Morphological control or CaCO3 particles by a double-hydrophilic block copolymer in mixed alcohol-water solvents

作者：Qi LM^*; Li J; Ma JM

来源：Chemical Journal of Chinese Universities, 2002, 23(8): 1595-1597.

• double-hydrophilic block copolymer
• CaCO3 particles
• morphological control
• mixed solvents
• biomimetic synthesis

The crystallization of calcite from mixed alcohol-water solvents in the presence of a double-hydrophilic block copolymer poly (ethylene glycol)-block-poly (methacrylic acid) (PEG-b-PMAA) has been investigated. It was revealed that with increasing the volume fractions of ethanol or isopropanol, the morphology of the CaCO3 particles generally varies from peanuts through rods to spheres in the presence of the polymer. Specifically, uniform rounded calcite rods, which are about 2 mum in length with an aspect ratio of 2. 6, were obtained in the isopropanol solution with volume fraction 50%.

• 出版日期2002-8
• 单位北京大学