Mechanical and Morphological Properties of Poly‐3‐hydroxybutyrate/Poly(butyleneadipate‐co‐terephthalate)/Layered Double Hydroxide Nanocomposites

Nanocomposites of poly‐3‐hydroxybutyrate/poly(butyleneadipate‐co‐terephthalate)/layered double hydroxide (PHB/PBAT/LDH) were prepared from a binary blend of PHB/PBAT and stearate‐Zn3Al LDH via a solution casting method using chloroform as solvent in this study. The pristine Zn3Al LDH was synthesized from nitrate salts solution at pH 7 by using coprecipitation technique and then was modified by stearate anions surfactant via ion exchange reaction. As a result, the basal spacing of the LDH was increased from 8.77 to 24.94 Å after the modification. Intercalated nanocomposites were formed due to the presence of diffraction peak in XRD diffractograms. The infrared spectrum of stearate‐Zn3Al LDH exhibited the existence of stearate anions in the synthesized Zn3Al LDH. Mechanical properties with 2 wt% stearate‐Zn3Al LDH loading nanocomposites showed 56 wt% improvements in elongation at break compared to those of the blend.

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