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Abstract

The polymer nanocomposites were prepared by melt compounding from polypropylene/thermoplastic elastomer (PP-TPE) with sodium montmorillonite (Na-MMT) and cloisite 20A using maleic anhydride modified PP-grafted maleic anhydride (PP-g-MA) as a compatibilizer. Three different weight percentages (3, 5, and 7 wt%) of nanoclay (Na-MMT or C20A) were used to study the effect on the properties of nanocomposites. The optimized clay composition of 5% was tested by varying the wt% of compatibilizer (5, 10, 15, and 20) to obtain better performance properties of nanocomposites. The excellent improvements in mechanical properties were observed by the incorporation 5 wt% cloisite20A with 5% compatibilizer. TPO nanocomposites show higher melting point and thermal degradation temperature on heat loading. The good thermal stability was confirmed from DSC and TGA. The intercalated/exfoliated phenomenon was indicated by the increase in T_g and storage modulus using DMA. Wide angle X-ray scattering (XRD) was employed to study the size and changes in the morphology; it is also provided conclusive evidence for the formation of exfoliated structures.

Keywords

thermoplastic polyolefin nanocomposites polypropylene

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References

Giannelis EP Polymer layered silicate nanocomposites. Adv Mater 1996; 8: 29 35.

Ray SS and Okamoto M. Polymer/layered silicate nanocomposites: a review from preparation to processing . Prog Polym Sci 2003; 28: 1539 1641.

Rama MS , Neppalli R. , Chellaswamy R. and Swaminathan S. Exfoliation of clay layers in polypropylene matrix using potassium succinate-G-polypropylene as compatibilizer. Compos Sci Technol 2010 ; 70: 1550 1556.

Varlot K. , Reynaud E. , Kloppfer MH and Vigier G. Clay-reinforced polyamide: preferential orientation of the montmorillonite sheets and the polyamide crystalline lamellae. J Polym Sci, Part B: Polym Phys 2001; 39: 1360 1370.

Yang K. , Yang Q. , Li G. , Sun Y. and Feng D. Morphology and mechanical properties of polypropylene/calcium carbonate nanocomposites . Mater Lett 2006; 60: 805 809.

Kawasumi M. , Hasegawa N. , Kato M. , Usuki A. and Okada A. Preparation and mechanical properties of polypropylene clay hybrids. Macromolecules 1997; 30: 6333 6338.

Maiti P. , Nam PH , Okamoto M. and Kotaka T. The effect of crystallization on the structure and morphology of polypropylene/clay nanocomposites. Polym Eng Sci 2002; 42: 1864 1871.

Kodgire P. , Kalgaonkar R. , Hambir S. , Bulakh N. and Pog JP PP/clay nanocomposites: effect of clay treatment on morphology and dynamic mechanical properties. J Appl Polym Sci 2001 ; 81: 1786 1792.

Koo MCh , Kim MJ , Choi MH , Kim SO and Chung IJ Mechanical and rheological properties of the maleated polypropylene layered silicate nanocomposites with different morphology . J Appl Polym Sci 2003; 88: 1526 1535.

10.

Li J. , Zhou Ch and Gang W. Study on nonisothermal crystallization of maleic anhydride grafted polypropylene/montmorillonite nanocomposites. Polym Test 2003; 22: 217 223.

11.

Hasegawa N. , Kawasumi M. , Kato M. , Usuki A. and Okada A. Preparation and mechanical properties of polypropylene-clay hybrids using a maleic anhydride-modified polypropylene oilgomer. J Appl Polym Sci 1998; 67: 87 92.

12.

Reichert P. , Nitz H. , Klinke S. , Brandsch R. , Thomann R. and Mulhaupt R. Macromol Mater Eng 2000; 275: 8 17.

13.

Tanaka G. and Goettler LA Predicting the binding energy for nylon 6,6/clay nanocomposites by molecular modeling. Polymer 2002; 43: 541 553.

14.

Mehta S. , Mirabella FM , Rufener K. and Bafna A. Thermoplastic olefin/clay nanocomposites: morphology and mechanical properties . J Appl Polym Sci 2004; 92: 928 936.

15.

Tange Y. , Hu Y. , Song L. , et al. Preparation and thermal stability of polypropylene/montmorillonite nanocomposites. Polymer 2003; 82: 127 131.

16.

Krump H. , Luyt AS and Hudec I. Effect of different modified clays on the thermal and physical properties of polypropylene-montmorillonite nanocomposites. Mater Lett 2006; 60: 2877 2880.

Thermoplastic polyolefin nanocomposites: effect of mechanical,thermal,and morphological properties

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