Publication detail

Structure and properties of oxycelluloses before and after beating using X-ray diffraction

Authors: Filipi Michaela | Milichovský Miloslav

Year: 2015

Type of publication: článek v odborném periodiku

Name of source: International Journal of Recent Scientific

Page from-to: 5917-5921

Titles:

Language	Name	Abstract	Keywords
cze	Struktura a vlastnosti oxycelulózy před a po mletí použitím X-ray difrakce	Práce se zabývá strukturou a změnou struktury celulózových materiálů před mletím a po mletí. Pro určení změny struktury oxycelulózy byla použita metody X ray difrakce.	oxycelulóza; lintry; mletí; X ray difrakce
eng	Structure and properties of oxycelluloses before and after beating using X-ray diffraction	Oxidized celluloses belong to a very interesting class of cellulose derivatives with unique chemical and mechanical influence on supermolecular structure of cellulose significantly different from those of unmodified cellulose. Oxidative-hydrolysis process taking place during oxycellulose preparation has a qualitative influence upon crystalline domains of cellulose. Primary cellulose I is changed during oxycellulose preparation to more amphoteric polymorph cellulose II being change further by beating to polymorphs II and IVII in the case of intensively oxidized cellulose (15 % and 19 % of COOH groups) and to polymorph IVI for carefully oxidation of bleached linters (3.5 % of COOH groups). In contrast to oxycellulose, intensively fibrillation beating of native cellulose leads only to increase of amount the crystalline domains in cellulose.	oxycellulose; linters; beating; X-ray diffraction

Search