Synthesis and characterization of new CaCO₃/poly(2-acrylamido-2-methylpropanesulfonic acid-co-acrylic acid) polymorphs, as templates for core/shell particles

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• 作者：Marcela Mihai^a ; ^{marcelas@icmpp.ro} ; Florin Buc膬tariu^a ; Magda Aflori^a ; Simona Schwarz^b
• 关键词：A1. Biomaterials ; A1. Characterization ; A2. Growth from solutions ; B1. Calcium compounds ; B1. Polymers
• 刊名：Journal of Crystal Growth
• 出版年：2012
• 期刊代码：49_00220248
• 类别：ch
• 出版时间：15 July, 2012
• 卷：351
• 期：1
• 页码：23-31
• 文件大小：1227 K

摘要

The crystallization of CaCO₃ particles from aqueous solutions in the absence and presence of a strong/weak anionic copolymer, poly(2-acrylamido-2-methylpropanesulfonic acid-co-acrylic acid) (PAMPSAA) is discussed in this paper. Vaterite/calcite polymorphs with different sizes and spherical shapes were obtained. The products were characterized by infrared spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, flow particle image analysis, laser diffraction technology, and SEM and optical microscopy. Oppositely charged chitosan and PAMPSAA were assembled onto carbonate colloidal particles in a layer-by-layer manner to yield core-shell structures.