ICCAS OpenIR
Salt-induced erosion of hydrogen-bonded layer-by-layer assembled films
Lin, Wang1; Guan, Ying1; Zhang, Yongjun1; Xu, Jian2; Zhu, X. X.3
2009
Source PublicationSOFT MATTER
ISSN1744-683X
Volume5Issue:4Pages:860-867
AbstractHydrogen-bonded layer-by-layer assembled films from poly(vinyl pyrrolidone) (PVPON) and poly(acrylic acid) (PAA) were fabricated. Fabry-Perot fringes were used as a simple but efficient method for studying the structure changes in the films during salt treatment. Results indicate that these films are very sensitive to salt when incubated in water. A brief treatment in salt solution of low concentration results in microphase separation in the films, the extent of which increases with increasing pH and salt concentration. The microphase separation in PVPON-PAA films is explained by the enhanced dissociation of PAA, which partially breaks the hydrogen bonds in the films. More importantly, the erosion of the PVPON-PAA films accelerates greatly in salt solution. Morphology changes during the erosion suggest a dewetting process of the films, which facilitates their dissolution. Finally, salt-triggered, rapid release of ibuprofen was achieved by the quick, salt-induced erosion of the hydrogen-bonded films.
DOI10.1039/b813614a
Indexed BySCI
Language英语
WOS IDWOS:000263272300022
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67600
Collection中国科学院化学研究所
Corresponding AuthorGuan, Ying
Affiliation1.Nankai Univ, Coll Chem, Inst Polymer Chem, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China
2.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
3.Univ Montreal, Dept Chem, Montreal, PQ H3C 3J7, Canada
Recommended Citation
GB/T 7714
Lin, Wang,Guan, Ying,Zhang, Yongjun,et al. Salt-induced erosion of hydrogen-bonded layer-by-layer assembled films[J]. SOFT MATTER,2009,5(4):860-867.
APA Lin, Wang,Guan, Ying,Zhang, Yongjun,Xu, Jian,&Zhu, X. X..(2009).Salt-induced erosion of hydrogen-bonded layer-by-layer assembled films.SOFT MATTER,5(4),860-867.
MLA Lin, Wang,et al."Salt-induced erosion of hydrogen-bonded layer-by-layer assembled films".SOFT MATTER 5.4(2009):860-867.
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