We are investigating the pad dyeing of cotton fabric with reactive dyes. After padding, dye aggregates were applied onto the fabric. We are eager to find a way to examine the dye disaggregation and distribution process into the yarn and fiber during the subsquent steaming or baking stage, thus, measures can be taken to acclerate dye disaggregation and distribution into the cotton fiber, improving reactive dye fixation.
Any help is appreciated!
if your dye has a characteristic band (I mean different from the cellulose substrate of cotton) you can use infrared microscopy to check the distribution
I agree: the "infrared mapping" by using FTIR Microscopy - most probably is the best method to solve your problem
Alternatively you can try to scan the fibre cross sections with photometer microscopy
In addition to all above you can try UV to check the emission spectra. Hand held UV sources or you passing the cloth across the UV source (Scanning) and recording spectra will be quite useful.
If you want to measure the dye distribution in different stages then I think Energy Dispersive Spectroscopy (EDS) would be the best option.
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