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Volumn 46, Issue 24, 2008, Pages 2660-2665

The tip of iceberg in nonlinear polymer rheology: Entangled liquids are "solids"

Author keywords

Doi Edwards model; Entanglement; Rheology; Shear; Viscoelastic properties

Indexed keywords

COHESIVE STRENGTHS; DOI-EDWARDS MODEL; ENTANGLED POLYMER SOLUTIONS; ENTANGLEMENT; ENTANGLEMENT NETWORKS; LARGE DEFORMATIONS; NON UNIFORMS; NONLINEAR POLYMERS; SHEAR; SHEAR BENDING; START-UP; STEP STRAINS; STRESS DROPS; STRUCTURAL FAILURES; VISCOELASTIC PROPERTIES;

EID: 57649219463     PISSN: 08876266     EISSN: None     Source Type: Journal    
DOI: 10.1002/polb.21588     Document Type: Review
Times cited : (25)

References (61)
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    • A newer and shorter summary, along with all unpublished references cited in this article, can be found in AIP Conf Proc 1027, 397-399.
    • A newer and shorter summary, along with all unpublished references cited in this article, can be found in AIP Conf Proc 1027, 397-399.
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    • Wang, S. Q.; Ravindranath, S.; Boukany, P. E.; Olechnowicz, M.; Quirk, R. P; Halasa, A.; Mays, J. Phys Rev Lett 2006, 97, 187801;
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    • Here, we treat chain entanglement as dynamic structure so that structural failure essentially refers to our perceived rearrangement of chain entanglements
    • Here, we treat chain entanglement as dynamic structure so that structural failure essentially refers to our perceived rearrangement of chain entanglements.
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    • Boukany, P. E.; Wang, S. Q. Soft Matter, in press.
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    • Hu, Y. T.; Wilen, L.; Philips, A.; Lips, A. J Rheol 2007, 51, 275. As indicated in ref. 18(c), only sufficiently entangled solution show shear banding after a large amount of shear strain. Steady state is taken as when rheological properties and velocity profiles are no longer changing in time.
    • Hu, Y. T.; Wilen, L.; Philips, A.; Lips, A. J Rheol 2007, 51, 275. As indicated in ref. 18(c), only sufficiently entangled solution show shear banding after a large amount of shear strain. Steady state is taken as when rheological properties and velocity profiles are no longer changing in time.
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    • Since chain diffusion in a matrix of arbitrarily high molecular weight may indeed be regarded a single-chain process, it is not surprising that the de Gennes reptation picture provides a rather satisfactory account of the molecular weight scaling behavior of chain diffusion, especially diffusion of a chain in a matrix of sufficiently higher molecular weight matrix. For a review of polymer diffusion, see Wang, S. Q. J Polym Sci Polym Phys 2003, 41, 1589. Deformation, dynamics, and flow of entangled polymers involve collective/cooperative interactions of many chains. At large deformations taking place over a time scale much shorter than the terminal relaxation time, the chain entanglement network could suffer cohesive collapse that would be a truly many-body problem well beyond the reach of a single-chain mean field approach
    • Since chain diffusion in a matrix of arbitrarily high molecular weight may indeed be regarded a single-chain process, it is not surprising that the de Gennes reptation picture provides a rather satisfactory account of the molecular weight scaling behavior of chain diffusion, especially diffusion of a chain in a matrix of sufficiently higher molecular weight matrix. For a review of polymer diffusion, see Wang, S. Q. J Polym Sci Polym Phys 2003, 41, 1589. Deformation, dynamics, and flow of entangled polymers involve collective/cooperative interactions of many chains. At large deformations taking place over a time scale much shorter than the terminal relaxation time, the chain entanglement network could suffer cohesive collapse that would be a truly many-body problem well beyond the reach of a single-chain mean field approach.
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    • Shear banding has been known to occur in wormlike micellar solutions. However, such a phenomenon has little bearing on entangled polymers, for example, because micelles could indeed adopt different chain lengths in the different shear bands
    • Shear banding has been known to occur in wormlike micellar solutions. However, such a phenomenon has little bearing on entangled polymers, for example, because micelles could indeed adopt different chain lengths in the different shear bands.
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    • It appears that the CCR concept of Marrucci is important to depict steady shear thinning when homogeneous flow prevails
    • Marrucci, G. J Non-Newtonian Fluid Mech 1996, 62, 279. It appears that the CCR concept of Marrucci is important to depict steady shear thinning when homogeneous flow prevails.
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    • Evidence to support the suggestion of associating the force maximum with the yielding point is clear from refs. 20 and 43 for both simple shear and uniaxial extension that the applied strain is no longer 100% recoverable whenever a startup deformation has taken the sample past the point of stress overshoot
    • Evidence to support the suggestion of associating the force maximum with the yielding point is clear from refs. 20 and 43 for both simple shear and uniaxial extension that the applied strain is no longer 100% recoverable whenever a startup deformation has taken the sample past the point of stress overshoot.
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    • Archer, L. A.; Chen, Y.-L.; Larson, R. G. J Rheol 1995, 39, 519. Delayed slip was not understood in terms of its physical origin. A manuscript is under preparation to describe the physics behind this counterintuitive phenomenon based on experimental data on polyisoprene melts as well as concepts introduced in ref. 16.
    • Archer, L. A.; Chen, Y.-L.; Larson, R. G. J Rheol 1995, 39, 519. Delayed slip was not understood in terms of its physical origin. A manuscript is under preparation to describe the physics behind this counterintuitive phenomenon based on experimental data on polyisoprene melts as well as concepts introduced in ref. 16.
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    • Although the actual physics dictating interfacial wall slip of entangled polymers might be different from the picture of Brochard-de Gennes, the reality appears to be that the bulk shear banding occurs because of the internal chain disentanglement that is identical conceptually to the interfacial disentanglement
    • Brochard, F; de Gennes, P. G. Langmuir 1992, 8, 3033. Although the actual physics dictating interfacial wall slip of entangled polymers might be different from the picture of Brochard-de Gennes, the reality appears to be that the bulk shear banding occurs because of the internal chain disentanglement that is identical conceptually to the interfacial disentanglement.
    • (1992) Langmuir , vol.8 , pp. 3033
    • Brochard, F.1    de Gennes, P.G.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.