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Relationship Between the Thermal Properties and the Morphology in High Density Polyethylenes

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Abstract

This work presents a relationship between the thermal properties in different polyethylene samples analyzed by differential scanning calorimetry (DSC). The morphology and structural changes were studied by transmission electron microscopy (TEM). A preparative method involving surface etching was used to obtain surface replicas. The main morphological features of the samples, characterized by lamellar structure, obtained in this work by TEM give values of mean lamellar thickness from 900 to 500 Ĺ in the highest branch content and molecular mass. Enthalpies of melting allowed to calculate crystallinity; given values in the range from 47 to 68%.

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Authors and Affiliations

  1. Dpto. C. de los Materiales, Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas de la Universidad de Oriente (IIBCA-UDO), Cerro del Medio, Av. Universidad, Apdo. Postal 245, Cumaná, Edo. Sucre, Venezuela

    B. Rojas de Gáscue & J. L. Prin

  2. Cumaná Edo, Núcleo de Sucre, Sucre, Venezuela

    D. Guerra

  3. Facultad de Cinecias, Centro de Microscopía Electrónica, Universidad Central de Venezuela, Caracas, 1041-A, Venezuela

    C. Urbina de Navarro

Authors
  1. B. Rojas de Gáscue
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  2. J. L. Prin
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  3. D. Guerra
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  4. C. Urbina de Navarro
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Corresponding author

Correspondence to B. Rojas de Gáscue.

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Rojas de Gáscue, B., Prin, J.L., Guerra, D. et al. Relationship Between the Thermal Properties and the Morphology in High Density Polyethylenes. Journal of Thermal Analysis and Calorimetry 67, 343–347 (2002). https://doi.org/10.1023/A:1013966830517

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  • DOI: https://doi.org/10.1023/A:1013966830517

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