Cotton Linter Crystallinity Variations Caused by Electron Beam Irradiation and Acid Treatment

Hee Jung Park; Ha Neul Sohn; Yung Bum Seo

doi:10.7584/ktappi.2014.46.4.037

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2014 Vol.46, Issue 4 Preview Page Next Page

Cotton Linter Crystallinity Variations Caused by Electron Beam Irradiation and Acid Treatment 물리화학적 처리에 의한 린터의 결정성 변화에 관한 연구

30 August 2014. pp. 37-43

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Abstract

The crystallinity and molecular weight of cotton linter need to be controlled to be more easily dissolved in NMMO during manufacture of clothing fabrics. Electron beam irradiation and sulfuric acid treatment were used as pre-treatment to reduce molecular weight of cotton linter more efficiently, and after the pre-treatment, peroxide bleaching was followed in alkaline condition. After those processes, the crystalline indices of the cotton linters were measured by XRD method, and other properties such as their alpha cellulose contents and degree of polymerization were measured. It was found that the crystallinity index of cotton linter was decreased as the irradiation of electron beam increased while increased as the dose of sulfuric acid increased. These results strongly suggested that electron beam damaged the crystalline structure of the cellulose directly while sulfuric acid dissolved mostly non-crystalline area of the cellulose structure.

Keywords

Cellulose crystallinity

electron beam irradiation

sulfuric acid

alpha cellulose

degree of polymerization

cotton linter

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 46
No :4
Pages :37-43
Received Date : 2014-08-12
Revised Date : 2014-08-18
Accepted Date : 2014-08-20
DOI :https://doi.org/10.7584/ktappi.2014.46.4.037

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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