Chemical Safety Science, 2017, Volume 1, No 2, p. 227 — 232

 

Utilization and biodegradation of wastes

UDC 54.057                                                                                      Download PDF (Rus)

DOI: 10.25514/CHS.2017.2.10997

 

PREPARATION OF ION-EXCHANGE MATERIAL USING CHEMICAL MODIFICATION OF POLYPROPYLENE WASTE

M. V. Bazunova, R. A. Mustakimov*, and F. R. Gimayeva

Federal State Budget Educational Institution of Higher Education Bashkir State University, Ufa, Russia

Received October 19, 2017

Published December 25, 2017

Abstract – A method for preparing a cation-exchange material based on recycled polypropylene by preliminary oxidation of recycled polypropylene (RPP) and subsequent grafting of polyacrylic acid has been developed. The resulting values of static exchange capacity (SEC) of modified samples with grafted chains varied within the range of 1.4-2.0 meq/g. Additional method for modifying polypropylene waste was suggested, which involved sulphurization of both unmodified RPP samples and RPP samples modified by preliminary oxidation. The pre-oxidized samples were sulfonated to a greater extent and characterized by higher SEC values.

Keywords: polymerization, polypropylene, ion-exchange materials, waste modification, recycled polypropylene.