Disassociation of Hydrogen-bonded Polymer Complex Thin Films in Acidic Solvents

	Disassociation of Hydrogen-bonded Polymer Complex Thin Films in Acidic Solvents
	Ma, Song-mei 1; Liu, Shu-yong 1; Zhang, Xue-jian 1; Yang, Shu-guang 1; Xu, Jian 2
刊名	ACTA POLYMERICA SINICA
	2015-07-20
期号	7 页码:786-791
关键词	Hydrogen bond detachment Layer-by-layer assembly Polymer complex
英文摘要	The hydrogen-bonded films were prepared via layer-by-layer assembly of poly (vinylpyrrolidone) (PVPON, hydrogen bond acceptors) and poly (acrylic acid) (PAA, hydrogen bond donors). UV-Visible spectra, FTIR spectra and AFM were used to investigate the hydrogen bond detachment and the film disintegration in acidic solvents :formic acid, trifluoroacetic acid, phosphoric acid and poly (phosphoric acid). The dissolution rate of the PVPON/PAA thin film in different acids was queued as trifluoroacetic acid > phosphoric acid > formic acid. The experimental results indicated that the mechanism of hydrogen bond detachment was not the same in different acids. Trifluoroacetic acid shows strong interaction with PAA, which induces the detachment of hydrogen bonds between PVPON and PAA, and thus the PVPON/PAA film dissolves. However, phosphoric acid or poly(phosphoric acid) has strong interaction with PVPON, which makes hydrogen bonds between PVPON and PAA break and the thin film decomposes. Poly (phosphoric acid) has more hydrogen bonding donor groups than phosphoric acid, and hence the interaction between poly(phosphoric acid) and PVPON exhibits an synergetic effect. Formic acid and PAA both belong to the family of carboxylic acids. It is very hard for formic acid to replace PAA to form hydrogen bond with PVPON, and hence the film dissolution rate in formic acid is very low.
收录类别	SCI
语种	英语
公开日期	2015-10-27
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27789]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ma, Song-mei,Liu, Shu-yong,Zhang, Xue-jian,et al. Disassociation of Hydrogen-bonded Polymer Complex Thin Films in Acidic Solvents[J]. ACTA POLYMERICA SINICA,2015(7):786-791.
APA	Ma, Song-mei,Liu, Shu-yong,Zhang, Xue-jian,Yang, Shu-guang,&Xu, Jian.(2015).Disassociation of Hydrogen-bonded Polymer Complex Thin Films in Acidic Solvents.ACTA POLYMERICA SINICA(7),786-791.
MLA	Ma, Song-mei,et al."Disassociation of Hydrogen-bonded Polymer Complex Thin Films in Acidic Solvents".ACTA POLYMERICA SINICA .7(2015):786-791.