섬유

use of lignin in polyurethane products

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 259
the utility of lignin by-products from chemical pulping operations for synthetic polymers is usually pictured as one relating to lignin's depolymerization to simple $left double quote$ feedstock $right double quote$ chemicals or to its use as a low-cost extender however, lignin's inherent properties as fiber reinforcement and adhesive have furnished it with characteristics highly desirable for a multitude of products. the utilization of these properties for polyurethane products has been studied, and it was found that lignin may indeed serve as the backbone for high-performance semi-rigid polyurethane foams, adhesives and coatings. efforts are reported that have concentrated on raising the level of lignin incorporation into polyurethanes via the polyol as well as the polyisocyanate component. 9 refs
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