섬유

Antibacterial and soluble rayon

  • 출판일2002.10
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 242
A Korean inventor discloses a water-soluble or water-repellent and antibacterial or flame-retardant rayon, in US Patent 6 344 077. Young-keun Hong of Seoul’s invention is based on a line of earlier developments, mainly in Japan, and involves introducing chitosan or alginic acid (or their derivatives) in an aqueous solution. The fibre is antibacterial or flame-retardant, depending on the composition of the cellulose solution. It is water soluble or water-repellent, according to the composition of the coagulation bath in which it is formed. To make the fibre, Hong prepares an aqueous cellulose solution and mixes it homogeneously without phase separation. Wet-spinning then produces the rayon: the aqueous cellulose solution is extruded into a low temperature coagulating bath held at 4-15°C and containing 5-25wt% of at least one of the group zinc sulphate, ammonium sulphate, sodium chloride and calcium chloride.
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