Preparation of copper-chelate quaternized carboxymethyl chitosan/organic rectorite nanocomposites for algae inhibition

Carbohydr Polym. 2016 Oct 20:151:130-134. doi: 10.1016/j.carbpol.2016.05.045. Epub 2016 May 18.

Abstract

Quaternized carboxymethyl chitosan/organic rectorite (QCMC/OREC) nanocomposites were rapidly prepared by intercalating QCMC into the layer of OREC under microwave irradiation. And then copper-chelate QCMC/OREC (QCMC/OREC-Cu) nanocomposites were obtained by mixing QCMC/OREC with CuSO4 solution. XRD and TEM results indicated that QCMC/OREC nanocomposites were obtained and QCMC was dispersed in the interlayer of OREC. Besides, FT-IR results revealed that the hydrogen bonds and electrostatic interaction in QCMC/OREC-Cu were both stronger than those in QCMC/OREC because of introducing the Cu(2+). The thermogravimetric analysis showed that the thermal stability of QCMC/OREC-Cu nanocomposites was higher than QCMC and QCMC/OREC. Algae inhibition assay revealed that QCMC/OREC-Cu nanocomposites had stronger antifouling activity than original QCMC and QCMC/OREC. This work provides important basis for developing novel antifouling materials.

Keywords: Algae inhibition; Copper; Organic rectorite; Quaternized carboxymethyl chitosan.

MeSH terms

  • Aluminum Silicates* / administration & dosage
  • Aluminum Silicates* / chemistry
  • Chitosan / administration & dosage
  • Chitosan / analogs & derivatives*
  • Chitosan / chemistry
  • Chlorophyll / metabolism
  • Chlorophyll A
  • Copper* / administration & dosage
  • Copper* / chemistry
  • Diatoms / drug effects
  • Diatoms / growth & development
  • Diatoms / metabolism
  • Disinfectants* / administration & dosage
  • Disinfectants* / chemistry
  • Minerals* / administration & dosage
  • Minerals* / chemistry
  • Nanocomposites* / administration & dosage
  • Nanocomposites* / chemistry

Substances

  • Aluminum Silicates
  • Disinfectants
  • Minerals
  • carboxymethyl-chitosan
  • rectorite
  • Chlorophyll
  • Copper
  • Chitosan
  • Chlorophyll A