Luster and Cotton

Correlation of Subjective Carpet Luster with Specular Reflectance

“…The loss of luster on turning of the sample supports internal reflection along the fiber axes. Literature sources [ 1,4,8] confirm that the major source of luster is reflection along the fiber axis. The relative brightness of the sparkle observed on carpet fibers was caused by the total reflection of the light by a mechanism similar to that observed with totally reflecting prisms [6].…”

Studies on Luster in Textiles

“…From these a priori considerations, the cross-sectional shape of the fibers, .the shape continuity, the number of convolutions and their regularity, the ribbon width, and the fiber surface smoothness have all been pointed out by the earlier workers [ 1,6,4] as the likely causes affecting the luster behavior of cotton fibers. I Luster in relation to circularity.…”

“…, & d q u o ;On the other hand,Buck and McCord[4] have pointed out that the specularly ref~ected light does not exceed more than 4 to 8% of the incident light although this amount may have considerable reinforcement from the light refracted into the 'fiber and then internally reflected. Barratt[2] has further shown that mercerization increases the transparency , of the fibers and, hence, the amount of light refracted into the fiber may be even more.…”

The Application of Grease-Resistant Finishes to Cotton

“…6 gives superior results, while No. 10 shows some promise, although the crease recovery imparted is not outstanding.…”

“…The results obtained show a considerable drop in both tensile and tear strengths on resin treatment which would appear difficult to reconcile with the numerous claims in recent years that creaseresistant cottons could be produced without serious loss of strength. The importance of fabric construction has been pointed out in several discussions on the crease-resisting of cellulosic fabrics [5,6,10], and a number of fabrics of varied construction have therefore been examined to assess the significance of this point. A range of commercially available fabrics were scoured to remove the normal nondurable finish and were each treated with the same series of resin formulations, one of which contained an addition of polyvinyl alcohol since it was thought that this additive might be of advantage on some fabric constructions only.…”