In situ synthesis of ferrites in lignocellulosics

In situ synthesis of iron oxide particles in O-(carboxymethyl)ated cellulose fibers and sulfonated wood fibers was performed by careful oxidation of ferrous hydroxide precipitated by alkali from the ferrous ion-exchange form of the matrix. This “biomimetic” chemistry yielded magnetic fibers containi...

Full description

Saved in:
Bibliographic Details
Published in:Carbohydrate research 1992-02, Vol.224, p.133-139
Main Authors: Marchessault, Robert H., Ricard, Serge, Rioux, Patrice
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
fibers
Forms of application and semi-finished materials
iron oxides
lignocellulose
magnetic fibers
magnetic properties
Polymer industry, paints, wood
synthesis
Technology of polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In situ synthesis of iron oxide particles in O-(carboxymethyl)ated cellulose fibers and sulfonated wood fibers was performed by careful oxidation of ferrous hydroxide precipitated by alkali from the ferrous ion-exchange form of the matrix. This “biomimetic” chemistry yielded magnetic fibers containing small ferrite (Fe 3O 4) particles of ∼ 10 nm in size. Magnetic hysteresis-loop measurements showed that the material, in the form of a thin parchment-like film, is superparamagnetic, that is, it possesses no remanent magnetization. The process described herein could be practiced with a wide range of natural biopolymers in order to obtain magnetically responsive materials suitable for such biotechnological applications as magnetic separations.
ISSN:0008-6215
1873-426X
DOI:10.1016/0008-6215(92)84100-7