Effects of Incorporating Polycaprolactone and Flax Fiber into Glycerol-Plasticized Pea Starch |
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| Authors: | Olayide O Fabunmi Lope G Tabil Satyanarayan Panigrahi Peter R Chang |
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| Institution: | (1) Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK, S7N 5A9, Canada;(2) Bioproducts and Bioprocesses, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada |
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| Abstract: | This study focused on improving the material properties of pea thermoplastic starch (TPS) with polycaprolactone (PCL) and
flax fiber. Accordingly, composites of glycerol-plasticized pea starch, polycaprolactone, and flax fiber were prepared through
solid-phase compounding and compression-molding. The specimens were characterized through scanning electron microscopy, tensile
test, moisture absorption test, and differential scanning calorimetry. Morphological studies of the tensile fracture surfaces
revealed poor TPS-PCL interfacial interaction and limited TPS-flax fiber interfacial bonding. The composites showed significant
improvements in tensile strength with reduced moisture absorption capability essentially due to the hydrophobicity of PCL.
Individual components of the composites retained their respective thermal properties, an indication of thermodynamic immiscibility. |
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