pH-responsive gels of hydrophobically modified poly(acrylic acid)
Publication type: Journal Article
Publication date: 1997-12-01
scimago Q1
wos Q1
SJR: 1.352
CiteScore: 9.0
Impact factor: 5.2
ISSN: 00249297, 15205835
Materials Chemistry
Organic Chemistry
Inorganic Chemistry
Polymers and Plastics
Abstract
pH-responsive gels of hydrophobically modified (HM) weak polyacid were prepared from acrylic acid and n-alkyl acrylates (n = 8, 12, 18). The HM gels obtained bear up to 20 mol % of n-alkyl acrylate units randomly distributed along the network chains. The pH-driven swelling of these gels upon ionization in an aqueous medium was studied. The effect of the fraction and of the side chain length of n-alkyl acrylate groups on the equilibrium degree of swelling was examined. It was shown that the swelling transition shifts to alkaline pH with increasing hydrophobicity of the gel. This was explained by the stabilization of the collapsed state of the gel by hydrophobic aggregation of n-alkyl side chains. The formation of such aggregates, which break down in the course of gel ionization, was confirmed by the fluorescent probe method with pyrene as a probe and by NMR spectroscopy. Potentiometric titration data of HM poly(acrylic acid) (PAA) gels and of the corresponding linear copolymers evidence that the introducti...
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332
Total citations:
332
Citations from 2024:
17
(5.12%)
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GOST
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Philippova O. et al. pH-responsive gels of hydrophobically modified poly(acrylic acid) // Macromolecules. 1997. Vol. 30. No. 26. pp. 8278-8285.
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Philippova O., Hourdet D., Audebert R., Khokhlov A. R. pH-responsive gels of hydrophobically modified poly(acrylic acid) // Macromolecules. 1997. Vol. 30. No. 26. pp. 8278-8285.
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RIS
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TY - JOUR
DO - 10.1021/ma970957v
UR - https://doi.org/10.1021/ma970957v
TI - pH-responsive gels of hydrophobically modified poly(acrylic acid)
T2 - Macromolecules
AU - Philippova, O.E.
AU - Hourdet, Dominique
AU - Audebert, Roland
AU - Khokhlov, Alexei R.
PY - 1997
DA - 1997/12/01
PB - American Chemical Society (ACS)
SP - 8278-8285
IS - 26
VL - 30
SN - 0024-9297
SN - 1520-5835
ER -
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BibTex (up to 50 authors)
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@article{1997_Philippova,
author = {O.E. Philippova and Dominique Hourdet and Roland Audebert and Alexei R. Khokhlov},
title = {pH-responsive gels of hydrophobically modified poly(acrylic acid)},
journal = {Macromolecules},
year = {1997},
volume = {30},
publisher = {American Chemical Society (ACS)},
month = {dec},
url = {https://doi.org/10.1021/ma970957v},
number = {26},
pages = {8278--8285},
doi = {10.1021/ma970957v}
}
Cite this
MLA
Copy
Philippova, O.E., et al. “pH-responsive gels of hydrophobically modified poly(acrylic acid).” Macromolecules, vol. 30, no. 26, Dec. 1997, pp. 8278-8285. https://doi.org/10.1021/ma970957v.
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