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Fabrication of aragonite rosette superstructure through the weak interaction between nonionic polymers and Ca 2+
Author(s) -
Shi Shuxian,
Su Zhiqiang,
Wei Hao,
Chen Xiaog
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30748
Subject(s) - aragonite , superstructure , polymer , crystallization , materials science , vinyl alcohol , polymer chemistry , amorphous solid , chemical engineering , calcium carbonate , side chain , chemistry , crystallography , organic chemistry , composite material , oceanography , engineering , geology
The controlled formation of aragonite by simple method under ambient condition is a big challenge for biomaterial scientists. In this article, we took poly ( N ‐vinyl pyrrolidone) (PVP) as an example to investigate the influence of water‐soluble nonionic polymers on the polymorphs of CaCO 3 via CO 2 diffusion method under ambient pressure and temperature, and found that the existence of PVP molecules favors the formation of aragonite with rosette superstructure. A possible mechanism is proposed that nonionic polymers can be doped into amorphous calcium carbonate (ACC) particles and further participate in the transformation process from ACC to aragonite and then promotes the formation of rosette superstructure through parallel aggregation by crosslinking the aragonite nuclei. The experiments of CaCO 3 crystallization in presence of poly(ethylene oxide) (PEO) and poly(vinyl alcohol) (PVA) confirmed the mechanism. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010