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    Crystalline Characteristics and Their Influence in the Mechanical Performance in Poly(epsilon-Caprolactone) / High Density Polyethylene Blends

    Year: 2019

    Journal: Polymers, Volume 11, NOV

    Authors: Blazquez-Blazquez, Enrique; Perez, Ernesto; Lorenzo, Vicente; Cerrada, Maria L.

    Organizations: Agencia Estatal de Investigacion (AEI, Spain); European Regional Development Fund (FEDER, UE) [MAT2016-79869-C2-1-P]; European CommunityEuropean Commission [312284]

    Keywords: blend; polycaprolactone; polyethylene; crystallization; compatibility

    Blends of poly(epsilon-caprolactone) (PCL) and high-density polyethylene (HDPE) have been prepared at different compositions in order to assess the effect of HDPE on gas transport and mechanical behaviors of PCL. Previous to this evaluation, a complete morphological, structural, and thermal characterization were performed using techniques, including SEM, contact angle, FTIR, differential scanning calorimetry, and X-ray diffraction with synchrotron radiation at small and wide angles. Low HDPE incorporations allow interactions to be established at interfaces in the amorphous regions and the enhancement of the mechanical performance. Consequently, the addition of a small amount of HDPE (ranging from 5 to 10 wt%) appears to be appropriate in certain bio-applications where a higher mechanical behavior is required.
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