Sage Journals: Discover world-class research

Abstract

Cotton fabrics were partially methylated by several methods and cross-linked with a commercial finishing agent. Methylation with diazomethane to a degree of substitution (DS) of 0.25 or higher enhanced fabric tensile strength, tear strength, and resistance to flex abrasion, compared with nonmethylated fabrics with comparable crease recovery angles. X-Ray diffraction studies showed that almost no decrystallization of cotton accompanied methylation with diazomethane, but that appreciable decrystallization accompanied methylation with other agents or alkylation with larger alkyl groups. The improved fabric properties resulting from treatment with diazomethane apparently require the preservation of crystallinity in the cotton as well as the deposition of polymethylene deep within the fibers. Methylation with dimethyl sulfate or methyl chloride did not enhance fabric properties, nor did substitution with ethyl, allyl, isopropyl, or benzyl groups

Keywords

Cotton Fabrics Mechanical Properties Chemically Modified Cotton Diazomethane DHDMEU Polyethylene Alkylation Methylation Ethylation Crosslinking Diazo Compounds Reactants Swelling Laundering Breaking Strength Tear Strength Abrasion Resistance Stoll QM Abrasion Testing X-Ray Diffraction Crystallization Fine Structure (Fibers)Wrinkle Recovery Wet Wrinkle Recovery Dry Wrinkle Recovery Regain

Get full access to this article

View all access options for this article.

References

Blatt

A. H.

, Ed., “Organic Syntheses,” Collective Vol. II, John Wiley & Sons, New York, 1943, pp. 165–67.

Frick

J. G.

Kullman

R. M. H.

Reinhardt

R. M.

, Modification of Cross-linking Effects in Cotton Fabrics by Swelling and Methylation, J. Appl. Polymer Sci. 9, 2311–2318 (1965).

Haworth

Roberts

J. G.

Robinson

R. N.

, The Effects of Chemical and Physical Modification of Cotton on Cross-Linking, Textilveredlung 2, 361–366 (1967).

Head

, Action of Diazomethane on Cotton and Various Modified Cotton Celluloses, J. Textile Inst. 43, T1–T23 (1952).

Jeffries

Roberts

J. G.

Robinson

R. N.

, Accessibility and Reaction Sites in Cotton, Textile Res. J. 38, 234–244 (1968).

Karrholm

E. M.

Asnes

, Setting Cotton Fabric without Covalent Cross-Links, Textile Res. J. 34, 220–235 (1964).

Klein

Stanonis

D. J.

Harbrink

Berni

R. J.

, The Preparation and Properties of Partially Benzylated Cotton, Textile Res. J. 28, 659–668 (1958).

Kullman

R. M. H.

Frick

J. G.

Reinhardt

R. M.

Reid

J. D.

, Cross-Linking Etherified Cottons with Dimethylol Ethyleneurea, Textile Res. J. 31, 877–885 (1961).

Munzel

Schenkel

Krassig

H. A.

, Influence of Reactive and Nonreactive Substituents on the Achievement of Dry and Wet Crease Recovery in Resin-Finished Cotton Fabrics, Textile Res. J. 36, 230–238 (1966).

10.

Reeves

R. E.

Thompson

H. J.

, Methylation of Cotton Fiber with Ethereal Diazomethane, Contrib. Boyce Thompson Inst. 11, 55 (1939).

11.

Savage

A. B.

Young

A. E.

Maasberg

A. T.

, Ethers, in “Cellulose and Cellulose Derivatives,” Part II, 2nd ed., Ott

Spurlin

H. M.

Graffin

M. W.

, Eds., Interscience, New York, 1954, pp. 882–958.

12.

Segal

Conrad

C. M.

, Characterization of Cellulose Derivatives by Means of the X-Ray Diffractometer, Am. Dyestuff Reptr. 46, 637–642 (1957).

13.

Sitch

D. A.

, Methylation of Cellulose with Diazomethane and Some Properties of the Products, J. Textile Inst. 44, T407–T419 (1953).

14.

Spedding

Warwicker

J. O.

, Effect of Chemical Reagents on the Fine Structure of Cellulose. I. Action of Diazomethane, J. Polymer Sci. Part A2, 3933–3950 (1964).

15.

Timell

, “Studies on Cellulose Reactions,” Stockholm, Esselte Akt., 1950.

16.

Wolfram

L. J.

Speakman

J. B.

, Formation of Polymers on Wool. I. Polymethylene, J. Soc. Dyers Colourists 78, 407–411 (1962).

Properties of Partially Methylated Cotton Fabrics

Abstract

Keywords

Get full access to this article

References