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Purification of 6-Carboxy Cellulose Solution by Membrane Separation Processes
Authors: Šmídová Dagmar | Havelka Pavel | Víšek Luboš | Mikulášek Petr
Year: 2006
Type of publication: ostatní - přednáška nebo poster
Name of source: Proceedings of 33rd International Conference of Slovak Society of Chemical Engineering
Publisher name: Slovak Society of Chemical Engineering
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Titles:
Language Name Abstract Keywords
cze Purification of 6-Carboxy Cellulose Solution by Membrane Separation Processes Oxidized cellulose is known mainly as biocompatible and bioresorbable polymer with no adverse reaction to the body. Application properties of oxidized cellulose depend on many factors, e.g. degree of polymerization, carboxyl content, cellulose structure used for oxidation, and finally on its further chemical and physical modifications. Raw oxidized cellulose consists of molecules with a broad spectrum of molecular weights. Fractionation of the raw chemical according to molar weight/size makes physical properties better defined and allows improvement of product quality. That brings a new value for the products especially in the field of medical, pharma and food applications Fractionation of sodium salt of 6-carboxy cellulose solution by ultrafiltration and microfiltration has been studied. Technology of cellulose oxidation, experimental ultrafiltration and microfiltration apparatus and results of the experiments are presented. It is shown that ultrafiltration and microfiltration are suitable separation processes for kind of solution. membránová separace;celulóza;čištění
eng Purification of 6-Carboxy Cellulose Solution by Membrane Separation Processes Oxidized cellulose is known mainly as biocompatible and bioresorbable polymer with no adverse reaction to the body. Application properties of oxidized cellulose depend on many factors, e.g. degree of polymerization, carboxyl content, cellulose structure used for oxidation, and finally on its further chemical and physical modifications. Raw oxidized cellulose consists of molecules with a broad spectrum of molecular weights. Fractionation of the raw chemical according to molar weight/size makes physical properties better defined and allows improvement of product quality. That brings a new value for the products especially in the field of medical, pharma and food applications Fractionation of sodium salt of 6-carboxy cellulose solution by ultrafiltration and microfiltration has been studied. Technology of cellulose oxidation, experimental ultrafiltration and microfiltration apparatus and results of the experiments are presented. It is shown that ultrafiltration and microfiltration are suitable separation processes for kind of solution. membrane separation;purification;cellulose

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