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Strategies for Hydrogen Bonding Based Layer-by-Layer Assembly of Poly(vinyl alcohol) with Weak Polyacids SCIE SCOPUS

Title
Strategies for Hydrogen Bonding Based Layer-by-Layer Assembly of Poly(vinyl alcohol) with Weak Polyacids
Authors
Lee, HyominMensire, RemyCohen, Robert E.Rubner, Michael F.
Date Issued
2012-01-10
Publisher
ACS
Abstract
Multilayer thin films that consist of poly(vinyl alcohol) (PVA) and weak polyacids such as poly(acrylic acid) (PAA) and poly(methacrylic acid) (PMAA) were prepared by hydrogen bonding interactions. Both the degree of hydrolysis and molecular weight of PVA were investigated in terms of their influence on growth behavior and pH stability. Multilayer films containing PVA and PAA could be assembled successfully only by using partially hydrolyzed PVA and low-pH solutions. By comparing films containing PAA with those containing a more strongly interacting partner, PMAA, it was shown that the extent of PVA hydrolysis becomes significant only when Weak,hydrogen bonding pairs such as PVA and PAA were used pH triggered dissolution experiments demonstrated that the degree of hydrolysis can be used as an additional parameter by which to tune the pH stability of the film. Also the presence of an abundance of free hydroxyl and carboxylic acid groups in the multilayer allowed enhanced pH stability to be obtained by thermal and chemical methods as well as numerous opportunities for postassembly functionalization.
URI
https://oasis.postech.ac.kr/handle/2014.oak/40835
DOI
10.1021/ma202092w
ISSN
0024-9297
Article Type
Article
Citation
Macromolecules, vol. 45, no. 1, page. 347 - 355, 2012-01-10
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이효민Lee, Hyomin
Dept. of Chemical Enginrg
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