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. Author manuscript; available in PMC: 2013 May 13.
Published in final edited form as: Chem Rev. 2008 Nov;108(11):10.1021/cr800443h. doi: 10.1021/cr800443h

Figure 21.

Figure 21

Kato and co-worker’s254 thin films of CaCO3 grown on polysaccharide substrates in the presence of soluble PAA (Mw=2,000). (a) CaCO3 films deposited on a hydrogel matrix of cholesterol-modified pullulan (a glucose-based polysaccharide) yielded a periodic relief structure. The underlying texture of the film is spherulitic, as seen in the partial spherulite in the inset. (b) At higher magnification, one can see the radial growths of the polycrystals. (c) Films that were formed rapidly produced a corrugated structure, such as the film here, where the reaction was carried out at 50°C (for 4 hours), as compared to the film shown in (b), which was formed for 2 days at 10°C. (a–c) (Reprinted with permission from ref 254. Copyright 2003 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)