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Polyethylene oxides

Analysis of tablet formation and properties of the resulting tablets

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Abstract

The aim of this study was to study tablet formation of polyethylene oxides (PEOs) with different molecular masses by means of 3D modeling and comparing the results to those of other more traditional techniques, such as Heckel analysis, analysis by the pressure- time function and energy analysis. The molecular masses ranged between 400,000 and 7,000,000 Da. Material properties, such as water content, particle size and morphology, and glass transition temperature were also studied. To complete this study, elastic recovery dependent on maximum relative density and time were determined. Furthermore, the crushing force of the tablets and their morphology were analyzed.

The PEOs consist of smooth edged particles of irregular shape; the particle size is similar to one type of MCC, namely Avicel PH 200. The PEOs are much more ductile during compression than MCC. Elastic recovery after tableting is higher than that for tablets made from MCC and continues for some time after tableting. The crushing force of the resulting tablets is low. In conclusion, with regards to direct compression the PEOs do not appear to be useful as sole tableting excipients.

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Authors and Affiliations

  1. Halle-Wittenberg Institute of Pharmaceutical Technology and Biopharmacy, Martin-Luther-University, Halle/Saale, Germany, 06120, Wolfgang-Langenbeck-Str. 4

    Picker-Freyer Katharina M.

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  1. Picker-Freyer Katharina M.
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Correspondence to Picker-Freyer Katharina M..

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Picker-Freyer, K.M. Polyethylene oxides. J Therm Anal Calorim 85, 495–504 (2006). https://doi.org/10.1007/s10973-006-7698-8

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  • DOI: https://doi.org/10.1007/s10973-006-7698-8

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