This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Orr, R. S. Articles by Grant, J. N. Search for Related Content Social Bookmarking                   What's this?

Density of Modified Cottons Determined with a Gradient Column

Southern Regional Research Laboratory,1 New Orleans, Louisiana

Louis C. Weiss

Southern Regional Research Laboratory,1 New Orleans, Louisiana

Harry B. Moore

Southern Regional Research Laboratory,1 New Orleans, Louisiana

James N. Grant

Southern Regional Research Laboratory,1 New Orleans, Louisiana

A rapid method which compares favorably in accuracy with that of slower methods for measuring the density of cellulosic materials with a gradient column is described. Densities of several cottons before and after chemical modification by partial acetylation, carboxymethylation, aminization, and mercerization are given. Per cent acetyl can be expressed as a function of density in a linear empirical equation over a range of 13 to 42% acetyl with a precision of ± 2%. Density measurements of decrystallized, ball-mill ground, and acid hydrolyzed cottons were in agreement with the generally accepted con cept of the crystalline-amorphous cellulose phase composition in these materials. Cotton from which water was removed by solvent exchange was found to have a high density before, and a low density after, air drying.

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				R. S. Orr, A. W. Burgis, L. B. DeLuca, and J. N. Grant The Role of Spiral Structure in Untreated and Treated Cottons Textile Research Journal, April 1, 1961; 31(4): 302 - 310. [Abstract] [PDF]

				F. S. Perkerson, W. A. Reeves, and V. W. Tripp Some Studies on the Cross-Linking of Cotton Cellulose: Part I: Chemical and Physical Aspects Textile Research Journal, December 1, 1960; 30(12): 944 - 954. [Abstract] [PDF]

				W.B. Achwal and G.M. Nabar Action of Oxidizing Agents on Cellulose and Hydrocellulose Textile Research Journal, November 1, 1960; 30(11): 872 - 881. [Abstract] [PDF]

				J. C. Arthur JR and R. J. Demint Properties of Cotton Containing Radiation- Polymerized Acrylonitrile Textile Research Journal, July 1, 1960; 30(7): 505 - 509. [PDF]

				C. M. Conrad, D.J. Stanonis, P. Harbrink, and J.J. Creely Changes in Fine Structure and Mechanical Properties Induced by Cyanoethylation of Cotton Yarns: Part I: Treated Without Tension Textile Research Journal, May 1, 1960; 30(5): 339 - 348. [Abstract] [PDF]

				R. S. Orr, A. W. Burgis, J. J. Creely, T. Mares, and J. N. Grant Part II: Effects of Strains During Swelling, Washing, and Drying Textile Research Journal, April 1, 1959; 29(4): 355 - 363. [Abstract] [PDF]

				V. W. Tripp, R. Giuffria, and I. V. deGruy Microscopical Observations on Partially Acetylated Cottons and Related Fibers Textile Research Journal, January 1, 1957; 27(1): 14 - 24. [Abstract] [PDF]

				E. H. Nott and J. N. Grant Physical Properties of Cotton Reacted with Beta-Propiolactone Textile Research Journal, September 1, 1956; 26(9): 673 - 680. [Abstract] [PDF]

				A. W. McDonald, G. Couturier Humphreys, O. M. Kromhout, and J. N. Grant Physical Properties of Chemically Modified Cottons: Part I: Properties of the Untreated Cottons Textile Research Journal, August 1, 1956; 26(8): 641 - 646. [Abstract] [PDF]

				A. W. McDonald, G. C. Humphreys, R. S. Orr, and J. N. Grant Physical Properties of Chemically Modified Cottons: Part II: Effects of Partial Acetylation Textile Research Journal, August 1, 1956; 26(8): 646 - 652. [Abstract] [PDF]

				E. Honold, R. E. Boucher, and E. L. Skau The Effect of Partial Acetylation on the Pore-Size Distribution of Cotton Fabrics Textile Research Journal, April 1, 1956; 26(4): 263 - 271. [PDF]

				J. N. Grant Certain Physical Properties of Selected Samples of Chemically Modified Cottons 1 Textile Research Journal, January 1, 1956; 26(1): 74 - 80. [Abstract] [PDF]