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Calorimetric, X-ray and infra-red investigations on poly(hexamethylene adipamide)

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Summary

In dependence on crystallization conditions three ranges with different crystal structure and heat of fusion were found by DSC,WAXS,and IR for unoriented PA 6.6 samples of densities between 1.10 and 1.17gcm−3: Range I:αI triclinic, ρ Ic =1.225 gcm−3,ΔH IM = 235 Jg−1. Range II:αII triclinic,ρ IIc =1.165 gcm−3, ΔH IIM =185 Jg−1. Range III:Continuous variation from ρ Ic ,ΔH IM to ρ IIc , ΔH IIM . ρa=1.095 gcm−3 is independent of crystallization. conditions. The transition between αI and αII is probably due to changes of the chain conformation.

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Authors and Affiliations

  1. Meß- und Prüflaboratorium, BASF Aktiengesellschaft, 6700, Ludwigshafen am Rhein, Germany

    H. Haberkorn, K. H. Illers & P. Simak

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  1. H. Haberkorn
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  2. K. H. Illers
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  3. P. Simak
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Haberkorn, H., Illers, K.H. & Simak, P. Calorimetric, X-ray and infra-red investigations on poly(hexamethylene adipamide). Polymer Bulletin 1, 485–490 (1979). https://doi.org/10.1007/BF00255713

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  • DOI: https://doi.org/10.1007/BF00255713

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