Literature review - ???????????????????????????

CHAPTER V
CONCLUSIONS
The properties of recycled HDPE/PET blends including mechanical,
rheological, thermal, morphological properties, water absorption, and density were
under the study. Also, the compatibilizers were used in the experiment to evaluate their
impact on the analyzed properties. Polyethylene grafted with maleic anhydride (PE-g-
MA) and high density polyethylene grafted with glycidyl methacrylate (HDPE-g-
GMA) improved compatibility of HDPE/PET blends. They reduced the particle size of
dispersed phase by enhanced interfacial adhesion between matrix and dispersed phase.
By varying the blend composition at 80/20, 60/40, 40/60, and 20/80 wt%, the
results were tensile strength, tensile modulus, flexural strength, flexural modulus, heat
distortion temperature (HDT), density, and water absorption increased with increasing
PET contents while tensile strain at break, impact strength, and viscosity decreased.
Dispersed phase size of HDPE-rich blends was smaller than that of PET-rich blends.
Moreover, blend compositions affected on crystallinity behavior of the blends.
The results indicated that the compatibilizers improved the mechanical,
rheological, thermal, morphological properties, water absorption, and density of the
blends. (1) tensile, flexural, compressive, and impact strength, and tensile strain at
break improved whereas tensile, flexural, and compressive modulus insignificantly
changed, (2) HDT of the compatibilized blends were not influenced, (3) an increase in
melt viscosity and depression of crystallinity degree PET and HDPE components in
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