The method of surface modification of potassium titanate whiskers with nanometer calcium carbonate

The method of surface modification of potassium titanate whiskers with nanometer calcium carbonate In the study potassium titanate whiskers (PTW, K2Ti6O13) coated with nanometer calcium carbonate (C-PTW) were firstly prepared by adding carbon dioxide into the solution of calcium chloride and PTW; then coupling agent KH550 was used to modify the surface of C-PTW. The surface properties of the modified PTW were characterized by methods of SEM, EDS, XRD, FTIR spectroscopy, UV-Vis absorption spectra, and surface contact angle measurement. The results indicated that the appropriate coating ratio of CaCO3 to PTW was 0.07: 1, and that the ideal ratio of KH550 to C-PTW was 0.035: 1 by maximum settlement time. The surface of the modified C-PTW (K-C-PTW) showed excellent lipotropic properties and mobility because the surface of PTW coated by calcium carbonate possessed more hydroxyl groups than that of PTW, so the reaction between C-PTW and KH550 proceeded easier. It could be expected that the simple method may contribute to solve the problem of agglomeration for PTW in the application of composite material. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

The method of surface modification of potassium titanate whiskers with nanometer calcium carbonate

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Publisher
Pleiades Publishing
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427216090214
Publisher site
See Article on Publisher Site

Abstract

In the study potassium titanate whiskers (PTW, K2Ti6O13) coated with nanometer calcium carbonate (C-PTW) were firstly prepared by adding carbon dioxide into the solution of calcium chloride and PTW; then coupling agent KH550 was used to modify the surface of C-PTW. The surface properties of the modified PTW were characterized by methods of SEM, EDS, XRD, FTIR spectroscopy, UV-Vis absorption spectra, and surface contact angle measurement. The results indicated that the appropriate coating ratio of CaCO3 to PTW was 0.07: 1, and that the ideal ratio of KH550 to C-PTW was 0.035: 1 by maximum settlement time. The surface of the modified C-PTW (K-C-PTW) showed excellent lipotropic properties and mobility because the surface of PTW coated by calcium carbonate possessed more hydroxyl groups than that of PTW, so the reaction between C-PTW and KH550 proceeded easier. It could be expected that the simple method may contribute to solve the problem of agglomeration for PTW in the application of composite material.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Jan 3, 2017

References

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