Durable press finish of cotton via dual curing using UV light and heat |
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| Authors: | Jinho Jang Ki-Cheol Yoon Sohk-Won Ko |
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| Institution: | (1) School of Materials Science and Engineering, Seoul National University, 151-742 Seoul, Korea;(2) SKC Co. Ltd, Songgo-Ub, 330-830 Chonan, Korea;(3) Present address: e-Commerce Standards Division, Agency for Technology and Standardization, #2 Joongang-dong, Kwacheoncity, 427-010 Kyunggi-do, Korea |
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| Abstract: | Continuous photografting/crosslinking of polyethyleneglycol dimethacrylate oligomers onto cotton using a water-soluble benzophenone
photoinitiator was investigated. Photografting increased with increasing irradiation dose, oligomer concentration and photoinitiator
concentration. Maximum grafting efficiency of DM 400 and 600 were 83% and 79%, respectively. The photografting increased the
wrinkle resistance of cotton implying surface crosslinking of cotton. Both surface crosslinking and bulk crosslinking of cotton
were accomplished via dual curing of a mixed formulation containing both a thermally curable component (BTCA/SHP) and a UV-curable
component. The wrinkle resistance of the crosslinked cotton was found to be higher when cured by thermal curing after UV curing
rather than by UV curing after thermal curing due to the facile post-polymerization of the UV active component. The presence
of crosslinks in the dually crosslinked cotton was verified with FT-IR and thermogravimetric analysis. |
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| Keywords: | Dual curing Photografting Crosslinking UV curing Wrinkle resistance |
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