Determination of Optimum Concentration of Ultrahigh Molecular Weight Polyethylene (UHMWPE) Gel by Zone Drawing Method - Optimum Gelation/crystallization Temperature -

띠연신 방법에 의한 초고분자량 폴리에틸렌 겔의 최적 농도 결정 -최적 결정화 온도 결정-

  • 지병철 (경북대학교 공과대학 염색공학과) ;
  • 정길숙 (영남대학교 공과대학 섬유학부)
  • Published : 1997.07.01

Abstract

Ultrahigh molecular weight polyethylene (UHMWPE) gel films with different con centrations of 0.3, 0.5, 0.7 and 1.0 g/d$\ell$ and different gelation/crystallization temperatures. In order to investigate drawing behaviors of UHMWPE gel films were drawn under various zone drawing conditions. Through a series of experiments, it turned out that the initial concentration and gelation/crystallization temperature of PE solution caused significant changes in draw ratio of UHMWPE gel film. That is, the one-step zone draw ratio of the gel film for initial concentration of 0.5 g/d$\ell$ and gelation/crystallization temperature $25^{\circ}C$ was at its maximum and gradually decreased at higher or lower concentration and gelation/crystallization temperature. Moreover this tendency was similar to the maximum draw ratio data. Based on the above results, it may be concluded that the optimum concentration and gelation/crystallization temperature of the initial UHMWPE solution can be determined directly by the zone draw ratio.

Keywords

References

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