Aljuaid, Mohammed, Houck, Hannes A., Efstathiou, Spyridon, Haddleton, David M. and Wilson, Paul (2022) Data for Photocrosslinking of polyacrylamides using [2+2] photodimerisation of monothiomaleimides. [Dataset]

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Abstract

The [2+2] photocycloaddition of monothiomaleimides (MTM) has been exploited for the photocrosslinking of polyacrylamides. Polymer scaffolds composed of dimethylacrylamide (DMA) and varying amounts of D,L-homocysteine thiolactone acrylamide(5, 10, and 20 mol%) were synthesised via free radical polymerisation (FRP), whereby the latent thiol-functionality was exploited to incorporate MTM motifs. Subsequent exposure to UV light (λ= 365 nm, 15 mWcm-2) triggered intermolecular crosslinking via the photodimerisation of MTM side chains, thus resulting in the formation of polyacrylamide gels. The polymer scaffolds were characterised using Fourier transform infrared spectroscopy (FT-IR), UV-Visible spectroscopy(UV-Vis), 1H NMR, and size exclusion chromatography(SEC), confirming the occurrence of the [2+2] photocycloaddition between the MTM moieties. The mechanical and physical properties of the resulting gels containing various MTM mol% were evaluated by rheology, compression testing, and swelling experiments. In addition, scanning electron microscopy (SEM) was used to characterise the xerogel morphology of5 and 10 mol% MTM hydro-and organo-gels. The macro-porous morphology obtained for the hydrogels was attributed to phase separation due to the difference insolubility of the PDMA modified with thiolactone side chains, provided that a more homogeneous morphology was obtained when the photo-gels were prepared in DMF as the solvent.

Item Type:	Dataset
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Science, Engineering and Medicine > Science > Chemistry
Library of Congress Subject Headings (LCSH):	Crosslinking (Polymerization), Polyacrylamide, Dimerization
Publisher:	University of Warwick, Department of Chemistry
Official Date:	7 October 2022
Dates:	Date Event 7 October 2022 Published 4 October 2022 Available 4 October 2022 Created
Status:	Not Peer Reviewed
Media of Output (format):	.txt, .par, .info
Access rights to Published version:	Open Access (Creative Commons)
Copyright Holders:	University of Warwick
Description:	Dataset (Zip file) contains data for following items: Figure 2; Figure 3; Figure 4; Figure 5; Figure 7; Figure 8; Figure 9; Figure 10; Figure S1; Figure S2; Figure S3; Figure S4; Figure S5; Figure S6; Figure S7; Figure S8; Figure S9; Figure S10; Figure S11; Figure S12; Figure S13; Figure S15; Figure S16; Table 1 and Table S1
Date of first compliant deposit:	4 October 2022
Date of first compliant Open Access:	7 October 2022
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID UNSPECIFIED University of Warwick http://dx.doi.org/10.13039/501100000741 UNSPECIFIED Taif University http://dx.doi.org/10.13039/501100006261 945380 H2020 Marie Skłodowska-Curie Actions http://dx.doi.org/10.13039/100010665 URF\R1\180274 Royal Society http://dx.doi.org/10.13039/501100000288 URF\R1\180274 Tata Steel http://dx.doi.org/10.13039/501100007220
Related URLs:	Related item in WRAP
Contributors:	Contribution Name Contributor ID Depositor Wilson, Paul 32682

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