PRODUÇÃO DE RESINA TROCADORA DE ÍONS A PARTIR DE POLIETILENO RETICULADO

Camila Figueiredo de Castro; Luz Consuelo Gonzalez Alonso Panzarini; Maggiory Simões Ferrara; Marcela Pelegrino Marques; Maria Fernanda Ferraz de Almeida; Tarsilia Matos Machado; Yuli Silvino Capelle

doi:10.18540/jcecvl3iss2pp071-081

Authors

Camila Figueiredo de Castro FEI University
Luz Consuelo Gonzalez Alonso Panzarini FEI University
Maggiory Simões Ferrara FEI University
Marcela Pelegrino Marques FEI University
Maria Fernanda Ferraz de Almeida FEI University
Tarsilia Matos Machado FEI University
Yuli Silvino Capelle FEI University

DOI:

https://doi.org/10.18540/jcecvl3iss2pp071-081

Keywords:

Crosslinked polyethylene, PEX, Sulfonation, Ion-exchange resin

Abstract

Among thermoset polymers on the market, there is a crosslinked polyethylene (PEX), which is used for high voltage cable encapsulation. A large amount of waste is generate and disposed in this process, causing burden of production and environmental hazards. Thus, this project has proposed PEX chemical modification by sulfonation reactions, which consists in the insertion of SO3H groups in its structure. The Influences of the microwaves pre-irradiation, time of reaction and concentration of free SO₃ in sulfuric acid were studied by FTIR-ATR, DRX and ICP. As a result, PEX-SO₃H presented to be a strong cationic resin. The best results were that obtained in 30-minute reaction and sulfonic acid with 65% of free SO₃. The microwave pre-irradiation was not effectiveness in this process. The PEX-SO₃H obtained in this work shows at about 97% of efficiency in remove Ca²⁺ from water, which proves it can be used on water treatment. Although cost-benefit analysis was not satisfactory, this study expands new possibilities for thermoset recycling.