Abstract    This paper focuses on effect of abrasion process on color and reflectance factor changes of dyed woven fabrics containing 100% acrylic chenille yarns in weft and cotton warp yarns. Three fabrics having 12, 14 and 16 weft per centimeter were dyed with three basic dyes in different hues. Four different abrasion levels, i.e. 50,200,400 and 650 were selected to abrade samples. The obtained results show that abrasion of samples leads to decrease of reflectance factor and increase of color change up to specific levels of abrasion, although this change was not the same for different hues and weft densities. It was found that reflectance factor and color differences of fabrics that have higher weft density were more affected by abrasion at all abrasion levels.

Keywords    Reflectance value, Chenille yarn, Color difference, Abrasion process.

چکیده    دراین تحقیق تاثیر فرایند سایش بر تغییر رنگ و فاکتور انعکاس پارچه های تاری- پودی رنگرزی شده حاوی نخهای فانتزی شنیل اکریلیک در پود و نخهای تار پنبه­ای مورد بررسی قرار گرفت. سه نوع پارچه تاری- پودی با تراکم پودی 12 ، 14 و 16 در سانتیمتر با استفاده از 3 نوع رنگ مختلف تولید شد. هر نمونه در 4 دور سایش 50، 200، 400 و 650 آزمایش شد. نتایج حاصل نشان داد که فرایند سایش تا مقدار مشخصی منجر به کاهش فاکتور انعکاس و افزایش تغییر رنگ می­شود. البته روند تغییرات برای رنگهای مختلف و تراکمهای پودی متفاوت یکسان نبود. نتایج حاصل نشان داد که فاکتور انعکاس و تغییر رنگ پارچه های تاری – پودی بافته شده با تراکم پودی بالاتر، در تمامی دورهای سایش، تغییرات بیشتری نشان می­دهد.

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