The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks
We report here on the characterization of classical bulk poly(N-isopropylacrylamide) (PNIPAAm) hydrogel networks. The classical PNIPAAm hydrogels were prepared from Nisopropylacrylamide (NIPAAm) as a main monomer and N,N‘-methylenebisacrylamide (MBAAm) as a crosslinker. The viscoelastic character of...
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my.utm.513682017-06-20T12:49:47Z http://eprints.utm.my/id/eprint/51368/ The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks Adrus, Nadia Ulbricht, Mathias TP Chemical technology We report here on the characterization of classical bulk poly(N-isopropylacrylamide) (PNIPAAm) hydrogel networks. The classical PNIPAAm hydrogels were prepared from Nisopropylacrylamide (NIPAAm) as a main monomer and N,N‘-methylenebisacrylamide (MBAAm) as a crosslinker. The viscoelastic character of bulk hydrogels was examined using rheological measurements under frequency sweep mode (20 °C). A range of frequency, ? from 0.1 to 100 rad/s, was employed as this is a typical range for ‘rubber plateau’. Within this range, almost frequency independent of storage moduli (G'; ~ 104 Pa as a function of hydrogel compositions were obtained. Indeed, the ‘perfect’ soft-rubbery behaviour of PNIPAAm hydrogels could be confirmed and thus enabled the estimation of mesh size. Interestingly, the mesh size rubbery hydrogels determined from rheological data was in a good agreement to that from swelling experiments (~ 4 to 9 nm). 2013 Conference or Workshop Item PeerReviewed Adrus, Nadia and Ulbricht, Mathias (2013) The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks. In: Advanced Materials Research. https://www.scientific.net/AMR.812.210.pdf |
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TP Chemical technology Adrus, Nadia Ulbricht, Mathias The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks |
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We report here on the characterization of classical bulk poly(N-isopropylacrylamide) (PNIPAAm) hydrogel networks. The classical PNIPAAm hydrogels were prepared from Nisopropylacrylamide (NIPAAm) as a main monomer and N,N‘-methylenebisacrylamide (MBAAm) as a crosslinker. The viscoelastic character of bulk hydrogels was examined using rheological measurements under frequency sweep mode (20 °C). A range of frequency, ? from 0.1 to 100 rad/s, was employed as this is a typical range for ‘rubber plateau’. Within this range, almost frequency independent of storage moduli (G'; ~ 104 Pa as a function of hydrogel compositions were obtained. Indeed, the ‘perfect’ soft-rubbery behaviour of PNIPAAm hydrogels could be confirmed and thus enabled the estimation of mesh size. Interestingly, the mesh size rubbery hydrogels determined from rheological data was in a good agreement to that from swelling experiments (~ 4 to 9 nm). |
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Conference or Workshop Item |
author |
Adrus, Nadia Ulbricht, Mathias |
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Adrus, Nadia Ulbricht, Mathias |
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Adrus, Nadia |
title |
The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks |
title_short |
The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks |
title_full |
The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks |
title_fullStr |
The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks |
title_full_unstemmed |
The rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks |
title_sort |
rubber elasticity of poly(n-isopropylacrylamide) hydrogel networks |
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2013 |
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http://eprints.utm.my/id/eprint/51368/ https://www.scientific.net/AMR.812.210.pdf |
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