Synthesis and study of sorption properties of polyvinyl alcohol (PVA)-based hybrid materials

Julien Muller (1) , Benedicte Prelot (1) , Jerzy Zajac (1) , Sophie Monge (1)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier

The present contribution aims at reporting the synthesis and the preliminary evaluation of hybrid materialscombining polyvinyl alcohol (PVA) functionalized with ethylenediaminetetraacetic acid (EDTA) as complexinggroups, and alumina that, together, were able to efficiently complex and remove metallic cations from aqueouseffluents. For such purpose, well-defined PVA homopolymers bearing an azide (PVA-eN3) or an alkyne function(PVA-alkyne) were functionalized via chemical modification by either phosphoric acid (PPVA-N3), to promoteadhesion to alumina, or ethylenediaminetetraacetic acid (PVA(EDTA)-alkyne), able to efficiently complex metalliccations. Modified PVA chains were coupled by Huisgen reaction using copper catalysis (CuAAC) leading tothe formation of bifunctional diblock copolymers. Then, hybrid materials were produced via the grafting of PVAbasedcopolymers onto alumina particles. Finally, the sorption capacity of these materials towards Co(II), Ni(II)and Sr(II) was determined to evaluate their removal efficiency. Such hybrid materials could be efficiently used inthe context of nuclear effluents treatment.

Mots clés: functionalized polyvinyl alcohol; hybrid materials; water treatment

Domaines: Polymères

Julien Muller, Benedicte Prelot, Jerzy Zajac, Sophie Monge. Synthesis and study of sorption properties of polyvinyl alcohol (PVA)-based hybrid materials. Reactive and Functional Polymers, 2019, 144, pp.104364. ⟨10.1016/j.reactfunctpolym.2019.104364⟩. ⟨hal-02314890⟩