Double stimuli-responsive cellulose nanocrystals reinforced electrospun PHBV composites membrane for intelligent drug release

Int J Biol Macromol. 2020 Jul 15:155:330-339. doi: 10.1016/j.ijbiomac.2020.03.216. Epub 2020 Mar 27.

Abstract

Double stimuli-responsive functionalized cellulose nanocrystal-poly[2-(dimethylamino)ethyl methacrylate] (CNC-g-PDMAEMA) reinforced poly(3-hydroxybutyrate-co-3-hydroxy valerate) (PHBV) electrospun composite membranes were explored as drug delivery vehicles using tetracycline hydrochloride (TH) as a model drug. It was found that rigid CNC-g-PDMAEMA nanoparticles enhanced thermal, crystallization and hydrophilic properties of PHBV. Moreover, great improvements in fiber diameter uniformity, crystallization ability and maximum decomposition temperature (Tmax) could be achieved at 6 wt% CNC-g-PDMAEMA. Furthermore, by introducing stimuli-responsive CNC-g-PDMAEMA nanofillers, intelligent and long-term sustained release behavior of composite membranes could be achieved. The releasing mechanism of composite membranes based on zero order, first order, Higuchi and Korsmeyere-Peppas mathematical models was clearly demonstrated, giving effective technical guidance for practical drug delivery systems.

Keywords: Cellulose nanocrystals; Drug release; Electrospinning; Nanofiber membrane.

MeSH terms

  • Cellulose / chemistry*
  • Crystallization
  • Drug Liberation*
  • Hydrophobic and Hydrophilic Interactions
  • Membranes / chemistry
  • Methacrylates / chemistry*
  • Models, Theoretical
  • Nanocomposites / chemistry*
  • Nanoparticles / chemistry*
  • Nylons / chemistry*
  • Temperature

Substances

  • Methacrylates
  • Nylons
  • poly(2-(dimethylamino)ethyl methacrylate)
  • Cellulose