Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 361, Issue 1, Pages 122-128Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2011.05.049
Keywords
Hydrolytical-polybetaine; Layer-by-layer assembly; Tunable disintegration; Wide-range time
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Funding
- Natural Science Foundation of China [20876134, 50633030, 90101024]
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A cationic hydrolytical-polycarboxybetaine (HPCB), poly(N-ethyl acetate-4-vinylpyridinium bromide) was synthesized by incorporating ester group into the side chain of polycarboxybetaine (PCB). The hydrolytic behaviors of HPCB samples in pH 7.4 phosphate buffer saline (PBS) were investigated by FT-IR and H-1 NMR. The layer-by-layer (LbL) assembly of HPCB/poly (sodium 4-styrenesulfonate) PSS and the disintegration of HPCB/PSS multilayer films were monitored by UV-vis absorption spectroscopy, quartz crystal microbalance (QCM) and atomic force microscopy (AFM). The disintegrated behavior of multilayer films was studied in detail by changing the cationic degree of HPCB and the pH of the immersion solution (PBS) in the disintegration process. The disintegration time of HPCB/PSS multilayer films could be controlled widely from 2 min to 30 days in PBS. Crown Copyright (C) 2011 Published by Elsevier Inc. All rights reserved.
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