Dissolution Characteristics and Regenerated Miscanthus Sinensis Holocellulose Film Prepared by Dissolving the LiBr Solution

Ji-Wook Yang; Gu-Joong Kwon; Kyo-Jung Hwang; Won-Jung Hwang; Jae-Hyun Hwang; Dae-Young Kim

doi:10.7584/ktappi.2015.47.6.089

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Dissolution Characteristics and Regenerated Miscanthus Sinensis Holocellulose Film Prepared by Dissolving the LiBr Solution LiBr 수용액으로 용해시켜 제조한 거대억새 홀로셀룰로오스 용해 및 재생 필름특성

30 December 2015. pp. 89-97

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Abstract

In this study, dissolution characteristics of 60% LiBr aqueous solution for Miscanthus sinensis holocellulose in accordance with heating time and characteristics of regenerated films were analyzed. Miscanthus sinensis holocellulose was made by peracetic acid method. During the dissolution of 60% LiBr solution for the holocellulose, the dissolution was started from the tip of the cellulose fiber after about 7 minutes, and proceeded as it swollen like a balloon. A lot of Si was identified by analyzing hollocellulose regenerated film through SEM/EDS. Cross section of regenerated film as dissolution time till 40 minutes of dissolution showed multilayered structure and fiber orientation. But after 40 minutes, multilayered structure and fiber orientation was not observed. The crystal structure of the holecellulose was transformed cellulose I into cellulose II. Therefore, dissolution for 20 minutes with 60% LiBr solution in the condition of 190℃ hot plate was shown as an optimum condition to manufacture the holocellulose regenerated film.

Keywords

Miscanthus sinensis

LiBr

dissolution

holocellulose

film

References

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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 : 47
No :6
Pages :89-97
Received Date : 2015-11-09
Revised Date : 2015-12-11
Accepted Date : 2015-12-13
DOI :https://doi.org/10.7584/ktappi.2015.47.6.089

Journal of Korea TAPPIISSN:0253-3200(Print)한국펄프종이공학회

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