Characteristics of β--cyclodextrin Finished Nylon and PET Fabrics

${\beta}$-CD is produced from starch through enzymatic degradation, and therefore it is an eco-friendly material and isn't harmful to the body. Nylon and PET fabrics are being increasingly used in active wear, as customers prefer this more comfortable and multifunctional material, as it provides antimicrobial properties and the removal of body malodor. That being said, ${\beta}$-CD is a proper material for these purposes. The ${\beta}$-CD was applied to a nylon 66 fabric and a PET fabric which were not pre-modified, and also applied to the fabrics that were modified with $O_2$ plasma or alkaline solution in order to increase surface roughness. The characteristics of these fabrics were studied. The PET fabric, which was pretreated with a NaOH solution, gains more weight than the PET fabric without pretreatment by the ${\beta}$-CD finishing. A crosslink between nylon 66 or the PET fiber and the ${\beta}$-CD finishing agent was not formed; however, the crosslink was formed in cotton fibers. This was confirmed using FT-IR and TGA analysis. The whiteness decreased little, the value of WT and MIU decreased, and that of B and RT increased with the ${\beta}$-CD finish. All of the ${\beta}$-CD finished fabrics had washing fastness after 10 washing cycles, even though nylon 66 and the PET fibers were not crosslinked with the ${\beta}$-CD finishing agent.