Characteristics and Potential Applications of Cellulose Acetate

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  • 酢酸セルロースの特徴と新展開
  • サクサン セルロース ノ トクチョウ ト シン テンカイ

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The acetylation of cellulose followed by the partial deacetylation leads to the solvent-soluble cellulose acetates, which have been widely used in various industrial fields including, inter alia, membrane separation, photo film, liquid crystal display, and, textile and other fibers. In this article, we focus on the remarkable surface properties of cellulose acetates. In this context, the recent development of cellulose acetate-based hollow fiber membrane for drinking water treatment is reviewed ; owing to its outstanding negative ζ potential, the cellulose acetate membrane is more resistant than other-polymer-based membranes to the fouling problem by the suspended solids in surface water which are negatively charged in general.<BR>In light of the theory for interfacial forces in macroscopic systems developed by van Oss et al., characteristics of cellulose acetates are also discussed in this article ; cellulose acetates are characterized by their high electron acceptability, which could be an origin for affinity towards electron donors such as metals and carbons, suggesting that the cellulose acetates are inherently suitable for the binder for the production of electrodes of rechargeable lithium ion battery and other electrical storage devices.<BR>In an effort to verify the affinity between cellulose acetates and carbon materials, composite films of cellulose acetate and multi-walled carbon nanotube (MWNT) were prepared. The composite films from cellulose acetates exhibit high electrical conductivity than other polymer based composite films, revealing that MWNT is highly dispersed in cellulose acetate matrix presumably because of the electron acceptor-donor interaction (Lewis acid-base interaction). We are ready to offer samples of non-conventional water-soluble grades of cellulose acetate as well as conventional solvent-soluble grades for potential applications as such.

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 68 (9), 1018-1024, 2014

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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