Abstract
We investigated formaldehyde release from cotton and polyester/cotton materials treated with DMEU and DMDHEU resins at different condensation temperatures. In the samples treated with DMEU, the amount of free formaldehyde was greater at lower condensation temperatures. Samples treated with DMDHEU gave similar results when the AATCC method for determining formaldehyde was used, but when the MITI method was used, the condensation temperature-formaldehyde curves showed a minimum at about 140°C. The release of formaldehyde is a slow process, because both methods gave similar curves when longer extraction times were used. Changing the extraction temperature gave a quantitative difference.
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