Fig. 4

Release profiles of SB from (A) SWCNT-COOH, (B) SWSB-PEG, (C) SWSB-T80, (D) SWSB-CS and (E) SWSB-T20 at pH 7.4 with maximum release rate of 84, 99, 91, 73 and 58% respectively. Inset shows the initial release of the nanocomposites at pH 7.4 in the first 100 min