Sustained drug release on temperature-responsive poly(N-isopropylacrylamide)-integrated hydroxyapatite
Abstract
A hybrid temperature-responsive hydroxyapatite–poly(N-isopropylacrylamide) (HAP–PNIPAAm) gel has been synthesized by the interpenetration of PNIPAAm into a sintered HAP disk through a radical-initiated polymerization of NIPAAm monomers under N2 atmosphere, and shows sustained positive thermo-responsive drug release profile over a month at PBS buffer.