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Synthesis of Spherical CaCO3 by Polyvinyl Alcohol as Additive(PDF)

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2008年01期
Page:
64-68
Research Field:
Publishing date:

Info

Title:
Synthesis of Spherical CaCO3 by Polyvinyl Alcohol as Additive
Author(s):
Zou KongbiaoWang WeiLu WenqingNie Suyun
School of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097,China
Keywords:
PVA spherical crystal CaCO3 vate rite
PACS:
TB383.4
DOI:
-
Abstract:
Va terite type o f CaCO3 spher ica l crysta l is b ion ica lly synthesized w ith polyv iny l a lcoho l as organ ic basic substance, by con tro lling the appropriate reaction conditions, simuo la ting the b io log ical m ineralization o f CaCO3. The e ffects of PVA, CaC l2 and tem pe ra ture on them orpho logy o f CaCO3 are investigated. It is found that in the g iven cond-i tions, CaCO3 crystal can be successfu lly induced to grow into a spher ica l crystal by ad justing the PVA concentration, the size of vate rite becom es la rger when the CaC l2 concentration is decreased, surface structure o f va terite can be changed when tem pera ture is changed. This m ay be re ferenced to syn thesis nove lm ate rials.

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Last Update: 2013-04-24