Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) hydrogels

A swelling study in surfactant and polymer solutions

Murali Yallapu, T. Premkumar, D. K. Joseph, K. E. Geckeler

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) [poly(NIPAM-co-SA)] hydrogel networks were prepared by aqueous free-radical copolymerization using the ammonium persulfate/N,N,N1,N1-tetramethylethylenediamine (APS/TMEDA) redox-pair initiator system in the presence of different amounts of N,N1-methylenebisacrylamide (MBA) crosslinker. Higher swelling capacities were availed for these N-isopropylacrylamide-based hydrogels due to the presence of the hydrophilic poly(sodium acrylate) anionic units. In this the swelling phenomena of hydrogels in different surfactant and polymer solutions are investigated in a systematic way. The structural variation as well as the thermal stability of the surfactant-modified hydrogels were studied in detail. Further, the hydrogels swelling/diffusion kinetic parameters were investigated and a non-Fickian type of diffusion characteristics was found in all the swelling media for the diffusion of water into these hydrogels.

Original languageEnglish (US)
Pages (from-to)844-858
Number of pages15
JournalReactive and Functional Polymers
Volume67
Issue number9
DOIs
StatePublished - Sep 1 2007

Fingerprint

Hydrogels
Polymer solutions
Surface-Active Agents
swelling
carbopol 940
surfactant
Swelling
Polymers
Surface active agents
polymer
Sodium
sodium
free radical
Hydrogel
Ammonium persulfate
ammonium
Kinetic parameters
Copolymerization
Oxidation-Reduction
Free Radicals

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Biochemistry
  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

Cite this

Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) hydrogels : A swelling study in surfactant and polymer solutions. / Yallapu, Murali; Premkumar, T.; Joseph, D. K.; Geckeler, K. E.

In: Reactive and Functional Polymers, Vol. 67, No. 9, 01.09.2007, p. 844-858.

Research output: Contribution to journalArticle

@article{aca7d3ffff3945cc87cd8b06e5e77ccb,
title = "Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) hydrogels: A swelling study in surfactant and polymer solutions",
abstract = "Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) [poly(NIPAM-co-SA)] hydrogel networks were prepared by aqueous free-radical copolymerization using the ammonium persulfate/N,N,N1,N1-tetramethylethylenediamine (APS/TMEDA) redox-pair initiator system in the presence of different amounts of N,N1-methylenebisacrylamide (MBA) crosslinker. Higher swelling capacities were availed for these N-isopropylacrylamide-based hydrogels due to the presence of the hydrophilic poly(sodium acrylate) anionic units. In this the swelling phenomena of hydrogels in different surfactant and polymer solutions are investigated in a systematic way. The structural variation as well as the thermal stability of the surfactant-modified hydrogels were studied in detail. Further, the hydrogels swelling/diffusion kinetic parameters were investigated and a non-Fickian type of diffusion characteristics was found in all the swelling media for the diffusion of water into these hydrogels.",
author = "Murali Yallapu and T. Premkumar and Joseph, {D. K.} and Geckeler, {K. E.}",
year = "2007",
month = "9",
day = "1",
doi = "10.1016/j.reactfunctpolym.2007.05.008",
language = "English (US)",
volume = "67",
pages = "844--858",
journal = "Reactive and Functional Polymers",
issn = "1381-5148",
publisher = "Elsevier",
number = "9",

}

TY - JOUR

T1 - Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) hydrogels

T2 - A swelling study in surfactant and polymer solutions

AU - Yallapu, Murali

AU - Premkumar, T.

AU - Joseph, D. K.

AU - Geckeler, K. E.

PY - 2007/9/1

Y1 - 2007/9/1

N2 - Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) [poly(NIPAM-co-SA)] hydrogel networks were prepared by aqueous free-radical copolymerization using the ammonium persulfate/N,N,N1,N1-tetramethylethylenediamine (APS/TMEDA) redox-pair initiator system in the presence of different amounts of N,N1-methylenebisacrylamide (MBA) crosslinker. Higher swelling capacities were availed for these N-isopropylacrylamide-based hydrogels due to the presence of the hydrophilic poly(sodium acrylate) anionic units. In this the swelling phenomena of hydrogels in different surfactant and polymer solutions are investigated in a systematic way. The structural variation as well as the thermal stability of the surfactant-modified hydrogels were studied in detail. Further, the hydrogels swelling/diffusion kinetic parameters were investigated and a non-Fickian type of diffusion characteristics was found in all the swelling media for the diffusion of water into these hydrogels.

AB - Stimuli-responsive poly(N-isopropylacrylamide-co-sodium acrylate) [poly(NIPAM-co-SA)] hydrogel networks were prepared by aqueous free-radical copolymerization using the ammonium persulfate/N,N,N1,N1-tetramethylethylenediamine (APS/TMEDA) redox-pair initiator system in the presence of different amounts of N,N1-methylenebisacrylamide (MBA) crosslinker. Higher swelling capacities were availed for these N-isopropylacrylamide-based hydrogels due to the presence of the hydrophilic poly(sodium acrylate) anionic units. In this the swelling phenomena of hydrogels in different surfactant and polymer solutions are investigated in a systematic way. The structural variation as well as the thermal stability of the surfactant-modified hydrogels were studied in detail. Further, the hydrogels swelling/diffusion kinetic parameters were investigated and a non-Fickian type of diffusion characteristics was found in all the swelling media for the diffusion of water into these hydrogels.

UR - http://www.scopus.com/inward/record.url?scp=34548118175&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548118175&partnerID=8YFLogxK

U2 - 10.1016/j.reactfunctpolym.2007.05.008

DO - 10.1016/j.reactfunctpolym.2007.05.008

M3 - Article

VL - 67

SP - 844

EP - 858

JO - Reactive and Functional Polymers

JF - Reactive and Functional Polymers

SN - 1381-5148

IS - 9

ER -