Journal
POLYMER COMPOSITES
Volume 33, Issue 7, Pages 1154-1161Publisher
WILEY
DOI: 10.1002/pc.22244
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Funding
- Korea Environmental Industry & Technology Institute
- Ministry of Environment of the Korean Government [E211-40005-0023-0]
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This study examined the effect of three compatibilizers, namely, a hybrid compatibilizer composed of polypropylene-maleic anhydride (PP-g-MAH) and polyethylene-glycidyl methacrylate (PE-g-GMA), a single compatibilizer composed of PP-g-MAH, and a single compatibilizer composed of PE-g-GMA, on the mechanical, morphological, and rheological properties of a ternary blend of polypropylene (PP), poly(lactic acid; PLA), and a toughening modifier. The results of tensile strength, flexural strength, and impact strength tests for the ternary blends before and after hydrolysis, revealed that the ternary blend with a hybrid compatibilizer content of 3 phr exhibited better material properties than the blend containing a single compatibilizer. In the weighted relaxation spectra of the ternary blend using the Palierne emulsion model, the ternary blend containing the hybrid compatibilizer, exhibited only one relaxation spectrum peak at 0.16 s. This result suggests that the ternary blend with the hybrid compatibilizer exhibits uncharacteristic morphological properties, that is, a single-phase microstructure. The above results suggest that the hybrid mixture is an effective compatibilizer for the ternary blend of PP, PLA, and a toughening modifier. POLYM. COMPOS., 2012. (C) 2012 Society of Plastics Engineers
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