Effect of Urea on Wrinkle Recovery Properties of Wool

Pittman, Allen G.; Morgan, Jason Phipps; Pardo, C.E.

doi:10.1177/004051758105100510

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The treatment of wool fabric with an aqueous solution of urea deserves specific comment. In an earlier study by Pittman et al [31 ], the deposition of 12-15 weight % urea within wool fibers resulted in improved wrinkle recovery when measured by the multiple pleat test [1,19]. In the present study, using the IWS Thermobench method to examine wrinkle recovery, the fabrics had significantly poorer wrinkle recovery than control samples.…”

Section: Resultsmentioning

confidence: 42%

Water Transport and Wrinkle Recovery of Wool

Menefee¹,

Pittman²,

Landwehr³

et al. 1982

Textile Research Journal

View full text Add to dashboard Cite

A "ratchet" mechanism is discussed for the formation and recovery of wrinkles in wool fabric. During the wrinkling stage, in which local temperature and humidity are raised, stress relaxation rates are increased by the lowering of the glass transition temperature by plasticization with water, by the ambient increase in temperature, and by additional heating caused by a positive heat of sorption. During recovery, the temperature and relative humidity decrease, giving a greatly reduced relaxation rate that delays wrinkle recovery. On the assumption that wrinkle behavior can be improved by reducing the rate of water transport, measurements were made of the water desorption rate from a fabric taken from 86% to 65% RH. Fabrics were treated with phenyl isocyanate, urea, acetic anhydride, esterification with methanol, potassium dichromate, and mercuric acetate. Although a part of the altered wrinkle behavior may be due to changes in equilibrium water content, the data suggest that slowing the desorption rate is a primary factor in improving wrinkle recovery.

show abstract

Section: Resultsmentioning

confidence: 42%