Plasticizing effect of ionic liquid on cellulose acetate obtained by melt processing

Amine Bendaoud (1) , Yvan Chalamet (1)

1 IMP - Ingénierie des Matériaux Polymères

Cellulose acetate (CA) plasticized by 1-butyl-3-methylimidazolium chloride (BMIMCl) and with diethylphtalate (DEP) was obtained by melt processing at 150 degrees C. The effect and the interaction of ionic liquid with the cellulose acetate and their influence on structural, thermo-mechanical, rheological and tensile properties of CA materials were investigated.Ionic liquid (BMIMCl) has shown a good plasticization and more efficient destruction of the crystalline structure of cellulose acetate than the DEP plasticized CA. BMIMCl interacts intensively with CA molecules due to the pronounced van der Waals interactions, hydrogen bonding and electrostatic nature of ionic liquid. The tensile test and the low Young's modulus for plasticized CA suggest a strong reduction of the interaction between the CA chains due to the presence of the ionic liquid.

Mots clés: Cellulose acetate; Ionic liquid; Plasticizers; Extrusion; Thermo-mechanical properties; Relaxations

Domaines: Polymères; Matériaux

Amine Bendaoud, Yvan Chalamet. Plasticizing effect of ionic liquid on cellulose acetate obtained by melt processing. Carbohydrate Polymers, 2014, 108, pp.75-82. ⟨10.1016/j.carbpol.2014.03.023⟩. ⟨hal-01087935⟩