Study of preparation and properties of ionic liquid/chitosan composite membrane
CAI Li-fang
HE Ling-hao
SONG Rui
Abstract：The ionic liquid/chitosan composite membrane was prepared by solution casting.Structure,mor-phology and mechanical properties of the composites were analyzed by FT-IR,AFM and DMA.The results showed that there existed significant physical interactions such as hydrogen bond between the ionic liquid and chitosan.There was a great impact on the crystal morphology of the chitosan with the addition of ionic liquids.The pure chitosan looked like slender needle with good distribution and its surface was flat.Where-as the spherulites particles were observed and the particle size increased firstly,then decreased.When adding content was 20%,the particle size was the largest,and corresponding surface roughness was 267 .74 nm;the storage modulus of composite membrane achieved maximum,about 1 .5 times than that of the pure chitosan film.But with the addition of ionic liquids,there was no obvious change of chitosan mem-brane glass transition temperature.
Keywords：chitosanionic liquidcomposite membranedynamic mechanical property
Publication Date：2014-11-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 39-42 )