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.
structure and properties of oxycellluloses before and after beating using x-ray diffraciton
Research Article
DOI:
xxx-xxx-xxx
Subject:
science
KeyWords:
oxycellulose, linters, beating, Xray diffraction
Abstract: