Template Effect of Crystalline Poly(vinyl alcohol) for Selective Formation of Aragonite and Vaterite CaCO3 Thin Films

• Published in: Macromolecules Vol. 36; no. 17; pp. 6449 - 6452
• Main Authors: Hosoda, Naoya, Sugawara, Ayae, Kato, Takashi
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 26.08.2003
• Subjects: Applied sciences; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids); Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Organic polymers; Physicochemistry of polymers; Physics; Properties and characterization; Special properties (catalyst, reagent or carrier); Polyvinylalcohol; Aragonite; Crystal form; Acrylic acid polymer; Calcium carbonate; Crystal growth from solutions; Glutamic acid polymer; Experimental study; Template activity; Inorganic compound; Thin film
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/ma025869b

Aragonite thin films of calcium carbonate are selectively formed on crystalline poly(vinyl alcohol) matrices in the presence of poly(acrylic acid) in CaCO3 solution. For thin film formation, this is the first example in which aragonite is formed selectively by cooperation of only synthetic organic macromolecules. In contrast, the addition of poly(glutamic acid) results in the formation of vaterite thin films on the crystalline poly(vinyl alcohol) matrices. These results show that crystalline poly(vinyl alcohol) matrices can be used to select the polymorph from aragonite and vaterite by changing the soluble additive.