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Authors
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Krause, B. ; Voigt, D. ; Lederer, A. ; Auhl, D. ; Münstedt, H.
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Title
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Determination of low amounts of long-chain branches in polypropylene using a combination of chromatographic and rheological methods
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Date
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08.11.2004
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Number
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12156
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Abstract
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The focus of our investigations lies on the detection of low amounts of long-chain branching (LCB) in isotactic polypropylene (iPP) created by electron beam irradiation. The modified samples were investigated by rheological experiments in shear and elongational flow and by size-exclusion chromatography. The comparison of the results demonstrates the efficiency and the detection limits of these methods, particularly at very low degrees of long-chain branching. The combination of chromatographic and rheological methods enables a sensitive and comprehensive way for the characterisation of the long-chain branching phenomena.
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Publisher
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Journal of Chromatography / A
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Wikidata
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Citation
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Journal of Chromatography / A 1056 (2004) 217-222
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DOI
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https://doi.org/10.1016/j.chroma.2004.06.127
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