Rheology and reptation of linear polymers. Ultrahigh molecular weight chain dynamics in the melt

J. F. Vega; S. Rastogi; G. W.M. Peters; H. E.H. Meijer

doi:10.1122/1.1718367

Rheology and reptation of linear polymers. Ultrahigh molecular weight chain dynamics in the melt

J. F. Vega, S. Rastogi, G. W.M. Peters, H. E.H. Meijer

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137 Scopus citations

Abstract

The melt rheology of ultrahigh molecular weight polymeric materials characterized by a narrow molecular weight distribution was discussed. The reptation concepts were applied on polypropylenes (PP) and ultrahigh molecular weight polyethylenes (UHMWPE). Metallocene UHMWPE showed a well-developed plateau modulus that approached to 2MPa. It was found that the reptation model predicted the viscoelastic response of the polymers but only in the contour length fluctuation regime. Analysis shows that the molecular weight for the onset of pure reptation for PE took the value of around Mr=800000, much higher than in 1,4-PBd, PIB and PS.

Original language	English (US)
Pages (from-to)	663-678
Number of pages	16
Journal	Journal of Rheology
Volume	48
Issue number	3
DOIs	https://doi.org/10.1122/1.1718367
State	Published - May 1 2004

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abstract = "The melt rheology of ultrahigh molecular weight polymeric materials characterized by a narrow molecular weight distribution was discussed. The reptation concepts were applied on polypropylenes (PP) and ultrahigh molecular weight polyethylenes (UHMWPE). Metallocene UHMWPE showed a well-developed plateau modulus that approached to 2MPa. It was found that the reptation model predicted the viscoelastic response of the polymers but only in the contour length fluctuation regime. Analysis shows that the molecular weight for the onset of pure reptation for PE took the value of around Mr=800000, much higher than in 1,4-PBd, PIB and PS.",

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AU - Rastogi, S.

AU - Peters, G. W.M.

AU - Meijer, H. E.H.

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AB - The melt rheology of ultrahigh molecular weight polymeric materials characterized by a narrow molecular weight distribution was discussed. The reptation concepts were applied on polypropylenes (PP) and ultrahigh molecular weight polyethylenes (UHMWPE). Metallocene UHMWPE showed a well-developed plateau modulus that approached to 2MPa. It was found that the reptation model predicted the viscoelastic response of the polymers but only in the contour length fluctuation regime. Analysis shows that the molecular weight for the onset of pure reptation for PE took the value of around Mr=800000, much higher than in 1,4-PBd, PIB and PS.

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Rheology and reptation of linear polymers. Ultrahigh molecular weight chain dynamics in the melt

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