Properties and Reinforcing Mechanism of Cellulose Reinforced Polyvinyl Alcohol Hydrogel Membranes

Abstract

The novel cellulose reinforced Polyvinyl Alcohol (PVA) composite hydrogel membranes were prepared by means of immersion-precipitation phase transformation, taking the ionic liquid, 1-butyl-3-methylimidazolium acetate ([Amim] + Cl -) as solvent.The prepared hydrogels were characterized by Fourier transform infrared spectrum (FT-IR), X-ray diffraction measurements (XRD) and Scanning electron microscopy (SEM).The results revealed that a novel compact dual-network structure was formed between the cross-linked cellulose network and PVA, the formed of aggregate sheets by the hydrophobic action of cellulose will also be physical cross-linking network junctions besides the hydrogen bonds interactions in the hydrogel, and this is also one of the other reinforce factors to the PVA hydrogel.It is believed that this is an effective manner to reinforce PVA hydrogel materials.