Abstract
Poly(N-isopropylacrylamide) (PNIPAAm)/calcium phosphate (CaP) hybrid nanocomposites with dual-responsive controlled drug delivery property have been prepared by in-situ biomineralization process. Poly(acrylic acid) (PAA) is used as a crystal growth additive to control the morphology of the hybrid nanocomposites. The interaction between PAA and Ca2+ contributes to the formation of homogeneous and robust nanocomposites. Vitamin B2 release behavior is found to be pH- and thermal-responsive. Additionally, the release profiles are sustained with the introduction of CaP, indicating that CaP nanocrystallines could decrease the permeation of the encapsulated drug effectively. The results suggest that the prepared hybrid nanocomposites can be used as “smart” nanoscale materials for sustained dual-responsive drug delivery.
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