Advanced Search

Journal Navigation

Journal Home

Subscriptions

Archive

Contact Us

Table of Contents

Sign In to gain access to subscriptions and/or personal tools.
Textile Research Journal
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to Saved Citations
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Request Reprints
Right arrow Add to My Marked Citations
Citing Articles
Right arrow Citing Articles via Google Scholar
Right arrow Citing Articles via Scopus
Google Scholar
Right arrow Articles by Yatsu, L.Y.
Right arrow Articles by Benerito, R.R.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati   Add to Twitter  
What's this?

Conversion of Cellulose I to Stable Cellulose III

L.Y. Yatsu

USDA, ARS, Southern Regional Research Center, New Orleans, Louisiana 70179, U.S.A.

T.A. Calamari, JR

USDA, ARS, Southern Regional Research Center, New Orleans, Louisiana 70179, U.S.A.

R.R. Benerito

USDA, ARS, Southern Regional Research Center, New Orleans, Louisiana 70179, U.S.A.

Cotton cellulose in fiber, yarn, or fabric form was converted from cellulose I to the cellulose III polymorph. Excellent conversion to III was obtained by immersing cotton (cellulose I) in liquid ammonia at room temperature, subjecting it to pressures from 689.5 to 11,721.5 kPa (100 to 1700 psi) while saturated with ammonia, and de-gassing the ammonia at either room temperature or elevated (about 140°C) temperatures. De-gassing at either temperature was equally effective. Complete conversion to III was obtained when cotton fibers from a never-dried cotton boll were dried with dime thoxypropane, treated with liquid ammonia at 140°C and at 11,721.5 kPa, and dried at or above the critical temperature (132.5°C). Crystalline cellulose III obtained under high pressures was stable to boiling water. After several hours in boiling water, there was only a slight indication of its conversion to IV. Complete conversion of III to IV was obtained by first subjecting III to anhydrous ethylenediamine and then to the aprotic polar solvent, dimethylformamide.

Textile Research Journal, Vol. 56, No. 7, 419-424 (1986)
DOI: 10.1177/004051758605600704
Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati   Add to Twitter Twitter    What's this?