worksheet and assessment card masters - National STEM Centre
worksheet and assessment card masters - National STEM Centre
worksheet and assessment card masters - National STEM Centre
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DOES IT MATTER WHICH DYE YOU CHOOSE?<br />
YOU WILL NEED:<br />
10 cm x 10 cm squares of similar weights of white fabric in<br />
each of the following fibres: wool, cotton, viscose, acetate,<br />
tricel, nylon, polyester, acrylic<br />
3 packets of household dye, all in same colour if possible: coldwater<br />
Dylon, hot-water Dylon, Dylon wash <strong>and</strong> dye (dispersal<br />
type)<br />
Washing soda<br />
Detergent<br />
White <strong>card</strong><br />
Salt<br />
Large saucepan<br />
Measuring jug<br />
Kettle for boiling water<br />
Wooden spoon<br />
Iron <strong>and</strong> ironing board<br />
Access to gas or electric ring<br />
1 Divide each square of fabric into four equal pieces.<br />
Keep one piece of each fabric as a control.<br />
2 Using each of the three dyes in turn, dye one piece<br />
of each fabric in each dye following the instructions on<br />
"the packet carefully . (Take care not tomix'·up the" ~<br />
.,samples -from.one dye'with;those of another.) ~<br />
0 wool<br />
0 cotton<br />
0 viscose<br />
0 acetate<br />
0 tricel<br />
0 nylon<br />
0 polyester<br />
0 acrylic<br />
3 When the samples are dry, iron them carefuily.<br />
Mount each set of samples on <strong>card</strong>, taking care to label<br />
them <strong>and</strong> keep the fabrics in the same order.<br />
4 Put the mounted samples side by side as below <strong>and</strong><br />
compare them.<br />
Which fabrics were dyed most successfully using coldwater<br />
dye?<br />
Which dye had the best overall results?<br />
How did the wash <strong>and</strong> dye samples compare with the<br />
other two?<br />
Which fabric was least successful overall?<br />
Were any of the fibres damaged by the hot methods of<br />
dyeing?<br />
Were you surprised by any of the results?<br />
undyed cold water hot water wash <strong>and</strong><br />
(control) dye dye dye<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
wool<br />
cotton<br />
viscose<br />
acetate<br />
tricel<br />
nylon<br />
polyester<br />
acrylic<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
wool<br />
cotton<br />
viscose<br />
acetate<br />
tricel<br />
nylon<br />
polyester<br />
acrylic<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
0<br />
wool<br />
cotton<br />
viscose<br />
acetate<br />
tricel<br />
nylon<br />
polyester<br />
acrylic
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