The Corona Treatment of Cotton

Abstract

The effect of various corona treatments of cotton card sliver on yarn and fabric properties and on spinning performance has been investigated. The corona increased yarn strength, especially at low twist levels and for coarse counts, without adversely affecting yarn evenness. At a given twist the corona treatment gave less end-breaks than untreated cotton. It also increased fabric strength but harshened fabric hand, both before and after wet finishing.

Effect of alkali treatment of lower concentrations on the structure and tensile properties of Pakistan’s coarse cotton fibre

“…It is therefore become necessary to investigate into the possibility of utilising coarse cotton fibre to produce yarn with better productivity. Various strategies for achieving smaller Micronaire value and increasing the fibre tensile strength to improve potential fibre spinnability have been investigated in previous studies (Abbott & Robinson, 1977;Aboul-Fadl, Zeronian, Kamal, Kim, & Ellison, 1985;Karahan, Özdoğan, Demir, Aydin, & Seventekin, 2009;Karande, Bharimalla, Hadge, Mhaske, & Vigneshwaran, 2011;Lawson & Hertel, 1974;Malek & Holme, 2003;Pionteck, Berger, Morgenstern, & Fengel, 1996;Raes et al, 1971;Thibodeaux & Copeland, 1975;Thorsen, 1971;Wakelyn et al, 2006). However, none of the existing research has reported the effect of lower concentrations, that is, less than 5M, of alkali treatment on the changes of structure and tensile properties of coarse cotton fibres.…”

Plasma modification of natural cellulosic fibres

“…24 Several studies on plasma surface modifi cation of cellulose-based textiles have been conducted, using glowdischarge technology at low pressure [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] as well as barrier discharge and corona treatments at atmospheric pressure. [41][42][43][44][45][46][47][48][49][50] In both cases, active particles such as radicals, ions, electrons and photons are generated, which under reduced pressure have a much larger free path length as compared with the process at atmospheric pressure. Consequently, the treatment at atmospheric pressure normally occurs in a narrow slit, while the treatment at low pressure is performed in a reactor with a volume adapted to the size of the samples.…”

“…42 Corona treatment of cotton and its effect on spinnability, strength, abrasion resistance, friction properties, etc., have been investigated by several research teams. 41,[43][44][45] It was found that corona treatments increased yarn strength (particularly for soft twisted yarns) by modifying the fi bre surfaces to increase friction between fi bres. It was demonstrated that the properties of the cotton fi bre surface were permanently modifi ed without any change in fi bre strength.…”

“…It was also claimed that the most effi cient method for a given total power input is to use multiple treatments at a number of separated treatment points rather than to rely on a single treatment in a single, concentrated corona fi eld. 41 In more recent years, other, more sophisticated, atmospheric pressure plasma processes (e.g. various dielectric barrier discharges, 50,57-60 have been developed.…”

Effect of Corona and Oxidation Pretreatments on Grafting in Wool Fabric

“…Corona treatments are reported to improve some functional properties of fabrics as well as their processing [1,3,4]. Bateup et al [2] effectively applied shrink resist polymers to wool pretreated with corona generated at high voltage and frequencies.…”