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KMID : 1024520130220101287
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Journal of the Environmental Sciences
2013 Volume.22 No. 10 p.1287 ~ p.1294
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Effects of a Compatibilizer on the Tensile Properties of Low-Density Polyethylene/Modified Starch Blends
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Park Jin-Woo
Kim Gue-Hyun
Moon Jin-Bok
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Abstract
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In this study, thermoplastic starch (TPS), cross-linked starch (CS), and cross-linked starch modified with glycerol (CTPS) were prepared, and the mechanical properties of the compatibilized low-density polyethylene (LDPE) blends (LDPE/TPS, LDPE/CS, and LDPE/CTPS) were investigated and compared with those of uncompatibilized LDPE/TPS, LDPE/CS, and LDPE/CTPS blends. Maleic-anhydride-grafted polyethylene was used as the compatibilizer. The enhanced tensile strength and elongation at break for the compatibilized LDPE/modified starch blends are a result of the improved compatibility between LDPE and the modified starch, which was confirmed by torque measurements and scanning electron microscopy.
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KEYWORD
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Modified starch, Polyethylene, Compatibilizer, Compatibility, Scanning electron microscopy
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