An analysis of some physical and chemical properties of CO2 laser-treated cotton-based fabrics

Hung, O. N.; Chan, C. K.; Kan, Chi Wai; Yuen, C.W.M.

doi:10.1007/s10570-016-1090-z

Cited by 18 publications

(22 citation statements)

References 32 publications

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“…In addition, the damaged fibres absorb less dye after laser treatment. It is also proven from the FTIR results discussed in a previous paper [8,9] that the loss of hydroxyl groups reduces the bonding between the dye and the polymer chains within the fibre, thereby lowering the dye absorption. Therefore, LD-treated fabrics have a lighter colour than the control sample.…”

Section: Reflectance Valuementioning

confidence: 88%

“…This shows that samples treated with laser before dyeing have a lighter blue surface appearance than the control sample. According to SEM images of cotton fibres in previous papers [8,9], pores are created on the fibre surface due to absorption of thermal heat leading to swelling and bursting during laser irradiation. As a result, parts of the fibres are damaged and removed.…”

Section: Reflectance Valuementioning

confidence: 99%

“…At the same time, polyester fibres melt due to the high temperature and are re-solidified when the reaction stops. Moreover, the melted polyester fibres flow and are bridged together, thereby covering the neighbouring cotton fibres [8]. As a result, less dye gets absorbed into these fibres, resulting in lighter colour.…”

Section: Colour Yieldmentioning

confidence: 99%

“…The tensile strength of laser-treated cotton/polyester blended fabrics dyed with RB19 is weakened in both warp and weft directions, compared with the control cotton/polyester blended sample. Laser irradiation of fabrics causes the formation of pores and cracks on cotton fibres as well as the melting of polyester fibres [8]. The changes to the fibres create weak points on the yarn resulting in lower tensile strength.…”

Section: Ph Measurementmentioning

confidence: 99%

“…However, the effect of laser treatment, using commercially production scale laser machine, on colour properties, involving its effect of dyeing, on 100% cotton woven fabrics has been studied in recent years [7][8][9][10] but its effect on cotton-blended fabrics, such as cotton/polyester fabrics, have been seldom reported. In our previous work [8,11], we compared some physical and chemical properties of laser treated pure cotton and cotton/polyester blended fabrics. In order to have a better understanding of the effect of treatment approach on the change in …”

Section: Introductionmentioning

confidence: 99%

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A Study of CO2 Laser Treatment on Colour Properties of Cotton-Based Fabrics

Hung

Kan

2017

Coatings

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Abstract:In this study, laser was applied to two types of cotton-based woven fabrics in order to study the effect of CO 2 laser technology on colour and fabric strength properties. The woven fabrics had different fibre compositions, i.e., one was 100% cotton while the other had 60% cotton blended with 40% polyester. They were treated with different combinations of laser processing parameters, i.e., resolution (52, 60, and 68 dpi) and pixel time (110, 120, 130, and 140 µs). There were two approaches adopted: (1) laser treated and then dyed (LD); and (2) first dyed and then laser treated (DL), in order to study the effects of the two different sequences on the resultant colour. Colour properties include reflectance value, colour yield, CIE L*a*b* values and levelness measured by spectrophotometer; pH value and tensile strength were also measured. It was discovered that laser treatment had no influence on chromaticity of cotton fabrics. Moreover, fabrics treated with laser had a lighter shade than the control samples. This confirmed that both approaches, i.e., laser treatment conducted before and after dyeing, can provide a colour fading effect. The tensile strength of fabrics was affected differently in relation to the dyeing and laser process. According to results obtained from the pH measurement, it is confirmed that laser treatment can provide a colour fading effect without affecting the pH value, and the fabrics can be used instantly right after the laser treatment.

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Section: Reflectance Valuementioning

confidence: 88%

Section: Reflectance Valuementioning

confidence: 99%

Section: Colour Yieldmentioning

confidence: 99%

Section: Ph Measurementmentioning

confidence: 99%