Fig. 1. The morphology of PAAM hydrogel after swelling: a) PAAM_1 ; b) PAAM_2; c) PAAM_3; d) PAAM_4; e) PAAM_5; and
f) PAAM_6 at magnification of 350.
Fig. 2. Degree of swelling of polyacrylamide hydrogel.
DSC thermograms of, aloein-loaded PAAM hydrogel, and PAAM hydrogel were measured to
investigate the interaction between aloein and the polyacrylamide matrix. The melting temperature (Tm)
of PAAM is 219 ˚
C, consistent with a previous report [Sairam et al., 2006]. However, the Tm of PAAM in
aloein-loaded PAAM occurs at 241 o
C, suggesting that aloein possibly interacts with the PAAM hydrogel
through hydrogen bonding between the hydroxyl groups of the aloein and the amine groups of the PAAM
hydrogel
Fig. 1. The morphology of PAAM hydrogel after swelling: a) PAAM_1 ; b) PAAM_2; c) PAAM_3; d) PAAM_4; e) PAAM_5; andf) PAAM_6 at magnification of 350.Fig. 2. Degree of swelling of polyacrylamide hydrogel. DSC thermograms of, aloein-loaded PAAM hydrogel, and PAAM hydrogel were measured toinvestigate the interaction between aloein and the polyacrylamide matrix. The melting temperature (Tm)of PAAM is 219 ˚C, consistent with a previous report [Sairam et al., 2006]. However, the Tm of PAAM inaloein-loaded PAAM occurs at 241 oC, suggesting that aloein possibly interacts with the PAAM hydrogelthrough hydrogen bonding between the hydroxyl groups of the aloein and the amine groups of the PAAMhydrogel
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