PAZOURKOVÁ Lenka VSB - Technical University of Ostrava

Montmorillonite and Vermiculite modified by N-vinylcaprolactam and Poly(N-vinylcaprolactam) Preparation and Characterization


The N-vinylcaprolactam, NVCL, is a monomer with amphiphilic character. Poly(N-vinylcaprolactam), PNVCL, is a non-ionic, water soluble polymer from the poly N-vinylamide group, which has potential use in biological applications. Vermiculite and montmorillonite are naturally occurring clay minerals widely used as nanofillers for polymers. In this study, vermiculite and montmorillonite were modified by NVCL and PNVCL for subsequent use as nanofiller into the poly(N-vinylcaploactam). Amount of monomer or polymer added to the clay mineral was based on cation exchange capacity (CEC) of the each clay. The process of modification was held in ethanol. From the FTIR spectra can be assumed that clay minerals are successfully modified by NVCL and PNVCL. The samples were compared after their modification of NVCL and PNVCL. The samples were characterized by Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy. ACKNOWLEDGEMENTS: This work was supported by the “Organo-anorganic nanocomposites based on layered silicates” project (No. SP2014/82) and “IT4 Innovations Centre of Excellence project” (No.CZ1.05/1.1.00/02.0070)