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Study on PLLA Alloys with Impact Modifier and Talc  

Jeong, Dong-Seok (Department of Applied Chemical Engineering, Korea University of Technology and Education.)
Nam, Byeong-Uk (Department of Applied Chemical Engineering, Korea University of Technology and Education.)
Jang, Mi-Ok (Department of Applied Chemical Engineering, Korea University of Technology and Education.)
Hong, Chae-Hwan (Hyundai-Kia Motor Co., Ltd.)
Publication Information
Elastomers and Composites / v.45, no.2, 2010 , pp. 129-136 More about this Journal
Abstract
In this work, PLLA/EGMA blends were prepared by melt blending of biodegradable Poly-L-lactic acid(PLLA) with Poly(ethylene-co-glycidyl methacrylate)(EGMA) and Engage as impact modifiers by twin screw extruder. Blend compositions of PLLA/Impact modifier blends were 100/0, 75/25, 50/50, 25/75 and 0/100, respectively. Also, Talc was added to 3 PLLA rich phases on PLLA/EGMA blends. The morphology, viscoelastic/mechanical properties were characterized by FESEM, DMA, UTM and Izod impact tester. DMA and Izod impact test data showed that storage modulus at room temperature with increasing EGMA and Engage contents decreased, and impact strength increased. However, storage modulus at room temperature increased by adding talc. From FESEM image, we observed that domain phase was well dispersed into matrix. Although the tensile strength and flexural modulus were decreased with increasing the content of EGMA and Engage in them, they could be supplemented by adding talc.
Keywords
PLLA blends; morphology; viscoelastic property; mechanical property;
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Times Cited By KSCI : 5  (Citation Analysis)
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