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Volumn 39, Issue 16, 2006, Pages 5419-5426

Transient conformational change of bead-spring ring chain during creep process

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; MOLECULAR STRUCTURE; SEPARATION; STEADY FLOW; STRESSES;

EID: 33748303146     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma0608471     Document Type: Article
Times cited : (35)

References (25)
  • 17
    • 33748301688 scopus 로고    scopus 로고
    • note
    • 2(n - n′){1 - (n - n)/N}.
  • 18
    • 33748325381 scopus 로고    scopus 로고
    • note
    • BT.
  • 19
    • 33748289734 scopus 로고    scopus 로고
    • note
    • t dt′ γ̇(t′)G(t - t′) with G(t) being the relaxation modulus.
  • 22
    • 33748291130 scopus 로고    scopus 로고
    • note
    • o(t) seen in Figure 2 is contributed from time-dependent changes in both of the orientational correlation of different segments and the orientational anisotropy of respective segments.
  • 23
    • 33748316188 scopus 로고    scopus 로고
    • note
    • The difference in the orientational correlation of the segments of the ring and linear chains is not limited to the stress-controlled creep process but also observed for the start-up process of constant rate flow. In both processes, positive and negative correlations grow for the ring segments with An Δn ≅ and N/2 while the positive correlation grows for all segments of the linear chain.
  • 25
    • 0027114519 scopus 로고
    • η ≅ 1/2 and appear to be described by the bead-spring model. No rigid explanation seems to have been given for this difference between PDMS and PS. Apart from this problem, we note that the viscoelastic properties just correspond to the orientational anisotropy averaged over all segments, and thus, the details of the bead-spring model (motion of respective segments) have not been verified even for the ring and linear PS. It is important to test the model through a rheooptical experiment for partially labeled chains, (b) Cosgrove, T.; Griffiths, P. C.; Hollingshurst, J.; Richards, R. D. C.; Semlyen, J. A. Macromolecules 1992, 25, 6761.
    • (1992) Macromolecules , vol.25 , pp. 6761
    • Cosgrove, T.1    Griffiths, P.C.2    Hollingshurst, J.3    Richards, R.D.C.4    Semlyen, J.A.5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.