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Journal of Macromolecular Science, Part A
Pure and Applied Chemistry
Volume 48, 2011 - Issue 10
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Original Articles

Synthesis and Properties of pH-Responsive Polymers with Cadaverine Side Groups

Hong Wang School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, P. R. China; Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Jinan, China
,
Yebang Tan School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, P. R. China; Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Jinan, China
,
Yuejun Zhu Technology Research Dept. CNOOC Research Center, State Key Laboratory of Offshore Oil Exploitation, Beijing, China
,
Xu Du School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, P. R. China; Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Jinan, China
&
Lei Zhang School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong, P. R. China; Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Jinan, China
Pages 816-822 | Received 01 Mar 2011, Accepted 01 Apr 2011, Published online: 24 Aug 2011
 
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Abstract

A water-soluble monomer N1-(4-vinylbenzyl)-pentane-1,5-diamine dihydrochloride (VBPDA) with cadaverine (1,5-pentanediamine) group was synthesized. pH-responsive polymer with cadaverine group was obtained by free radical polymerization of VBPDA using 4,4-azobis(4-cyanovaleric acid) (ACVA) as the initiator. The structure and molecular weight of the polymer were characterized by FTIR, 1H-NMR and GPC-MALLS. Aggregation behavior of the polymer in aqueous solution was investigated by dynamic light scattering (DLS), UV-Vis and fluorescence measurements. The experimental results show that the fluorescence intensity of the aggregates decreases and the size of the aggregates increases with increasing pH due to the continuous dehydration of the cadaverine side groups.

Acknowledgments

The authors are grateful for financial support from the National Natural Science Foundation of China (No. 20674045) and Shandong Provincial Natural Science Foundation (No.Y2007B34 and Y2005B19).

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