the as-prepared CaCO3 particles. Various unusual crystal morphologies, such as hollow microsphere, cubic, and rombehedra, etc., can be obtained depending on the experimental conditions. Moreover, the formation mechanisms of calcium carbonate with different morphologies were discussed.
Calcium carbonate Morphology Sodium dodecyl sulfate (SDS) Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethyleneglycol) (PEG-PPG-PEG)
Hua Tang Xiaofei Yang Qiong Wu Changsheng Li Xuehua Yan
School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu Province212013, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu Province 212013,
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
168-174
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）