2026-10-14T13:18:27Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33851227 2026-09-16T13:44:22Z portal_1197 item_type_3 month_year_09_2026

Data for Photocrosslinking of polyacrylamides using [2+2] photodimerisation of monothiomaleimides Mohammed Aljuaid (10491922) Hannes A. Houck (12400098) Spyridon Efstathiou (8816882) David M. Haddleton (1273797) Paul Wilson (146891) Crosslinking (Polymerization) Polyacrylamide Dimerization Migrated from ePrints 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.<br><br>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 2022-10-07T00:00:00Z Dataset Dataset 10.82444/warw.33851227.v1 https://figshare.com/articles/dataset/Data_for_Photocrosslinking_of_polyacrylamides_using_2_2_photodimerisation_of_monothiomaleimides/33851227 CC BY 4.0