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

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

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°C hot plate was shown as an optimum condition to manufacture the holocellulose regenerated film.

Original languageEnglish
Pages (from-to)89-97
Number of pages9
JournalPalpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry
Volume47
Issue number6
DOIs
StatePublished - Dec 2015

Keywords

  • Dissolution
  • Film
  • Holocellulose
  • LiBr
  • Miscanthus sinensis

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