섬유

relaxation of self-entangled many-arm star polymers

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 260
a description is given of the relaxation of star polymers based on the conformational scaling properties predicted by m. daoud and j.p. cotton and confirmed in recent simulations. the authors identify three typical relaxation mechanisms. the first describes elastic deformation of the overall shape. its relaxation time is nearly independent of f. a second type of relaxation occurs via rotational diffusion. the authors predict that the relaxation time should scale with n**2** $nu$ ** $plus$ **1f**2** $minus$ ** $nu$ where $nu$ is the correlation length exponent. a third relaxation process is the disentanglement of two or more arms. the longest relaxation time should increase exponentially with f** $one half$ . (edited author abstract) 24 refs
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