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. Author manuscript; available in PMC: 2014 Jun 4.
Published in final edited form as: J Pharm Sci. 2013 Dec 30;103(2):567–579. doi: 10.1002/jps.23824

Table 2.

The Measured ξ -Potential and IEP Values for Pure HAp and HAp/Chitosan Composites Before and After the Drug Release Experiment

HAp As-Prepared HAp/Chitosan Postdegradation HAp/Chitosan
ξ -Potential (mV) −7.0 3.9 0.9
IEP 6.7 7.9 7.5