Tunable disintegration of layer-by-layer assembly multilayer films based on hydrolytical-polybetaine at wide-range time

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• 作者：Zhangliang Gui^a ; Jinwen Qian ; ^a ; ^{qianjw@zju.edu.cn"" rel=""nofollow} ; Yuan He^a ; Quanfu An^a ; Xuesan Wang^a ; Chengpeng Tian^a ; Wendan Sun^a
• 关键词：Hydrolytical-polybetaine ; Layer-by-layer assembly ; Tunable disintegration ; Wide-range time
• 刊名：Journal of Colloid and Interface Science
• 出版年：2011
• 出版时间：1 September 2011
• 年：2011
• 卷：361
• 期：1
• 页码：122-128
• 全文大小：980 K

文摘

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 ¹H 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.