Journal of the Korean Society of Clothing and Textiles (한국의류학회지)

The Korean Society of Clothing and Textiles (한국의류학회)
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A Study on the Formaldehyde Release from Durable Press Finished Rayon Fabrics

DP 가공된 레이온 직물의 포름알데하이드 방출에 관한 연구

  • Yeo Sook-Young (Dept. of Clothing and Textiles, College of Home Economics, Yonsei University) ;
  • Kim Eun-Ae (Dept. of Clothing and Textiles, College of Home Economics, Yonsei University)
  • 여숙영 (연세대학교 가정대학 의생활학과) ;
  • 김은애 (연세대학교 가정대학 의생활학과)
  • Published : 1989.02.01
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Abstract

This paper is concerned with formaldehyde release from durable press finished rayon fabrics. $100\%$ rayon fabrics were treated with 3 kinds of commercial N-methylol crosslinking agents using a pad-dry cure technique. Aqueous extractions of fabric samples were carried out at $40^{\circ}C$ under pH's of 4, 7, 10. Formaldehyde release was evaluated for the types of resins, catalyst concentrations and extraction conditions. Results indicated that the higher concentration of catalyst leads to the more fixation of resin on the fabric. Total formaldehyde released to the extract was decreased as the catalyst concentration increased. For the resin types, the amount of formaldehyde released was in the order of DMU>MDMDHEU>DMDHEU. Free formaldehyde content in the extract was in the order of pH10>pH4>pH7. This result proved that resins are least resistant to alkaline hydrolysis and the N-C bond cleavage under alkaline condition. Under acidic condition, however, N-methylol formaldehyde was accumulated before the release of free formaldehyde. This suggested the C·0 bond cleavalge to form carbonium - immonim intermediate.

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