Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Th. Lüpke"'
Publikováno v:
Polymer. 45:6861-6872
Polypropylene cast films were drawn successively in two perpendicular directions at temperatures near the melting point. In order to investigate the structure formation along the deformation path the transverse draw ratio λ TD was varied between 1 a
Publikováno v:
Polymer Engineering & Science. 44:1534-1542
Polymer blends comprising a polystyrene-block-polybutadiene-block-polystyrene (SBS) block copolymer and atactic homopolystyrene (hPS) were investigated using injection molded and solution cast samples. The morphology of the materials was studied by m
Publikováno v:
Polymer. 44:4589-4597
The analysis of the stress relaxation behavior of thermoplastic elastomers (TPE) was made with the help of the two-components model, which allows a consistent description of the time and temperature dependent behavior. The effect of draw ratio, strai
Autor:
Ch. Hübner, D. Bamford, Günter Dlubek, Th. Lüpke, K. Petters, Mary J. Hill, J Stejny, M A Alam
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 40:65-81
High-quality positron lifetime measurements (70 million total counts) are reported for polyethylenes (PEs) of different crystallinities (Xc = 3–82%). The specific volumes of the crystalline and amorphous phases (Vc and Va, respectively) were estima
Publikováno v:
Polymer. 42:5381-5388
Positron lifetime measurements are reported for linear poly(α-olefin)s from polypropylene to poly-1-eicosene polymerised using zirconocene catalyst. For comparison a low density polyethylene was also studied. Four lifetimes are resolved, the longest
Publikováno v:
Macromolecules. 33:990-996
We report on the local free-volume properties in a series of commercial ethylene−vinyl acetate (EVA) copolymers ranging from PE to PVA, obtained via positron lifetime spectroscopy. The samples were characterized by DMA (dynamic mechanical analysis)
Autor:
Manfred Arnold, M. Ashraf Alam, S. Bornemann, D. Bamford, Th. Lüpke, Ch. Hübner, A Rodriguez-Gonzalez, Günter Dlubek, K. Petters, O. Henschke, J Stejny
Publikováno v:
Materials Science Forum. :303-305
Publikováno v:
Acta Polymerica. 41:196-198
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