PEG-Immobilized Keratin for Protein Drug Sequestration and pH-Mediated Delivery

Figure 3

Swelling behavior of PEG and KTN-PEG scaffolds with time at linear (a) and semilog (b) scales. Equilibrium (eq) was attained at 30 min for PEG and at 10 min for KTN-PEG. KTN-PEG samples absorbed water faster due to network-associated hydrophilic keratin proteins.

(a)

(b)