Effect of H-bonding on network junction and macroscopic elastomer properties in photocured polyacrylate films. Wu, B., Chassé, W., Heise, A., Kentgens, A. P. M., Brougham, D. F., & Litvinov, V. M. Materials Chemistry Frontiers, 6(8):990–1004, April, 2022. Publisher: The Royal Society of Chemistry![Effect of H-bonding on network junction and macroscopic elastomer properties in photocured polyacrylate films [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Two series of polyacrylate films with different H-bonding capable monoacrylate copolymers were synthesized by UV-initiated photo-polymerization. Detailed IR analyses on cured samples show that networks made from structurally distinguishable mono-acrylate have significantly different extent of H-bonded monoacrylate present. We found that this is induced by differences in the relative reaction rate between homo-polymerization and copolymerization of the relevant monoacrylates and crosslinker (PEGDA). Although ‘pre-organization’ of H-bond capable monoacrylates was observed for those tested formulations prior to crosslinking, which should significantly increase the homo-polymerization rate, it was found that the co-polymerization rate was also significantly increased. Furthermore, DQ NMR analyses on these networks pinpoints the presence of H-bonding clusters, which decreases mobility of chain segments near the H-bonding functional groups in the monoacrylate sidechains (dangling chain segments of monoacrylate). However, the overall network topology does not alter significantly upon forming H-bonding clusters in the monoacrylate sidechains. Finally it was also found that larger H-bonding clusters increase the apparent network junction functionality. These findings are discussed in the context of utilizing the H-bonding capable monoacrylates to tailor the microscopic topological properties as well as macroscopic physical properties of photocured polyacrylate polymer films.
@article{wu_effect_2022,
title = {Effect of {H}-bonding on network junction and macroscopic elastomer properties in photocured polyacrylate films},
volume = {6},
issn = {2052-1537},
url = {https://pubs.rsc.org/en/content/articlelanding/2022/qm/d1qm01535d},
doi = {10.1039/D1QM01535D},
abstract = {Two series of polyacrylate films with different H-bonding capable monoacrylate copolymers were synthesized by UV-initiated photo-polymerization. Detailed IR analyses on cured samples show that networks made from structurally distinguishable mono-acrylate have significantly different extent of H-bonded monoacrylate present. We found that this is induced by differences in the relative reaction rate between homo-polymerization and copolymerization of the relevant monoacrylates and crosslinker (PEGDA). Although ‘pre-organization’ of H-bond capable monoacrylates was observed for those tested formulations prior to crosslinking, which should significantly increase the homo-polymerization rate, it was found that the co-polymerization rate was also significantly increased. Furthermore, DQ NMR analyses on these networks pinpoints the presence of H-bonding clusters, which decreases mobility of chain segments near the H-bonding functional groups in the monoacrylate sidechains (dangling chain segments of monoacrylate). However, the overall network topology does not alter significantly upon forming H-bonding clusters in the monoacrylate sidechains. Finally it was also found that larger H-bonding clusters increase the apparent network junction functionality. These findings are discussed in the context of utilizing the H-bonding capable monoacrylates to tailor the microscopic topological properties as well as macroscopic physical properties of photocured polyacrylate polymer films.},
language = {en},
number = {8},
urldate = {2022-11-16},
journal = {Materials Chemistry Frontiers},
author = {Wu, Bing and Chassé, Walter and Heise, Andreas and Kentgens, Arno P. M. and Brougham, Dermot F. and Litvinov, Victor M.},
month = apr,
year = {2022},
note = {Publisher: The Royal Society of Chemistry},
pages = {990--1004},
}
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