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. 2019 Dec 11;22(1):226–235. doi: 10.1080/15685551.2019.1699727

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© 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 6. — (a) Size distribution of MSN-PTBAEMA in buffer solution at different pH values. (b) The average particle size of MSN-PTAEBMA (I), Surface-quaternized of MSN-PTBAEMA (for 1 h) (II), Surface-quaternized of MSN-PTBAEMA (for 3 h) (III), and Surface-quaternized of MSN-PTBAEMA (for 24 h) (IV) at different pH values.