Effects of Compatibilizers and Hydrolysis on the Mechanical and Rheological Properties of Polypropylene/EPDM/Poly(lactic acid) Ternary Blends

다국어 초록 (Multilingual Abstract)

The effects of compatibilizers and hydrolysis on the mechanical, morphological and rheological properties of polypropylene (PP)/ethylene-propylene-diene monomer rubber (EPDM)/poly(lactic acid) (PLA) blends were studied. The compatibilizers used were polypropylene-g-maleic anhydride (PP-g-MAH) and styrene-ethylene-butylene-styrene-g-maleic anhydride (SEBS-g-MAH) copolymers. Before hydrolysis, mixing the compatibilizers PP-g-MAH (5 phr) and SEBS-g-MAH (5 phr) effectively increased the impact strength of PP/EPDM/PLA (64/16/20)blends without any loss of tensile strength. This result is consistent with the morphological and rheological properties of the PP/EPDM/PLA blends. After hydrolysis, the tensile strength of the PP/EPDM/PLA blends for the PLArich compositions decreased sharply until the hydrolysis time was 3 days. This suggests that the mechanical strength of the PLA already lost its mechanical properties, mostly when the hydrolysis time was 3 days under such hydrolysis conditions. The increase in viscosity and decrease in interfacial tension of the compatibilized PP/EPDM/PLA (64/16/20) blends was interpreted with the qualitative picture of the Palierne emulsion model. The interfacial tension calculated from the emulsion model is consistent with the mechanical and morphological properties of the PP/EPDM/PLA (64/16/20) blends.

참고문헌 (Reference)

1 G. Scott, 615 : 2-, 2001

2 J. F. Palierne, 29 : 204-, 1990

3 M.-B. Coltelli, 110 : 1250-, 2008

4 N. Reddy, 93 : 233-, 2008

5 W. N. Kim, 36 : 1477-, 1992

6 D. Graebling, 34 : 193-, 1990

7 J. G. Oldroyd, 218 : 122-, 1953

8 Y. T. Sung, 44 : 1681-, 2003

9 C.-H. Ho, 49 : 3902-, 2008

10 L. P. da Silva, 57 : 555-, 2008

11 Y. S. Chun, 41 : 8729-, 2000

12 A. Bhatia, 114 : 2837-, 2009

13 S. S. Sabet, 111 : 1954-, 2009

14 C. L. Simoes, 112 : 345-, 2009

15 N. S. Choi, 86 : 1892-, 2002

16 H. Xiao, 112 : 3754-, 2009

17 X. H. Chen, 30 : 4295-, 1997

18 G. Maglio, 44 : 369-, 2003

19 A. M. Gajria, 37 : 437-, 1996

20 J. W. Park, 44 : 4341-, 2003

21 G. Biresaw, 40 : 2248-, 2002

22 G. Zhang, 41 : 23-, 2003

23 J. L. Eguiburu, 39 : 6891-, 1998

24 H. T. Oyama, 50 : 747-, 2009

25 K. S. Anderson, 45 : 8809-, 2004

26 Y. F. Kim, 5 : 270-, 2004

27 L. L. Zhang, 65 : 1849-, 1997

28 I. Ohkoshi, 41 : 5985-, 2000

29 J. W. Park, 86 : 647-, 2002

30 J.-T. Yeh, 112 : 2757-, 2009

31 N. Lucas, 73 : 429-, 2008

32 X. Zhou, 76 : 1359-, 2000

33 S. C. Tjong, 40 : 1881-, 2002

34 S. George, 41 : 5485-, 2000

35 Zhen Xiu Zhang, "Preparation and Characterization of Polypropylene/Waste Ground Rubber Tire Powder Microcellular Composites by Supercritical Carbon Dioxide" 한국고분자학회 16 (16): 404-410, 2008

36 Jeong Oh Song, "Miscibility of Branched Polycarbonate Blends with Poly(ethylene-co-1,4-dimethyl cyclohexane terephthalate) Copolyesters" 한국고분자학회 15 (15): 640-645, 2007

37 이형곤, "Effects of PP-g-MAH on the Mechanical, Morphological and Rheological Properties of Polypropylene and Poly(Acrylonitrile-Butadiene-Styrene) Blends" 한국고분자학회 17 (17): 417-423, 2009

38 유태욱, "Effects of Compatibilizers on the Mechanical Properties and Interfacial Tension of Polypropylene and Poly(lactic acid) Blends" 한국고분자학회 18 (18): 583-588, 2010

39 Kun-Jun Hwang, "Effect of a Compatibilizer on the Microstructure and Properties of Partially Biodegradable LDPE/Aliphatic Polyester/Organoclay Nanocomposites" 한국고분자학회 14 (14): 179-186, 2006

40 Sangmook Lee, "Effect of Ultrasound on the Properties of Biodegradable Polymer Blends of Poly(lactic acid) with Poly(butylene adipate-co-terephthalate)" 한국고분자학회 15 (15): 44-50, 2007

41 심경자, "Dynamic Mechanical and Thermal Properties of Red Algae Fiber Reinforced Poly(lactic acid) Biocomposites" 한국고분자학회 18 (18): 489-495, 2010