Synthesis of boronate-contaming copolymers of N,N-dimethylacrylamide, their interaction with poly(vinyl alcohol) and rheological behaviour of the gels
(2004) In Polymer 45(8). p.2495-2505- Abstract
- Cross-linking of polyvinylalcohol (PVA) by boronate-containing copolymer of N,N-dimethylacrylamide (DMAA, 1) was studied and compared to cross-linking of PVA by borate buffers in weakly alkaline solutions. The copolymer of M-w = 19,000 g mor(-1) containing 9 mol% N-acryloyl-m-aminophenylboronic acid (NAAPBA, 2) was prepared by free radical polymerization of the monomers, exhibiting copolymerization constants r(1) = 0.84 and r(2) = 2.2. Due to multipoint interaction of the copolymer with PVA via monodiols, the intermolecular cross-linking required for seven-fold and 10-fold lower boron concentrations as compared to borate buffers of pH 8.6 and 7.5, respectively. In theological measurements, PVA-copolymer gels exhibited storage moduli... (More)
- Cross-linking of polyvinylalcohol (PVA) by boronate-containing copolymer of N,N-dimethylacrylamide (DMAA, 1) was studied and compared to cross-linking of PVA by borate buffers in weakly alkaline solutions. The copolymer of M-w = 19,000 g mor(-1) containing 9 mol% N-acryloyl-m-aminophenylboronic acid (NAAPBA, 2) was prepared by free radical polymerization of the monomers, exhibiting copolymerization constants r(1) = 0.84 and r(2) = 2.2. Due to multipoint interaction of the copolymer with PVA via monodiols, the intermolecular cross-linking required for seven-fold and 10-fold lower boron concentrations as compared to borate buffers of pH 8.6 and 7.5, respectively. In theological measurements, PVA-copolymer gels exhibited storage moduli (G'(max) comparable to those of PVA-borate gels prepared at 7.5-fold higher boron concentration and the same pH 8.6, what testified to the similar concentration of cross-links in the gels. Therefore, DMAA-NAAPBA copolymer is a more effective cross-linker of PVA than borate. The PVA-copolymer gel exhibited much higher relaxation time (97 s) compared to PVA-borate gels (less than or equal to20 s) indicating a longer lifetime of junction zones. The 'shape stability, of the gel is suggested to originate in the structure of junctions, containing several boronate-diol complexes, between the macromolecules of PVA and the copolymer. (C) 2004 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/140708
- author
- Ivanov, Alexander LU ; Larsson, Helena LU ; Galaev, Igor LU and Mattiasson, Bo LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Boronate, Poly(vinyl alcohol), Rheological behaviour NAAPBA, N-acryloyl-m-phenylboronic acid, DMAA, N-dimethylacrylamide, PVA, poly(vinyl alcohol)
- in
- Polymer
- volume
- 45
- issue
- 8
- pages
- 2495 - 2505
- publisher
- Elsevier
- external identifiers
-
- wos:000220533500004
- scopus:1642356715
- ISSN
- 0032-3861
- DOI
- 10.1016/j.polymer.2004.02.022
- language
- English
- LU publication?
- yes
- id
- cfff6c97-b719-4981-9f30-56ca45e1d976 (old id 140708)
- date added to LUP
- 2016-04-01 16:09:59
- date last changed
- 2023-11-14 06:11:58
@article{cfff6c97-b719-4981-9f30-56ca45e1d976,
abstract = {{Cross-linking of polyvinylalcohol (PVA) by boronate-containing copolymer of N,N-dimethylacrylamide (DMAA, 1) was studied and compared to cross-linking of PVA by borate buffers in weakly alkaline solutions. The copolymer of M-w = 19,000 g mor(-1) containing 9 mol% N-acryloyl-m-aminophenylboronic acid (NAAPBA, 2) was prepared by free radical polymerization of the monomers, exhibiting copolymerization constants r(1) = 0.84 and r(2) = 2.2. Due to multipoint interaction of the copolymer with PVA via monodiols, the intermolecular cross-linking required for seven-fold and 10-fold lower boron concentrations as compared to borate buffers of pH 8.6 and 7.5, respectively. In theological measurements, PVA-copolymer gels exhibited storage moduli (G'(max) comparable to those of PVA-borate gels prepared at 7.5-fold higher boron concentration and the same pH 8.6, what testified to the similar concentration of cross-links in the gels. Therefore, DMAA-NAAPBA copolymer is a more effective cross-linker of PVA than borate. The PVA-copolymer gel exhibited much higher relaxation time (97 s) compared to PVA-borate gels (less than or equal to20 s) indicating a longer lifetime of junction zones. The 'shape stability, of the gel is suggested to originate in the structure of junctions, containing several boronate-diol complexes, between the macromolecules of PVA and the copolymer. (C) 2004 Elsevier Ltd. All rights reserved.}},
author = {{Ivanov, Alexander and Larsson, Helena and Galaev, Igor and Mattiasson, Bo}},
issn = {{0032-3861}},
keywords = {{Boronate; Poly(vinyl alcohol); Rheological behaviour
NAAPBA; N-acryloyl-m-phenylboronic acid; DMAA; N-dimethylacrylamide; PVA; poly(vinyl alcohol)}},
language = {{eng}},
number = {{8}},
pages = {{2495--2505}},
publisher = {{Elsevier}},
series = {{Polymer}},
title = {{Synthesis of boronate-contaming copolymers of N,N-dimethylacrylamide, their interaction with poly(vinyl alcohol) and rheological behaviour of the gels}},
url = {{http://dx.doi.org/10.1016/j.polymer.2004.02.022}},
doi = {{10.1016/j.polymer.2004.02.022}},
volume = {{45}},
year = {{2004}},
}